Demonstration of userspace and kernel communication via Netlink-protocol (both Unicast and Multicast). Additionally, a character device-driver /dev/char_device to be expanded to a full-fledged module to use netlink for inter-process and inter-kernel communication instead of ioctls.
References:
- Linux Device Drivers, by Jonathan Corbet, Alessandro Rubini (Heavily)
- writing-example-driver-from-scratch driver.c