Commit | Line | Data |
---|---|---|
ed92ac0c | 1 | /* |
d4f12dd0 | 2 | * Transfer data over the net. |
ed92ac0c JA |
3 | */ |
4 | #include <stdio.h> | |
5 | #include <stdlib.h> | |
6 | #include <unistd.h> | |
7 | #include <errno.h> | |
8 | #include <assert.h> | |
9 | #include <netinet/in.h> | |
10 | #include <arpa/inet.h> | |
11 | #include <netdb.h> | |
5fdd124a | 12 | #include <sys/poll.h> |
ed92ac0c JA |
13 | |
14 | #include "../fio.h" | |
15 | #include "../os.h" | |
16 | ||
b5af8293 JA |
17 | struct netio_data { |
18 | int listenfd; | |
19 | int send_to_net; | |
20 | char host[64]; | |
21 | struct sockaddr_in addr; | |
22 | }; | |
ed92ac0c JA |
23 | |
24 | static int fio_netio_prep(struct thread_data *td, struct io_u *io_u) | |
25 | { | |
b5af8293 | 26 | struct netio_data *nd = td->io_ops->data; |
ed92ac0c JA |
27 | struct fio_file *f = io_u->file; |
28 | ||
7a6499da JA |
29 | /* |
30 | * Make sure we don't see spurious reads to a receiver, and vice versa | |
31 | */ | |
b5af8293 JA |
32 | if ((nd->send_to_net && io_u->ddir == DDIR_READ) || |
33 | (!nd->send_to_net && io_u->ddir == DDIR_WRITE)) { | |
e1161c32 | 34 | td_verror(td, EINVAL, "bad direction"); |
7a6499da | 35 | return 1; |
ed92ac0c | 36 | } |
7a6499da | 37 | |
ed92ac0c JA |
38 | if (io_u->ddir == DDIR_SYNC) |
39 | return 0; | |
40 | if (io_u->offset == f->last_completed_pos) | |
41 | return 0; | |
42 | ||
e01547d2 JA |
43 | /* |
44 | * If offset is different from last end position, it's a seek. | |
45 | * As network io is purely sequential, we don't allow seeks. | |
46 | */ | |
e1161c32 | 47 | td_verror(td, EINVAL, "cannot seek"); |
ed92ac0c JA |
48 | return 1; |
49 | } | |
50 | ||
51 | static int fio_netio_queue(struct thread_data *td, struct io_u *io_u) | |
52 | { | |
ed92ac0c | 53 | struct fio_file *f = io_u->file; |
d4f12dd0 | 54 | int ret, flags = 0; |
7a6499da JA |
55 | |
56 | if (io_u->ddir == DDIR_WRITE) { | |
7a6499da JA |
57 | /* |
58 | * if we are going to write more, set MSG_MORE | |
59 | */ | |
60 | if (td->this_io_bytes[DDIR_WRITE] + io_u->xfer_buflen < | |
61 | td->io_size) | |
62 | flags = MSG_MORE; | |
ed92ac0c | 63 | |
7a6499da | 64 | ret = send(f->fd, io_u->xfer_buf, io_u->xfer_buflen, flags); |
d4f12dd0 JA |
65 | } else if (io_u->ddir == DDIR_READ) { |
66 | flags = MSG_WAITALL; | |
67 | ret = recv(f->fd, io_u->xfer_buf, io_u->xfer_buflen, flags); | |
68 | } else | |
7a6499da | 69 | ret = 0; /* must be a SYNC */ |
ed92ac0c | 70 | |
cec6b55d | 71 | if (ret != (int) io_u->xfer_buflen) { |
22819ec2 | 72 | if (ret >= 0) { |
cec6b55d JA |
73 | io_u->resid = io_u->xfer_buflen - ret; |
74 | io_u->error = 0; | |
36167d82 | 75 | return FIO_Q_COMPLETED; |
ed92ac0c JA |
76 | } else |
77 | io_u->error = errno; | |
78 | } | |
79 | ||
36167d82 | 80 | if (io_u->error) |
e1161c32 | 81 | td_verror(td, io_u->error, "xfer"); |
ed92ac0c | 82 | |
36167d82 | 83 | return FIO_Q_COMPLETED; |
ed92ac0c JA |
84 | } |
85 | ||
b5af8293 | 86 | static int fio_netio_connect(struct thread_data *td, struct fio_file *f) |
ed92ac0c | 87 | { |
b5af8293 | 88 | struct netio_data *nd = td->io_ops->data; |
ed92ac0c | 89 | |
b5af8293 JA |
90 | f->fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); |
91 | if (f->fd < 0) { | |
92 | td_verror(td, errno, "socket"); | |
93 | return 1; | |
ed92ac0c JA |
94 | } |
95 | ||
b5af8293 JA |
96 | if (connect(f->fd, (struct sockaddr *) &nd->addr, sizeof(nd->addr)) < 0) { |
97 | td_verror(td, errno, "connect"); | |
