Introduction

This repository is about experimenting with the FreeBSD network stack. Development is done with FreeBSD 13.5. It may work with later versions of FreeBSD.

Building

Ensure that you have the Kernel sources at /usr/src.

$ git clone ssh://bitbucket/qnx/fbsd-netmod
$ cd fbsd-netmod/src

The file build.sh in the src directory does the work to build everything in the obj folder. Any arguments you give it are passed on to the make command.

1. To build the sources:

   build.sh

   In the obj folder you'll find the file showifn.ko.

2. To clean the sources

   build.sh clean

Installing the Kernel Module (testing)

I'm testing on a Raspberry Pi 4. I have sudo installed and configured. I'm testing on the same machine that I build on to make it faster. This is however dangerous, as a crash in the kernel can result in data loss.

$ sync
$ sudo kldload ./obj/showifn.ko
$ sudo dmesg

And then uninstall, so it can be rebuilt and tested again.

$ sudo kldunload ./obj/showifn.ko