Kernel-Bypass with AF

GitHub Profile of Ryan: Mohawk Infrastructure Developer

Kernel-Bypass with AF_XDP.

Jun 22, 2026 · 32m 48s

Description

Key technical areas covered in this session include: - - The AF_XDP Advantage: How bypassing the traditional Linux kernel networking stack eliminates memory-copy overhead, enabling synthetic throughput of up to...

Key technical areas covered in this session include:

- The AF_XDP Advantage: How bypassing the traditional Linux kernel networking stack eliminates memory-copy overhead, enabling synthetic throughput of up to 98 GB/s for large payloads.
- Hardware and Tuning: A breakdown of the strict prerequisites for these speeds, including AF_XDP-capable NICs, and the critical role of hugepages and IRQ affinity tuning to minimize CPU jitter.
- The afxdp Rust Crate: An architectural look at the crate responsible for low-level ring integration and providing zero-copy views for the forwarding pipeline.
- Safety vs. Raw Throughput: A comparative analysis showing how Ryan maintains Rust-enforced memory safety and Lean 4 formal verification while remaining competitive with industry standards like DPDK and WireGuard

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https://github.com/rwilliamspbg-ops

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