network packets More...

#include "packet.h"

Inheritance diagram for ns3::Packet:

Collaboration diagram for ns3::Packet:

Public Types
typedef void(*	AddressTracedCallback) (Ptr< const Packet > packet, const Address &address)
	TracedCallback signature for packet and Address. More...

typedef void(*	Mac48AddressTracedCallback) (Ptr< const Packet > packet, Mac48Address mac)
	TracedCallback signature for packet and Mac48Address. More...

typedef void(*	SinrTracedCallback) (Ptr< const Packet > packet, double sinr)
	TracedCallback signature for packet and SINR. More...

typedef void(*	SizeTracedCallback) (uint32_t oldSize, uint32_t newSize)
	TracedCallback signature for changes in packet size. More...

typedef void(*	TracedCallback) (Ptr< const Packet > packet)
	TracedCallback signature for Ptr<Packet> More...

Public Member Functions
	Packet ()
	Create an empty packet with a new uid (as returned by getUid). More...

	Packet (const Packet &o)
	Copy constructor. More...

	Packet (uint32_t size)
	Create a packet with a zero-filled payload. More...

	Packet (uint8_t const *buffer, uint32_t size, bool magic)
	Create a new packet from the serialized buffer. More...

	Packet (uint8_t const *buffer, uint32_t size)
	Create a packet with payload filled with the content of this buffer. More...

void	AddAtEnd (Ptr< const Packet > packet)
	Concatenate the input packet at the end of the current packet. More...

void	AddByteTag (const Tag &tag) const
	Tag each byte included in this packet with a new byte tag. More...

void	AddHeader (const Header &header)
	Add header to this packet. More...

void	AddPacketTag (const Tag &tag) const
	Add a packet tag. More...

void	AddPaddingAtEnd (uint32_t size)
	Add a zero-filled padding to the packet. More...

void	AddTrailer (const Trailer &trailer)
	Add trailer to this packet. More...

PacketMetadata::ItemIterator	BeginItem (void) const
	Returns an iterator which points to the first 'item' stored in this buffer. More...

Ptr< Packet >	Copy (void) const
	performs a COW copy of the packet. More...

uint32_t	CopyData (uint8_t *buffer, uint32_t size) const
	Copy the packet contents to a byte buffer. More...

void	CopyData (std::ostream *os, uint32_t size) const
	Copy the packet contents to an output stream. More...

Ptr< Packet >	CreateFragment (uint32_t start, uint32_t length) const
	Create a new packet which contains a fragment of the original packet. More...

bool	FindFirstMatchingByteTag (Tag &tag) const
	Finds the first tag matching the parameter Tag type. More...

ByteTagIterator	GetByteTagIterator (void) const
	Retiurns an iterator over the set of byte tags included in this packet. More...

Ptr< NixVector >	GetNixVector (void) const
	Get the packet nix-vector. More...

PacketTagIterator	GetPacketTagIterator (void) const
	Returns an object which can be used to iterate over the list of packet tags. More...

uint32_t	GetSerializedSize (void) const
	Returns number of bytes required for packet serialization. More...

uint32_t	GetSize (void) const
	Returns the the size in bytes of the packet (including the zero-filled initial payload). More...

uint64_t	GetUid (void) const
	Returns the packet's Uid. More...

Packet &	operator= (const Packet &o)
	Basic assignment. More...

uint32_t	PeekHeader (Header &header) const
	Deserialize but does not remove the header from the internal buffer. More...

bool	PeekPacketTag (Tag &tag) const
	Search a matching tag and call Tag::Deserialize if it is found. More...

uint32_t	PeekTrailer (Trailer &trailer)
	Deserialize but does not remove a trailer from the internal buffer. More...

void	Print (std::ostream &os) const
	Print the packet contents. More...

void	PrintByteTags (std::ostream &os) const
	Iterate over the byte tags present in this packet, and invoke the Print method of each tag stored in the packet. More...

void	PrintPacketTags (std::ostream &os) const
	Print the list of packet tags. More...

void	RemoveAllByteTags (void)
	Remove all byte tags stored in this packet. More...

void	RemoveAllPacketTags (void)
	Remove all packet tags. More...

void	RemoveAtEnd (uint32_t size)
	Remove size bytes from the end of the current packet. More...

void	RemoveAtStart (uint32_t size)
	Remove size bytes from the start of the current packet. More...

uint32_t	RemoveHeader (Header &header)
	Deserialize and remove the header from the internal buffer. More...

bool	RemovePacketTag (Tag &tag)
	Remove a packet tag. More...

uint32_t	RemoveTrailer (Trailer &trailer)
	Remove a deserialized trailer from the internal buffer. More...

bool	ReplacePacketTag (Tag &tag)
	Replace the value of a packet tag. More...

uint32_t	Serialize (uint8_t *buffer, uint32_t maxSize) const
	Serialize a packet, tags, and metadata into a byte buffer. More...

void	SetNixVector (Ptr< NixVector > nixVector)
	Set the packet nix-vector. More...

std::string	ToString (void) const
	Return a string representation of the packet. More...

Public Member Functions inherited from ns3::SimpleRefCount< Packet >
	SimpleRefCount ()
	Constructor. More...

	SimpleRefCount (const SimpleRefCount &o)
	Copy constructor. More...

uint32_t	GetReferenceCount (void) const
	Get the reference count of the object. More...

SimpleRefCount &	operator= (const SimpleRefCount &o)
	Assignment. More...

void	Ref (void) const
	Increment the reference count. More...

void	Unref (void) const
	Decrement the reference count. More...

Static Public Member Functions
static void	EnableChecking (void)
	Enable packets metadata checking. More...

static void	EnablePrinting (void)
	Enable printing packets metadata. More...

Static Public Member Functions inherited from ns3::SimpleRefCount< Packet >
static void	Cleanup (void)
	Noop. More...

Private Member Functions
	Packet (const Buffer &buffer, const ByteTagList &byteTagList, const PacketTagList &packetTagList, const PacketMetadata &metadata)
	Constructor. More...

uint32_t	Deserialize (uint8_t const *buffer, uint32_t size)

Private Attributes
Buffer	m_buffer
	the packet buffer (it's actual contents) More...

ByteTagList	m_byteTagList
	the ByteTag list More...

PacketMetadata	m_metadata
	the packet's metadata More...

Ptr< NixVector >	m_nixVector
	the packet's Nix vector More...

PacketTagList	m_packetTagList
	the packet's Tag list More...

Static Private Attributes
static uint32_t	m_globalUid = 0
	Global counter of packets Uid. More...

Detailed Description

network packets

Each network packet contains a byte buffer, a set of byte tags, a set of packet tags, and metadata.

The byte buffer stores the serialized content of the headers and trailers added to a packet. The serialized representation of these headers is expected to match that of real network packets bit for bit (although nothing forces you to do this) which means that the content of a packet buffer is expected to be that of a real packet.
The metadata describes the type of the headers and trailers which were serialized in the byte buffer. The maintenance of metadata is optional and disabled by default. To enable it, you must call Packet::EnablePrinting and this will allow you to get non-empty output from Packet::Print. If you wish to only enable checking of metadata, and do not need any printing capability, you can call Packet::EnableChecking: its runtime cost is lower than Packet::EnablePrinting.
The set of tags contain simulation-specific information which cannot be stored in the packet byte buffer because the protocol headers or trailers have no standard-conformant field for this information. So-called 'byte' tags are used to tag a subset of the bytes in the packet byte buffer while 'packet' tags are used to tag the packet itself. The main difference between these two kinds of tags is what happens when packets are copied, fragmented, and reassembled: 'byte' tags follow bytes while 'packet' tags follow packets. Another important difference between these two kinds of tags is that byte tags cannot be removed and are expected to be written once, and read many times, while packet tags are expected to be written once, read many times, and removed exactly once. An example of a 'byte' tag is a FlowIdTag which contains a flow id and is set by the application generating traffic. An example of a 'packet' tag is a cross-layer qos class id set by an application and processed by a lower-level MAC layer.

