/*
 * Copyright (c) 2005 Topspin Communications. All rights reserved.
 * Copyright (c) 2005 Mellanox Technologies Ltd. All rights reserved.
 * Copyright (c) 2005 Hewlett Packard, Inc (Grant Grundler)
 * Copyright (c) 2009 HNR Consulting. All rights reserved.
 *
 * This software is available to you under a choice of one of two
 * licenses. You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 * Redistribution and use in source and binary forms, with or
 * without modification, are permitted provided that the following
 * conditions are met:
 *
 * - Redistributions of source code must retain the above
 * copyright notice, this list of conditions and the following
 * disclaimer.
 *
 * - 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.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 * $Id$
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include "get_clock.h"
#include "perftest_resources.h"
#include "perftest_parameters.h"
#include "perftest_communication.h"

int main(int argc, char *argv[])
{
	int ret_parser, i = 0;
	struct report_options      report;
	struct pingpong_context    ctx;
	struct ibv_device          *ib_dev;
	struct perftest_parameters user_param;
	struct pingpong_dest       *my_dest = NULL;
	struct pingpong_dest       *rem_dest = NULL;
	struct perftest_comm       user_comm;

	/* init default values to user's parameters */
	memset(&ctx,        0, sizeof(struct pingpong_context));
	memset(&user_param, 0, sizeof(struct perftest_parameters));
	memset(&user_comm,  0, sizeof(struct perftest_comm));

	user_param.verb = READ;
	user_param.tst = LAT;
	user_param.r_flag = &report;
	strncpy(user_param.version, VERSION, sizeof(user_param.version));

	/* Configure the parameters values according to user arguments or defalut values. */
	ret_parser = parser(&user_param, argv, argc);
	if (ret_parser) {
		if (ret_parser != VERSION_EXIT && ret_parser != HELP_EXIT)
			fprintf(stderr, " Parser function exited with Error\n");
		return FAILURE;
	}

	if(user_param.use_xrc || user_param.connection_type == DC) {
		user_param.num_of_qps *= 2;
	}

	/* Finding the IB device selected (or defalut if no selected). */
	ib_dev = ctx_find_dev(user_param.ib_devname);
	if (!ib_dev) {
		fprintf(stderr, " Unable to find the Infiniband/RoCE device\n");
		return FAILURE;
	}

	/* Getting the relevant context from the device */
	ctx.context = ibv_open_device(ib_dev);
	if (!ctx.context) {
		fprintf(stderr, " Couldn't get context for the device\n");
		return FAILURE;
	}

	/* Verify user parameters that require the device context,
	 * the function will print the relevent error info. */
	if (verify_params_with_device_context(ctx.context, &user_param)) {
		return FAILURE;
	}

	/* See if MTU and link type are valid and supported. */
	if (check_link(ctx.context, &user_param)) {
		fprintf(stderr, " Couldn't get context for the device\n");
		return FAILURE;
	}

	/* copy the relevant user parameters to the comm struct + creating rdma_cm resources. */
	if (create_comm_struct(&user_comm, &user_param)) {
		fprintf(stderr, " Unable to create RDMA_CM resources\n");
		return FAILURE;
	}

	if (user_param.output == FULL_VERBOSITY && user_param.machine == SERVER) {
		printf("\n************************************\n");
		printf("* Waiting for client to connect... *\n");
		printf("************************************\n");
	}

	/* Initialize the connection and print the local data. */
	if (establish_connection(&user_comm)) {
		fprintf(stderr, " Unable to init the socket connection\n");
		return FAILURE;
	}

	exchange_versions(&user_comm, &user_param);

	check_sys_data(&user_comm, &user_param);

	/* See if MTU and link type are valid and supported. */
	if (check_mtu(ctx.context, &user_param, &user_comm)) {
		fprintf(stderr, " Couldn't get context for the device\n");
		return FAILURE;
	}

	ALLOCATE(my_dest , struct pingpong_dest , user_param.num_of_qps);
	memset(my_dest, 0, sizeof(struct pingpong_dest)*user_param.num_of_qps);
	ALLOCATE(rem_dest , struct pingpong_dest , user_param.num_of_qps);
	memset(rem_dest, 0, sizeof(struct pingpong_dest)*user_param.num_of_qps);

