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Subject: [PATCH bpf RFC-V2 0/5] XDP-hints: API change for RX-hash kfunc
 bpf_xdp_metadata_rx_hash
From:   Jesper Dangaard Brouer <brouer@redhat.com>
To:     bpf@vger.kernel.org, Stanislav Fomichev <sdf@google.com>
Cc:     Jesper Dangaard Brouer <brouer@redhat.com>, netdev@vger.kernel.org,
        linux-kernel@vger.kernel.org, martin.lau@kernel.org,
        ast@kernel.org, daniel@iogearbox.net, alexandr.lobakin@intel.com,
        larysa.zaremba@intel.com, xdp-hints@xdp-project.net,
        anthony.l.nguyen@intel.com, yoong.siang.song@intel.com,
        boon.leong.ong@intel.com, intel-wired-lan@lists.osuosl.org,
        pabeni@redhat.com, jesse.brandeburg@intel.com, kuba@kernel.org,
        edumazet@google.com, john.fastabend@gmail.com, hawk@kernel.org,
        davem@davemloft.net
Date:   Wed, 29 Mar 2023 18:28:58 +0200
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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 use the return value from
bpf_xdp_metadata_rx_hash() to 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.

---

Jesper Dangaard Brouer (5):
      xdp: rss hash types representation
      igc: bpf_xdp_metadata_rx_hash return xdp rss hash type
      veth: bpf_xdp_metadata_rx_hash return xdp rss hash type
      mlx5: bpf_xdp_metadata_rx_hash return xdp rss hash type
      mlx4: bpf_xdp_metadata_rx_hash return xdp rss hash type


 drivers/net/ethernet/intel/igc/igc_main.c     | 22 +++++-
 drivers/net/ethernet/mellanox/mlx4/en_rx.c    | 20 ++++-
 .../net/ethernet/mellanox/mlx5/core/en/xdp.c  | 61 +++++++++++++-
 drivers/net/veth.c                            |  7 +-
 include/linux/mlx5/device.h                   | 14 +++-
 include/net/xdp.h                             | 79 +++++++++++++++++++
 net/core/xdp.c                                |  4 +-
 7 files changed, 196 insertions(+), 11 deletions(-)

--
Best regards,
  Jesper Dangaard Brouer
  MSc.CS, Sr. Principal Kernel Engineer at Red Hat
  LinkedIn: http://www.linkedin.com/in/brouer