Implementing a new type of Header or Trailer for a new protocol is pretty easy and is a matter of creating a subclass of the ns3::Header or of the ns3::Trailer base class, and implementing the methods described in their respective API documentation.

Implementing a new type of Tag requires roughly the same amount of work and this work is described in the ns3::Tag API documentation.

The performance aspects copy-on-write semantics of the Packet API are discussed in Packet Performance

Definition at line 227 of file packet.h.

Member Typedef Documentation

typedef void(* ns3::Packet::AddressTracedCallback) (Ptr< const Packet > packet, const Address &address)

TracedCallback signature for packet and Address.

Parameters

[in]	packet	The packet.
[in]	address	The address.

Definition at line 673 of file packet.h.

typedef void(* ns3::Packet::Mac48AddressTracedCallback) (Ptr< const Packet > packet, Mac48Address mac)

TracedCallback signature for packet and Mac48Address.

Parameters

[in]	packet	The packet.
[in]	mac	The Mac48Address.

Definition at line 682 of file packet.h.

typedef void(* ns3::Packet::SinrTracedCallback) (Ptr< const Packet > packet, double sinr)

TracedCallback signature for packet and SINR.

Parameters

[in]	packet	The packet.
[in]	sinr	The received SINR.

Definition at line 700 of file packet.h.

typedef void(* ns3::Packet::SizeTracedCallback) (uint32_t oldSize, uint32_t newSize)

TracedCallback signature for changes in packet size.

Parameters

[in]	oldSize	The previous packet's size.
[in]	newSize	The actual packet's size.

Definition at line 691 of file packet.h.

typedef void(* ns3::Packet::TracedCallback) (Ptr< const Packet > packet)

TracedCallback signature for Ptr<Packet>

Parameters

[in] packet The packet.

Definition at line 664 of file packet.h.

Constructor & Destructor Documentation

ns3::Packet::Packet ( )

Create an empty packet with a new uid (as returned by getUid).

Definition at line 130 of file packet.cc.

References m_globalUid.

Referenced by CreateFragment().

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ns3::Packet::Packet ( const Packet & o )

Copy constructor.

Parameters

o	object to copy

Definition at line 146 of file packet.cc.

References ns3::NixVector::Copy(), and m_nixVector.

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ns3::Packet::Packet ( uint32_t size )

Create a packet with a zero-filled payload.

The memory necessary for the payload is not allocated: it will be allocated at any later point if you attempt to fragment this packet or to access the zero-filled bytes. The packet is allocated with a new uid (as returned by getUid).

Parameters

size	the size of the zero-filled payload

Definition at line 172 of file packet.cc.

References m_globalUid.

ns3::Packet::Packet	(	uint8_t const *	buffer,
		uint32_t	size,
		bool	magic
	)

Create a new packet from the serialized buffer.

This new packet is identical to the serialized packet contained in the buffer and is magically deserialized for you

Parameters

buffer	the serialized packet to be created
size	the size of the packet for deserialization
magic	allows packet deserialization; asserts when set to false

Definition at line 187 of file packet.cc.

References Deserialize(), and NS_ASSERT.

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ns3::Packet::Packet	(	uint8_t const *	buffer,
		uint32_t	size
	)

Create a packet with payload filled with the content of this buffer.

The input data is copied: the input buffer is untouched.

Parameters

buffer	the data to store in the packet.
size	the size of the input buffer.

Definition at line 198 of file packet.cc.

References ns3::Buffer::AddAtStart(), ns3::Buffer::Begin(), m_buffer, m_globalUid, and ns3::Buffer::Iterator::Write().

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ns3::Packet::Packet	(	const Buffer &	buffer,
		const ByteTagList &	byteTagList,
		const PacketTagList &	packetTagList,
		const PacketMetadata &	metadata
	)

private

Constructor.

Parameters

buffer	the packet buffer
byteTagList	the ByteTag list
packetTagList	the packet's Tag list
metadata	the packet's metadata

Definition at line 217 of file packet.cc.

Member Function Documentation

void ns3::Packet::AddAtEnd ( Ptr< const Packet > packet )

Concatenate the input packet at the end of the current packet.

This does not alter the uid of either packet.

Parameters

packet packet to concatenate

Definition at line 311 of file packet.cc.

References ns3::ByteTagList::Add(), ns3::ByteTagList::AddAtEnd(), ns3::PacketMetadata::AddAtEnd(), ns3::Buffer::AddAtEnd(), ns3::ByteTagList::AddAtStart(), ns3::ByteTagList::Adjust(), GetSize(), m_buffer, m_byteTagList, m_metadata, and NS_LOG_FUNCTION.

Referenced by ns3::OriginatorRxStatus::AccumulateLastFragment(), ns3::CsmaNetDevice::AddHeader(), ns3::MpduStandardAggregator::AddHeaderAndPad(), ns3::MpduStandardAggregator::Aggregate(), ns3::MsduStandardAggregator::Aggregate(), ns3::MpduStandardAggregator::AggregateVhtSingleMpdu(), benchByteTags(), benchFragment(), ns3::PendingData::CopyFromOffset(), ns3::TcpTxBuffer::CopyFromSequence(), ns3::LteRlcUm::DoNotifyTxOpportunity(), ns3::LteRlcAm::DoNotifyTxOpportunity(), ns3::BaseStationNetDevice::DoReceive(), ns3::SubscriberStationNetDevice::DoReceive(), Ns3WimaxFragmentationTestCase::DoRun(), PacketMetadataTest::DoRun(), PacketTest::DoRun(), ns3::Ipv6ExtensionFragment::Fragments::GetPacket(), ns3::SixLowPanNetDevice::Fragments::GetPacket(), ns3::Ipv4L3Protocol::Fragments::GetPacket(), ns3::Ipv6ExtensionFragment::Fragments::GetPartialPacket(), ns3::Ipv4L3Protocol::Fragments::GetPartialPacket(), ns3::LteRlcUm::ReassembleAndDeliver(), ns3::LteRlcAm::ReassembleAndDeliver(), ns3::olsr::RoutingProtocol::SendQueuedMessages(), and ns3::Icmpv6L4Protocol::SendRedirection().

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void ns3::Packet::AddByteTag ( const Tag & tag ) const

Tag each byte included in this packet with a new byte tag.

Parameters

tag	the new tag to add to this packet

Note that adding a tag is a const operation which is pretty un-intuitive. The rationale is that the content and behavior of a packet is not changed when a tag is added to a packet: any code which was not aware of the new tag is going to work just the same if the new tag is added. The real reason why adding a tag was made a const operation is to allow a trace sink which gets a packet to tag the packet, even if the packet is const (and most trace sources should use const packets because it would be totally evil to allow a trace sink to modify the content of a packet).

