IB/mlx5: Add create_cq extended command

In order to create a CQ that supports timestamp, mlx5 needs to
support the extended create CQ command with the timestamp flag.

Signed-off-by: Matan Barak <matanb@mellanox.com>
Reviewed-by: Eli Cohen <eli@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

diff --git a/drivers/infiniband/hw/mlx5/cq.c b/drivers/infiniband/hw/mlx5/cq.c
index db2270ad21b2292e4cd84bb9a1d883a7efaa0bd7..bc21ad8ebffd1d83157875841289ed0522355e66 100644 (file)
--- a/drivers/infiniband/hw/mlx5/cq.c
+++ b/drivers/infiniband/hw/mlx5/cq.c
@@ -757,6 +757,10 @@ static void destroy_cq_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_cq *cq)
        mlx5_db_free(dev->mdev, &cq->db);
 }
 
+enum {
+       CQ_CREATE_FLAGS_SUPPORTED = IB_CQ_FLAGS_TIMESTAMP_COMPLETION
+};
+
 struct ib_cq *mlx5_ib_create_cq(struct ib_device *ibdev,
                                const struct ib_cq_init_attr *attr,
                                struct ib_ucontext *context,
@@ -780,6 +784,9 @@ struct ib_cq *mlx5_ib_create_cq(struct ib_device *ibdev,
        if (entries < 0)
                return ERR_PTR(-EINVAL);
 
+       if (attr->flags & ~CQ_CREATE_FLAGS_SUPPORTED)
+               return ERR_PTR(-EOPNOTSUPP);
+
        entries = roundup_pow_of_two(entries + 1);
        if (entries > (1 << MLX5_CAP_GEN(dev->mdev, log_max_cq_sz)))
                return ERR_PTR(-EINVAL);