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/*
* Copyright (c) 2013-2015 Intel Corporation. All rights reserved.
* Copyright (c) 2016, Cisco Systems, Inc. All rights reserved.
*
* This software is available to you under the 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.
*/
#include <stdio.h>
#include <stdlib.h>
#include <getopt.h>
#include <unistd.h>
#include <string.h>
#include <rdma/fi_errno.h>
#include "shared.h"
static int init_fabric(void)
{
int ret;
int ret2;
ret = ft_getinfo(hints, &fi);
if (ret)
return ret;
ret = ft_open_fabric_res();
if (ret)
return ret;
if (opts.dst_addr && !ft_parent_proc) {
/* child waits until parent is done creating AV */
ret2 = ft_sync_pair(FI_SUCCESS);
if (ret2)
return ret2;
/* child needs to open AV in read only mode */
av_attr.flags = FI_READ;
}
ret = ft_alloc_active_res(fi);
if (opts.dst_addr && ft_parent_proc) {
/* parent lets the child know its status */
ret2 = ft_sync_pair(ret);
if (ret2)
return ret2;
}
/* handle the failed alloc_active_res call */
if (ret)
return ret;
return ft_enable_ep_recv();
}
static int send_recv()
{
int ret;
const char *message = "Hello from Child Client!";
size_t message_len = strlen(message) + 1;
if (opts.dst_addr) {
fprintf(stdout, "Sending message...\n");
if (snprintf(tx_buf, tx_size, "%s", message) >= tx_size) {
fprintf(stderr, "Transmit buffer too small.\n");
return -FI_ETOOSMALL;
}
ret = ft_tx(ep, remote_fi_addr, message_len, &tx_ctx);
if (ret)
return ret;
fprintf(stdout, "Send completion received\n");
} else {
fprintf(stdout, "Waiting for message from client...\n");
ret = ft_get_rx_comp(rx_seq);
if (ret)
return ret;
ret = check_recv_msg(message);
if (ret)
return ret;
}
return 0;
}
static int run(void)
{
int ret;
int ret2;
ret = init_fabric();
if (ret)
return ret;
if (opts.dst_addr) {
if (ft_parent_proc) {
/* parent inits AV and lets child proceed,
* and itself returns without sending a message */
ret = ft_init_av();
ret2 = ft_sync_pair(ret);
if (ret2)
return ret2;
/* parent doesn't run the send_recv loop,
* it waits for the child until it is done
* with send_recv */
return ret;
} else {
ret2 = ft_sync_pair(FI_SUCCESS);
if (ret2)
return ret2;
remote_fi_addr = ((fi_addr_t *)av_attr.map_addr)[0];
}
} else {
ret = ft_init_av();
if (ret)
return ret;
}
return send_recv();
}
int main(int argc, char **argv)
{
int op, ret;
opts = INIT_OPTS;
opts.options |= FT_OPT_SIZE;
hints = fi_allocinfo();
if (!hints)
return EXIT_FAILURE;
while ((op = getopt(argc, argv, "h" ADDR_OPTS INFO_OPTS)) != -1) {
switch (op) {
default:
ft_parse_addr_opts(op, optarg, &opts);
ft_parseinfo(op, optarg, hints, &opts);
ft_parsecsopts(op, optarg, &opts);
break;
case '?':
case 'h':
ft_usage(argv[0], "A shared AV client-server example.");
return EXIT_FAILURE;
}
}
if (optind < argc)
opts.dst_addr = argv[optind];
if (opts.dst_addr) {
if (!opts.av_name)
opts.av_name = "client_av";
ret = ft_fork_and_pair();
if (ret)
return ret;
} else {
if (!opts.av_name)
opts.av_name = "server_av";
}
hints->ep_attr->type = FI_EP_RDM;
hints->caps = FI_MSG | FI_SHARED_AV;
hints->mode = FI_CONTEXT;
hints->domain_attr->mr_mode = opts.mr_mode;
hints->addr_format = opts.address_format;
ret = run();
if (opts.dst_addr) {
if (ft_wait_child()) {
FT_PRINTERR("ft_wait_child", errno);
}
}
ft_free_res();
return ft_exit_code(ret);
}
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