ns3::TagBuffer Class Reference

read and write tag data More...

#include <tag-buffer.h>

Public Member Functions
	TagBuffer (uint8_t *start, uint8_t *end)
void	CopyFrom (TagBuffer o)
void	Read (uint8_t *buffer, uint32_t size)
double	ReadDouble (void)
TAG_BUFFER_INLINE uint16_t	ReadU16 (void)
TAG_BUFFER_INLINE uint32_t	ReadU32 (void)
uint64_t	ReadU64 (void)
TAG_BUFFER_INLINE uint8_t	ReadU8 (void)
void	TrimAtEnd (uint32_t trim)
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
uint8_t *	m_end

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 everytime 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 51 of file tag-buffer.h.

Member Function Documentation

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 176 of file tag-buffer.cc.

References NS_LOG_FUNCTION, and ReadU8().

Referenced by ns3::RlcTag::Deserialize(), ns3::PdcpTag::Deserialize(), ns3::TxModeTag::Deserialize(), ns3::Ipv4PacketInfoTag::Deserialize(), ns3::Ipv6PacketInfoTag::Deserialize(), ns3::Address::Deserialize(), and ns3::DeviceNameTag::Deserialize().

double ns3::TagBuffer::ReadDouble

(

void

)

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 164 of file tag-buffer.cc.

References NS_LOG_FUNCTION, and ReadU8().

Referenced by ns3::SnrTag::Deserialize().

uint16_t ns3::TagBuffer::ReadU16

(

void

)

Returns

the value read

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

Definition at line 189 of file tag-buffer.h.

References ReadU8().

Referenced by ns3::LtePhyTag::Deserialize(), ns3::PacketChannelPacketTag::Deserialize(), ns3::EpsBearerTag::Deserialize(), and ns3::LteRadioBearerTag::Deserialize().

uint32_t ns3::TagBuffer::ReadU32

(

void

)

Returns

the value read

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

Definition at line 199 of file tag-buffer.h.

References ReadU8().

Referenced by ns3::FlowIdTag::Deserialize(), ns3::Ipv4FlowProbeTag::Deserialize(), ns3::Ipv4PacketInfoTag::Deserialize(), ns3::dot11s::HwmpTag::Deserialize(), ns3::PyVizPacketTag::Deserialize(), ns3::dsdv::DeferredRouteOutputTag::Deserialize(), and ns3::aodv::DeferredRouteOutputTag::Deserialize().

uint64_t ns3::TagBuffer::ReadU64

(

void

)

Returns

the value read

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

Definition at line 134 of file tag-buffer.cc.

References NS_LOG_FUNCTION, and ReadU8().

Referenced by ns3::DelayJitterEstimationTimestampTag::Deserialize(), and ns3::AnimByteTag::Deserialize().

uint8_t ns3::TagBuffer::ReadU8

(

void

)

Returns

the value read

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

Definition at line 179 of file tag-buffer.h.

References NS_ASSERT.

Referenced by MyTag::Deserialize(), ns3::PacketTypePacketTag::Deserialize(), ns3::LteRlcSduStatusTag::Deserialize(), anonymous_namespace{packet-test-suite.cc}::ATestTag< N >::Deserialize(), ns3::Ipv4PacketInfoTag::Deserialize(), ns3::EpsBearerTag::Deserialize(), ns3::dot11s::HwmpTag::Deserialize(), ns3::Ipv6PacketInfoTag::Deserialize(), ns3::flame::FlameTag::Deserialize(), ns3::LteRadioBearerTag::Deserialize(), ns3::QosTag::Deserialize(), BenchTag< N >::Deserialize(), ns3::PacketSocketTag::Deserialize(), ns3::Address::Deserialize(), ns3::DeviceNameTag::Deserialize(), ns3::SocketIpTtlTag::Deserialize(), ns3::SocketIpv6HopLimitTag::Deserialize(), ns3::SocketSetDontFragmentTag::Deserialize(), ns3::SocketIpTosTag::Deserialize(), ns3::SocketIpv6TclassTag::Deserialize(), Read(), ReadDouble(), ReadU16(), ReadU32(), and ReadU64().

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 125 of file tag-buffer.cc.

References NS_LOG_FUNCTION, and WriteU8().

Referenced by ns3::RlcTag::Serialize(), ns3::PdcpTag::Serialize(), ns3::TxModeTag::Serialize(), ns3::Ipv4PacketInfoTag::Serialize(), ns3::Ipv6PacketInfoTag::Serialize(), ns3::Address::Serialize(), and ns3::DeviceNameTag::Serialize().

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 115 of file tag-buffer.cc.

References NS_LOG_FUNCTION, and WriteU8().

Referenced by ns3::SnrTag::Serialize().

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 164 of file tag-buffer.h.

References WriteU8().

Referenced by ns3::LtePhyTag::Serialize(), ns3::PacketChannelPacketTag::Serialize(), ns3::EpsBearerTag::Serialize(), and ns3::LteRadioBearerTag::Serialize().

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 170 of file tag-buffer.h.

References WriteU8().

Referenced by ns3::ByteTagList::Add(), ns3::FlowIdTag::Serialize(), ns3::Ipv4FlowProbeTag::Serialize(), ns3::Ipv4PacketInfoTag::Serialize(), ns3::dot11s::HwmpTag::Serialize(), ns3::PyVizPacketTag::Serialize(), ns3::dsdv::DeferredRouteOutputTag::Serialize(), and ns3::aodv::DeferredRouteOutputTag::Serialize().

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 102 of file tag-buffer.cc.

References NS_LOG_FUNCTION, and WriteU8().

Referenced by ns3::DelayJitterEstimationTimestampTag::Serialize(), and ns3::AnimByteTag::Serialize().

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 156 of file tag-buffer.h.

References NS_ASSERT.

Referenced by MyTag::Serialize(), ns3::PacketTypePacketTag::Serialize(), ns3::LteRlcSduStatusTag::Serialize(), anonymous_namespace{packet-test-suite.cc}::ATestTag< N >::Serialize(), ns3::Ipv4PacketInfoTag::Serialize(), ns3::EpsBearerTag::Serialize(), ns3::dot11s::HwmpTag::Serialize(), ns3::Ipv6PacketInfoTag::Serialize(), ns3::flame::FlameTag::Serialize(), ns3::LteRadioBearerTag::Serialize(), ns3::QosTag::Serialize(), BenchTag< N >::Serialize(), ns3::PacketSocketTag::Serialize(), ns3::Address::Serialize(), ns3::DeviceNameTag::Serialize(), ns3::SocketIpTtlTag::Serialize(), ns3::SocketIpv6HopLimitTag::Serialize(), ns3::SocketSetDontFragmentTag::Serialize(), ns3::SocketIpTosTag::Serialize(), ns3::SocketIpv6TclassTag::Serialize(), Write(), WriteDouble(), WriteU16(), WriteU32(), and WriteU64().

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

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