Definition at line 789 of file packet.cc.

References ns3::ObjectBase::GetInstanceTypeId(), ns3::TypeId::GetName(), ns3::Tag::GetSerializedSize(), GetSize(), list, m_byteTagList, NS_LOG_FUNCTION, and ns3::Tag::Serialize().

Referenced by ns3::AnimationInterface::AddByteTag(), benchByteTags(), ns3::LteRlcTm::DoNotifyTxOpportunity(), ns3::LteRlcUm::DoNotifyTxOpportunity(), ns3::LteRlcAm::DoNotifyTxOpportunity(), ns3::LteRlcSm::DoNotifyTxOpportunity(), PacketTest::DoRun(), ns3::LtePdcp::DoTransmitPdcpSdu(), ns3::DelayJitterEstimation::PrepareTx(), CollisionExperiment::SendA(), CollisionExperiment::SendB(), Ipv4FragmentationTest::SendClient(), Ipv6FragmentationTest::SendClient(), ns3::Ipv4FlowProbe::SendOutgoingLogger(), ns3::Ipv6FlowProbe::SendOutgoingLogger(), Sender::SendPacket(), and ns3::PyViz::TraceNetDevTxCommon().

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void ns3::Packet::AddHeader ( const Header & header )

Add header to this packet.

This method invokes the Header::GetSerializedSize and Header::Serialize methods to reserve space in the buffer and request the header to serialize itself in the packet buffer.

Parameters

header a reference to the header to add to this packet.

Definition at line 255 of file packet.cc.

References ns3::ByteTagList::AddAtStart(), ns3::Buffer::AddAtStart(), ns3::PacketMetadata::AddHeader(), ns3::ByteTagList::Adjust(), ns3::Buffer::Begin(), ns3::ObjectBase::GetInstanceTypeId(), ns3::TypeId::GetName(), ns3::Header::GetSerializedSize(), m_buffer, m_byteTagList, m_metadata, NS_LOG_FUNCTION, and ns3::Header::Serialize().

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void ns3::Packet::AddPacketTag ( const Tag & tag ) const

Add a packet tag.

Parameters

tag	the packet tag type to add.

Note that this method is const, that is, it does not modify the state of this packet, which is fairly un-intuitive. See AddByteTag"()" discussion.

Definition at line 822 of file packet.cc.

References ns3::PacketTagList::Add(), ns3::ObjectBase::GetInstanceTypeId(), ns3::TypeId::GetName(), ns3::Tag::GetSerializedSize(), m_packetTagList, and NS_LOG_FUNCTION.

Referenced by ns3::MacLow::AggregateToAmpdu(), benchD(), ns3::CoDelQueue::DoEnqueue(), ns3::LteRlcUm::DoNotifyTxOpportunity(), ns3::LteRlcAm::DoNotifyTxOpportunity(), ns3::UeManager::DoReceivePdcpSdu(), PacketTest::DoRun(), ns3::RipNg::DoSendRouteUpdate(), ns3::UdpSocketImpl::DoSendTo(), ns3::VsaManager::DoSendVsa(), ns3::LteRlcUm::DoTransmitPdcpPdu(), ns3::LteRlcTm::DoTransmitPdcpPdu(), ns3::LteRlcAm::DoTransmitPdcpPdu(), ns3::LteUeMac::DoTransmitPdu(), ns3::LteEnbMac::DoTransmitPdu(), ns3::MacLow::ForwardDown(), ns3::dot11s::HwmpProtocol::ForwardUnicast(), ns3::Ipv4RawSocketImpl::ForwardUp(), ns3::Ipv6RawSocketImpl::ForwardUp(), ns3::UdpSocketImpl::ForwardUp(), ns3::PacketSocket::ForwardUp(), ns3::UdpSocketImpl::ForwardUp6(), ns3::RipNg::HandleRequests(), ns3::WifiRemoteStationManager::PrepareForQueue(), ns3::dot11s::HwmpProtocol::ProactivePathResolved(), ns3::dsr::DsrOptionRreq::Process(), ns3::dot11s::HwmpProtocol::ReactivePathResolved(), ns3::NscTcpSocketImpl::ReadPendingData(), ns3::flame::FlameProtocolMac::Receive(), ns3::MeshWifiInterfaceMac::Receive(), ns3::dot11s::HwmpProtocolMac::ReceiveData(), ns3::TcpSocketBase::Recv(), ns3::dot11s::HwmpProtocol::RequestRoute(), ns3::flame::FlameProtocol::RequestRoute(), ns3::aodv::RoutingProtocol::RouteOutput(), ns3::dsdv::RoutingProtocol::RouteOutput(), ns3::dsr::DsrRouting::RouteRequestTimerExpire(), EpsBearerTagUdpClient::Send(), ns3::Radvd::Send(), ns3::WaveNetDevice::Send(), ns3::MacLow::SendAckAfterData(), Ipv4FragmentationTest::SendClient(), Ipv6FragmentationTest::SendClient(), ns3::MacLow::SendCtsAfterRts(), ns3::TcpSocketBase::SendDataPacket(), ns3::TcpSocketSmallAcks::SendEmptyPacket(), ns3::TcpSocketBase::SendEmptyPacket(), ns3::dsr::DsrRouting::SendErrorRequest(), ns3::SimpleNetDevice::SendFrom(), ns3::dsr::DsrRouting::SendInitialRequest(), ns3::Icmpv6L4Protocol::SendMessage(), ns3::RipNg::SendRouteRequest(), ns3::UdpSocketImpl::SendTo(), ns3::EpcEnbApplication::SendToLteSocket(), and ns3::WaveNetDevice::SendX().

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void ns3::Packet::AddPaddingAtEnd ( uint32_t size )

Add a zero-filled padding to the packet.

Parameters

size	number of padding bytes to add.

Definition at line 323 of file packet.cc.

References ns3::ByteTagList::AddAtEnd(), ns3::Buffer::AddAtEnd(), ns3::PacketMetadata::AddPaddingAtEnd(), GetSize(), m_buffer, m_byteTagList, m_metadata, and NS_LOG_FUNCTION.

Referenced by PacketTest::DoRun(), and SendStuff().

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void ns3::Packet::AddTrailer ( const Trailer & trailer )

Add trailer to this packet.

This method invokes the Trailer::GetSerializedSize and Trailer::Serialize methods to reserve space in the buffer and request the trailer to serialize itself in the packet buffer.

Parameters

trailer a reference to the trailer to add to this packet.

Definition at line 283 of file packet.cc.

References ns3::ByteTagList::AddAtEnd(), ns3::Buffer::AddAtEnd(), ns3::PacketMetadata::AddTrailer(), ns3::Buffer::End(), ns3::ObjectBase::GetInstanceTypeId(), ns3::TypeId::GetName(), ns3::Trailer::GetSerializedSize(), GetSize(), m_buffer, m_byteTagList, m_metadata, NS_LOG_FUNCTION, and ns3::Trailer::Serialize().

Referenced by ns3::CsmaNetDevice::AddHeader(), ns3::MacLow::AggregateToAmpdu(), LrWpanPacketTestCase::DoRun(), PacketTest::DoRun(), ns3::MacLow::ForwardDown(), ns3::LrWpanMac::McpsDataRequest(), ns3::LrWpanMac::SendAck(), ns3::MacLow::SendAckAfterData(), ns3::MacLow::SendBlockAckResponse(), ns3::MacLow::SendCtsAfterRts(), ns3::MacLow::SendCtsToSelf(), ns3::MacLow::SendDataAfterCts(), ns3::MacLow::SendDataPacket(), and ns3::MacLow::SendRtsForPacket().

