net/mlx5e: Add control path for SHAMPO feature

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This commit introduces the control path infrastructure for SHAMPO feature.

SHAMPO feature enables packet stitching by splitting packets to
header and payload, the header is placed on a dedicated buffer
and the payload on the RX ring, this allows stitching the data part
of a flow together continuously in the receive buffer.

SHAMPO feature is implemented as linked list striding RQ feature.
To support packets splitting and payload stitching:
- Enlarge the ICOSQ and the correspond CQ to support the header buffer
  memory regions.
- Add support to create linked list striding RQ with SHAMPO feature set
  in the open_rq function.
- Add deallocation function and corresponded calls for SHAMPO header
  buffer.
- Add mlx5e_create_umr_klm_mkey to support KLM mkey for the header
  buffer.
- Rename mlx5e_create_umr_mkey to mlx5e_create_umr_mtt_mkey.

Signed-off-by: Ben Ben-Ishay <benishay@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

...

This commit is contained in:

Ben Ben-Ishay 2021-06-09 12:28:57 +03:00 • committed by Saeed Mahameed

parent d7b896acbd

commit e5ca8fb08a

6 changed files with 400 additions and 30 deletions

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28

drivers/net/ethernet/mellanox/mlx5/core/en.h

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142

drivers/net/ethernet/mellanox/mlx5/core/en/params.c

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12

drivers/net/ethernet/mellanox/mlx5/core/en/params.h

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drivers/net/ethernet/mellanox/mlx5/core/en/tir.c

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186

drivers/net/ethernet/mellanox/mlx5/core/en_main.c

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38

drivers/net/ethernet/mellanox/mlx5/core/en_rx.c

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