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 | 65 | while (len) { |
f657a2fb | 66 | int ret = splice(f->fd, NULL, nd->pipes[1], NULL, len, 0); |
9cce02e8 JA |
67 | |
68 | if (ret < 0) { | |
69 | if (!bytes) | |
70 | bytes = ret; | |
71 | ||
72 | break; | |
73 | } else if (!ret) | |
74 | break; | |
75 | ||
76 | bytes += ret; | |
f657a2fb | 77 | len -= ret; |
9cce02e8 JA |
78 | } |
79 | ||
80 | return bytes; | |
81 | } | |
82 | ||
83 | /* | |
84 | * Transmit 'len' bytes from the internal pipe | |
85 | */ | |
86 | static int splice_out(struct thread_data *td, struct io_u *io_u, | |
87 | unsigned int len) | |
88 | { | |
89 | struct netio_data *nd = td->io_ops->data; | |
90 | struct fio_file *f = io_u->file; | |
91 | int bytes = 0; | |
92 | ||
93 | while (len) { | |
94 | int ret = splice(nd->pipes[0], NULL, f->fd, NULL, len, 0); | |
95 | ||
96 | if (ret < 0) { | |
97 | if (!bytes) | |
98 | bytes = ret; | |
99 | ||
100 | break; | |
101 | } else if (!ret) | |
102 | break; | |
103 | ||
104 | bytes += ret; | |
105 | len -= ret; | |
106 | } | |
107 | ||
108 | return bytes; | |
109 | } | |
110 | ||
111 | /* | |
112 | * vmsplice() pipe to io_u buffer | |
113 | */ | |
114 | static int vmsplice_io_u_out(struct thread_data *td, struct io_u *io_u, | |
115 | unsigned int len) | |
116 | { | |
117 | struct netio_data *nd = td->io_ops->data; | |
118 | struct iovec iov = { | |
119 | .iov_base = io_u->xfer_buf, | |
120 | .iov_len = len, | |
121 | }; | |
122 | int bytes = 0; | |
123 | ||
124 | while (iov.iov_len) { | |
4d94c275 | 125 | int ret = vmsplice(nd->pipes[0], &iov, 1, SPLICE_F_MOVE); |
9cce02e8 JA |
126 | |
127 | if (ret < 0) { | |
128 | if (!bytes) | |
129 | bytes = ret; | |
130 | break; | |
131 | } else if (!ret) | |
132 | break; | |
133 | ||
134 | iov.iov_len -= ret; | |
f657a2fb | 135 | bytes += ret; |
9cce02e8 JA |
136 | if (iov.iov_len) |
137 | iov.iov_base += ret; | |
138 | } | |
139 | ||
140 | return bytes; | |
141 | } | |
142 | ||
143 | /* | |
144 | * vmsplice() io_u to pipe | |
145 | */ | |
146 | static int vmsplice_io_u_in(struct thread_data *td, struct io_u *io_u) | |
147 | { | |
148 | struct netio_data *nd = td->io_ops->data; | |
149 | struct iovec iov = { | |
150 | .iov_base = io_u->xfer_buf, | |
151 | .iov_len = io_u->xfer_buflen, | |
152 | }; | |
153 | unsigned int bytes = 0; | |
154 | ||
155 | while (iov.iov_len) { | |
4d94c275 | 156 | int ret = vmsplice(nd->pipes[1], &iov, 1, SPLICE_F_MOVE); |
9cce02e8 JA |
157 | |
158 | if (ret < 0) | |
159 | return -1; | |
160 | else if (!ret) | |
161 | return bytes; | |
162 | ||
163 | iov.iov_len -= ret; | |
164 | bytes += ret; | |
165 | if (iov.iov_len) | |
166 | iov.iov_base += ret; | |
167 | } | |
ed92ac0c | 168 | |
9cce02e8 JA |
169 | return bytes; |
170 | } | |
171 | ||
172 | static int fio_netio_splice_in(struct thread_data *td, struct io_u *io_u) | |
173 | { | |
