Commit | Line | Data |
---|---|---|
ed92ac0c | 1 | /* |
da751ca9 JA |
2 | * net engine |
3 | * | |
4 | * IO engine that reads/writes to/from sockets. | |
5 | * | |
ed92ac0c JA |
6 | */ |
7 | #include <stdio.h> | |
8 | #include <stdlib.h> | |
9 | #include <unistd.h> | |
10 | #include <errno.h> | |
11 | #include <assert.h> | |
12 | #include <netinet/in.h> | |
13 | #include <arpa/inet.h> | |
14 | #include <netdb.h> | |
5fdd124a | 15 | #include <sys/poll.h> |
ed92ac0c JA |
16 | |
17 | #include "../fio.h" | |
ed92ac0c | 18 | |
b5af8293 JA |
19 | struct netio_data { |
20 | int listenfd; | |
21 | int send_to_net; | |
9cce02e8 JA |
22 | int use_splice; |
23 | int pipes[2]; | |
b5af8293 JA |
24 | char host[64]; |
25 | struct sockaddr_in addr; | |
26 | }; | |
ed92ac0c JA |
27 | |
28 | static int fio_netio_prep(struct thread_data *td, struct io_u *io_u) | |
29 | { | |
b5af8293 | 30 | struct netio_data *nd = td->io_ops->data; |
ed92ac0c JA |
31 | struct fio_file *f = io_u->file; |
32 | ||
7a6499da JA |
33 | /* |
34 | * Make sure we don't see spurious reads to a receiver, and vice versa | |
35 | */ | |
b5af8293 JA |
36 | if ((nd->send_to_net && io_u->ddir == DDIR_READ) || |
37 | (!nd->send_to_net && io_u->ddir == DDIR_WRITE)) { | |
e1161c32 | 38 | td_verror(td, EINVAL, "bad direction"); |
7a6499da | 39 | return 1; |
ed92ac0c | 40 | } |
7a6499da | 41 | |
ed92ac0c JA |
42 | if (io_u->ddir == DDIR_SYNC) |
43 | return 0; | |
44 | if (io_u->offset == f->last_completed_pos) | |
45 | return 0; | |
46 | ||
e01547d2 JA |
47 | /* |
48 | * If offset is different from last end position, it's a seek. | |
49 | * As network io is purely sequential, we don't allow seeks. | |
50 | */ | |
e1161c32 | 51 | td_verror(td, EINVAL, "cannot seek"); |
ed92ac0c JA |
52 | return 1; |
53 | } | |
54 | ||
9cce02e8 JA |
55 | /* |
56 | * Receive bytes from a socket and fill them into the internal pipe | |
57 | */ | |
58 | static int splice_in(struct thread_data *td, struct io_u *io_u) | |
ed92ac0c | 59 | { |
9cce02e8 JA |
60 | struct netio_data *nd = td->io_ops->data; |
61 | unsigned int len = io_u->xfer_buflen; | |
ed92ac0c | 62 | struct fio_file *f = io_u->file; |
9cce02e8 | 63 | int bytes = 0; |
7a6499da | 64 | |
9cce02e8 JA |
65 | while (len) { |
66 | int ret = splice(nd->pipes[1], NULL, f->fd, NULL, len, 0); | |
67 | ||
68 | if (ret < 0) { | |
69 | if (!bytes) | |
70 | bytes = ret; | |
71 | ||
72 | break; | |
73 | } else if (!ret) | |
74 | break; | |
75 | ||
76 | bytes += ret; | |
77 | } | |
78 | ||
79 | return bytes; | |
80 | } | |
81 | ||
82 | /* | |
83 | * Transmit 'len' bytes from the internal pipe | |
84 | */ | |
85 | static int splice_out(struct thread_data *td, struct io_u *io_u, | |
86 | unsigned int len) | |
87 | { | |
88 | struct netio_data *nd = td->io_ops->data; | |
89 | struct fio_file *f = io_u->file; | |
90 | int bytes = 0; | |
91 | ||
92 | while (len) { | |
93 | int ret = splice(nd->pipes[0], NULL, f->fd, NULL, len, 0); | |
94 | ||
95 | if (ret < 0) { | |
96 | if (!bytes) | |
97 | bytes = ret; | |
98 | ||
99 | break; | |
100 | } else if (!ret) | |
