IB/mlx5: Mmap the HCA's clock info to user-space

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This patch maps the new page to user space applications to
allow converting a user space completion timestamp to system wall
time at the lowest possible latency cost.
By using a versioning scheme we allow compatibility between current
and future userspace libraries.
The change moves mlx5_ib_mmap_cmd enum from mlx5_ib.h to the
abi header file mlx5-abi.h.

Reviewed-by: Alex Vesker <valex@mellanox.com>
Reviewed-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Feras Daoud <ferasda@mellanox.com>
Signed-off-by: Eitan Rabin <rabin@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>

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Feras Daoud 2018-01-16 20:08:41 +02:00 • committed by Doug Ledford

parent 24d33d2c8e

commit 5c99eaecb1

3 changed files with 59 additions and 13 deletions

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include/uapi/rdma/mlx5-abi.h

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