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PacketMetadata::ItemIterator ns3::Packet::BeginItem ( void ) const

Returns an iterator which points to the first 'item' stored in this buffer.

Note that this iterator will point to an empty array of items if you don't call EnablePrinting or EnableChecking before.

Returns: an iterator

See also: EnablePrinting EnableChecking

Definition at line 527 of file packet.cc.

References ns3::PacketMetadata::BeginItem(), m_buffer, and m_metadata.

Referenced by PacketMetadataTest::CheckHistory(), and ns3::PyViz::FilterPacket().

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Ptr< Packet > ns3::Packet::Copy ( void ) const

performs a COW copy of the packet.

Returns: a COW copy of the packet.

The returns packet will behave like an independent copy of the original packet, even though they both share the same datasets internally.

Definition at line 122 of file packet.cc.

References ns3::PacketTagIterator::Packet.

uint32_t ns3::Packet::CopyData	(	uint8_t *	buffer,
		uint32_t	size
	)		const

Copy the packet contents to a byte buffer.

Parameters

buffer	a pointer to a byte buffer where the packet data should be copied.
size	the size of the byte buffer.

Returns: the number of bytes read from the packet

No more than size bytes will be copied by this function.

Definition at line 354 of file packet.cc.

References ns3::Buffer::CopyData(), and m_buffer.

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void ns3::Packet::CopyData	(	std::ostream *	os,
		uint32_t	size
	)		const

Copy the packet contents to an output stream.

Parameters

os	pointer to output stream in which we want to write the packet data.
size	the maximum number of bytes we want to write in the output stream.

Definition at line 360 of file packet.cc.

References ns3::Buffer::CopyData(), and m_buffer.

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Ptr< Packet > ns3::Packet::CreateFragment	(	uint32_t	start,
		uint32_t	length
	)		const

Create a new packet which contains a fragment of the original packet.

The returned packet shares the same uid as this packet.

Parameters

start	offset from start of packet to start of fragment to create
length	length of fragment to create

Returns: a fragment of the original packet

Definition at line 228 of file packet.cc.

References ns3::ByteTagList::Adjust(), ns3::PacketMetadata::CreateFragment(), ns3::Buffer::CreateFragment(), ns3::Buffer::GetSize(), m_buffer, m_byteTagList, m_metadata, m_packetTagList, NS_ASSERT, NS_LOG_FUNCTION, and Packet().

Referenced by ns3::TcpRxBuffer::Add(), benchFragment(), ns3::PendingData::CopyFromOffset(), ns3::TcpTxBuffer::CopyFromSequence(), ns3::MsduAggregator::Deaggregate(), ns3::MpduAggregator::Deaggregate(), ns3::WimaxMacQueue::Dequeue(), ns3::Ipv4L3Protocol::DoFragmentation(), ns3::SixLowPanNetDevice::DoFragmentation(), ns3::LteRlcUm::DoNotifyTxOpportunity(), ns3::LteRlcAm::DoNotifyTxOpportunity(), PacketMetadataTest::DoRun(), PacketTest::DoRun(), ns3::DcaTxop::GetFragmentPacket(), ns3::EdcaTxopN::GetFragmentPacket(), ns3::Ipv6ExtensionFragment::GetFragments(), ns3::PcapSniffRxEvent(), ns3::PcapSniffTxEvent(), ns3::LteRlcUm::ReassembleAndDeliver(), ns3::LteRlcAm::ReassembleAndDeliver(), ns3::Ipv4RawSocketImpl::RecvFrom(), ns3::Ipv6RawSocketImpl::RecvFrom(), ns3::Icmpv6L4Protocol::SendErrorDestinationUnreachable(), ns3::Icmpv6L4Protocol::SendErrorParameterError(), ns3::Icmpv6L4Protocol::SendErrorTimeExceeded(), ns3::Icmpv6L4Protocol::SendErrorTooBig(), and ns3::Icmpv6L4Protocol::SendRedirection().

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uint32_t ns3::Packet::Deserialize	(	uint8_t const *	buffer,
		uint32_t	size
	)

private

Todo:: Deserialize Tags

Definition at line 707 of file packet.cc.

References ns3::NixVector::Deserialize(), ns3::PacketMetadata::Deserialize(), ns3::Buffer::Deserialize(), m_buffer, m_metadata, m_nixVector, NS_ASSERT, and NS_LOG_FUNCTION.

Referenced by Packet().

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void ns3::Packet::EnableChecking ( void )

static

Enable packets metadata checking.

The packet metadata is also used to perform extensive sanity checks at runtime when performing operations on a Packet. For example, this metadata is used to verify that when you remove a header from a packet, this same header was actually present at the front of the packet. These errors will be detected and will abort the program.

Definition at line 540 of file packet.cc.

References ns3::PacketMetadata::EnableChecking(), and NS_LOG_FUNCTION_NOARGS.

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void ns3::Packet::EnablePrinting ( void )

static

Enable printing packets metadata.

By default, packets do not keep around enough metadata to perform the operations requested by the Print methods. If you want to be able the Packet::Print method, you need to invoke this method at least once during the simulation setup and before any packet is created.

Definition at line 533 of file packet.cc.

References ns3::PacketMetadata::Enable(), and NS_LOG_FUNCTION_NOARGS.

Referenced by ns3::TcpGeneralTest::DoRun(), ns3::UanHelper::EnableAscii(), ns3::YansWavePhyHelper::EnableAsciiInternal(), ns3::FdNetDeviceHelper::EnableAsciiInternal(), ns3::PointToPointHelper::EnableAsciiInternal(), ns3::LrWpanHelper::EnableAsciiInternal(), ns3::CsmaHelper::EnableAsciiInternal(), ns3::YansWifiPhyHelper::EnableAsciiInternal(), ns3::WimaxHelper::EnableAsciiInternal(), ns3::InternetStackHelper::EnableAsciiIpv4Internal(), ns3::InternetStackHelper::EnableAsciiIpv6Internal(), and ns3::AnimationInterface::EnablePacketMetadata().

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bool ns3::Packet::FindFirstMatchingByteTag ( Tag & tag ) const

Finds the first tag matching the parameter Tag type.

Parameters

tag	the byte tag type to search in this packet

Returns: true if the requested tag type was found, false otherwise.

If the requested tag type is found, it is copied in the user's provided tag instance.

Definition at line 805 of file packet.cc.

References GetByteTagIterator(), ns3::ObjectBase::GetInstanceTypeId(), ns3::ByteTagIterator::Item::GetTag(), ns3::ByteTagIterator::Item::GetTypeId(), ns3::ByteTagIterator::HasNext(), and ns3::ByteTagIterator::Next().

Referenced by ns3::LteRlcTm::DoReceivePdu(), ns3::LteRlcUm::DoReceivePdu(), ns3::LteRlcAm::DoReceivePdu(), ns3::LtePdcp::DoReceivePdu(), ns3::LteRlcSm::DoReceivePdu(), ns3::Ipv4FlowProbe::DropLogger(), ns3::Ipv6FlowProbe::DropLogger(), ns3::Ipv4FlowProbe::ForwardLogger(), ns3::Ipv6FlowProbe::ForwardLogger(), ns3::Ipv4FlowProbe::ForwardUpLogger(), ns3::Ipv6FlowProbe::ForwardUpLogger(), ns3::Ipv4FlowProbe::QueueDropLogger(), ns3::Ipv6FlowProbe::QueueDropLogger(), Receiver::Receive(), CollisionExperiment::Receive(), ns3::DelayJitterEstimation::RecordRx(), and ns3::PyViz::TraceNetDevRxCommon().

