High-Performance Packet Filtering with Linux XDP
Learn how Linux XDP (eXpress Data Path) allows high-performance packet filtering by executing eBPF programs at the NIC driver level, bypassing the expensive kernel network stack.
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Dropping Packets Before the Stack Wakes Up: A Practical Look at XDP
Linux XDP lets a verified eBPF program drop, pass, or redirect packets right after the NIC receives them, before the network stack pays any cost. A worked ICMP-drop example shows how to compile, attach, verify, and safely detach.