174 | int ret; | |
175 | ||
176 | ret = splice_in(td, io_u); | |
177 | if (ret <= 0) | |
178 | return ret; | |
179 | ||
180 | return vmsplice_io_u_out(td, io_u, ret); | |
181 | } | |
182 | ||
183 | static int fio_netio_splice_out(struct thread_data *td, struct io_u *io_u) | |
184 | { | |
185 | int ret; | |
186 | ||
187 | ret = vmsplice_io_u_in(td, io_u); | |
188 | if (ret <= 0) | |
189 | return ret; | |
190 | ||
191 | return splice_out(td, io_u, ret); | |
192 | } | |
193 | ||
194 | static int fio_netio_send(struct thread_data *td, struct io_u *io_u) | |
195 | { | |
196 | int flags = 0; | |
197 | ||
198 | /* | |
199 | * if we are going to write more, set MSG_MORE | |
200 | */ | |
201 | if (td->this_io_bytes[DDIR_WRITE] + io_u->xfer_buflen < td->o.size) | |
202 | flags = MSG_MORE; | |
203 | ||
204 | return send(io_u->file->fd, io_u->xfer_buf, io_u->xfer_buflen, flags); | |
205 | } | |
206 | ||
207 | static int fio_netio_recv(struct io_u *io_u) | |
208 | { | |
209 | int flags = MSG_WAITALL; | |
210 | ||
211 | return recv(io_u->file->fd, io_u->xfer_buf, io_u->xfer_buflen, flags); | |
212 | } | |
213 | ||
214 | static int fio_netio_queue(struct thread_data *td, struct io_u *io_u) | |
215 | { | |
216 | struct netio_data *nd = td->io_ops->data; | |
217 | int ret; | |
218 | ||
219 | if (io_u->ddir == DDIR_WRITE) { | |
220 | if (nd->use_splice) | |
221 | ret = fio_netio_splice_out(td, io_u); | |
222 | else | |
223 | ret = fio_netio_send(td, io_u); | |
d4f12dd0 | 224 | } else if (io_u->ddir == DDIR_READ) { |
9cce02e8 JA |
225 | if (nd->use_splice) |
226 | ret = fio_netio_splice_in(td, io_u); | |
227 | else | |
228 | ret = fio_netio_recv(io_u); | |
d4f12dd0 | 229 | } else |
7a6499da | 230 | ret = 0; /* must be a SYNC */ |
ed92ac0c | 231 | |
cec6b55d | 232 | if (ret != (int) io_u->xfer_buflen) { |
22819ec2 | 233 | if (ret >= 0) { |
cec6b55d JA |
234 | io_u->resid = io_u->xfer_buflen - ret; |
235 | io_u->error = 0; | |
36167d82 | 236 | return FIO_Q_COMPLETED; |
ed92ac0c JA |
237 | } else |
238 | io_u->error = errno; | |
239 | } | |
240 | ||
36167d82 | 241 | if (io_u->error) |
e1161c32 | 242 | td_verror(td, io_u->error, "xfer"); |
ed92ac0c | 243 | |
36167d82 | 244 | return FIO_Q_COMPLETED; |
ed92ac0c JA |
245 | } |
246 | ||
b5af8293 | 247 | static int fio_netio_connect(struct thread_data *td, struct fio_file *f) |
ed92ac0c | 248 | { |
b5af8293 | 249 | struct netio_data *nd = td->io_ops->data; |
ed92ac0c | 250 | |
b5af8293 JA |
251 | f->fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); |
252 | if (f->fd < 0) { | |
253 | td_verror(td, errno, "socket"); | |
254 | return 1; | |
ed92ac0c JA |
255 | } |
256 | ||
b5af8293 JA |
257 | if (connect(f->fd, (struct sockaddr *) &nd->addr, sizeof(nd->addr)) < 0) { |
258 | td_verror(td, errno, "connect"); | |
259 | return 1; | |
ed92ac0c JA |
260 | } |
261 | ||
262 | return 0; | |
ed92ac0c JA |
263 | } |
