read and write tag data More...

#include "tag-buffer.h"

Collaboration diagram for ns3::TagBuffer:

Public Member Functions
	TagBuffer (uint8_t start, uint8_t end)
	Constructor.

void	CopyFrom (TagBuffer o)
	Copy the nternal structure of another TagBuffer.

void	Read (uint8_t *buffer, uint32_t size)

double	ReadDouble ()

TAG_BUFFER_INLINE uint16_t	ReadU16 ()

TAG_BUFFER_INLINE uint32_t	ReadU32 ()

uint64_t	ReadU64 ()

TAG_BUFFER_INLINE uint8_t	ReadU8 ()

void	TrimAtEnd (uint32_t trim)
	Trim some space from the end.

void	Write (const uint8_t *buffer, uint32_t size)

void	WriteDouble (double v)

TAG_BUFFER_INLINE void	WriteU16 (uint16_t v)

TAG_BUFFER_INLINE void	WriteU32 (uint32_t v)

void	WriteU64 (uint64_t v)

TAG_BUFFER_INLINE void	WriteU8 (uint8_t v)

Private Attributes
uint8_t *	m_current
	current TagBuffer position

uint8_t *	m_end
	end TagBuffer position

Detailed Description

read and write tag data

This class allows subclasses of the ns3::Tag base class to serialize and deserialize their data through a stream-like API. This class keeps track of the "current" point in the buffer and advances that "current" point every time data is written. The in-memory format of the data written by this class is unspecified.

If the user attempts to write more data in the buffer than he allocated with Tag::GetSerializedSize, he will trigger an NS_ASSERT error.

Definition at line 40 of file tag-buffer.h.

Constructor & Destructor Documentation

◆ TagBuffer()

ns3::TagBuffer::TagBuffer	(	uint8_t *	start,
		uint8_t *	end
	)

Constructor.

Parameters

start	start position
end	end position

Definition at line 180 of file tag-buffer.cc.

References NS_LOG_FUNCTION.

Member Function Documentation

◆ CopyFrom()

void ns3::TagBuffer::CopyFrom ( TagBuffer o )

Copy the nternal structure of another TagBuffer.

Parameters

o	the TagBuffer to copy from

Definition at line 196 of file tag-buffer.cc.

References ns3::Create(), m_current, m_end, NS_ASSERT, and NS_LOG_FUNCTION.

Referenced by ns3::ByteTagList::Add(), ns3::ByteTagList::AddAtEnd(), and ns3::ByteTagList::AddAtStart().

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◆ Read()

void ns3::TagBuffer::Read	(	uint8_t *	buffer,
		uint32_t	size
	)

Parameters

buffer	a pointer to the buffer where data should be written.
size	the number of bytes to read.

Read the number of bytes requested, advance the "current" point by the number of bytes read, return.

Definition at line 172 of file tag-buffer.cc.

References m_current, m_end, NS_ASSERT, and NS_LOG_FUNCTION.

Referenced by ns3::Ipv4FlowProbeTag::Deserialize(), and ns3::Address::Deserialize().

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◆ ReadDouble()

double ns3::TagBuffer::ReadDouble ( )

Returns: the value read

Read a double, advance the "current" point by the size of the data read, and, return the value read.

Definition at line 159 of file tag-buffer.cc.

References ns3::Create(), NS_LOG_FUNCTION, and ReadU8().

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◆ ReadU16()

uint16_t ns3::TagBuffer::ReadU16 ( )

Returns: the value read

Read two bytes, advance the "current" point by two, and return the value read.

Definition at line 195 of file tag-buffer.h.

References ns3::Create(), data, and ReadU8().

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◆ ReadU32()

uint32_t ns3::TagBuffer::ReadU32 ( )

Returns: the value read

Read four bytes, advance the "current" point by four, and return the value read.

Definition at line 206 of file tag-buffer.h.

References ns3::Create(), data, and ReadU8().

Referenced by ns3::Ipv4FlowProbeTag::Deserialize(), ns3::Ipv6FlowProbeTag::Deserialize(), ns3::FlowIdTag::Deserialize(), ns3::PyVizPacketTag::Deserialize(), and ns3::ByteTagList::Iterator::PrepareForNext().

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◆ ReadU64()

uint64_t ns3::TagBuffer::ReadU64 ( )

Returns: the value read

Read eight bytes, advance the "current" point by eight, and return the value read.

Definition at line 128 of file tag-buffer.cc.

References ns3::Create(), data, NS_LOG_FUNCTION, and ReadU8().

Referenced by IPv4TestTag::Deserialize(), and IPv6TestTag::Deserialize().

