Extend netdev netlink family to expose the bitmask with the kfuncs that the device implements. The source of truth is the device's xdp_metadata_ops. There is some amount of auto-generated netlink boilerplate; the change itself is super minimal. v2: - add netdev->xdp_metadata_ops NULL check when dumping to netlink (Martin) Cc: netdev@xxxxxxxxxxxxxxx Cc: Willem de Bruijn <willemb@xxxxxxxxxx> Stanislav Fomichev (3): bpf: make it easier to add new metadata kfunc bpf: expose information about supported xdp metadata kfunc tools: ynl: extend netdev sample to dump xdp-rx-metadata-features Documentation/netlink/specs/netdev.yaml | 21 ++++++++++++++++++++ Documentation/networking/xdp-rx-metadata.rst | 7 +++++++ include/net/xdp.h | 19 ++++++++++++++---- include/uapi/linux/netdev.h | 16 +++++++++++++++ kernel/bpf/offload.c | 9 +++++---- net/core/netdev-genl.c | 12 ++++++++++- net/core/xdp.c | 4 ++-- tools/include/uapi/linux/netdev.h | 16 +++++++++++++++ tools/net/ynl/generated/netdev-user.c | 19 ++++++++++++++++++ tools/net/ynl/generated/netdev-user.h | 3 +++ tools/net/ynl/samples/Makefile | 2 +- tools/net/ynl/samples/netdev.c | 8 +++++++- 12 files changed, 123 insertions(+), 13 deletions(-) -- 2.42.0.283.g2d96d420d3-goog
