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 de‐
       vice   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 re‐
       turned 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  de‐
       tails.

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)