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/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
/*
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2006 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* Copyright (c) 2017-2018 Los Alamos National Security, LLC. All rights
* reserved.
* Copyright (c) 2020 Amazon.com, Inc. or its affiliates.
* All Rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#ifndef MCA_BTL_UCT_ENDPOINT_H
#define MCA_BTL_UCT_ENDPOINT_H
#include "btl_uct.h"
#include "opal/class/opal_list.h"
#include "opal/util/event.h"
BEGIN_C_DECLS
mca_btl_base_endpoint_t *mca_btl_uct_endpoint_create(opal_proc_t *proc);
int mca_btl_uct_endpoint_connect(mca_btl_uct_module_t *module, mca_btl_uct_endpoint_t *endpoint,
int ep_index, void *ep_addr, int tl_index);
static inline int mca_btl_uct_endpoint_test_am(mca_btl_uct_module_t *module,
mca_btl_uct_endpoint_t *endpoint,
mca_btl_uct_device_context_t *context,
uct_ep_h *ep_handle)
{
int tl_index = module->am_tl->tl_index;
int ep_index = context->context_id;
if (OPAL_LIKELY(MCA_BTL_UCT_ENDPOINT_FLAG_CONN_READY
& endpoint->uct_eps[ep_index][tl_index].flags)) {
*ep_handle = endpoint->uct_eps[ep_index][tl_index].uct_ep;
return OPAL_SUCCESS;
}
return OPAL_ERR_NOT_AVAILABLE;
}
/**
* @brief Check if the endpoint is connected and start the connection if not
*
* @param[in] module UCT BTL module
* @param[in] endpoint UCT BTL endpoint
* @param[in] context UCT BTL device context
* @param[out] ep_handle UCT endpoint handle
* @param[in] tl_index UCT TL index (0 or 1)
*
* @returns OPAL_SUCCESS if the endpoint is connected and ready to us
* @returns OPAL_ERR_RESOURCE_BUSY if the connection is underway
* @returns OPAL_ERROR otherwise
*/
static inline int mca_btl_uct_endpoint_check(mca_btl_uct_module_t *module,
mca_btl_uct_endpoint_t *endpoint,
mca_btl_uct_device_context_t *context,
uct_ep_h *ep_handle, const int tl_index)
{
int ep_index = context->context_id;
int rc;
if (OPAL_LIKELY(MCA_BTL_UCT_ENDPOINT_FLAG_CONN_READY
& endpoint->uct_eps[ep_index][tl_index].flags)) {
*ep_handle = endpoint->uct_eps[ep_index][tl_index].uct_ep;
return OPAL_SUCCESS;
}
rc = mca_btl_uct_endpoint_connect(module, endpoint, ep_index, NULL, tl_index);
*ep_handle = endpoint->uct_eps[ep_index][tl_index].uct_ep;
BTL_VERBOSE(
("mca_btl_uct_endpoint_connect returned %d. context id = %d, flags = 0x%x", rc, ep_index,
MCA_BTL_UCT_ENDPOINT_FLAG_CONN_READY & endpoint->uct_eps[ep_index][tl_index].flags));
return rc;
}
static inline int mca_btl_uct_endpoint_check_rdma(mca_btl_uct_module_t *module,
mca_btl_uct_endpoint_t *endpoint,
mca_btl_uct_device_context_t *context,
uct_ep_h *ep_handle)
{
assert(NULL != module->rdma_tl);
return mca_btl_uct_endpoint_check(module, endpoint, context, ep_handle,
module->rdma_tl->tl_index);
}
static inline int mca_btl_uct_endpoint_check_am(mca_btl_uct_module_t *module,
mca_btl_uct_endpoint_t *endpoint,
mca_btl_uct_device_context_t *context,
uct_ep_h *ep_handle)
{
assert(NULL != module->am_tl);
return mca_btl_uct_endpoint_check(module, endpoint, context, ep_handle,
module->am_tl->tl_index);
}
END_C_DECLS
#endif
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