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◆ ReadU8()

uint8_t ns3::TagBuffer::ReadU8 ( )

Returns: the value read

Read one byte, advance the "current" point by one, and return the value read.

Definition at line 185 of file tag-buffer.h.

References m_current, m_end, and NS_ASSERT.

Referenced by anonymous_namespace{packet-test-suite.cc}::ATestTag< N >::Deserialize(), anonymous_namespace{packet-test-suite.cc}::ALargeTestTag::Deserialize(), BenchTag< N >::Deserialize(), ns3::Address::Deserialize(), ReadDouble(), ReadU16(), ReadU32(), and ReadU64().

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◆ TrimAtEnd()

void ns3::TagBuffer::TrimAtEnd ( uint32_t trim )

Trim some space from the end.

Parameters

trim	space to remove

Definition at line 188 of file tag-buffer.cc.

References ns3::Create(), m_current, m_end, NS_ASSERT, and NS_LOG_FUNCTION.

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◆ Write()

void ns3::TagBuffer::Write	(	const uint8_t *	buffer,
		uint32_t	size
	)

Parameters

buffer	a pointer to data to write
size	the size of the data to write

Write all the input data and advance the "current" point by the size of the data written.

Definition at line 118 of file tag-buffer.cc.

References ns3::Create(), NS_LOG_FUNCTION, and WriteU8().

Referenced by ns3::ByteTagList::Deserialize(), ns3::Ipv4FlowProbeTag::Serialize(), and ns3::Address::Serialize().

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◆ WriteDouble()

void ns3::TagBuffer::WriteDouble ( double v )

Parameters

v	the value to write

Write a double and advance the "current" point by the size of the data written.

Definition at line 107 of file tag-buffer.cc.

References ns3::Create(), NS_LOG_FUNCTION, and WriteU8().

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◆ WriteU16()

void ns3::TagBuffer::WriteU16 ( uint16_t v )

Parameters

v	the value to write

Write two bytes and advance the "current" point by two.

Definition at line 169 of file tag-buffer.h.

References data, and WriteU8().

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◆ WriteU32()

void ns3::TagBuffer::WriteU32 ( uint32_t v )

Parameters

v	the value to write

Write four bytes and advance the "current" point by four.

Definition at line 176 of file tag-buffer.h.

References data, and WriteU8().

Referenced by ns3::Ipv4FlowProbeTag::Serialize(), ns3::Ipv6FlowProbeTag::Serialize(), ns3::FlowIdTag::Serialize(), and ns3::PyVizPacketTag::Serialize().

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◆ WriteU64()

void ns3::TagBuffer::WriteU64 ( uint64_t v )

Parameters

v	the value to write

Write eight bytes and advance the "current" point by eight.

Definition at line 93 of file tag-buffer.cc.

References data, NS_LOG_FUNCTION, and WriteU8().

Referenced by IPv4TestTag::Serialize(), and IPv6TestTag::Serialize().

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◆ WriteU8()

void ns3::TagBuffer::WriteU8 ( uint8_t v )

Parameters

v	the value to write

Write one byte and advance the "current" point by one.

Definition at line 161 of file tag-buffer.h.

References m_current, m_end, and NS_ASSERT.

Referenced by anonymous_namespace{packet-test-suite.cc}::ATestTag< N >::Serialize(), anonymous_namespace{packet-test-suite.cc}::ALargeTestTag::Serialize(), BenchTag< N >::Serialize(), ns3::Address::Serialize(), Write(), WriteDouble(), WriteU16(), WriteU32(), and WriteU64().

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Member Data Documentation

◆ m_current

uint8_t* ns3::TagBuffer::m_current

private

current TagBuffer position

Definition at line 147 of file tag-buffer.h.

Referenced by CopyFrom(), Read(), ReadU8(), TrimAtEnd(), and WriteU8().

◆ m_end

uint8_t* ns3::TagBuffer::m_end

private

end TagBuffer position

Definition at line 148 of file tag-buffer.h.

Referenced by CopyFrom(), Read(), ReadU8(), TrimAtEnd(), and WriteU8().

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

src/network/model/tag-buffer.h
src/network/model/tag-buffer.cc

Public Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ TagBuffer()

Member Function Documentation

◆ CopyFrom()

◆ Read()

◆ ReadDouble()

◆ ReadU16()

◆ ReadU32()

◆ ReadU64()

◆ ReadU8()

◆ TrimAtEnd()

◆ Write()

◆ WriteDouble()

◆ WriteU16()

◆ WriteU32()

◆ WriteU64()

◆ WriteU8()

Member Data Documentation

◆ m_current

◆ m_end