ebpfless

Documentation

Overview

Package ebpfless contains supporting code for the ebpfless tracer

Package ebpfless contains supporting code for the ebpfless tracer

Index

• func TCPPayloadLen(family network.ConnectionFamily, ip4 *layers.IPv4, ip6 *layers.IPv6, ...) (uint16, error)
• func UDPPayloadLen(udp *layers.UDP) (uint16, error)
• func WriteMapWithSizeLimit[Key comparable, Val any](m map[Key]Val, key Key, val Val, sizeLimit int) bool
• type BoundPorts
  • func NewBoundPorts(cfg *config.Config) *BoundPorts
  • func (b *BoundPorts) Find(proto network.ConnectionType, port uint16) bool
  • func (b *BoundPorts) Start() error
  • func (b *BoundPorts) Stop()

Functions

func TCPPayloadLen

func TCPPayloadLen(family network.ConnectionFamily, ip4 *layers.IPv4, ip6 *layers.IPv6, tcp *layers.TCP) (uint16, error)

TCPPayloadLen returns the TCP payload length from a layers.TCP object

func UDPPayloadLen

func UDPPayloadLen(udp *layers.UDP) (uint16, error)

UDPPayloadLen returns the UDP payload length from a layers.UDP object

func WriteMapWithSizeLimit

func WriteMapWithSizeLimit[Key comparable, Val any](m map[Key]Val, key Key, val Val, sizeLimit int) bool

WriteMapWithSizeLimit updates a map via m[key] = val. However, if the map would overflow sizeLimit, it returns false instead.

Types

type BoundPorts

type BoundPorts struct {
	// contains filtered or unexported fields
}

BoundPorts is a collection of bound ports on the host that is periodically updated from procfs

func NewBoundPorts

func NewBoundPorts(cfg *config.Config) *BoundPorts

NewBoundPorts returns a new BoundPorts instance

func (*BoundPorts) Find

func (b *BoundPorts) Find(proto network.ConnectionType, port uint16) bool

Find returns `true` if the given `(proto, port)` exists in the BoundPorts collection

func (*BoundPorts) Start

func (b *BoundPorts) Start() error

Start starts a BoundPorts instance

func (*BoundPorts) Stop

func (b *BoundPorts) Stop()

Stop stops a BoundPorts instance