This is a set of simple programs to demonstrate how to write eBPF programs that make use of XDP to implement a simple ICMP pingback service.
It is intended to show incrementally the features of eBPF and XDP, and how they can be used to implement a simple service. (bare minimum, use of skeleton, use of maps, etc.)
All versions kinda based on the same code, but each one adds a way to load or uses a new eBPF feature.
| Variant | Description |
|---|---|
| minimum | The bare minimum to get a working XDP program. (no maps, no skel) |
| maps | Adds a map to the program to enable/disable the pingback service on runtime. |