101 | break; | |
102 | ||
103 | bytes += ret; | |
104 | len -= ret; | |
105 | } | |
106 | ||
107 | return bytes; | |
108 | } | |
109 | ||
110 | /* | |
111 | * vmsplice() pipe to io_u buffer | |
112 | */ | |
113 | static int vmsplice_io_u_out(struct thread_data *td, struct io_u *io_u, | |
114 | unsigned int len) | |
115 | { | |
116 | struct netio_data *nd = td->io_ops->data; | |
117 | struct iovec iov = { | |
118 | .iov_base = io_u->xfer_buf, | |
119 | .iov_len = len, | |
120 | }; | |
121 | int bytes = 0; | |
122 | ||
123 | while (iov.iov_len) { | |
124 | int ret = vmsplice(nd->pipes[0], &iov, 1, 0); | |
125 | ||
126 | if (ret < 0) { | |
127 | if (!bytes) | |
128 | bytes = ret; | |
129 | break; | |
130 | } else if (!ret) | |
131 | break; | |
132 | ||
133 | iov.iov_len -= ret; | |
134 | if (iov.iov_len) | |
135 | iov.iov_base += ret; | |
136 | } | |
137 | ||
138 | return bytes; | |
139 | } | |
140 | ||
141 | /* | |
142 | * vmsplice() io_u to pipe | |
143 | */ | |
144 | static int vmsplice_io_u_in(struct thread_data *td, struct io_u *io_u) | |
145 | { | |
146 | struct netio_data *nd = td->io_ops->data; | |
147 | struct iovec iov = { | |
148 | .iov_base = io_u->xfer_buf, | |
149 | .iov_len = io_u->xfer_buflen, | |
150 | }; | |
151 | unsigned int bytes = 0; | |
152 | ||
153 | while (iov.iov_len) { | |
154 | int ret = vmsplice(nd->pipes[1], &iov, 1, 0); | |
155 | ||
156 | if (ret < 0) | |
157 | return -1; | |
158 | else if (!ret) | |
159 | return bytes; | |
160 | ||
161 | iov.iov_len -= ret; | |
162 | bytes += ret; | |
163 | if (iov.iov_len) | |
164 | iov.iov_base += ret; | |
165 | } | |
ed92ac0c | 166 | |
9cce02e8 JA |
167 | return bytes; |
168 | } | |
169 | ||
170 | static int fio_netio_splice_in(struct thread_data *td, struct io_u *io_u) | |
171 | { | |
172 | int ret; | |
173 | ||
174 | ret = splice_in(td, io_u); | |
175 | if (ret <= 0) | |
176 | return ret; | |
177 | ||
178 | return vmsplice_io_u_out(td, io_u, ret); | |
179 | } | |
180 | ||
181 | static int fio_netio_splice_out(struct thread_data *td, struct io_u *io_u) | |
182 | { | |
183 | int ret; | |
184 | ||
185 | ret = vmsplice_io_u_in(td, io_u); | |
186 | if (ret <= 0) | |
187 | return ret; | |
188 | ||
189 | return splice_out(td, io_u, ret); | |
190 | } | |
191 | ||
192 | static int fio_netio_send(struct thread_data *td, struct io_u *io_u) | |
193 | { | |
194 | int flags = 0; | |
195 | ||
196 | /* | |
197 | * if we are going to write more, set MSG_MORE | |
198 | */ | |
199 | if (td->this_io_bytes[DDIR_WRITE] + io_u->xfer_buflen < td->o.size) | |
200 | flags = MSG_MORE; | |
201 | ||
202 | return send(io_u->file->fd, io_u->xfer_buf, io_u->xfer_buflen, flags); | |
203 | } | |
204 | ||
205 | static int fio_netio_recv(struct io_u *io_u) | |
206 | { | |
207 | int flags = MSG_WAITALL; | |
208 | ||
209 | return recv(io_u->file->fd, io_u->xfer_buf, io_u->xfer_buflen, flags); | |
210 | } | |
211 | ||
212 | static int fio_netio_queue(struct thread_data *td, struct io_u *io_u) | |
213 | { | |
214 | struct netio_data *nd = td->io_ops->data; | |
215 | int ret; | |
216 | ||
