Code Archaeology

Jun 6, 2025 · Cloud Native

eBPF XDP Tutorial: Packet Parsing, Rewriting & Redirection

This article walks through the first three packet processing lessons of the xdp-project/xdp-tutorial, covering packet parsing with verifier errors, packet rewriting with debugging tips using nc and bpf_printk, and packet redirection nuances with veth pairs and XDP_REDIRECT/XDP_TX requirements.