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/*
* Copyright (c) 2010-2014 Intel Corporation. All rights reserved.
*
* This software is available to you under 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 AWV
* 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 <endian.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <netdb.h>
#include <errno.h>
#include <getopt.h>
#include <ctype.h>
#include <rdma/rdma_cma.h>
#include <rdma/rdma_verbs.h>
static const char *server = "127.0.0.1";
static char port[6] = "7471";
static struct rdma_cm_id *id;
static struct ibv_mr *mr;
static struct rdma_addrinfo hints;
static uint8_t send_msg[16];
static uint32_t srqn;
static int post_send(void)
{
struct ibv_send_wr wr, *bad;
struct ibv_sge sge;
int ret;
sge.addr = (uint64_t) (uintptr_t) send_msg;
sge.length = (uint32_t) sizeof send_msg;
sge.lkey = 0;
wr.wr_id = (uintptr_t) NULL;
wr.next = NULL;
wr.sg_list = &sge;
wr.num_sge = 1;
wr.opcode = IBV_WR_SEND;
wr.send_flags = IBV_SEND_INLINE;
if (hints.ai_qp_type == IBV_QPT_XRC_SEND)
wr.qp_type.xrc.remote_srqn = srqn;
ret = ibv_post_send(id->qp, &wr, &bad);
if (ret)
perror("rdma_post_send");
return ret;
}
static int test(void)
{
struct rdma_addrinfo *res;
struct ibv_qp_init_attr attr;
struct ibv_wc wc;
int ret;
ret = rdma_getaddrinfo(server, port, &hints, &res);
if (ret) {
printf("rdma_getaddrinfo: %s\n", gai_strerror(ret));
return ret;
}
memset(&attr, 0, sizeof attr);
attr.cap.max_send_wr = attr.cap.max_recv_wr = 1;
attr.cap.max_send_sge = attr.cap.max_recv_sge = 1;
attr.sq_sig_all = 1;
ret = rdma_create_ep(&id, res, NULL, &attr);
rdma_freeaddrinfo(res);
if (ret) {
perror("rdma_create_ep");
return ret;
}
mr = rdma_reg_msgs(id, send_msg, sizeof send_msg);
if (!mr) {
perror("rdma_reg_msgs");
return ret;
}
ret = rdma_connect(id, NULL);
if (ret) {
perror("rdma_connect");
return ret;
}
if (hints.ai_qp_type == IBV_QPT_XRC_SEND)
srqn = be32toh(*(__be32 *) id->event->param.conn.private_data);
ret = post_send();
if (ret) {
perror("post_send");
return ret;
}
ret = rdma_get_send_comp(id, &wc);
if (ret <= 0) {
perror("rdma_get_recv_comp");
return ret;
}
rdma_disconnect(id);
rdma_dereg_mr(mr);
rdma_destroy_ep(id);
return 0;
}
int main(int argc, char **argv)
{
int op, ret;
hints.ai_port_space = RDMA_PS_TCP;
hints.ai_qp_type = IBV_QPT_RC;
while ((op = getopt(argc, argv, "s:p:c:")) != -1) {
switch (op) {
case 's':
server = optarg;
break;
case 'p':
strncpy(port, optarg, sizeof port - 1);
break;
case 'c':
switch (tolower(optarg[0])) {
case 'r':
break;
case 'x':
hints.ai_port_space = RDMA_PS_IB;
hints.ai_qp_type = IBV_QPT_XRC_SEND;
break;
default:
goto err;
}
break;
default:
goto err;
}
}
printf("%s: start\n", argv[0]);
ret = test();
printf("%s: end %d\n", argv[0], ret);
return ret;
err:
printf("usage: %s\n", argv[0]);
printf("\t[-s server]\n");
printf("\t[-p port_number]\n");
printf("\t[-c communication type]\n");
printf("\t r - RC: reliable-connected (default)\n");
printf("\t x - XRC: extended-reliable-connected\n");
exit(1);
}
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