217 | if (io_u->ddir == DDIR_WRITE) { | |
218 | if (nd->use_splice) | |
219 | ret = fio_netio_splice_out(td, io_u); | |
220 | else | |
221 | ret = fio_netio_send(td, io_u); | |
d4f12dd0 | 222 | } else if (io_u->ddir == DDIR_READ) { |
9cce02e8 JA |
223 | if (nd->use_splice) |
224 | ret = fio_netio_splice_in(td, io_u); | |
225 | else | |
226 | ret = fio_netio_recv(io_u); | |
d4f12dd0 | 227 | } else |
7a6499da | 228 | ret = 0; /* must be a SYNC */ |
ed92ac0c | 229 | |
cec6b55d | 230 | if (ret != (int) io_u->xfer_buflen) { |
22819ec2 | 231 | if (ret >= 0) { |
cec6b55d JA |
232 | io_u->resid = io_u->xfer_buflen - ret; |
233 | io_u->error = 0; | |
36167d82 | 234 | return FIO_Q_COMPLETED; |
ed92ac0c JA |
235 | } else |
236 | io_u->error = errno; | |
237 | } | |
238 | ||
36167d82 | 239 | if (io_u->error) |
e1161c32 | 240 | td_verror(td, io_u->error, "xfer"); |
ed92ac0c | 241 | |
36167d82 | 242 | return FIO_Q_COMPLETED; |
ed92ac0c JA |
243 | } |
244 | ||
b5af8293 | 245 | static int fio_netio_connect(struct thread_data *td, struct fio_file *f) |
ed92ac0c | 246 | { |
b5af8293 | 247 | struct netio_data *nd = td->io_ops->data; |
ed92ac0c | 248 | |
b5af8293 JA |
249 | f->fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); |
250 | if (f->fd < 0) { | |
251 | td_verror(td, errno, "socket"); | |
252 | return 1; | |
ed92ac0c JA |
253 | } |
254 | ||
b5af8293 JA |
255 | if (connect(f->fd, (struct sockaddr *) &nd->addr, sizeof(nd->addr)) < 0) { |
256 | td_verror(td, errno, "connect"); | |
257 | return 1; | |
ed92ac0c JA |
258 | } |
259 | ||
260 | return 0; | |
ed92ac0c JA |
261 | } |
262 | ||
b5af8293 | 263 | static int fio_netio_accept(struct thread_data *td, struct fio_file *f) |
5fdd124a | 264 | { |
b5af8293 JA |
265 | struct netio_data *nd = td->io_ops->data; |
266 | socklen_t socklen = sizeof(nd->addr); | |
5fdd124a | 267 | struct pollfd pfd; |
b5af8293 | 268 | int ret; |
5fdd124a | 269 | |
6d86144d | 270 | log_info("fio: waiting for connection\n"); |
5fdd124a JA |
271 | |
272 | /* | |
273 | * Accept loop. poll for incoming events, accept them. Repeat until we | |
274 | * have all connections. | |
275 | */ | |
b5af8293 JA |
276 | while (!td->terminate) { |
277 | pfd.fd = nd->listenfd; | |
5fdd124a JA |
278 | pfd.events = POLLIN; |
279 | ||
280 | ret = poll(&pfd, 1, -1); | |
281 | if (ret < 0) { | |
282 | if (errno == EINTR) | |
283 | continue; | |
284 | ||
e1161c32 | 285 | td_verror(td, errno, "poll"); |
5fdd124a JA |
286 | break; |
287 | } else if (!ret) | |
288 | continue; | |
289 | ||
0c09442b JA |
290 | /* |
291 | * should be impossible | |
292 | */ | |
293 | if (!(pfd.revents & POLLIN)) | |
294 | continue; | |
295 | ||
b5af8293 JA |
296 | f->fd = accept(nd->listenfd, (struct sockaddr *) &nd->addr, &socklen); |
297 | if (f->fd < 0) { | |
298 | td_verror(td, errno, "accept"); | |
299 | return 1; | |
300 | } | |
301 | break; | |
302 | } | |
5fdd124a | 303 | |
b5af8293 JA |
304 | return 0; |
305 | } | |
306 | ||
307 | ||
308 | static int fio_netio_open_file(struct thread_data *td, struct fio_file *f) | |
309 | { | |
310 | if (td_read(td)) | |