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ByteTagIterator ns3::Packet::GetByteTagIterator ( void ) const

Retiurns an iterator over the set of byte tags included in this packet.

Returns: an iterator over the set of byte tags included in this packet.

Definition at line 799 of file packet.cc.

References ns3::ByteTagList::Begin(), GetSize(), and m_byteTagList.

Referenced by PacketTest::DoCheck(), Ipv4FragmentationTest::DoRun(), Ipv6FragmentationTest::DoRun(), FindFirstMatchingByteTag(), ns3::AnimationInterface::GetAnimUidFromPacket(), and PrintByteTags().

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Ptr< NixVector > ns3::Packet::GetNixVector ( void ) const

Get the packet nix-vector.

See the comment on SetNixVector

Returns: the Nix vector

Definition at line 249 of file packet.cc.

References m_nixVector.

Referenced by ns3::Ipv4NixVectorRouting::RouteInput().

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PacketTagIterator ns3::Packet::GetPacketTagIterator ( void ) const

Returns an object which can be used to iterate over the list of packet tags.

Returns: an object which can be used to iterate over the list of packet tags.

Definition at line 880 of file packet.cc.

References ns3::PacketTagList::Head(), and m_packetTagList.

Referenced by PrintPacketTags().

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uint32_t ns3::Packet::GetSerializedSize ( void ) const

Returns number of bytes required for packet serialization.

Returns: number of bytes required for packet serialization

For packet serialization, the total size is checked in order to determine the size of the buffer required for serialization

Todo:: Serialze Tags size

Definition at line 546 of file packet.cc.

References ns3::NixVector::GetSerializedSize(), ns3::PacketMetadata::GetSerializedSize(), ns3::Buffer::GetSerializedSize(), m_buffer, m_metadata, and m_nixVector.

Referenced by LrWpanPacketTestCase::DoRun(), ns3::GrantedTimeWindowMpiInterface::SendPacket(), and ns3::NullMessageMpiInterface::SendPacket().

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uint32_t ns3::Packet::GetSize ( void ) const

inline

Returns the the size in bytes of the packet (including the zero-filled initial payload).

Returns: the size in bytes of the packet

Definition at line 786 of file packet.h.

References ns3::Buffer::GetSize(), and m_buffer.

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uint64_t ns3::Packet::GetUid ( void ) const

Returns the packet's Uid.

A packet is allocated a new uid when it is created empty or with zero-filled payload.

Note: This uid is an internal uid and cannot be counted on to provide an accurate counter of how many "simulated packets" of a particular protocol are in the system. It is not trivial to make this uid into such a counter, because of questions such as what should the uid be when the packet is sent over broadcast media, or when fragmentation occurs. If a user wants to trace actual packet counts, he or she should look at e.g. the IP ID field or transport sequence numbers, or other packet or frame counters at other protocol layers.

Returns: an integer identifier which uniquely identifies this packet.

Definition at line 366 of file packet.cc.

References ns3::PacketMetadata::GetUid(), and m_metadata.

Referenced by ns3::dsr::PassiveBuffer::AllEqual(), ns3::dsdv::RoutingProtocol::DeferredRouteOutput(), ns3::aodv::RoutingProtocol::DeferredRouteOutput(), ns3::ListErrorModel::DoCorrupt(), ns3::Icmpv6L4Protocol::DoDAD(), CoDelQueueBasicEnqueueDequeue::DoRun(), ns3::aodv::RequestQueue::Drop(), ns3::dsdv::PacketQueue::Drop(), ns3::dsdv::RoutingProtocol::Drop(), ns3::dsr::ErrorBuffer::Drop(), ns3::dsr::SendBuffer::Drop(), ns3::dsr::PassiveBuffer::Drop(), ns3::dsr::ErrorBuffer::DropLink(), ns3::dsr::PassiveBuffer::DropLink(), ns3::aodv::RequestQueue::Enqueue(), ns3::dsr::SendBuffer::Enqueue(), ns3::dsdv::PacketQueue::Enqueue(), ns3::dsr::ErrorBuffer::Enqueue(), ns3::dsr::PassiveBuffer::Enqueue(), ns3::BridgeNetDevice::ForwardBroadcast(), ns3::aodv::RoutingProtocol::Forwarding(), ns3::BridgeNetDevice::ForwardUnicast(), ns3::PacketSocket::ForwardUp(), ns3::Icmpv6L4Protocol::HandleNS(), ns3::UdpServer::HandleRead(), ns3::aodv::DuplicatePacketDetection::IsDuplicate(), ns3::dsr::DsrRouting::NotifyDataReceipt(), ns3::dsr::DsrRouting::PacketNewRoute(), ns3::dsr::DsrRouting::PromiscReceive(), ns3::CsmaChannel::PropagationCompleteEvent(), ns3::CsmaNetDevice::Receive(), ns3::dsr::DsrRouting::Receive(), ns3::TapBridge::ReceiveFromBridgedDevice(), ns3::MeshPointDevice::ReceiveFromDevice(), ns3::BridgeNetDevice::ReceiveFromDevice(), ns3::SixLowPanNetDevice::ReceiveFromDevice(), ns3::Node::ReceiveFromDevice(), ns3::aodv::RoutingProtocol::RecvAodv(), ns3::aodv::RoutingProtocol::RouteInput(), ns3::dsdv::RoutingProtocol::RouteInput(), ns3::dsdv::RoutingProtocol::RouteOutput(), RedQueueTestCase::RunRedTest(), ns3::UdpClient::Send(), EpsBearerTagUdpClient::Send(), ns3::PointToPointNetDevice::Send(), ns3::dsr::DsrRouting::Send(), ns3::FdNetDevice::SendFrom(), ns3::CsmaNetDevice::SendFrom(), ns3::dsdv::RoutingProtocol::SendPeriodicUpdate(), ns3::aodv::RoutingProtocol::SendReplyByIntermediateNode(), ns3::dsdv::RoutingProtocol::SendTriggeredUpdate(), ns3::dsr::DsrRouting::SendUnreachError(), ns3::PyViz::TraceDevQueueDrop(), ns3::PyViz::TraceNetDevRxCommon(), ns3::PyViz::TraceNetDevRxWifi(), ns3::PyViz::TraceNetDevTxCommon(), ns3::PyViz::TraceNetDevTxWifi(), ns3::CsmaNetDevice::TransmitAbort(), ns3::CsmaNetDevice::TransmitCompleteEvent(), ns3::CsmaChannel::TransmitEnd(), ns3::PointToPointRemoteChannel::TransmitStart(), ns3::PointToPointChannel::TransmitStart(), ns3::CsmaChannel::TransmitStart(), ns3::PointToPointNetDevice::TransmitStart(), and ns3::CsmaNetDevice::TransmitStart().

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Packet & ns3::Packet::operator= ( const Packet & o )

Basic assignment.

Parameters

o	object to copy

Returns: the copied object

Definition at line 157 of file packet.cc.

