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

#include "llc-snap-header.h"

Inheritance diagram for ns3::LlcSnapHeader:

Collaboration diagram for ns3::LlcSnapHeader:

Public Member Functions
	LlcSnapHeader ()

uint32_t	Deserialize (Buffer::Iterator start) override

TypeId	GetInstanceTypeId () const override
	Get the most derived TypeId for this Object.

uint32_t	GetSerializedSize () const override

uint16_t	GetType ()
	Return the Ethertype.

void	Print (std::ostream &os) const override

void	Serialize (Buffer::Iterator start) const override

void	SetType (uint16_t type)
	Set the Ethertype.

Public Member Functions inherited from ns3::Header
	~Header () override

virtual uint32_t	Deserialize (Buffer::Iterator start, Buffer::Iterator end)
	Deserialize the object from a buffer iterator.

Public Member Functions inherited from ns3::ObjectBase
virtual	~ObjectBase ()
	Virtual destructor.

void	GetAttribute (std::string name, AttributeValue &value, bool permissive=false) const
	Get the value of an attribute, raising fatal errors if unsuccessful.

bool	GetAttributeFailSafe (std::string name, AttributeValue &value) const
	Get the value of an attribute without raising errors.

void	SetAttribute (std::string name, const AttributeValue &value)
	Set a single attribute, raising fatal errors if unsuccessful.

bool	SetAttributeFailSafe (std::string name, const AttributeValue &value)
	Set a single attribute without raising errors.

bool	TraceConnect (std::string name, std::string context, const CallbackBase &cb)
	Connect a TraceSource to a Callback with a context.

bool	TraceConnectWithoutContext (std::string name, const CallbackBase &cb)
	Connect a TraceSource to a Callback without a context.

bool	TraceDisconnect (std::string name, std::string context, const CallbackBase &cb)
	Disconnect from a TraceSource a Callback previously connected with a context.

bool	TraceDisconnectWithoutContext (std::string name, const CallbackBase &cb)
	Disconnect from a TraceSource a Callback previously connected without a context.

Static Public Member Functions
static TypeId	GetTypeId ()
	Get the type ID.

Static Public Member Functions inherited from ns3::Header
static TypeId	GetTypeId ()
	Get the type ID.

Static Public Member Functions inherited from ns3::Chunk
static TypeId	GetTypeId ()
	Get the type ID.

Static Public Member Functions inherited from ns3::ObjectBase
static TypeId	GetTypeId ()
	Get the type ID.

Private Attributes
uint16_t	m_etherType
	the Ethertype

Additional Inherited Members
Protected Member Functions inherited from ns3::ObjectBase
void	ConstructSelf (const AttributeConstructionList &attributes)
	Complete construction of ObjectBase; invoked by derived classes.

virtual void	NotifyConstructionCompleted ()
	Notifier called once the ObjectBase is fully constructed.

Related Symbols inherited from ns3::ObjectBase
static TypeId	GetObjectIid ()
	Ensure the TypeId for ObjectBase gets fully configured to anchor the inheritance tree properly.

Detailed Description

Header for the LLC/SNAP encapsulation.

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

Definition at line 33 of file llc-snap-header.h.

Constructor & Destructor Documentation

◆ LlcSnapHeader()

ns3::LlcSnapHeader::LlcSnapHeader ( )

Definition at line 23 of file llc-snap-header.cc.

References NS_LOG_FUNCTION.

Member Function Documentation

◆ Deserialize()

uint32_t ns3::LlcSnapHeader::Deserialize ( Buffer::Iterator start )

overridevirtual

Parameters

start an 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 86 of file llc-snap-header.cc.

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

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◆ GetInstanceTypeId()

TypeId ns3::LlcSnapHeader::GetInstanceTypeId ( ) const

overridevirtual

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 60 of file llc-snap-header.cc.

References GetTypeId().

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◆ GetSerializedSize()

uint32_t ns3::LlcSnapHeader::GetSerializedSize ( ) const

overridevirtual

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 43 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 ( )

Return the Ethertype.

Returns: Ethertype

Definition at line 36 of file llc-snap-header.cc.

References m_etherType, and NS_LOG_FUNCTION.

Referenced by ns3::TapBridge::Filter(), ns3::FdNetDevice::ForwardUp(), ns3::WifiNetDevice::ForwardUp(), ns3::WimaxNetDevice::ForwardUp(), ns3::AlohaNoackNetDevice::NotifyReceptionEndOk(), WifiAcMappingTest::PacketEnqueuedInWifiMacQueue(), ns3::CsmaNetDevice::Receive(), and ns3::Ipv4L3ClickProtocol::SendDown().

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◆ GetTypeId()

TypeId ns3::LlcSnapHeader::GetTypeId ( )

static

Get the type ID.

Returns: the object TypeId

Definition at line 50 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

overridevirtual

Parameters

os output 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 66 of file llc-snap-header.cc.

References m_etherType, and NS_LOG_FUNCTION.

◆ Serialize()

void ns3::LlcSnapHeader::Serialize ( Buffer::Iterator start ) const

overridevirtual

Parameters

start an 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 76 of file llc-snap-header.cc.

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

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◆ SetType()

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

Set the Ethertype.

Parameters

type	the Ethertype

Definition at line 29 of file llc-snap-header.cc.

References m_etherType, and NS_LOG_FUNCTION.

Referenced by ns3::CsmaNetDevice::AddHeader(), ns3::WifiNetDevice::DoSend(), ns3::WimaxNetDevice::Send(), ns3::AlohaNoackNetDevice::SendFrom(), ns3::FdNetDevice::SendFrom(), and ns3::WimaxNetDevice::SendFrom().

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Member Data Documentation

◆ m_etherType

uint16_t ns3::LlcSnapHeader::m_etherType

private

the Ethertype

Definition at line 61 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:

src/network/utils/llc-snap-header.h
src/network/utils/llc-snap-header.cc

Public Member Functions

Static Public Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ LlcSnapHeader()

Member Function Documentation

◆ Deserialize()

◆ GetInstanceTypeId()

◆ GetSerializedSize()

◆ GetType()

◆ GetTypeId()

◆ Print()

◆ Serialize()

◆ SetType()

Member Data Documentation

◆ m_etherType