mlxcx_rq_add_buffers
extern boolean_t mlxcx_rq_add_buffers(mlxcx_t *, mlxcx_work_queue_t *,
return (mlxcx_rq_add_buffers(mlxp, mlwq, &buf, 1));
if (!mlxcx_rq_add_buffers(mlxp, mlwq, b, n)) {