Introduction

This repository provides a collection of practical examples for utilizing the Netlink protocol on FreeBSD.

The goal of this project is to offer a clear reference for developers looking to understand the FreeBSD-specific Netlink implementation and transition Linux-based Netlink knowledge to the FreeBSD environment.

Example 01

How to register a new generic netlink family on FreeBSD.

Build the FreeBSD kernel module

$ cd example-01/kernel

$ make

Load the module

$ cd example-01/kernel

$ doas make load

Build and run the client

$ cd example-01/user

$ make

$ ./nl_echo_client

Unload the module

$ cd example-01/kernel

$ doas make unload

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Example 02

How to register a command, with no attributes (parameters), in the generic netlink family and call it from the userspace.

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Example 03

How to register a command, with attributes (parameters), in the generic netlink family and call it from the userspace.