References ns3::NixVector::Copy(), m_buffer, m_byteTagList, m_metadata, m_nixVector, and m_packetTagList.

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uint32_t ns3::Packet::PeekHeader ( Header & header ) const

Deserialize but does not remove the header from the internal buffer.

s This method invokes Header::Deserialize.

Parameters

header a reference to the header to read from the internal buffer.

Returns: the number of bytes read from the packet.

Definition at line 276 of file packet.cc.

References ns3::Buffer::Begin(), ns3::Header::Deserialize(), ns3::ObjectBase::GetInstanceTypeId(), ns3::TypeId::GetName(), m_buffer, and NS_LOG_FUNCTION.

Referenced by ns3::MacLow::AggregateToAmpdu(), ns3::UanPhyCalcSinrDual::CalcSinrDb(), ns3::SixLowPanNetDevice::CompressLowPanHc1(), ns3::SixLowPanNetDevice::CompressLowPanIphc(), ns3::SixLowPanNetDevice::CompressLowPanNhc(), ns3::SixLowPanNetDevice::CompressLowPanUdpNhc(), ns3::LteUeRrcProtocolReal::DoReceivePdcpPdu(), ns3::LteEnbRrcProtocolReal::DoReceivePdcpPdu(), ns3::LteUeRrcProtocolReal::DoReceivePdcpSdu(), ns3::LteEnbRrcProtocolReal::DoReceivePdcpSdu(), ns3::LteRlcUm::DoReceivePdu(), ns3::LteRlcAm::DoReceivePdu(), ns3::TapBridge::Filter(), ns3::Ipv4RawSocketImpl::ForwardUp(), ns3::Ipv6RawSocketImpl::ForwardUp(), ns3::MacLow::GetTid(), ns3::EdcaTxopN::GotAck(), ns3::Icmpv4L4Protocol::HandleDestUnreach(), ns3::Icmpv4L4Protocol::HandleTimeExceeded(), Ns3TcpStateTestCase::Ipv4L3Tx(), ns3::UanMacRc::IsPhy1Ok(), ns3::EdcaTxopN::MissedBlockAck(), ns3::EdcaTxopN::NeedBarRetransmission(), ns3::dsr::DsrRouting::NotifyDataReceipt(), ns3::TcpL4Protocol::PacketReceived(), ns3::LrWpanMac::PdDataConfirm(), ns3::LrWpanMac::PdDataIndication(), NodeStatistics::PhyCallback(), OcbWifiMacTestCase::PhyTxTrace(), WaveNetDeviceExample::Receive(), ns3::MeshWifiInterfaceMac::Receive(), ns3::OcbWifiMac::Receive(), ns3::UdpL4Protocol::Receive(), ns3::UanMacRcGw::ReceivePacket(), ns3::UanMacRcGw::SendPacket(), ns3::UanMacRc::SendPacket(), SinkRx(), ns3::PyViz::TraceNetDevPromiscRxCsma(), ns3::PyViz::TraceNetDevRxCsma(), ns3::PyViz::TraceNetDevRxWifi(), ns3::PyViz::TraceNetDevTxCsma(), ns3::PyViz::TraceNetDevTxWifi(), ns3::dot11s::PeerManagementProtocolMac::UpdateOutcomingFrame(), and ns3::AnimationInterface::WifiPhyRxBeginTrace().

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bool ns3::Packet::PeekPacketTag ( Tag & tag ) const

Search a matching tag and call Tag::Deserialize if it is found.

Parameters

tag	the tag to search in this packet

Returns: true if the requested tag is found, false otherwise.

Definition at line 844 of file packet.cc.

References m_packetTagList, and ns3::PacketTagList::Peek().

Referenced by ns3::LrWpanPhy::CheckInterference(), Ipv4FragmentationTest::DoRun(), Ipv6FragmentationTest::DoRun(), PacketTest::DoRun(), ns3::LrWpanPhy::EndRx(), Ipv4DynamicGlobalRoutingTestCase::HandleRead(), PrintReceivedPacket(), PrintReceivedRoutingPacket(), ns3::QosUtilsGetTidForPacket(), ns3::flame::FlameProtocolMac::Receive(), ns3::dot11s::HwmpProtocolMac::ReceiveData(), ns3::BsmApplication::ReceiveWavePacket(), ns3::UdpSocketImpl::RecvFrom(), ns3::NscTcpSocketImpl::RecvFrom(), ns3::PacketSocket::RecvFrom(), ns3::dot11s::HwmpProtocol::RequestRoute(), ns3::flame::FlameProtocol::RequestRoute(), ns3::aodv::RoutingProtocol::RouteInput(), ns3::dsdv::RoutingProtocol::RouteInput(), ns3::aodv::RoutingProtocol::RouteOutput(), ns3::dsdv::RoutingProtocol::RouteOutput(), ns3::YansWifiPhy::StartReceivePreambleAndHeader(), and ns3::MacLow::StartTransmission().

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uint32_t ns3::Packet::PeekTrailer ( Trailer & trailer )

Deserialize but does not remove a trailer from the internal buffer.

This method invokes the Trailer::Deserialize method.

Parameters

trailer a reference to the trailer to read from the internal buffer.

Returns: the number of bytes read from the end of the packet.

Definition at line 303 of file packet.cc.

References ns3::Trailer::Deserialize(), ns3::Buffer::End(), ns3::ObjectBase::GetInstanceTypeId(), ns3::TypeId::GetName(), m_buffer, and NS_LOG_FUNCTION.

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void ns3::Packet::Print ( std::ostream & os ) const

Print the packet contents.

Parameters

os	output stream in which the data should be printed.

Iterate over the headers and trailers present in this packet, from the first header to the last trailer and invoke, for each of them, the user-provided method Header::DoPrint or Trailer::DoPrint methods.

Definition at line 410 of file packet.cc.

Referenced by ns3::Ipv4L3Protocol::DoFragmentation(), LrWpanPacketTestCase::DoRun(), ns3::Ipv6ExtensionFragment::GetFragments(), ns3::AnimationInterface::GetPacketMetadata(), ns3::operator<<(), LrWpanCcaTestCase::PhyRxBegin(), LrWpanCcaTestCase::PhyRxDrop(), LrWpanCcaTestCase::PhyRxEnd(), LrWpanCcaTestCase::PhyTxBegin(), LrWpanCcaTestCase::PhyTxEnd(), and ToString().

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void ns3::Packet::PrintByteTags ( std::ostream & os ) const

Iterate over the byte tags present in this packet, and invoke the Print method of each tag stored in the packet.

Parameters

os	output stream in which the data should be printed.

Definition at line 372 of file packet.cc.

References GetByteTagIterator(), ns3::TypeId::GetConstructor(), ns3::ByteTagIterator::Item::GetEnd(), ns3::TypeId::GetName(), ns3::ByteTagIterator::Item::GetStart(), ns3::ByteTagIterator::Item::GetTag(), ns3::ByteTagIterator::Item::GetTypeId(), ns3::ByteTagIterator::HasNext(), ns3::Callback< R, T1, T2, T3, T4, T5, T6, T7, T8, T9 >::IsNull(), ns3::ByteTagIterator::Next(), NS_ASSERT, and ns3::Tag::Print().

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void ns3::Packet::PrintPacketTags ( std::ostream & os ) const

Print the list of packet tags.

Parameters

os	the stream on which to print the tags.

