IB/mlx5: Add support for QP with a given source QPN

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Allow user space applications to accelerate send and receive
traffic which is typically handled by IPoIB ULP by creating
a UD QP with a given source QPN of the IPoIB UD QP.

UD QP with a given source QPN should basically be similar to
RAW QP from point of view of its created resources.

However,
- Its TIS should point to the source QPN.
- Modify can be done only on its state as the transport attributes
  are managed by its source QP.

This patch manages below:
- Creating/destroying/modifying UD QP with a given source QPN.

Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Reviewed-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>

...

This commit is contained in:

Yishai Hadas 2017-06-08 16:15:08 +03:00 • committed by Doug Ledford

parent 2dee0e5458

commit c2e53b2ce1

2 changed files with 59 additions and 15 deletions

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drivers/infiniband/hw/mlx5/mlx5_ib.h

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72

drivers/infiniband/hw/mlx5/qp.c

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