bpf

Documentation

Overview

Package bpf provides access to compiled eBPF ELF objects.

Index

• Constants
• type Kind
  • func (kind Kind) Find(name string) (path string, e error)

Constants

const EnvBpfPath = "NDNDPDK_BPF_PATH"

EnvBpfPath declares an environment variable to explicitly specify a directory containing compiled eBPF ELF objects.

Types

type Kind

type Kind string

Kind indicates the kind of compiled eBPF ELF object.

const (
	Strategy Kind = "strategy"
	XDP      Kind = "xdp"
)

Kind definitions.

func (Kind) Find

func (kind Kind) Find(name string) (path string, e error)

Find determines the filesystem path of a compiled eBPF ELF object. It first constructs a filename from the kind and short name. It then searches the file in the following locations:

1. The path specified in NDNDPDK_BPF_PATH environ.
2. ../lib/bpf relative to the executable. From /usr/local/bin/ndndpdk-svc, this step looks for eBPF objects in /usr/local/lib/bpf.
3. build/lib/bpf in the source tree. This is used in unit tests, and is skipped if the executable is installed under /usr.