mlx5dv_devx_create_eq(3)   mlx5 Programmer's Manual   mlx5dv_devx_create_eq(3)

NAME
       mlx5dv_devx_create_eq - Create an EQ object

       mlx5dv_devx_destroy_eq - Destroy an EQ object

SYNOPSIS
              #include <infiniband/mlx5dv.h>

              struct mlx5dv_devx_eq *
              mlx5dv_devx_create_eq(struct ibv_context *ibctx, const void *in, size_t inlen,
                            void *out, size_t outlen);

              int mlx5dv_devx_destroy_eq(struct mlx5dv_devx_eq *eq);

DESCRIPTION
       Create / Destroy an EQ object.  Upon creation, the caller prepares the
       in/out mail boxes based on the device specification format; For the
       input mailbox, caller needs to prepare all fields except
       "eqc.log_page_size" and the pas list, which will be set by the driver.
       The "eqc.intr" field should be used from the output of
       mlx5dv_devx_alloc_msi_vector().

ARGUMENTS
       ibctx  RDMA device context to create the action on.

       in     A buffer which contains the command's input data provided in a
              device specification format.

       inlen  The size of in buffer in bytes.

       out    A buffer which contains the command's output data according to
              the device specification format.

       outlen The size of out buffer in bytes.

       eq     The EQ object to work on.

              struct mlx5dv_devx_eq {
                  void *vaddr;
              };

       vaddr  EQ VA that was allocated in the driver for.

NOTES
       mlx5dv_devx_query_eqn() will not support vectors which are used by
       mlx5dv_devx_create_eq().

RETURN VALUE
       Upon success mlx5dv_devx_create_eq will return a new struct
       mlx5dv_devx_eq; On error NULL will be returned and errno will be set.

       Upon success mlx5dv_devx_destroy_eq will return 0, on error errno will
       be returned.

       If the error value is EREMOTEIO, outbox.status and outbox.syndrome will
       contain the command failure details.

SEE ALSO
       mlx5dv_devx_alloc_msi_vector(3), mlx5dv_devx_query_eqn(3)

AUTHOR
       Mark Zhang <markzhang@nvidia.com>

mlx5                              2022-01-12          mlx5dv_devx_create_eq(3)