98 | return 1; | |
ed92ac0c JA |
99 | } |
100 | ||
101 | return 0; | |
ed92ac0c JA |
102 | } |
103 | ||
b5af8293 | 104 | static int fio_netio_accept(struct thread_data *td, struct fio_file *f) |
5fdd124a | 105 | { |
b5af8293 JA |
106 | struct netio_data *nd = td->io_ops->data; |
107 | socklen_t socklen = sizeof(nd->addr); | |
5fdd124a | 108 | struct pollfd pfd; |
b5af8293 | 109 | int ret; |
5fdd124a | 110 | |
b5af8293 | 111 | fprintf(f_out, "fio: waiting for connection\n"); |
5fdd124a JA |
112 | |
113 | /* | |
114 | * Accept loop. poll for incoming events, accept them. Repeat until we | |
115 | * have all connections. | |
116 | */ | |
b5af8293 JA |
117 | while (!td->terminate) { |
118 | pfd.fd = nd->listenfd; | |
5fdd124a JA |
119 | pfd.events = POLLIN; |
120 | ||
121 | ret = poll(&pfd, 1, -1); | |
122 | if (ret < 0) { | |
123 | if (errno == EINTR) | |
124 | continue; | |
125 | ||
e1161c32 | 126 | td_verror(td, errno, "poll"); |
5fdd124a JA |
127 | break; |
128 | } else if (!ret) | |
129 | continue; | |
130 | ||
0c09442b JA |
131 | /* |
132 | * should be impossible | |
133 | */ | |
134 | if (!(pfd.revents & POLLIN)) | |
135 | continue; | |
136 | ||
b5af8293 JA |
137 | f->fd = accept(nd->listenfd, (struct sockaddr *) &nd->addr, &socklen); |
138 | if (f->fd < 0) { | |
139 | td_verror(td, errno, "accept"); | |
140 | return 1; | |
141 | } | |
142 | break; | |
143 | } | |
5fdd124a | 144 | |
b5af8293 JA |
145 | return 0; |
146 | } | |
147 | ||
148 | ||
149 | static int fio_netio_open_file(struct thread_data *td, struct fio_file *f) | |
150 | { | |
151 | if (td_read(td)) | |
152 | return fio_netio_accept(td, f); | |
153 | else | |
154 | return fio_netio_connect(td, f); | |
155 | } | |
156 | ||
157 | static int fio_netio_setup_connect(struct thread_data *td, const char *host, | |
158 | unsigned short port) | |
159 | { | |
160 | struct netio_data *nd = td->io_ops->data; | |
161 | ||
162 | nd->addr.sin_family = AF_INET; | |
163 | nd->addr.sin_port = htons(port); | |
164 | ||
165 | if (inet_aton(host, &nd->addr.sin_addr) != 1) { | |
166 | struct hostent *hent; | |
167 | ||
168 | hent = gethostbyname(host); | |
169 | if (!hent) { | |
170 | td_verror(td, errno, "gethostbyname"); | |
171 | return 1; | |
5fdd124a | 172 | } |
b5af8293 JA |
173 | |
174 | memcpy(&nd->addr.sin_addr, hent->h_addr, 4); | |
5fdd124a JA |
175 | } |
176 | ||
177 | return 0; | |
178 | } | |
179 | ||
b5af8293 | 180 | static int fio_netio_setup_listen(struct thread_data *td, short port) |
ed92ac0c | 181 | { |
b5af8293 | 182 | struct netio_data *nd = td->io_ops->data; |
5fdd124a | 183 | int fd, opt; |
ed92ac0c | 184 | |
6bedbfaf | 185 | fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); |
ed92ac0c | 186 | if (fd < 0) { |
e1161c32 | 187 | td_verror(td, errno, "socket"); |
ed92ac0c JA |
188 | return 1; |
189 | } | |
190 | ||
191 | opt = 1; | |
192 | if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) { | |
e1161c32 | 193 | td_verror(td, errno, "setsockopt"); |
ed92ac0c JA |
194 | return 1; |
195 | } | |
6bedbfaf JA |
196 | #ifdef SO_REUSEPORT |
197 | if (setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) { | |
e1161c32 | 198 | td_verror(td, errno, "setsockopt"); |
6bedbfaf JA |
199 | return 1; |
200 | } | |
201 | #endif | |
ed92ac0c | 202 | |
b5af8293 JA |
203 | nd->addr.sin_family = AF_INET; |
204 | nd->addr.sin_addr.s_addr = htonl(INADDR_ANY); | |
205 | nd->addr.sin_port = htons(port); | |
ed92ac0c | 206 | |
