XDP - The Distro View

Explore the challenges and opportunities of integrating XDP (eXpress Data Path) into Linux distributions in this comprehensive conference talk from the Linux Plumbers Conference. Delve into the complexities faced by distro developers as they aim to deliver XDP functionality to users in a polished and user-friendly package. Learn about initial enablement considerations, security implications, user supportability issues, and future extension possibilities. Examine both solved and unsolved challenges, including packet disappearance, tcpdump limitations, and tool interactions. Gain insights into high-level questions surrounding user perception and implementation capabilities. Discover potential solutions using current infrastructure and discuss future directions for XDP integration in Linux distributions.

Intro
BPF
Privileged BPF
Pain Points for Users
Pain Points for Developers
Classical Example
Package Version
pH
Problems
Github XDP
External Library
HTTP Program Loading
Summary
Program Map
Program Map Diagram
Program Map Implementation
User Space Only Implementation
HTTP Chain Calls