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.