A Discrete-Event Network Simulator
API
ns3::LlcSnapHeader Class Reference

Header for the LLC/SNAP encapsulation. More...

#include "llc-snap-header.h"

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Public Member Functions

 LlcSnapHeader ()
 
virtual uint32_t Deserialize (Buffer::Iterator start)
 
virtual TypeId GetInstanceTypeId (void) const
 Get the most derived TypeId for this Object. More...
 
virtual uint32_t GetSerializedSize (void) const
 
uint16_t GetType (void)
 Return the Ethertype. More...
 
virtual void Print (std::ostream &os) const
 
virtual void Serialize (Buffer::Iterator start) const
 
void SetType (uint16_t type)
 Set the Ethertype. More...
 
- Public Member Functions inherited from ns3::Header
virtual ~Header ()
 
virtual uint32_t Deserialize (Buffer::Iterator start)=0
 Deserialize the object from a buffer iterator. More...
 
virtual uint32_t Deserialize (Buffer::Iterator start, Buffer::Iterator end)
 Deserialize the object from a buffer iterator. More...
 
- Public Member Functions inherited from ns3::Chunk
virtual uint32_t Deserialize (Buffer::Iterator start, Buffer::Iterator end)
 Deserialize the object from a buffer iterator. More...
 
- Public Member Functions inherited from ns3::ObjectBase
virtual ~ObjectBase ()
 Virtual destructor. More...
 
void GetAttribute (std::string name, AttributeValue &value) const
 Get the value of an attribute, raising fatal errors if unsuccessful. More...
 
bool GetAttributeFailSafe (std::string name, AttributeValue &value) const
 Get the value of an attribute without raising erros. More...
 
void SetAttribute (std::string name, const AttributeValue &value)
 Set a single attribute, raising fatal errors if unsuccessful. More...
 
bool SetAttributeFailSafe (std::string name, const AttributeValue &value)
 Set a single attribute without raising errors. More...
 
bool TraceConnect (std::string name, std::string context, const CallbackBase &cb)
 Connect a TraceSource to a Callback with a context. More...
 
bool TraceConnectWithoutContext (std::string name, const CallbackBase &cb)
 Connect a TraceSource to a Callback without a context. More...
 
bool TraceDisconnect (std::string name, std::string context, const CallbackBase &cb)
 Disconnect from a TraceSource a Callback previously connected with a context. More...
 
bool TraceDisconnectWithoutContext (std::string name, const CallbackBase &cb)
 Disconnect from a TraceSource a Callback previously connected without a context. More...
 

Static Public Member Functions

static TypeId GetTypeId (void)
 Get the type ID. More...
 
- Static Public Member Functions inherited from ns3::Header
static TypeId GetTypeId (void)
 Get the type ID. More...
 
- Static Public Member Functions inherited from ns3::Chunk
static TypeId GetTypeId (void)
 Get the type ID. More...
 
- Static Public Member Functions inherited from ns3::ObjectBase
static TypeId GetTypeId (void)
 Get the type ID. More...
 

Private Attributes

uint16_t m_etherType
 the Ethertype More...
 

Additional Inherited Members

- Protected Member Functions inherited from ns3::ObjectBase
void ConstructSelf (const AttributeConstructionList &attributes)
 Complete construction of ObjectBase; invoked by derived classes. More...
 
virtual void NotifyConstructionCompleted (void)
 Notifier called once the ObjectBase is fully constructed. More...
 

Detailed Description

Header for the LLC/SNAP encapsulation.

Introspection did not find any typical Config paths.

For a list of EtherTypes, see http://www.iana.org/assignments/ieee-802-numbers/ieee-802-numbers.xhtml


No Attributes are defined for this type.
No TraceSources are defined for this type.
Size of this type is 16 bytes (on a 64-bit architecture).

Definition at line 42 of file llc-snap-header.h.

Constructor & Destructor Documentation

◆ LlcSnapHeader()

ns3::LlcSnapHeader::LlcSnapHeader ( )

Definition at line 32 of file llc-snap-header.cc.

