Re: [PATCH bpf RFC-V3 0/5] XDP-hints: API change for RX-hash kfunc bpf_xdp_metadata_rx_hash

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On 03/30, Jesper Dangaard Brouer wrote:
Notice targeted 6.3-rc kernel via bpf git tree.

Current API for bpf_xdp_metadata_rx_hash() returns the raw RSS hash value,
but doesn't provide information on the RSS hash type (part of 6.3-rc).

This patchset proposal is to change the function call signature via adding
a pointer value argument for provide the RSS hash type.

Alternatively we disable bpf_xdp_metadata_rx_hash() in 6.3-rc, and have
more time to nitpick the RSS hash-type bits.

LGTM with one nit about EMIT_BTF.

---

Jesper Dangaard Brouer (5):
       xdp: rss hash types representation
       mlx5: bpf_xdp_metadata_rx_hash add xdp rss hash type
       veth: bpf_xdp_metadata_rx_hash add xdp rss hash type
       mlx4: bpf_xdp_metadata_rx_hash add xdp rss hash type
       selftests/bpf: Adjust bpf_xdp_metadata_rx_hash for new arg


  drivers/net/ethernet/mellanox/mlx4/en_rx.c    | 22 ++++++-
  drivers/net/ethernet/mellanox/mlx4/mlx4_en.h  |  3 +-
  .../net/ethernet/mellanox/mlx5/core/en/xdp.c  | 63 ++++++++++++++++++-
  drivers/net/veth.c                            | 11 +++-
  include/linux/mlx5/device.h                   | 14 ++++-
  include/linux/netdevice.h                     |  3 +-
  include/net/xdp.h                             | 49 +++++++++++++++
  net/core/xdp.c                                | 10 ++-
  .../selftests/bpf/prog_tests/xdp_metadata.c   |  2 +
  .../selftests/bpf/progs/xdp_hw_metadata.c     | 14 +++--
  .../selftests/bpf/progs/xdp_metadata.c        |  6 +-
  .../selftests/bpf/progs/xdp_metadata2.c       |  7 ++-
  tools/testing/selftests/bpf/xdp_hw_metadata.c |  2 +-
  tools/testing/selftests/bpf/xdp_metadata.h    |  1 +
  14 files changed, 183 insertions(+), 24 deletions(-)

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