BPF-HELPERS - Linux
Overview
BPF-HELPERS is a command-line tool that provides a comprehensive list of BPF helper functions available in the Linux kernel. It helps developers understand the purpose and syntax of each helper, enabling them to effectively use BPF in their code.
Syntax
bpf-helpers [options]
Options/Flags
-a, --all
: List all BPF helper functions, including deprecated ones.-h, --help
: Display usage information and exit.-v, --version
: Display the version of bpf-helpers and exit.
Examples
Display All Helper Functions:
bpf-helpers -a
Search for a Specific Helper:
bpf-helpers | grep "sk_redirect"
Display Help for a Helper:
bpf-helpers --help sk_redirect
Common Issues
- Permission Denied: Ensure you have root privileges to run bpf-helpers.
Integration
BPF-HELPERS is essential when developing BPF programs. It can be used in combination with tools like bcc-perf
for performance analysis and tc
for traffic control.
Related Commands
bcc-perf
: Profile and trace BPF programs.tc
: Configure network traffic control.bpftool
: Manage BPF programs and objects.