#include <ebpfPipeline.h>

Inheritance diagram for P4::EBPF::EBPFEgressPipeline:

Public Member Functions
	EBPFEgressPipeline (cstring name, const EbpfOptions &options, P4::ReferenceMap refMap, P4::TypeMap typeMap)

	DECLARE_TYPEINFO (EBPFEgressPipeline, EBPFPipeline)

void	emit (CodeBuilder *builder) override

virtual void	emitCheckPacketMarkMetadata (CodeBuilder *builder)=0

void	emitCPUMAPLookup (CodeBuilder *builder) override

void	emitPSAControlInputMetadata (CodeBuilder *builder) override

void	emitPSAControlOutputMetadata (CodeBuilder *builder) override

Public Member Functions inherited from P4::EBPF::EBPFPipeline
	EBPFPipeline (cstring name, const EbpfOptions &options, P4::ReferenceMap refMap, P4::TypeMap typeMap)

	DECLARE_TYPEINFO (EBPFPipeline, EBPFProgram)

virtual cstring	dropReturnCode ()

void	emitCPUMAPHeadersInitializers (CodeBuilder *builder)
	Generates a pointer to struct hdr_md. The pointer is used to access data from per-CPU map.

virtual void	emitCPUMAPInitializers (CodeBuilder *builder)

virtual void	emitGlobalMetadataInitializer (CodeBuilder *builder)

void	emitHeaderInstances (CodeBuilder *builder) override

void	emitHeadersFromCPUMAP (CodeBuilder *builder)

void	emitInputPortMapping (CodeBuilder *builder)

void	emitLocalHeaderInstancesAsPointers (CodeBuilder *builder)
	Generates a pointer to struct Headers_t and puts it on the BPF program's stack.

void	emitLocalVariables (CodeBuilder *builder) override
	Generates a set of helper variables that are used during packet processing.

void	emitMetadataFromCPUMAP (CodeBuilder *builder)

virtual void	emitPacketLength (CodeBuilder *builder)

virtual void	emitTimestamp (CodeBuilder *builder)

virtual void	emitTrafficManager (CodeBuilder *builder)=0

void	emitUserMetadataInstance (CodeBuilder *builder)

virtual cstring	forwardReturnCode ()

bool	hasAnyMeter () const

bool	isEmpty () const

bool	shouldEmitTimestamp () const

Public Member Functions inherited from P4::EBPF::EBPFProgram
	EBPFProgram (const EbpfOptions &options, const IR::P4Program program, P4::ReferenceMap refMap, P4::TypeMap typeMap, const IR::ToplevelBlock toplevel)
	return 'true' on success

virtual bool	build ()

	DECLARE_TYPEINFO (EBPFProgram, EBPFObject)

virtual void	emitC (CodeBuilder *builder, const std::filesystem::path &headerFile)

virtual void	emitCommonPreamble (CodeBuilder *builder)

virtual void	emitGeneratedComment (CodeBuilder *builder)

virtual void	emitH (CodeBuilder *builder, const std::filesystem::path &headerFile)

Public Member Functions inherited from P4::EBPF::EBPFObject
	DECLARE_TYPEINFO (EBPFObject)

Public Member Functions inherited from P4::ICastable
template<typename T >
T &	as ()
	Tries to convert the class to type T. A BUG occurs if the cast fails.

template<typename T >
const T &	as () const
	Tries to convert the class to type T. A BUG occurs if the cast fails.

template<typename T >
T *	checkedTo ()
	Performs a checked cast. A BUG occurs if the cast fails.

template<typename T >
const T *	checkedTo () const
	Performs a checked cast. A BUG occurs if the cast fails.

