eBPF 101: Your First Step into Kernel Programming
10 days ago
- #Linux
- #Kernel Programming
- #eBPF
- eBPF allows sandboxed programs to run in the Linux kernel without modifying kernel source code or loading modules.
- eBPF is used for extending kernel capabilities, improving networking, observability, and security.
- Developing with eBPF requires a Python user-space script and a C program for core logic.
- A simple eBPF firewall can block traffic from a specific IP and count incoming packets.
- The Python script manages the eBPF program lifecycle, while the C code handles packet processing in kernel space.
- eBPF is widely adopted by tech giants like Netflix, Dropbox, and Datadog for various use cases.
- The tutorial provides a practical example of setting up an eBPF firewall on Ubuntu.