311 | return fio_netio_accept(td, f); | |
312 | else | |
313 | return fio_netio_connect(td, f); | |
314 | } | |
315 | ||
316 | static int fio_netio_setup_connect(struct thread_data *td, const char *host, | |
317 | unsigned short port) | |
318 | { | |
319 | struct netio_data *nd = td->io_ops->data; | |
320 | ||
321 | nd->addr.sin_family = AF_INET; | |
322 | nd->addr.sin_port = htons(port); | |
323 | ||
324 | if (inet_aton(host, &nd->addr.sin_addr) != 1) { | |
325 | struct hostent *hent; | |
326 | ||
327 | hent = gethostbyname(host); | |
328 | if (!hent) { | |
329 | td_verror(td, errno, "gethostbyname"); | |
330 | return 1; | |
5fdd124a | 331 | } |
b5af8293 JA |
332 | |
333 | memcpy(&nd->addr.sin_addr, hent->h_addr, 4); | |
5fdd124a JA |
334 | } |
335 | ||
336 | return 0; | |
337 | } | |
338 | ||
b5af8293 | 339 | static int fio_netio_setup_listen(struct thread_data *td, short port) |
ed92ac0c | 340 | { |
b5af8293 | 341 | struct netio_data *nd = td->io_ops->data; |
5fdd124a | 342 | int fd, opt; |
ed92ac0c | 343 | |
6bedbfaf | 344 | fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); |
ed92ac0c | 345 | if (fd < 0) { |
e1161c32 | 346 | td_verror(td, errno, "socket"); |
ed92ac0c JA |
347 | return 1; |
348 | } | |
349 | ||
350 | opt = 1; | |
351 | if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) { | |
e1161c32 | 352 | td_verror(td, errno, "setsockopt"); |
ed92ac0c JA |
353 | return 1; |
354 | } | |
6bedbfaf JA |
355 | #ifdef SO_REUSEPORT |
356 | if (setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) { | |
e1161c32 | 357 | td_verror(td, errno, "setsockopt"); |
6bedbfaf JA |
358 | return 1; |
359 | } | |
360 | #endif | |
ed92ac0c | 361 | |
b5af8293 JA |
362 | nd->addr.sin_family = AF_INET; |
363 | nd->addr.sin_addr.s_addr = htonl(INADDR_ANY); | |
364 | nd->addr.sin_port = htons(port); | |
ed92ac0c | 365 | |
b5af8293 | 366 | if (bind(fd, (struct sockaddr *) &nd->addr, sizeof(nd->addr)) < 0) { |
e1161c32 | 367 | td_verror(td, errno, "bind"); |
ed92ac0c JA |
368 | return 1; |
369 | } | |
370 | if (listen(fd, 1) < 0) { | |
e1161c32 | 371 | td_verror(td, errno, "listen"); |
ed92ac0c JA |
372 | return 1; |
373 | } | |
374 | ||
b5af8293 JA |
375 | nd->listenfd = fd; |
376 | return 0; | |
ed92ac0c JA |
377 | } |
378 | ||
9bec88e1 | 379 | static int fio_netio_init(struct thread_data *td) |
ed92ac0c | 380 | { |
b5af8293 | 381 | struct netio_data *nd = td->io_ops->data; |
e01547d2 | 382 | unsigned short port; |
b5af8293 | 383 | char host[64], buf[128]; |
ed92ac0c | 384 | char *sep; |
af52b345 | 385 | int ret; |
ed92ac0c | 386 | |
413dd459 | 387 | if (td_rw(td)) { |
ed92ac0c JA |
388 | log_err("fio: network connections must be read OR write\n"); |
389 | return 1; | |
390 | } | |
16d55aae JA |
391 | if (td_random(td)) { |
392 | log_err("fio: network IO can't be random\n"); | |
393 | return 1; | |
394 | } | |
ed92ac0c | 395 | |
2dc1bbeb | 396 | strcpy(buf, td->o.filename); |
ed92ac0c | 397 | |
9f9214f2 | 398 | sep = strchr(buf, '/'); |
ed92ac0c | 399 | if (!sep) { |
2dc1bbeb | 400 | log_err("fio: bad network host/port <<%s>>\n", td->o.filename); |
