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From: Jesper Dangaard Brouer <brouer@redhat.com>
To: bpf@vger.kernel.org
Cc: Jesper Dangaard Brouer <brouer@redhat.com>,
	netdev@vger.kernel.org, Stanislav Fomichev <sdf@google.com>,
	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
Subject: [xdp-hints] [PATCH bpf-next V1 0/7] XDP-hints kfuncs for Intel driver igc
Date: Fri, 17 Mar 2023 15:33:10 +0100	[thread overview]
Message-ID: <167906343576.2706833.17489167761084071890.stgit@firesoul> (raw)

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


             reply	other threads:[~2023-03-17 14:33 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-03-17 14:33 Jesper Dangaard Brouer [this message]
2023-03-17 14:33 ` [xdp-hints] [PATCH bpf-next V1 1/7] xdp: bpf_xdp_metadata use EOPNOTSUPP for no driver support Jesper Dangaard Brouer
2023-03-17 21:21   ` [xdp-hints] " Stanislav Fomichev
2023-03-20 18:42     ` Jesper Dangaard Brouer
2023-03-21 12:24       ` Toke Høiland-Jørgensen
2023-03-21 13:48         ` Jesper Dangaard Brouer
2023-03-17 14:33 ` [xdp-hints] [PATCH bpf-next V1 2/7] igc: enable and fix RX hash usage by netstack Jesper Dangaard Brouer
2023-03-17 14:33 ` [xdp-hints] [PATCH bpf-next V1 3/7] selftests/bpf: xdp_hw_metadata track more timestamps Jesper Dangaard Brouer
2023-03-17 21:09   ` [xdp-hints] " Stanislav Fomichev
2023-03-21 13:29     ` Jesper Dangaard Brouer
2023-03-17 14:33 ` [xdp-hints] [PATCH bpf-next V1 4/7] selftests/bpf: xdp_hw_metadata RX hash return code info Jesper Dangaard Brouer
2023-03-17 21:13   ` [xdp-hints] " Stanislav Fomichev
2023-03-21 13:32     ` Jesper Dangaard Brouer
2023-03-21 18:45       ` Stanislav Fomichev
2023-03-22 15:57         ` Jesper Dangaard Brouer
2023-03-17 14:33 ` [xdp-hints] [PATCH bpf-next V1 5/7] igc: add igc_xdp_buff wrapper for xdp_buff in driver Jesper Dangaard Brouer
2023-03-17 14:33 ` [xdp-hints] [PATCH bpf-next V1 6/7] igc: add XDP hints kfuncs for RX timestamp Jesper Dangaard Brouer
2023-03-17 14:33 ` [xdp-hints] [PATCH bpf-next V1 7/7] igc: add XDP hints kfuncs for RX hash Jesper Dangaard Brouer

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