	/* Allocate arrays */
	alloc_ctx(&ctx, &user_param);

	/* create all the basic IB resources (data buffer, PD, MR, CQ and events channel) */
	if (ctx_init(&ctx, &user_param)) {
		fprintf(stderr, " Couldn't create IB resources\n");
		return FAILURE;
	}

	/* Set up the Connection. */
	if (set_up_connection(&ctx, &user_param, my_dest)) {
		fprintf(stderr, " Unable to set up socket connection\n");
		return FAILURE;
	}

	/* Print basic test information. */
	ctx_print_test_info(&user_param);

	for (i=0; i < user_param.num_of_qps; i++)
		ctx_print_pingpong_data(&my_dest[i], &user_comm);

	/* shaking hands and gather the other side info. */
	if (ctx_hand_shake(&user_comm, my_dest, rem_dest)) {
		fprintf(stderr, "Failed to exchange data between server and clients\n");
		return FAILURE;
	}

	user_comm.rdma_params->side = REMOTE;
	for (i=0; i < user_param.num_of_qps; i++) {

		/* shaking hands and gather the other side info. */
		if (ctx_hand_shake(&user_comm, &my_dest[i], &rem_dest[i])) {
			fprintf(stderr, "Failed to exchange data between server and clients\n");
			return FAILURE;
		}

		ctx_print_pingpong_data(&rem_dest[i], &user_comm);
	}

	if (ctx_check_gid_compatibility(&my_dest[0], &rem_dest[0])) {
		fprintf(stderr, "\n Found Incompatibility issue with GID types.\n");
		fprintf(stderr, " Please Try to use a different IP version.\n\n");
		return FAILURE;
	}

	if (ctx_connect(&ctx, rem_dest, &user_param, my_dest)) {
		fprintf(stderr, " Unable to Connect the HCA's through the link\n");
		return FAILURE;
	}

	/* An additional handshake is required after moving qp to RTR. */
	if (ctx_hand_shake(&user_comm, my_dest, rem_dest)) {
		fprintf(stderr, "Failed to exchange data between server and clients\n");
		return FAILURE;
	}

	/* Only Client post read request. */
	if (user_param.machine == SERVER) {

		if (ctx_close_connection(&user_comm, my_dest, rem_dest)) {
			fprintf(stderr, "Failed to close connection between server and client\n");
			return FAILURE;
		}
		if (user_param.output == FULL_VERBOSITY) {
			printf(RESULT_LINE);
		}
		return 0;

	}

	if (user_param.use_event) {
		if (ibv_req_notify_cq(ctx.send_cq, 0)) {
			fprintf(stderr, "Couldn't request CQ notification\n");
			return FAILURE;
		}
	}

	if (user_param.output == FULL_VERBOSITY) {
		printf(RESULT_LINE);
		printf("%s", (user_param.test_type == ITERATIONS) ? RESULT_FMT_LAT : RESULT_FMT_LAT_DUR);
		printf((user_param.cpu_util_data.enable ? RESULT_EXT_CPU_UTIL : RESULT_EXT));
	}

	ctx_set_send_wqes(&ctx, &user_param, rem_dest);

	if (user_param.test_method == RUN_ALL) {
		for (i = 1; i < 24 ; ++i) {
			user_param.size = (uint64_t)1 << i;
			if(run_iter_lat(&ctx, &user_param));
				return 17;

			/* user_param.test_type == ITERATIONS ? print_report_lat(&user_param) : print_report_lat_duration(&user_param); */
			print_report_lat(&user_param);
		}
	} else {
		if(run_iter_lat(&ctx, &user_param))
			return 18;

		/* user_param.test_type == ITERATIONS ? print_report_lat(&user_param) : print_report_lat_duration(&user_param); */
		print_report_lat(&user_param);
	}

	if (ctx_close_connection(&user_comm, my_dest, rem_dest)) {
		fprintf(stderr, "Failed to close connection between server and client\n");
		return FAILURE;
	}

	if (user_param.output == FULL_VERBOSITY) {
		printf(RESULT_LINE);
	}
	return 0;
}