1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
|
/*
* Copyright (c) 2005-2009 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 <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <getopt.h>
#include <netdb.h>
#include <rdma/rdma_cma.h>
#include <rdma/rdma_verbs.h>
static const char *server = "0.0.0.0";
static const char *port = "7471";
static struct rdma_cm_id *listen_id, *id;
static struct ibv_mr *mr, *send_mr;
static int send_flags;
static uint8_t send_msg[16];
static uint8_t recv_msg[16];
static int run(void)
{
struct rdma_addrinfo hints, *res;
struct ibv_qp_init_attr init_attr;
struct ibv_qp_attr qp_attr;
struct ibv_wc wc;
int ret;
memset(&hints, 0, sizeof hints);
hints.ai_flags = RAI_PASSIVE;
hints.ai_port_space = RDMA_PS_TCP;
ret = rdma_getaddrinfo(server, port, &hints, &res);
if (ret) {
printf("rdma_getaddrinfo: %s\n", gai_strerror(ret));
return ret;
}
memset(&init_attr, 0, sizeof init_attr);
init_attr.cap.max_send_wr = init_attr.cap.max_recv_wr = 1;
init_attr.cap.max_send_sge = init_attr.cap.max_recv_sge = 1;
init_attr.cap.max_inline_data = 16;
init_attr.sq_sig_all = 1;
ret = rdma_create_ep(&listen_id, res, NULL, &init_attr);
if (ret) {
perror("rdma_create_ep");
goto out_free_addrinfo;
}
ret = rdma_listen(listen_id, 0);
if (ret) {
perror("rdma_listen");
goto out_destroy_listen_ep;
}
ret = rdma_get_request(listen_id, &id);
if (ret) {
perror("rdma_get_request");
goto out_destroy_listen_ep;
}
memset(&qp_attr, 0, sizeof qp_attr);
memset(&init_attr, 0, sizeof init_attr);
ret = ibv_query_qp(id->qp, &qp_attr, IBV_QP_CAP,
&init_attr);
if (ret) {
perror("ibv_query_qp");
goto out_destroy_accept_ep;
}
if (init_attr.cap.max_inline_data >= 16)
send_flags = IBV_SEND_INLINE;
else
printf("rdma_server: device doesn't support IBV_SEND_INLINE, "
"using sge sends\n");
mr = rdma_reg_msgs(id, recv_msg, 16);
if (!mr) {
ret = -1;
perror("rdma_reg_msgs for recv_msg");
goto out_destroy_accept_ep;
}
if ((send_flags & IBV_SEND_INLINE) == 0) {
send_mr = rdma_reg_msgs(id, send_msg, 16);
if (!send_mr) {
ret = -1;
perror("rdma_reg_msgs for send_msg");
goto out_dereg_recv;
}
}
ret = rdma_post_recv(id, NULL, recv_msg, 16, mr);
if (ret) {
perror("rdma_post_recv");
goto out_dereg_send;
}
ret = rdma_accept(id, NULL);
if (ret) {
perror("rdma_accept");
goto out_dereg_send;
}
while ((ret = rdma_get_recv_comp(id, &wc)) == 0);
if (ret < 0) {
perror("rdma_get_recv_comp");
goto out_disconnect;
}
ret = rdma_post_send(id, NULL, send_msg, 16, send_mr, send_flags);
if (ret) {
perror("rdma_post_send");
goto out_disconnect;
}
while ((ret = rdma_get_send_comp(id, &wc)) == 0);
if (ret < 0)
perror("rdma_get_send_comp");
else
ret = 0;
out_disconnect:
rdma_disconnect(id);
out_dereg_send:
if ((send_flags & IBV_SEND_INLINE) == 0)
rdma_dereg_mr(send_mr);
out_dereg_recv:
rdma_dereg_mr(mr);
out_destroy_accept_ep:
rdma_destroy_ep(id);
out_destroy_listen_ep:
rdma_destroy_ep(listen_id);
out_free_addrinfo:
rdma_freeaddrinfo(res);
return ret;
}
int main(int argc, char **argv)
{
int op, ret;
while ((op = getopt(argc, argv, "s:p:")) != -1) {
switch (op) {
case 's':
server = optarg;
break;
case 'p':
port = optarg;
break;
default:
printf("usage: %s\n", argv[0]);
printf("\t[-s server_address]\n");
printf("\t[-p port_number]\n");
exit(1);
}
}
printf("rdma_server: start\n");
ret = run();
printf("rdma_server: end %d\n", ret);
return ret;
}
|
