netdev - [PATCH bpf RFC 0/4] XDP-hints: API change for RX-hash kfunc bpf_xdp_metadata_rx

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Message-ID: <168003451121.3027256.13000250073816770554.stgit@firesoul>
Date:   Tue, 28 Mar 2023 22:15:53 +0200
From:   Jesper Dangaard Brouer <brouer@...hat.com>
To:     bpf@...r.kernel.org
Cc:     Jesper Dangaard Brouer <brouer@...hat.com>, netdev@...r.kernel.org,
        Stanislav Fomichev <sdf@...gle.com>, martin.lau@...nel.org,
        ast@...nel.org, daniel@...earbox.net, alexandr.lobakin@...el.com,
        larysa.zaremba@...el.com, xdp-hints@...-project.net,
        anthony.l.nguyen@...el.com, yoong.siang.song@...el.com,
        boon.leong.ong@...el.com, intel-wired-lan@...ts.osuosl.org,
        pabeni@...hat.com, jesse.brandeburg@...el.com, kuba@...nel.org,
        edumazet@...gle.com, john.fastabend@...il.com, hawk@...nel.org,
        davem@...emloft.net
Subject: [PATCH bpf RFC 0/4] XDP-hints: API change for RX-hash kfunc
 bpf_xdp_metadata_rx_hash

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.

---

Jesper Dangaard Brouer (4):
      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


 drivers/net/ethernet/intel/igc/igc_main.c     | 22 ++++++-
 .../net/ethernet/mellanox/mlx5/core/en/xdp.c  | 61 ++++++++++++++++++-
 drivers/net/veth.c                            |  2 +-
 include/linux/mlx5/device.h                   | 14 ++++-
 include/net/xdp.h                             | 54 ++++++++++++++++
 net/core/xdp.c                                |  4 +-
 6 files changed, 150 insertions(+), 7 deletions(-)

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