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* [xdp-hints] [PATCH bpf-next v6 00/17] xdp: hints via kfuncs
@ 2023-01-04 21:59 Stanislav Fomichev
  2023-01-04 21:59 ` [xdp-hints] [PATCH bpf-next v6 01/17] bpf: Document XDP RX metadata Stanislav Fomichev
                   ` (15 more replies)
  0 siblings, 16 replies; 27+ messages in thread
From: Stanislav Fomichev @ 2023-01-04 21:59 UTC (permalink / raw)
  To: bpf
  Cc: ast, daniel, andrii, martin.lau, song, yhs, john.fastabend,
	kpsingh, sdf, haoluo, jolsa, David Ahern, Jakub Kicinski,
	Willem de Bruijn, Jesper Dangaard Brouer, Anatoly Burakov,
	Alexander Lobakin, Magnus Karlsson, Maryam Tahhan, xdp-hints,
	netdev

Please see the first patch in the series for the overall
design and use-cases.

See the following email from Toke for the per-packet metadata overhead:
https://lore.kernel.org/bpf/20221206024554.3826186-1-sdf@google.com/T/#m49d48ea08d525ec88360c7d14c4d34fb0e45e798

Recent changes:

- Reject dev-bound progs at tc (Martin)

- Reuse __bpf_prog_offload_destroy instead of adding
  __bpf_prog_dev_bound_destroy (Marin)

- Drop a bunch of unnecessary NULL checks (Martin)

- Fix compilation of xdp_hw_metadata (Martin and thank you David for the hints)

- Move bpf_dev_bound_kfunc_check into offload.c (Martin)

- Swap "ip netns del" and close_netns in the selftest (Martin)

- Move some code out of bpf_devs_lock (Martin)

- Remove some excessive gotos (Martin)

- Trigger bpf_prog_dev_bound_inherit for BPF_PROG_TYPE_EXT only when
  the destination program is dev-bound (Martin)

- Document @xdp_metadata_ops (David)

- Use :identifiers: when referencing metadata kfuns in the doc (David)

- Spelling and teletyping fixes for the doc (David)

- Add a note about xsk_umem__get_data and METADATA_SIZE (David)

Prior art (to record pros/cons for different approaches):

- Stable UAPI approach:
  https://lore.kernel.org/bpf/20220628194812.1453059-1-alexandr.lobakin@intel.com/
- Metadata+BTF_ID appoach:
  https://lore.kernel.org/bpf/166256538687.1434226.15760041133601409770.stgit@firesoul/
- v5:
  https://lore.kernel.org/bpf/20221220222043.3348718-1-sdf@google.com/
- v4:
  https://lore.kernel.org/bpf/20221213023605.737383-1-sdf@google.com/
- v3:
  https://lore.kernel.org/bpf/20221206024554.3826186-1-sdf@google.com/
- v2:
  https://lore.kernel.org/bpf/20221121182552.2152891-1-sdf@google.com/
- v1:
  https://lore.kernel.org/bpf/20221115030210.3159213-1-sdf@google.com/
- kfuncs v2 RFC:
  https://lore.kernel.org/bpf/20221027200019.4106375-1-sdf@google.com/
- kfuncs v1 RFC:
  https://lore.kernel.org/bpf/20221104032532.1615099-1-sdf@google.com/

Cc: John Fastabend <john.fastabend@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Martin KaFai Lau <martin.lau@linux.dev>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Willem de Bruijn <willemb@google.com>
Cc: Jesper Dangaard Brouer <brouer@redhat.com>
Cc: Anatoly Burakov <anatoly.burakov@intel.com>
Cc: Alexander Lobakin <alexandr.lobakin@intel.com>
Cc: Magnus Karlsson <magnus.karlsson@gmail.com>
Cc: Maryam Tahhan <mtahhan@redhat.com>
Cc: xdp-hints@xdp-project.net
Cc: netdev@vger.kernel.org

