Document XDP device binding and RX metadata #153
Description
This patch set (https://lore.kernel.org/all/[email protected]/) added the ability for XDP programs to read TX metadata from devices/drivers. It requires the XDP program to be bound to the netdev at load time (not unlike when offloading).
The following pages need to be updated:
- XDP program type - add a section with info about this
- related kfunc pages - add links back to the XDP prog type section
- libbpf and syscall pages - they currently mention
prog_ifindexbeing only used for offloading, no longer true - AF_XDP concept page - metadata can now be part of AF_XDP frames, update the docs to reflect this