Public Member Functions inherited from P4::RTTI::Base
template<typename T >
bool	is () const noexcept

virtual bool	isA (TypeId typeId) const noexcept=0

template<typename T >
const T *	to () const noexcept
	Same as `to`, but returns const pointer to T.

template<typename T >
T *	to () noexcept

virtual TypeId	typeId () const noexcept=0

Additional Inherited Members
Static Public Member Functions inherited from P4::EBPF::EBPFObject
static cstring	externalName (const IR::IDeclaration *declaration)

static cstring	getSpecializedTypeName (const IR::Declaration_Instance *di)

static cstring	getTypeName (const IR::Declaration_Instance *di)

Public Attributes inherited from P4::EBPF::EBPFPipeline
cstring	compilerGlobalMetadata
	A name of an internal variable storing global metadata.

cstring	contextVar
	Variable name storing pointer to eBPF packet descriptor (e.g., __sk_buff).

EBPFControlPSA *	control

EBPFDeparserPSA *	deparser

cstring	ifindexVar
	Variable storing ingress interface index.

cstring	inputPortVar
	A variable to store ifindex after mapping (e.g. due to recirculation).

cstring	name
	A custom name of eBPF program.

cstring	oneKey
	A variable name storing "1" value. Used to access BPF array map index.

unsigned	packetMark
	A unique mark used to differentiate packets processed by P4/eBPF from others.

cstring	packetPathVar
	Variables storing global metadata (packet_path & instance).

cstring	pktInstanceVar

cstring	priorityVar
	Variable storing skb->priority value (TC only).

cstring	sectionName
	eBPF section name, which should a concatenation of `classifier/` + a custom name.

cstring	timestampVar
	Variable name storing current timestamp retrieved from bpf_ktime_get_ns().

Public Attributes inherited from P4::EBPF::EBPFProgram
cstring	arrayIndexType = "u32"_cs
	TODO: this should be a compiler option probably.

cstring	byteVar

EBPFControl *	control

EBPFDeparser *	deparser
	Deparser may be NULL if not supported (e.g. ebpfFilter package).

cstring	endLabel

cstring	errorEnum

cstring	errorVar

cstring	functionName

cstring	headerStartVar

cstring	lengthVar

cstring	license = "GPL"_cs

EBPFModel &	model

cstring	offsetVar

const EbpfOptions &	options

cstring	packetEndVar

cstring	packetStartVar

EBPFParser *	parser

const IR::P4Program *	program

const Target *	progTarget

P4::ReferenceMap *	refMap

const IR::ToplevelBlock *	toplevel

P4::TypeMap *	typeMap

cstring	zeroKey

Protected Member Functions inherited from P4::EBPF::EBPFProgram
virtual void	emitPipeline (CodeBuilder *builder)

virtual void	emitPreamble (CodeBuilder *builder)

virtual void	emitTypes (CodeBuilder *builder)

virtual bool	isLibraryMethod (cstring methodName)

Protected Member Functions inherited from P4::RTTI::Base
virtual const void *	toImpl (TypeId typeId) const noexcept=0

Detailed Description

EBPFEgressPipeline represents a hook-independent EBPF-based egress pipeline. It includes common definitions for TC and XDP.

Member Function Documentation

◆ emit()

void P4::EBPF::EBPFEgressPipeline::emit ( CodeBuilder * builder )

overridevirtual

Implements P4::EBPF::EBPFPipeline.

◆ emitCPUMAPLookup()

void P4::EBPF::EBPFEgressPipeline::emitCPUMAPLookup ( CodeBuilder * builder )

overridevirtual

Reimplemented from P4::EBPF::EBPFPipeline.

◆ emitPSAControlInputMetadata()

void P4::EBPF::EBPFEgressPipeline::emitPSAControlInputMetadata ( CodeBuilder * builder )

overridevirtual

Implements P4::EBPF::EBPFPipeline.

◆ emitPSAControlOutputMetadata()

void P4::EBPF::EBPFEgressPipeline::emitPSAControlOutputMetadata ( CodeBuilder * builder )

overridevirtual

Implements P4::EBPF::EBPFPipeline.

Public Member Functions

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ emit()

◆ emitCPUMAPLookup()

◆ emitPSAControlInputMetadata()

◆ emitPSAControlOutputMetadata()