22#include "ns3/drop-tail-queue.h"
24#include "ns3/object-factory.h"
37 TypeId(
"ns3::FifoQueueDisc")
39 .SetGroupName(
"TrafficControl")
41 .AddAttribute(
"MaxSize",
45 MakeQueueSizeChecker());
A FIFO packet queue that drops tail-end packets on overflow.
Simple queue disc implementing the FIFO (First-In First-Out) policy.
FifoQueueDisc()
FifoQueueDisc constructor.
Ptr< const QueueDiscItem > DoPeek() override
Return a copy of the next packet the queue disc will extract.
Ptr< QueueDiscItem > DoDequeue() override
This function actually extracts a packet from the queue disc.
bool CheckConfig() override
Check whether the current configuration is correct.
void InitializeParams() override
Initialize parameters (if any) before the first packet is enqueued.
bool DoEnqueue(Ptr< QueueDiscItem > item) override
This function actually enqueues a packet into the queue disc.
static constexpr const char * LIMIT_EXCEEDED_DROP
Packet dropped due to queue disc limit exceeded.
static TypeId GetTypeId()
Get the type ID.
~FifoQueueDisc() override
Smart pointer class similar to boost::intrusive_ptr.
QueueDisc is an abstract base class providing the interface and implementing the operations common to...
void AddInternalQueue(Ptr< InternalQueue > queue)
Add an internal queue to the tail of the list of queues.
QueueSize GetCurrentSize()
Get the current size of the queue disc in bytes, if operating in bytes mode, or packets,...
uint32_t GetNPackets() const
Get the number of packets stored by the queue disc.
uint32_t GetNBytes() const
Get the amount of bytes stored by the queue disc.
Ptr< InternalQueue > GetInternalQueue(std::size_t i) const
Get the i-th internal queue.
std::size_t GetNQueueDiscClasses() const
Get the number of queue disc classes.
QueueSize GetMaxSize() const
Get the maximum size of the queue disc.
std::size_t GetNPacketFilters() const
Get the number of packet filters.
bool SetMaxSize(QueueSize size)
Set the maximum size of the queue disc.
std::size_t GetNInternalQueues() const
Get the number of internal queues.
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.
Class for representing queue sizes.
AttributeValue implementation for QueueSize.
a unique identifier for an interface.
TypeId SetParent(TypeId tid)
Set the parent TypeId.
#define NS_LOG_ERROR(msg)
Use NS_LOG to output a message of level LOG_ERROR.
#define NS_LOG_COMPONENT_DEFINE(name)
Define a Log component with a specific name.
#define NS_LOG_LOGIC(msg)
Use NS_LOG to output a message of level LOG_LOGIC.
#define NS_LOG_FUNCTION(parameters)
If log level LOG_FUNCTION is enabled, this macro will output all input parameters separated by ",...
Ptr< T > CreateObjectWithAttributes(Args... args)
Allocate an Object on the heap and initialize with a set of attributes.
#define NS_OBJECT_ENSURE_REGISTERED(type)
Register an Object subclass with the TypeId system.
QueueDiscSizePolicy
Enumeration of the available policies to handle the queue disc size.
@ SINGLE_INTERNAL_QUEUE
Used by queue discs with single internal queue.
Every class exported by the ns3 library is enclosed in the ns3 namespace.