ed92ac0c JA |
401 | return 1; |
402 | } | |
403 | ||
404 | *sep = '\0'; | |
405 | sep++; | |
406 | strcpy(host, buf); | |
e01547d2 | 407 | port = atoi(sep); |
ed92ac0c | 408 | |
413dd459 | 409 | if (td_read(td)) { |
b5af8293 | 410 | nd->send_to_net = 0; |
ed92ac0c JA |
411 | ret = fio_netio_setup_listen(td, port); |
412 | } else { | |
b5af8293 | 413 | nd->send_to_net = 1; |
ed92ac0c JA |
414 | ret = fio_netio_setup_connect(td, host, port); |
415 | } | |
416 | ||
7bb48f84 | 417 | return ret; |
ed92ac0c JA |
418 | } |
419 | ||
b5af8293 | 420 | static void fio_netio_cleanup(struct thread_data *td) |
9bec88e1 | 421 | { |
b5af8293 JA |
422 | struct netio_data *nd = td->io_ops->data; |
423 | ||
424 | if (nd) { | |
425 | free(nd); | |
426 | td->io_ops->data = NULL; | |
427 | } | |
428 | } | |
429 | ||
430 | static int fio_netio_setup(struct thread_data *td) | |
431 | { | |
7bb48f84 | 432 | struct netio_data *nd; |
7bb48f84 JA |
433 | |
434 | if (!td->io_ops->data) { | |
435 | nd = malloc(sizeof(*nd));; | |
436 | ||
437 | memset(nd, 0, sizeof(*nd)); | |
438 | nd->listenfd = -1; | |
439 | td->io_ops->data = nd; | |
7bb48f84 | 440 | } |
b5af8293 | 441 | |
9bec88e1 JA |
442 | return 0; |
443 | } | |
444 | ||
9cce02e8 JA |
445 | static int fio_netio_setup_splice(struct thread_data *td) |
446 | { | |
447 | struct netio_data *nd; | |
448 | ||
449 | fio_netio_setup(td); | |
450 | ||
451 | nd = td->io_ops->data; | |
452 | if (nd) { | |
453 | if (pipe(nd->pipes) < 0) | |
454 | return 1; | |
455 | ||
456 | nd->use_splice = 1; | |
457 | return 0; | |
458 | } | |
459 | ||
460 | return 1; | |
461 | } | |
462 | ||
463 | static struct ioengine_ops ioengine_rw = { | |
ed92ac0c JA |
464 | .name = "net", |
465 | .version = FIO_IOOPS_VERSION, | |
ed92ac0c JA |
466 | .prep = fio_netio_prep, |
467 | .queue = fio_netio_queue, | |
ed92ac0c | 468 | .setup = fio_netio_setup, |
9bec88e1 | 469 | .init = fio_netio_init, |
b5af8293 JA |
470 | .cleanup = fio_netio_cleanup, |
471 | .open_file = fio_netio_open_file, | |
472 | .close_file = generic_close_file, | |
473 | .flags = FIO_SYNCIO | FIO_DISKLESSIO, | |
ed92ac0c JA |
474 | }; |
475 | ||
9cce02e8 JA |
476 | static struct ioengine_ops ioengine_splice = { |
477 | .name = "netsplice", | |
478 | .version = FIO_IOOPS_VERSION, | |
479 | .prep = fio_netio_prep, | |
480 | .queue = fio_netio_queue, | |
481 | .setup = fio_netio_setup_splice, | |
482 | .init = fio_netio_init, | |
483 | .cleanup = fio_netio_cleanup, | |
484 | .open_file = fio_netio_open_file, | |
485 | .close_file = generic_close_file, | |
486 | .flags = FIO_SYNCIO | FIO_DISKLESSIO, | |
487 | }; | |
488 | ||
ed92ac0c JA |
489 | static void fio_init fio_netio_register(void) |
490 | { | |
9cce02e8 JA |
491 | register_ioengine(&ioengine_rw); |
492 | register_ioengine(&ioengine_splice); | |
ed92ac0c JA |
493 | } |
494 | ||
495 | static void fio_exit fio_netio_unregister(void) | |
496 | { | |
9cce02e8 JA |
497 | unregister_ioengine(&ioengine_rw); |
498 | unregister_ioengine(&ioengine_splice); | |
ed92ac0c | 499 | } |