diff options
| author | Michael Guralnik <michaelgur@mellanox.com> | 2020-02-27 14:38:34 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@mellanox.com> | 2020-03-02 18:10:38 +0300 |
| commit | 5e29d1443c46b6ca70a4c940a67e8c09f05dcb7e (patch) | |
| tree | 8e8343851d3e7f0fafb0b6df1d1153f0c21ac9c7 /drivers/infiniband/hw | |
| parent | 75d03665081e00881e76eaa3a7635c9202a82600 (diff) | |
| download | linux-5e29d1443c46b6ca70a4c940a67e8c09f05dcb7e.tar.xz | |
RDMA/mlx5: Prevent UMR usage with RO only when we have RO caps
Relaxed ordering is not supported in UMR so we are disabling UMR usage
when user passes relaxed ordering access flag.
Enable using UMR when user requested relaxed ordering but there are no
relaxed ordering capabilities.
This will prevent user from unnecessarily registering a new mkey.
Fixes: d6de0bb1850f ("RDMA/mlx5: Set relaxed ordering when requested")
Link: https://lore.kernel.org/r/20200227113834.94233-1-leon@kernel.org
Signed-off-by: Michael Guralnik <michaelgur@mellanox.com>
Reviewed-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'drivers/infiniband/hw')
| -rw-r--r-- | drivers/infiniband/hw/mlx5/mlx5_ib.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h index d9bffcc93587..f21d446249b8 100644 --- a/drivers/infiniband/hw/mlx5/mlx5_ib.h +++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h @@ -1532,7 +1532,9 @@ static inline bool mlx5_ib_can_use_umr(struct mlx5_ib_dev *dev, MLX5_CAP_GEN(dev->mdev, umr_modify_atomic_disabled)) return false; - if (access_flags & IB_ACCESS_RELAXED_ORDERING) + if (access_flags & IB_ACCESS_RELAXED_ORDERING && + (MLX5_CAP_GEN(dev->mdev, relaxed_ordering_write) || + MLX5_CAP_GEN(dev->mdev, relaxed_ordering_read))) return false; return true; |