ns-3
ns3::QosTag Class Reference

#include <qos-tag.h>

Inheritance diagram for ns3::QosTag:
Collaboration diagram for ns3::QosTag:

List of all members.

Public Member Functions

virtual TypeId GetInstanceTypeId (void) const
 QosTag ()
 QosTag (uint8_t tid)
void SetTid (uint8_t tid)
void SetUserPriority (UserPriority up)
virtual void Serialize (TagBuffer i) const
virtual void Deserialize (TagBuffer i)
virtual uint32_t GetSerializedSize () const
virtual void Print (std::ostream &os) const
uint8_t GetTid (void) const

Static Public Member Functions

static TypeId GetTypeId (void)
 This method returns the TypeId associated to ns3::QosTag.

Detailed Description

The aim of the QosTag is to provide means for an Application to specify the TID which will be used by a QoS-aware WifiMac for a given traffic flow. Note that the current QosTag class was designed to be completely mac/wifi specific without any attempt at being generic.


Constructor & Destructor Documentation

Create a QosTag with the default TID = 0 (best effort traffic)

ns3::QosTag::QosTag ( uint8_t  tid)

Create a QosTag with the given TID


Member Function Documentation

void ns3::QosTag::Deserialize ( TagBuffer  i) [virtual]
Parameters:
ithe buffer to read data from.

Read the content of the tag from the provided tag buffer. DO NOT attempt to read more bytes than you wrote with Tag::Serialize.

Implements ns3::Tag.

References ns3::TagBuffer::ReadU8().

TypeId ns3::QosTag::GetInstanceTypeId ( void  ) const [virtual]
Returns:
the TypeId associated to the most-derived type of this instance.

This method is typically implemented by ns3::Object::GetInstanceTypeId but some classes which derive from ns3::ObjectBase directly have to implement it themselves.

Implements ns3::ObjectBase.

References GetTypeId().

uint32_t ns3::QosTag::GetSerializedSize ( ) const [virtual]
Returns:
the number of bytes required to serialize the data of the tag.

This method is typically invoked by Packet::AddPacketTag or Packet::AddByteTag just prior to calling Tag::Serialize.

Implements ns3::Tag.

TypeId ns3::QosTag::GetTypeId ( void  ) [static]

This method returns the TypeId associated to ns3::QosTag.

Attributes defined for this type:

  • tid: The tid that indicates AC which packet belongs

No TraceSources defined for this type.

Reimplemented from ns3::Tag.

References ns3::TypeId::SetParent().

Referenced by GetInstanceTypeId().

void ns3::QosTag::Print ( std::ostream &  os) const [virtual]
Parameters:
osthe stream to print to

This method is typically invoked from the Packet::PrintByteTags or Packet::PrintPacketTags methods.

Implements ns3::Tag.

void ns3::QosTag::Serialize ( TagBuffer  i) const [virtual]
Parameters:
ithe buffer to write data into.

Write the content of the tag in the provided tag buffer. DO NOT attempt to write more bytes than you requested with Tag::GetSerializedSize.

Implements ns3::Tag.

References ns3::TagBuffer::WriteU8().

void ns3::QosTag::SetTid ( uint8_t  tid)

Set the TID to the given value. This assumes that the application is aware of the QoS support provided by the MAC layer, and is therefore able to set the correct TID.

Parameters:
tidthe value of the TID to set

Set the TID to the value that corresponds to the requested UserPriority. Note that, since the mapping of UserPriority to TID is defined for EDCA only, you should call this method only when EDCA is used. When using HDCA, QosTag(uint8_t tid) should be used instead.

Parameters:
upthe requested UserPriority

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