Stanislav Fomichev (13):
  bpf: Document XDP RX metadata
  bpf: Rename bpf_{prog,map}_is_dev_bound to is_offloaded
  bpf: Move offload initialization into late_initcall
  bpf: Reshuffle some parts of bpf/offload.c
  bpf: Introduce device-bound XDP programs
  selftests/bpf: Update expected test_offload.py messages
  bpf: XDP metadata RX kfuncs
  veth: Introduce veth_xdp_buff wrapper for xdp_buff
  veth: Support RX XDP metadata
  selftests/bpf: Verify xdp_metadata xdp->af_xdp path
  net/mlx4_en: Introduce wrapper for xdp_buff
  net/mlx4_en: Support RX XDP metadata
  selftests/bpf: Simple program to dump XDP RX metadata

Toke Høiland-Jørgensen (4):
  bpf: Support consuming XDP HW metadata from fext programs
  xsk: Add cb area to struct xdp_buff_xsk
  net/mlx5e: Introduce wrapper for xdp_buff
  net/mlx5e: Support RX XDP metadata

 Documentation/networking/index.rst            |   1 +
 Documentation/networking/xdp-rx-metadata.rst  | 108 +++++
 drivers/net/ethernet/mellanox/mlx4/en_clock.c |  13 +-
 .../net/ethernet/mellanox/mlx4/en_netdev.c    |   6 +
 drivers/net/ethernet/mellanox/mlx4/en_rx.c    |  63 ++-
 drivers/net/ethernet/mellanox/mlx4/mlx4_en.h  |   5 +
 drivers/net/ethernet/mellanox/mlx5/core/en.h  |  11 +-
 .../net/ethernet/mellanox/mlx5/core/en/xdp.c  |  26 +-
 .../net/ethernet/mellanox/mlx5/core/en/xdp.h  |  11 +-
 .../ethernet/mellanox/mlx5/core/en/xsk/rx.c   |  35 +-
 .../ethernet/mellanox/mlx5/core/en/xsk/rx.h   |   2 +
 .../net/ethernet/mellanox/mlx5/core/en_main.c |   6 +
 .../net/ethernet/mellanox/mlx5/core/en_rx.c   |  99 ++--
 drivers/net/netdevsim/bpf.c                   |   4 -
 drivers/net/veth.c                            |  87 +++-
 include/linux/bpf.h                           |  61 ++-
 include/linux/netdevice.h                     |   8 +
 include/net/xdp.h                             |  21 +
 include/net/xsk_buff_pool.h                   |   5 +
 include/uapi/linux/bpf.h                      |   5 +
 kernel/bpf/core.c                             |  12 +-
 kernel/bpf/offload.c                          | 426 ++++++++++++------
 kernel/bpf/syscall.c                          |  40 +-
 kernel/bpf/verifier.c                         |  38 +-
 net/bpf/test_run.c                            |   3 +
 net/core/dev.c                                |   9 +-
 net/core/filter.c                             |   2 +-
 net/core/xdp.c                                |  64 +++
 tools/include/uapi/linux/bpf.h                |   5 +
 tools/testing/selftests/bpf/.gitignore        |   1 +
 tools/testing/selftests/bpf/Makefile          |   9 +-
 .../selftests/bpf/prog_tests/xdp_metadata.c   | 410 +++++++++++++++++
 .../selftests/bpf/progs/xdp_hw_metadata.c     |  81 ++++
 .../selftests/bpf/progs/xdp_metadata.c        |  64 +++
 .../selftests/bpf/progs/xdp_metadata2.c       |  23 +
 tools/testing/selftests/bpf/test_offload.py   |  10 +-
 tools/testing/selftests/bpf/xdp_hw_metadata.c | 405 +++++++++++++++++
 tools/testing/selftests/bpf/xdp_metadata.h    |  15 +
 38 files changed, 1902 insertions(+), 292 deletions(-)
 create mode 100644 Documentation/networking/xdp-rx-metadata.rst
 create mode 100644 tools/testing/selftests/bpf/prog_tests/xdp_metadata.c
 create mode 100644 tools/testing/selftests/bpf/progs/xdp_hw_metadata.c
 create mode 100644 tools/testing/selftests/bpf/progs/xdp_metadata.c
 create mode 100644 tools/testing/selftests/bpf/progs/xdp_metadata2.c
 create mode 100644 tools/testing/selftests/bpf/xdp_hw_metadata.c
 create mode 100644 tools/testing/selftests/bpf/xdp_metadata.h

