XDP (eXpress Data Path): A Deep Engineering Analysis of In-Kernel High-Performance Packet Processing
A deep dive into Linux eBPF XDP technology, covering XDP architecture, program lifecycle, Maps mechanism, packet modification, redirection, XDP_DROP/XDP_PASS/XDP_TX/XDP_REDIRECT actions, and production use cases including DDoS protection, Layer-4 load balancing, and AF_XDP.