References NS_LOG_FUNCTION.

Member Function Documentation

◆ Deserialize()

uint32_t ns3::LlcSnapHeader::Deserialize ( Buffer::Iterator  start)
virtual
Parameters
startan iterator which points to where the header should read from.
Returns
the number of bytes read.

This method is used by Packet::RemoveHeader to re-create a header from the byte buffer of a packet. The data read is expected to match bit-for-bit the representation of this header in real networks.

Note that data is not actually removed from the buffer to which the iterator points. Both Packet::RemoveHeader() and Packet::PeekHeader() call Deserialize(), but only the RemoveHeader() has additional statements to remove the header bytes from the underlying buffer and associated metadata.

Implements ns3::Header.

Definition at line 92 of file llc-snap-header.cc.

References GetSerializedSize(), m_etherType, ns3::Buffer::Iterator::Next(), NS_LOG_FUNCTION, ns3::Buffer::Iterator::ReadNtohU16(), and visualizer.core::start().

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◆ GetInstanceTypeId()

TypeId ns3::LlcSnapHeader::GetInstanceTypeId ( void  ) const
virtual

Get the most derived TypeId for this Object.

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

Returns
The TypeId associated to the most-derived type of this instance.

Implements ns3::ObjectBase.

Definition at line 68 of file llc-snap-header.cc.

References GetTypeId().

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◆ GetSerializedSize()

uint32_t ns3::LlcSnapHeader::GetSerializedSize ( void  ) const
virtual
Returns
the expected size of the header.

This method is used by Packet::AddHeader to store a header into the byte buffer of a packet. This method should return the number of bytes which are needed to store the full header data by Serialize.

Implements ns3::Header.

Definition at line 51 of file llc-snap-header.cc.

References ns3::LLC_SNAP_HEADER_LENGTH, and NS_LOG_FUNCTION.

Referenced by Deserialize(), ns3::TapBridge::Filter(), and ns3::FdNetDevice::ForwardUp().

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◆ GetType()

uint16_t ns3::LlcSnapHeader::GetType ( void  )

◆ GetTypeId()

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

Get the type ID.

Returns
the object TypeId

Definition at line 58 of file llc-snap-header.cc.

References ns3::TypeId::SetParent().

Referenced by GetInstanceTypeId().

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◆ Print()

void ns3::LlcSnapHeader::Print ( std::ostream &  os) const
virtual
Parameters
osoutput stream This method is used by Packet::Print to print the content of a header as ascii data to a c++ output stream. Although the header is free to format its output as it wishes, it is recommended to follow a few rules to integrate with the packet pretty printer: start with flags, small field values located between a pair of parens. Values should be separated by whitespace. Follow the parens with the important fields, separated by whitespace. i.e.: (field1 val1 field2 val2 field3 val3) field4 val4 field5 val5

Implements ns3::Header.

Definition at line 73 of file llc-snap-header.cc.

References m_etherType, and NS_LOG_FUNCTION.

◆ Serialize()

void ns3::LlcSnapHeader::Serialize ( Buffer::Iterator  start) const
virtual
Parameters
startan iterator which points to where the header should be written.

This method is used by Packet::AddHeader to store a header into the byte buffer of a packet. The data written is expected to match bit-for-bit the representation of this header in a real network.

Implements ns3::Header.

Definition at line 83 of file llc-snap-header.cc.

References m_etherType, NS_LOG_FUNCTION, visualizer.core::start(), ns3::Buffer::Iterator::Write(), and ns3::Buffer::Iterator::WriteHtonU16().

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◆ SetType()

void ns3::LlcSnapHeader::SetType ( uint16_t  type)

Member Data Documentation

◆ m_etherType

uint16_t ns3::LlcSnapHeader::m_etherType
private

the Ethertype

Definition at line 69 of file llc-snap-header.h.

Referenced by Deserialize(), GetType(), Print(), Serialize(), and SetType().


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