-- 
2.39.0.314.g84b9a713c41-goog


^ permalink raw reply	[flat|nested] 27+ messages in thread

end of thread, other threads:[~2023-01-09 22:44 UTC | newest]

Thread overview: 27+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2023-01-04 21:59 [xdp-hints] [PATCH bpf-next v6 00/17] xdp: hints via kfuncs Stanislav Fomichev
2023-01-04 21:59 ` [xdp-hints] [PATCH bpf-next v6 01/17] bpf: Document XDP RX metadata Stanislav Fomichev
2023-01-06 15:09   ` [xdp-hints] " David Vernet
2023-01-04 21:59 ` [xdp-hints] [PATCH bpf-next v6 02/17] bpf: Rename bpf_{prog,map}_is_dev_bound to is_offloaded Stanislav Fomichev
2023-01-04 21:59 ` [xdp-hints] [PATCH bpf-next v6 03/17] bpf: Move offload initialization into late_initcall Stanislav Fomichev
2023-01-04 21:59 ` [xdp-hints] [PATCH bpf-next v6 04/17] bpf: Reshuffle some parts of bpf/offload.c Stanislav Fomichev
2023-01-04 21:59 ` [xdp-hints] [PATCH bpf-next v6 05/17] bpf: Introduce device-bound XDP programs Stanislav Fomichev
2023-01-06  0:41   ` [xdp-hints] " Martin KaFai Lau
2023-01-06 17:17     ` Stanislav Fomichev
2023-01-04 21:59 ` [xdp-hints] [PATCH bpf-next v6 06/17] selftests/bpf: Update expected test_offload.py messages Stanislav Fomichev
2023-01-04 21:59 ` [xdp-hints] [PATCH bpf-next v6 07/17] bpf: XDP metadata RX kfuncs Stanislav Fomichev
2023-01-06  0:47   ` [xdp-hints] " Martin KaFai Lau
2023-01-06 17:17     ` Stanislav Fomichev
2023-01-04 21:59 ` [xdp-hints] [PATCH bpf-next v6 09/17] veth: Introduce veth_xdp_buff wrapper for xdp_buff Stanislav Fomichev
2023-01-04 21:59 ` [xdp-hints] [PATCH bpf-next v6 10/17] veth: Support RX XDP metadata Stanislav Fomichev
2023-01-04 21:59 ` [xdp-hints] [PATCH bpf-next v6 11/17] selftests/bpf: Verify xdp_metadata xdp->af_xdp path Stanislav Fomichev
2023-01-04 21:59 ` [xdp-hints] [PATCH bpf-next v6 12/17] net/mlx4_en: Introduce wrapper for xdp_buff Stanislav Fomichev
2023-01-04 21:59 ` [xdp-hints] [PATCH bpf-next v6 13/17] net/mlx4_en: Support RX XDP metadata Stanislav Fomichev
2023-01-04 21:59 ` [xdp-hints] [PATCH bpf-next v6 14/17] xsk: Add cb area to struct xdp_buff_xsk Stanislav Fomichev
2023-01-04 21:59 ` [xdp-hints] [PATCH bpf-next v6 15/17] net/mlx5e: Introduce wrapper for xdp_buff Stanislav Fomichev
2023-01-08  7:38   ` [xdp-hints] " Tariq Toukan
2023-01-09 22:44     ` Stanislav Fomichev
2023-01-04 21:59 ` [xdp-hints] [PATCH bpf-next v6 16/17] net/mlx5e: Support RX XDP metadata Stanislav Fomichev
2023-01-06  1:08   ` [xdp-hints] " Martin KaFai Lau
2023-01-08  7:38   ` Tariq Toukan
2023-01-09 22:44     ` Stanislav Fomichev
2023-01-04 21:59 ` [xdp-hints] [PATCH bpf-next v6 17/17] selftests/bpf: Simple program to dump XDP RX metadata Stanislav Fomichev

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