See also: Packet::AddPacketTag, Packet::RemovePacketTag, Packet::PeekPacketTag, Packet::RemoveAllPacketTags

Definition at line 857 of file packet.cc.

References ns3::TypeId::GetConstructor(), GetPacketTagIterator(), ns3::PacketTagIterator::Item::GetTag(), ns3::PacketTagIterator::Item::GetTypeId(), ns3::TypeId::HasConstructor(), ns3::PacketTagIterator::HasNext(), ns3::PacketTagIterator::Next(), NS_ASSERT, and ns3::Tag::Print().

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void ns3::Packet::RemoveAllByteTags ( void )

Remove all byte tags stored in this packet.

Definition at line 347 of file packet.cc.

References m_byteTagList, NS_LOG_FUNCTION, and ns3::ByteTagList::RemoveAll().

Referenced by Ipv6ForwardingTest::DoRun(), Ipv6RipngTest::DoRun(), Ipv6RawSocketImplTest::DoRun(), Ipv4RawSocketImplTest::DoRun(), Ipv4ForwardingTest::DoRun(), SixlowpanHc1ImplTest::DoRun(), SixlowpanIphcImplTest::DoRun(), Ipv4HeaderTest::DoRun(), UdpSocketImplTest::DoRun(), Udp6SocketImplTest::DoRun(), dstSocketRecv(), ns3::aodv::LoopbackTestCase::EchoData(), ns3::UdpEchoServer::HandleRead(), FlameRegressionTest::HandleReadServer(), HwmpProactiveRegressionTest::HandleReadServer(), SixlowpanFragmentationTest::HandleReadServer(), HwmpSimplestRegressionTest::HandleReadServer(), HwmpReactiveRegressionTest::HandleReadServer(), HwmpDoRfRegressionTest::HandleReadServer(), and srcSocketRecv().

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void ns3::Packet::RemoveAllPacketTags ( void )

Remove all packet tags.

Definition at line 850 of file packet.cc.

References m_packetTagList, NS_LOG_FUNCTION, and ns3::PacketTagList::RemoveAll().

Referenced by PacketTest::DoRun(), dstSocketRecv(), ns3::aodv::LoopbackTestCase::EchoData(), ns3::UdpEchoServer::HandleRead(), FlameRegressionTest::HandleReadServer(), HwmpProactiveRegressionTest::HandleReadServer(), SixlowpanFragmentationTest::HandleReadServer(), HwmpSimplestRegressionTest::HandleReadServer(), HwmpReactiveRegressionTest::HandleReadServer(), HwmpDoRfRegressionTest::HandleReadServer(), and srcSocketRecv().

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void ns3::Packet::RemoveAtEnd ( uint32_t size )

Remove size bytes from the end of the current packet.

It is safe to remove more bytes than are present in the packet.

Parameters

size	number of bytes from remove

Definition at line 331 of file packet.cc.

References m_buffer, m_metadata, NS_LOG_FUNCTION, ns3::PacketMetadata::RemoveAtEnd(), and ns3::Buffer::RemoveAtEnd().

Referenced by PacketTest::DoRun(), ns3::Ipv6ExtensionFragment::Process(), and ns3::CsmaNetDevice::Receive().

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void ns3::Packet::RemoveAtStart ( uint32_t size )

Remove size bytes from the start of the current packet.

It is safe to remove more bytes than are present in the packet.

Parameters

size	number of bytes from remove

Definition at line 338 of file packet.cc.

References ns3::ByteTagList::Adjust(), m_buffer, m_byteTagList, m_metadata, NS_LOG_FUNCTION, ns3::PacketMetadata::RemoveAtStart(), and ns3::Buffer::RemoveAtStart().

Referenced by ns3::dsr::DsrRouting::AddAckReqHeader(), ns3::dsr::DsrRouting::CancelPacketTimerNextHop(), ns3::dsr::DsrRouting::CheckSendBuffer(), ns3::MsduAggregator::Deaggregate(), ns3::MpduAggregator::Deaggregate(), ns3::LteRlcUm::DoNotifyTxOpportunity(), ns3::LteRlcAm::DoNotifyTxOpportunity(), PacketTest::DoRun(), ns3::TapBridge::Filter(), ns3::Ipv6L3Protocol::LocalDeliver(), ns3::Ipv6OptionPad1::Process(), ns3::Ipv6OptionPadn::Process(), ns3::Ipv6ExtensionHopByHop::Process(), ns3::Ipv6OptionJumbogram::Process(), ns3::Ipv6ExtensionDestination::Process(), ns3::Ipv6OptionRouterAlert::Process(), ns3::Ipv6ExtensionFragment::Process(), ns3::Ipv6ExtensionRouting::Process(), ns3::Ipv6ExtensionLooseRouting::Process(), ns3::Ipv6Extension::ProcessOptions(), ns3::dsr::DsrRouting::PromiscReceive(), ns3::LteRlcUm::ReassembleAndDeliver(), ns3::LteRlcAm::ReassembleAndDeliver(), ns3::dsr::DsrRouting::Receive(), ns3::Ipv4RawSocketImpl::RecvFrom(), ns3::Ipv6RawSocketImpl::RecvFrom(), ns3::dsr::DsrRouting::SalvagePacket(), and ns3::dsr::DsrRouting::SendPacketFromBuffer().

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uint32_t ns3::Packet::RemoveHeader ( Header & header )

Deserialize and remove the header from the internal buffer.

This method invokes Header::Deserialize.

Parameters

header a reference to the header to remove from the internal buffer.

Returns: the number of bytes removed from the packet.

Definition at line 266 of file packet.cc.

References ns3::ByteTagList::Adjust(), ns3::Buffer::Begin(), ns3::Header::Deserialize(), ns3::ObjectBase::GetInstanceTypeId(), ns3::TypeId::GetName(), m_buffer, m_byteTagList, m_metadata, NS_LOG_FUNCTION, ns3::Buffer::RemoveAtStart(), and ns3::PacketMetadata::RemoveHeader().

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bool ns3::Packet::RemovePacketTag ( Tag & tag )

Remove a packet tag.

Parameters

tag	the packet tag type to remove from this packet. The tag parameter is set to the value of the tag found.

Returns: true if the requested tag is found, false otherwise.

Definition at line 829 of file packet.cc.

References ns3::ObjectBase::GetInstanceTypeId(), ns3::TypeId::GetName(), ns3::Tag::GetSerializedSize(), m_packetTagList, NS_LOG_FUNCTION, and ns3::PacketTagList::Remove().

