Implemented XDP-hints metadata kfuncs for Intel driver igc. Primarily used the tool in tools/testing/selftests/bpf/ xdp_hw_metadata, when doing driver development of these features. Recommend other driver developers to do the same. In the process xdp_hw_metadata was updated to help assist development. I've documented my practical experience with igc and tool here[1]. [1] https://github.com/xdp-project/xdp-project/blob/master/areas/hints/xdp_hints_kfuncs02_driver_igc.org This patchset implement RX-hash as a simple u32 value (as this is the current kfunc API), but my experience with RX-hash is that we will also need to provide the Hash-type for this raw value to be useful to BPF-developers. This will be addressed in followup work once this patchset lands. --- Jesper Dangaard Brouer (7): xdp: bpf_xdp_metadata use EOPNOTSUPP for no driver support igc: enable and fix RX hash usage by netstack selftests/bpf: xdp_hw_metadata track more timestamps selftests/bpf: xdp_hw_metadata RX hash return code info igc: add igc_xdp_buff wrapper for xdp_buff in driver igc: add XDP hints kfuncs for RX timestamp igc: add XDP hints kfuncs for RX hash Documentation/networking/xdp-rx-metadata.rst | 7 +- drivers/net/ethernet/intel/igc/igc.h | 35 +++++++ drivers/net/ethernet/intel/igc/igc_main.c | 94 ++++++++++++++++--- drivers/net/ethernet/mellanox/mlx4/en_rx.c | 4 +- .../net/ethernet/mellanox/mlx5/core/en/xdp.c | 4 +- drivers/net/veth.c | 4 +- net/core/xdp.c | 10 +- .../selftests/bpf/progs/xdp_hw_metadata.c | 17 ++-- tools/testing/selftests/bpf/xdp_hw_metadata.c | 51 ++++++++-- tools/testing/selftests/bpf/xdp_metadata.h | 1 + 10 files changed, 194 insertions(+), 33 deletions(-) -- Best regards, Jesper Dangaard Brouer MSc.CS, Sr. Principal Kernel Engineer at Red Hat LinkedIn: http://www.linkedin.com/in/brouer
