rdma.c

/* -*- mode:c -*- */
/** @file
 ** @brief OFI RDMA Transport implementation
 **/
/*
 * Copyright (C) 2020 Cray Computer GmbH
 * Copyright (C) 2021 HPE Switzerland GmbH
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * 3. Neither the name of the copyright holder nor the names of its
 *    contributors may be used to endorse or promote products derived from
 *    this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */


#include "maestro/logging.h"
#include "maestro/i_ofi.h"
#include "maestro/i_memlock.h"
#include "maestro/i_memory.h"
#include "maestro/i_pool_manager_protocol.h"
#include "maestro/i_pool_manager_registry.h"

#include "transport.h"
#include "transport_rdma.h"

#include "attributes/maestro-schema.h"

#include <rdma/fabric.h> 
#include <rdma/fi_domain.h>
#include <rdma/fi_rma.h>
#include <unistd.h>
#include <sys/mman.h>
#include <pthread.h>
#include <string.h>

#ifndef MIN
#define MIN(x,y) ((x)<(y) ? (x) : (y))
#endif

/* simplify logging */
#define NOISE(...) LOG_NOISE(MSTRO_LOG_MODULE_TRANSP,__VA_ARGS__)
#define DEBUG(...) LOG_DEBUG(MSTRO_LOG_MODULE_TRANSP,__VA_ARGS__)
#define INFO(...)  LOG_INFO(MSTRO_LOG_MODULE_TRANSP,__VA_ARGS__)
#define WARN(...)  LOG_WARN(MSTRO_LOG_MODULE_TRANSP,__VA_ARGS__)
#define ERR(...)   LOG_ERR(MSTRO_LOG_MODULE_TRANSP,__VA_ARGS__)

/** hashing of memory registrations is done on an aggregate key: CDO
 * ID, OFI domain and maybe OFI endpoint.