Referenced by benchD(), ns3::MacLow::DeaggregateAmpduAndReceive(), ns3::LteRlcUm::DoNotifyTxOpportunity(), ns3::LteRlcAm::DoNotifyTxOpportunity(), ns3::LteUeMac::DoReceivePhyPdu(), ns3::LteEnbMac::DoReceivePhyPdu(), PacketTest::DoRun(), ns3::UdpSocketImpl::DoSendTo(), ns3::MeshWifiInterfaceMac::ForwardDown(), ns3::Ipv4RawSocketImpl::ForwardUp(), ns3::Ipv6RawSocketImpl::ForwardUp(), ns3::UdpSocketImpl::ForwardUp(), ns3::UdpSocketImpl::ForwardUp6(), ns3::Radvd::HandleRead(), ns3::RipNg::HandleRequests(), Tunnel::N0SocketRecv(), Tunnel::N1SocketRecv(), Tunnel::N3SocketRecv(), ns3::CoDelQueue::OkToDrop(), ns3::LrWpanPhy::PdDataRequest(), ns3::dot11s::HwmpProtocol::ProactivePathResolved(), ns3::dot11s::HwmpProtocol::ReactivePathResolved(), ns3::RipNg::Receive(), ns3::MacLow::ReceiveOk(), ReceivePacket(), Ipv6RipngSplitHorizonStrategyTest::ReceivePktProbe(), ns3::EpcEnbApplication::RecvFromLteSocket(), ns3::EpcSgwPgwApplication::RecvFromS1uSocket(), ns3::EpcEnbApplication::RecvFromS1uSocket(), ns3::dot11s::HwmpProtocol::RemoveRoutingStuff(), ns3::flame::FlameProtocol::RemoveRoutingStuff(), ns3::dot11s::HwmpProtocol::RequestRoute(), ns3::flame::FlameProtocol::RequestRoute(), Ipv6PacketInfoTagTest::RxCb(), Ipv4PacketInfoTagTest::RxCb(), ns3::Ipv6L3Protocol::Send(), ns3::Ipv4L3Protocol::Send(), ns3::LteEnbRrc::SendData(), ns3::SimpleNetDevice::SendFrom(), ns3::dsdv::RoutingProtocol::SendPacketFromQueue(), ns3::aodv::RoutingProtocol::SendPacketFromQueue(), ns3::RipNg::SendRouteRequest(), ns3::SimpleNetDevice::TransmitComplete(), ns3::flame::FlameProtocolMac::UpdateOutcomingFrame(), and ns3::dot11s::HwmpProtocolMac::UpdateOutcomingFrame().

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uint32_t ns3::Packet::RemoveTrailer ( Trailer & trailer )

Remove a deserialized trailer from the internal buffer.

This method invokes the Deserialize method.

Parameters

trailer a reference to the trailer to remove from the internal buffer.

Returns: the number of bytes removed from the end of the packet.

Definition at line 294 of file packet.cc.

References ns3::Trailer::Deserialize(), ns3::Buffer::End(), ns3::ObjectBase::GetInstanceTypeId(), ns3::TypeId::GetName(), m_buffer, m_metadata, NS_LOG_FUNCTION, ns3::Buffer::RemoveAtEnd(), and ns3::PacketMetadata::RemoveTrailer().

Referenced by LrWpanPacketTestCase::DoRun(), PacketTest::DoRun(), ns3::LrWpanMac::PdDataIndication(), ns3::CsmaNetDevice::Receive(), ns3::MacLow::ReceiveOk(), and ns3::MacLow::StoreMpduIfNeeded().

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bool ns3::Packet::ReplacePacketTag ( Tag & tag )

Replace the value of a packet tag.

Parameters

tag	the packet tag type to replace. To get the old value of the tag, use PeekPacketTag first.

Returns: true if the requested tag is found, false otherwise. If the tag isn't found, Add is performed instead (so the packet is guaranteed to have the new tag value either way).

Definition at line 836 of file packet.cc.

References ns3::ObjectBase::GetInstanceTypeId(), ns3::TypeId::GetName(), ns3::Tag::GetSerializedSize(), m_packetTagList, NS_LOG_FUNCTION, and ns3::PacketTagList::Replace().

Referenced by ns3::LrWpanPhy::CheckInterference().

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uint32_t ns3::Packet::Serialize	(	uint8_t *	buffer,
		uint32_t	maxSize
	)		const

Serialize a packet, tags, and metadata into a byte buffer.

Parameters

buffer	a raw byte buffer to which the packet will be serialized
maxSize	the max size of the buffer for bounds checking

Returns: one if all data were serialized, zero if buffer size was too small.

Todo:: Serialize Tags

Definition at line 589 of file packet.cc.

References ns3::NixVector::GetSerializedSize(), ns3::PacketMetadata::GetSerializedSize(), ns3::Buffer::GetSerializedSize(), m_buffer, m_metadata, m_nixVector, ns3::NixVector::Serialize(), ns3::PacketMetadata::Serialize(), and ns3::Buffer::Serialize().

Referenced by LrWpanPacketTestCase::DoRun(), ns3::GrantedTimeWindowMpiInterface::SendPacket(), and ns3::NullMessageMpiInterface::SendPacket().

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void ns3::Packet::SetNixVector ( Ptr< NixVector > nixVector )

Set the packet nix-vector.

Note: This function supports a temporary solution to a specific problem in this generic class, i.e. how to associate something specific like nix-vector with a packet. This design methodology should not be followed, and is only here as an impetus to fix this general issue.

Parameters

nixVector the nix vector

Definition at line 243 of file packet.cc.

References m_nixVector.

Referenced by ns3::Ipv4NixVectorRouting::RouteOutput().

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std::string ns3::Packet::ToString ( void ) const

Return a string representation of the packet.

An empty string is returned if you haven't called EnablePrinting ()

Returns: String representation

Definition at line 402 of file packet.cc.

References Print().

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Member Data Documentation

Buffer ns3::Packet::m_buffer

private

the packet buffer (it's actual contents)

Definition at line 716 of file packet.h.

Referenced by AddAtEnd(), AddHeader(), AddPaddingAtEnd(), AddTrailer(), BeginItem(), CopyData(), CreateFragment(), Deserialize(), GetSerializedSize(), GetSize(), operator=(), Packet(), PeekHeader(), PeekTrailer(), Print(), RemoveAtEnd(), RemoveAtStart(), RemoveHeader(), RemoveTrailer(), and Serialize().

ByteTagList ns3::Packet::m_byteTagList

private

the ByteTag list

Definition at line 717 of file packet.h.

Referenced by AddAtEnd(), AddByteTag(), AddHeader(), AddPaddingAtEnd(), AddTrailer(), CreateFragment(), GetByteTagIterator(), operator=(), RemoveAllByteTags(), RemoveAtStart(), and RemoveHeader().

uint32_t ns3::Packet::m_globalUid = 0

staticprivate

Global counter of packets Uid.

Definition at line 724 of file packet.h.

Referenced by Packet().

PacketMetadata ns3::Packet::m_metadata

private

the packet's metadata

Definition at line 719 of file packet.h.

Referenced by AddAtEnd(), AddHeader(), AddPaddingAtEnd(), AddTrailer(), BeginItem(), CreateFragment(), Deserialize(), GetSerializedSize(), GetUid(), operator=(), Print(), RemoveAtEnd(), RemoveAtStart(), RemoveHeader(), RemoveTrailer(), and Serialize().

Ptr<NixVector> ns3::Packet::m_nixVector

private

the packet's Nix vector

Definition at line 722 of file packet.h.

Referenced by Deserialize(), GetNixVector(), GetSerializedSize(), operator=(), Packet(), Serialize(), and SetNixVector().

PacketTagList ns3::Packet::m_packetTagList

private

the packet's Tag list

Definition at line 718 of file packet.h.

Referenced by AddPacketTag(), CreateFragment(), GetPacketTagIterator(), operator=(), PeekPacketTag(), RemoveAllPacketTags(), RemovePacketTag(), and ReplacePacketTag().

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

src/network/model/packet.h
src/network/model/packet.cc

Public Types

Public Member Functions

Static Public Member Functions

Private Member Functions

Private Attributes

Static Private Attributes

Detailed Description

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation