24 #include "ns3/object-factory.h"
25 #include "ns3/queue.h"
26 #include "ns3/net-device-queue-interface.h"
27 #include "ns3/socket.h"
40 .SetGroupName (
"TrafficControl")
42 .AddAttribute (
"Limit",
43 "The maximum number of packets accepted by this queue disc.",
46 MakeUintegerChecker<uint32_t> ())
61 const uint32_t
PfifoFastQueueDisc::prio2band[16] = {1, 2, 2, 2, 1, 2, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1};
70 NS_LOG_LOGIC (
"Queue disc limit exceeded -- dropping packet");
77 if (item->GetPacket ()->PeekPacketTag (priorityTag))
82 uint32_t band =
prio2band[priority & 0x0f];
105 NS_LOG_LOGIC (
"Popped from band " << i <<
": " << item);
126 NS_LOG_LOGIC (
"Peeked from band " << i <<
": " << item);
142 NS_LOG_ERROR (
"PfifoFastQueueDisc cannot have classes");
148 NS_LOG_ERROR (
"PfifoFastQueueDisc needs no packet filter");
156 factory.
SetTypeId (
"ns3::DropTailQueue<QueueDiscItem>");
166 NS_LOG_ERROR (
"PfifoFastQueueDisc needs 3 internal queues");
174 NS_LOG_ERROR (
"PfifoFastQueueDisc needs 3 internal queues operating in packet mode");
178 for (uint8_t i = 0; i < 2; i++)
182 NS_LOG_ERROR (
"The capacity of some internal queue(s) is less than the queue disc capacity");
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 "...
virtual ~PfifoFastQueueDisc()
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...
#define NS_OBJECT_ENSURE_REGISTERED(type)
Register an Object subclass with the TypeId system.
virtual void InitializeParams(void)
Initialize parameters (if any) before the first packet is enqueued.
#define NS_LOG_COMPONENT_DEFINE(name)
Define a Log component with a specific name.
void SetTypeId(TypeId tid)
Set the TypeId of the Objects to be created by this factory.
QueueDisc is an abstract base class providing the interface and implementing the operations common to...
Use number of packets for maximum queue size.
virtual bool CheckConfig(void)
Check whether the current configuration is correct.
Ptr< InternalQueue > GetInternalQueue(uint32_t i) const
Get the i-th internal queue.
static constexpr const char * LIMIT_EXCEEDED_DROP
Packet dropped due to queue disc limit exceeded.
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.
Hold variables of type enum.
Ptr< Object > Create(void) const
Create an Object instance of the configured TypeId.
Hold an unsigned integer type.
indicates whether the socket has a priority set.
uint32_t GetNPacketFilters(void) const
Get the number of packet filters.
uint32_t m_limit
Maximum number of packets that can be stored.
virtual Ptr< const QueueDiscItem > DoPeek(void) const
This function returns a copy of the next packet the queue disc will extract.
Ptr< QueueDiscItem > Dequeue(void)
Request the queue discipline to extract a packet.
Every class exported by the ns3 library is enclosed in the ns3 namespace.
static TypeId GetTypeId(void)
Get the type ID.
virtual bool DoEnqueue(Ptr< QueueDiscItem > item)
This function actually enqueues a packet into the queue disc.
void Set(std::string name, const AttributeValue &value)
Set an attribute to be set during construction.
uint8_t GetPriority(void) const
Get the tag's priority.
NS_LOG_LOGIC("Net device "<< nd<< " is not bridged")
Instantiate subclasses of ns3::Object.
Introspection did not find any typical Config paths.
static const uint32_t prio2band[16]
Priority to band map.
#define NS_LOG_ERROR(msg)
Use NS_LOG to output a message of level LOG_ERROR.
Linux pfifo_fast is the default priority queue enabled on Linux systems.
virtual Ptr< QueueDiscItem > DoDequeue(void)
This function actually extracts a packet from the queue disc.
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.
Ptr< const QueueDiscItem > Peek(void) const
Get a copy of the next packet the queue discipline will extract, without actually extracting the pack...
PfifoFastQueueDisc()
PfifoFastQueueDisc constructor.
uint32_t GetNPackets(void) const
Get the number of packets stored by the queue disc.