ibt_mem_alloc_hdl_t
caddr_t *kaddrp, ibt_mem_alloc_hdl_t *mem_alloc_hdl)
ibt_free_io_mem(ibt_hca_hdl_t hca_hdl, ibt_mem_alloc_hdl_t mem_alloc_hdl)
caddr_t *, ibt_mem_alloc_hdl_t *);
ibt_status_t ibt_free_io_mem(ibt_hca_hdl_t, ibt_mem_alloc_hdl_t);