diff options
| author | Aharon Landau <aharonl@nvidia.com> | 2021-06-16 10:57:39 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2021-06-22 20:23:50 +0300 |
| commit | 336529518e9724d4cecabc622e57bcdce02e7c61 (patch) | |
| tree | 7c0062eadca1f760e9798b84c33708900cc77cc2 /drivers/infiniband/hw/mlx5/main.c | |
| parent | 9a1ac95a59d0724ffac2181a98b232c3f94f49f5 (diff) | |
| download | linux-336529518e9724d4cecabc622e57bcdce02e7c61.tar.xz | |
RDMA/mlx5: Support real-time timestamp directly from the device
Currently, if the user asks for a real-time timestamp, the device will
return a free-running one, and the timestamp will be translated to
real-time in the user-space.
When the device supports only real-time timestamp and not free-running,
the creation of the QP will fail even though the user needs supported the
real-time one. To prevent this, we will return the real-time timestamp
directly from the device.
Link: https://lore.kernel.org/r/c6cfc8e6f038575c5c2de6505830f7e74e4de80d.1623829775.git.leonro@nvidia.com
Signed-off-by: Aharon Landau <aharonl@nvidia.com>
Reviewed-by: Maor Gottlieb <maorg@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/infiniband/hw/mlx5/main.c')
| -rw-r--r-- | drivers/infiniband/hw/mlx5/main.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c index 644d5d0ac544..a273cbb9369f 100644 --- a/drivers/infiniband/hw/mlx5/main.c +++ b/drivers/infiniband/hw/mlx5/main.c @@ -1816,6 +1816,12 @@ static int set_ucontext_resp(struct ib_ucontext *uctx, if (MLX5_CAP_GEN(dev->mdev, ece_support)) resp->comp_mask |= MLX5_IB_ALLOC_UCONTEXT_RESP_MASK_ECE; + if (rt_supported(MLX5_CAP_GEN(dev->mdev, sq_ts_format)) && + rt_supported(MLX5_CAP_GEN(dev->mdev, rq_ts_format)) && + rt_supported(MLX5_CAP_ROCE(dev->mdev, qp_ts_format))) + resp->comp_mask |= + MLX5_IB_ALLOC_UCONTEXT_RESP_MASK_REAL_TIME_TS; + resp->num_dyn_bfregs = bfregi->num_dyn_bfregs; return 0; } |