IB/mlx5: Allow creation of a multi-packet RQ

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Allow creation of a multi-packet receive queue.

In order to create a multi-packet RQ, the following fields in
the mlx5_ib_rwq should be set:
- log_num_strides: Log of number of strides per WQE
- single_stride_log_num_of_bytes: Log of a single stride size
- two_byte_shift_en: When enabled, hardware pads 2 bytes of zeros
  before writing the message to memory (e.g. for the IP alignment).

Signed-off-by: Noa Osherovich <noaos@mellanox.com>
Reviewed-by: Majd Dibbiny <majd@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>

...

This commit is contained in:

Noa Osherovich 2017-10-17 18:01:13 +03:00 • committed by Doug Ledford

parent b4f34597a5

commit ccc8708790

4 changed files with 56 additions and 9 deletions

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4

drivers/infiniband/hw/mlx5/mlx5_ib.h

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52

drivers/infiniband/hw/mlx5/qp.c

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1

include/linux/mlx5/mlx5_ifc.h

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8

include/uapi/rdma/mlx5-abi.h

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