/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
/*
 * Copyright (c) 2014-2018 Los Alamos National Security, LLC. All rights
 *                         reserved.
 * $COPYRIGHT$
 *
 * Additional copyrights may follow
 *
 * $HEADER$
 */

#if !defined(BTL_UCT_RDMA_H)
#define BTL_UCT_RDMA_H

#include "btl_uct.h"
#include "btl_uct_endpoint.h"
#include "btl_uct_frag.h"

/**
 * @brief allocate a callback structure
 */
mca_btl_uct_uct_completion_t *mca_btl_uct_uct_completion_alloc (mca_btl_uct_module_t *btl, mca_btl_base_endpoint_t *endpoint,
                                                                void *local_address, mca_btl_base_registration_handle_t *local_handle,
                                                                mca_btl_uct_device_context_t *dev_context, mca_btl_base_rdma_completion_fn_t cbfunc,
                                                                void *cbcontext, void *cbdata);
/**
 * @brief release a callback structure
 */
void mca_btl_uct_uct_completion_release (mca_btl_uct_uct_completion_t *comp);

void mca_btl_uct_uct_completion (uct_completion_t *uct_comp, ucs_status_t status);

/**
 * @brief unpack the registration key and ensure the endpoint is connected
 *
 * @param[in]    module        uct btl module
 * @param[in]    context       device context to use
 * @param[in]    endpoint      btl endpoint
 * @param[in]    remote_handle buffer containing remote handle data
 * @param[inout] rkey          uct registration key bundle
 * @param[out]   ep_handle     uct endpoint handle
 */
static inline int mca_btl_uct_get_rkey (mca_btl_uct_module_t *module,
                                        mca_btl_uct_device_context_t *context,
                                        mca_btl_base_endpoint_t *endpoint,
					mca_btl_base_registration_handle_t *remote_handle,
                                        uct_rkey_bundle_t *rkey,
                                        uct_ep_h *ep_handle)
{
    ucs_status_t ucs_status;
    int rc;

    rc = mca_btl_uct_endpoint_check_rdma (module, endpoint, context, ep_handle);
    if (OPAL_SUCCESS != rc) {
        return rc;
    }

#if UCT_API >= UCT_VERSION(1, 7)
    ucs_status = uct_rkey_unpack (module->uct_component, (void *) remote_handle, rkey);
#else
    ucs_status = uct_rkey_unpack ((void *) remote_handle, rkey);
#endif
    return (UCS_OK == ucs_status) ? OPAL_SUCCESS : OPAL_ERROR;
}

static inline void mca_btl_uct_rkey_release (mca_btl_uct_module_t *uct_btl, uct_rkey_bundle_t *rkey)
{
#if UCT_API >= UCT_VERSION(1, 7)
    uct_rkey_release (uct_btl->uct_component, rkey);
#else
    (void) uct_btl;
    uct_rkey_release (rkey);
#endif
}

#endif /* !defined(BTL_UCT_RDMA_H) */