b5af8293 | 207 | if (bind(fd, (struct sockaddr *) &nd->addr, sizeof(nd->addr)) < 0) { |
e1161c32 | 208 | td_verror(td, errno, "bind"); |
ed92ac0c JA |
209 | return 1; |
210 | } | |
211 | if (listen(fd, 1) < 0) { | |
e1161c32 | 212 | td_verror(td, errno, "listen"); |
ed92ac0c JA |
213 | return 1; |
214 | } | |
215 | ||
b5af8293 JA |
216 | nd->listenfd = fd; |
217 | return 0; | |
ed92ac0c JA |
218 | } |
219 | ||
9bec88e1 | 220 | static int fio_netio_init(struct thread_data *td) |
ed92ac0c | 221 | { |
b5af8293 | 222 | struct netio_data *nd = td->io_ops->data; |
e01547d2 | 223 | unsigned short port; |
2fc26981 | 224 | struct fio_file *f; |
b5af8293 | 225 | char host[64], buf[128]; |
af52b345 | 226 | unsigned int i; |
ed92ac0c | 227 | char *sep; |
af52b345 | 228 | int ret; |
ed92ac0c | 229 | |
7a6499da JA |
230 | if (!td->total_file_size) { |
231 | log_err("fio: need size= set\n"); | |
232 | return 1; | |
233 | } | |
234 | ||
413dd459 | 235 | if (td_rw(td)) { |
ed92ac0c JA |
236 | log_err("fio: network connections must be read OR write\n"); |
237 | return 1; | |
238 | } | |
ed92ac0c JA |
239 | |
240 | strcpy(buf, td->filename); | |
241 | ||
242 | sep = strchr(buf, ':'); | |
243 | if (!sep) { | |
244 | log_err("fio: bad network host:port <<%s>>\n", td->filename); | |
245 | return 1; | |
246 | } | |
247 | ||
248 | *sep = '\0'; | |
249 | sep++; | |
250 | strcpy(host, buf); | |
e01547d2 | 251 | port = atoi(sep); |
ed92ac0c | 252 | |
413dd459 | 253 | if (td_read(td)) { |
b5af8293 | 254 | nd->send_to_net = 0; |
ed92ac0c JA |
255 | ret = fio_netio_setup_listen(td, port); |
256 | } else { | |
b5af8293 | 257 | nd->send_to_net = 1; |
ed92ac0c JA |
258 | ret = fio_netio_setup_connect(td, host, port); |
259 | } | |
260 | ||
2fc26981 JA |
261 | if (ret) |
262 | return ret; | |
263 | ||
264 | td->io_size = td->total_file_size; | |
265 | td->total_io_size = td->io_size; | |
266 | ||
267 | for_each_file(td, f, i) { | |
268 | f->file_size = td->total_file_size / td->nr_files; | |
269 | f->real_file_size = f->file_size; | |
ed92ac0c JA |
270 | } |
271 | ||
2fc26981 | 272 | return 0; |
ed92ac0c JA |
273 | } |
274 | ||
b5af8293 | 275 | static void fio_netio_cleanup(struct thread_data *td) |
9bec88e1 | 276 | { |
b5af8293 JA |
277 | struct netio_data *nd = td->io_ops->data; |
278 | ||
279 | if (nd) { | |
280 | free(nd); | |
281 | td->io_ops->data = NULL; | |
282 | } | |
283 | } | |
284 | ||
285 | static int fio_netio_setup(struct thread_data *td) | |
286 | { | |
287 | struct netio_data *nd = malloc(sizeof(*nd)); | |
288 | ||
289 | memset(nd, 0, sizeof(*nd)); | |
290 | nd->listenfd = -1; | |
291 | td->io_ops->data = nd; | |
9bec88e1 JA |
292 | return 0; |
293 | } | |
294 | ||
ed92ac0c JA |
295 | static struct ioengine_ops ioengine = { |
296 | .name = "net", | |
297 | .version = FIO_IOOPS_VERSION, | |
ed92ac0c JA |
298 | .prep = fio_netio_prep, |
299 | .queue = fio_netio_queue, | |
ed92ac0c | 300 | .setup = fio_netio_setup, |
9bec88e1 | 301 | .init = fio_netio_init, |
b5af8293 JA |
302 | .cleanup = fio_netio_cleanup, |
303 | .open_file = fio_netio_open_file, | |
304 | .close_file = generic_close_file, | |
305 | .flags = FIO_SYNCIO | FIO_DISKLESSIO, | |
ed92ac0c JA |
306 | }; |
307 | ||
308 | static void fio_init fio_netio_register(void) | |
309 | { | |
310 | register_ioengine(&ioengine); | |
311 | } | |
312 | ||
313 | static void fio_exit fio_netio_unregister(void) | |
314 | { | |
315 | unregister_ioengine(&ioengine); | |
316 | } |