net/mlx5e: Don't prefill WQEs in XDP SQ in the multi buffer mode

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When MPWQE is disabled, mlx5e_open_xdpsq() prefills the common fields of
WQEs in the XDP SQ to save time when sending packets.
mlx5e_xmit_xdp_frame() runs on the prefilled fields, however, sending
multi buffer XDP frames would require changing some of these fields on a
per-packet basis. Besides that, mlx5e_xmit_xdp_frame() will be used as a
fallback to send multi buffer XDP frames when MPWQE is enabled (MPWQE
can only handle linear packets).

In order to prepare for XDP multi buffer support, this commit introduces
a mode for mlx5e_xmit_xdp_frame() that fills all the fields itself.

Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

...

This commit is contained in:

Maxim Mikityanskiy 2022-01-31 17:41:31 +02:00 • committed by Saeed Mahameed

parent c090451633

commit 9ded70fa1d

6 changed files with 46 additions and 5 deletions

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1

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

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4

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

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2

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

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32

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

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2

drivers/net/ethernet/mellanox/mlx5/core/en/xsk/setup.c

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10

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

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