Inheritance diagram for P4::EBPF::Target:

[legend]

Public Member Functions
virtual cstring	abortReturnCode () const =0

virtual cstring	dataEnd (cstring base) const =0

virtual cstring	dataLength (cstring base) const =0

virtual cstring	dataOffset (cstring base) const =0

virtual cstring	dropReturnCode () const =0

virtual void	emitCodeSection (Util::SourceCodeBuilder *builder, cstring sectionName) const =0

virtual void	emitIncludes (Util::SourceCodeBuilder *builder) const =0

virtual void	emitLicense (Util::SourceCodeBuilder *builder, cstring license) const =0

virtual void	emitMain (Util::SourceCodeBuilder *builder, cstring functionName, cstring argName) const =0

virtual void	emitMapInMapDecl (Util::SourceCodeBuilder *builder, cstring innerName, TableKind innerTableKind, cstring innerKeyType, cstring innerValueType, unsigned innerSize, cstring outerName, TableKind outerTableKind, cstring outerKeyType, unsigned outerSize) const

virtual void	emitPreamble (Util::SourceCodeBuilder *builder) const

virtual void	emitResizeBuffer (Util::SourceCodeBuilder *builder, cstring buffer, cstring offsetVar) const =0

virtual void	emitTableDecl (Util::SourceCodeBuilder *builder, cstring tblName, TableKind tableKind, cstring keyType, cstring valueType, unsigned size) const =0

virtual void	emitTableDeclSpinlock (Util::SourceCodeBuilder *builder, cstring tblName, TableKind tableKind, cstring keyType, cstring valueType, unsigned size) const

virtual void	emitTableLookup (Util::SourceCodeBuilder *builder, cstring tblName, cstring key, cstring value) const =0

virtual void	emitTableUpdate (Util::SourceCodeBuilder *builder, cstring tblName, cstring key, cstring value) const =0

virtual void	emitTraceMessage (Util::SourceCodeBuilder builder, const char format) const

virtual void	emitTraceMessage (Util::SourceCodeBuilder builder, const char format, int argc,...) const

virtual void	emitUserTableUpdate (Util::SourceCodeBuilder *builder, cstring tblName, cstring key, cstring value) const =0

virtual cstring	forwardReturnCode () const =0

virtual cstring	packetDescriptorType () const =0

virtual cstring	sysMapPath () const =0

Public Attributes
const cstring	name

Protected Member Functions
	Target (cstring name)

Member Function Documentation

◆ emitMapInMapDecl()

virtual void P4::EBPF::Target::emitMapInMapDecl	(	Util::SourceCodeBuilder *	builder,
		cstring	innerName,
		TableKind	innerTableKind,
		cstring	innerKeyType,
		cstring	innerValueType,
		unsigned	innerSize,
		cstring	outerName,
		TableKind	outerTableKind,
		cstring	outerKeyType,
		unsigned	outerSize ) const

inlinevirtual

map-in-map requires declaration of both inner and outer map, thus we define them together in a single method.

Reimplemented in P4::EBPF::KernelSamplesTarget.

◆ emitTraceMessage()

void Target::emitTraceMessage	(	Util::SourceCodeBuilder *	builder,
		const char *	format,
		int	argc,
			... ) const

virtual

Emit trace message which will be printed during packet processing (if enabled).

Parameters

builder	Actual source code builder.
format	Format string, interpreted by `printk`-like function. For more information see documentation for `bpf_trace_printk`.
argc	Number of variadic arguments. Up to 3 arguments can be passed due to limitation of eBPF.
...	Arguments to the format string, they must be C string and valid code in C.

To print variable value: emitTraceMessage(builder, "var=%u", 1, "var_name") To print expression value: emitTraceMessage(builder, "diff=%d", 1, "var1 - var2") To print just message: emitTraceMessage(builder, "Here")

Reimplemented in P4::EBPF::KernelSamplesTarget.

Public Member Functions

Public Attributes

Protected Member Functions

Member Function Documentation

◆ emitMapInMapDecl()

◆ emitTraceMessage()