264 | ||
b5af8293 | 265 | static int fio_netio_accept(struct thread_data *td, struct fio_file *f) |
5fdd124a | 266 | { |
b5af8293 JA |
267 | struct netio_data *nd = td->io_ops->data; |
268 | socklen_t socklen = sizeof(nd->addr); | |
5fdd124a | 269 | struct pollfd pfd; |
b5af8293 | 270 | int ret; |
5fdd124a | 271 | |
6d86144d | 272 | log_info("fio: waiting for connection\n"); |
5fdd124a JA |
273 | |
274 | /* | |
275 | * Accept loop. poll for incoming events, accept them. Repeat until we | |
276 | * have all connections. | |
277 | */ | |
b5af8293 JA |
278 | while (!td->terminate) { |
279 | pfd.fd = nd->listenfd; | |
5fdd124a JA |
280 | pfd.events = POLLIN; |
281 | ||
282 | ret = poll(&pfd, 1, -1); | |
283 | if (ret < 0) { | |
284 | if (errno == EINTR) | |
285 | continue; | |
286 | ||
e1161c32 | 287 | td_verror(td, errno, "poll"); |
5fdd124a JA |
288 | break; |
289 | } else if (!ret) | |
290 | continue; | |
291 | ||
0c09442b JA |
292 | /* |
293 | * should be impossible | |
294 | */ | |
295 | if (!(pfd.revents & POLLIN)) | |
296 | continue; | |
297 | ||
b5af8293 JA |
298 | f->fd = accept(nd->listenfd, (struct sockaddr *) &nd->addr, &socklen); |
299 | if (f->fd < 0) { | |
300 | td_verror(td, errno, "accept"); | |
301 | return 1; | |
302 | } | |
303 | break; | |
304 | } | |
5fdd124a | 305 | |
b5af8293 JA |
306 | return 0; |
307 | } | |
308 | ||
309 | ||
310 | static int fio_netio_open_file(struct thread_data *td, struct fio_file *f) | |
311 | { | |
312 | if (td_read(td)) | |
313 | return fio_netio_accept(td, f); | |
314 | else | |
315 | return fio_netio_connect(td, f); | |
316 | } | |
317 | ||
318 | static int fio_netio_setup_connect(struct thread_data *td, const char *host, | |
319 | unsigned short port) | |
320 | { | |
321 | struct netio_data *nd = td->io_ops->data; | |
322 | ||
323 | nd->addr.sin_family = AF_INET; | |
324 | nd->addr.sin_port = htons(port); | |
325 | ||
326 | if (inet_aton(host, &nd->addr.sin_addr) != 1) { | |
327 | struct hostent *hent; | |
328 | ||
329 | hent = gethostbyname(host); | |
330 | if (!hent) { | |
331 | td_verror(td, errno, "gethostbyname"); | |
332 | return 1; | |
5fdd124a | 333 | } |
b5af8293 JA |
334 | |
335 | memcpy(&nd->addr.sin_addr, hent->h_addr, 4); | |
5fdd124a JA |
336 | } |
337 | ||
338 | return 0; | |
339 | } | |
340 | ||
b5af8293 | 341 | static int fio_netio_setup_listen(struct thread_data *td, short port) |
ed92ac0c | 342 | { |
b5af8293 | 343 | struct netio_data *nd = td->io_ops->data; |
5fdd124a | 344 | int fd, opt; |
ed92ac0c | 345 | |
6bedbfaf | 346 | fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); |
ed92ac0c | 347 | if (fd < 0) { |
e1161c32 | 348 | td_verror(td, errno, "socket"); |
ed92ac0c JA |
349 | return 1; |
350 | } | |
351 | ||
352 | opt = 1; | |
353 | if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) { | |
e1161c32 | 354 | td_verror(td, errno, "setsockopt"); |
ed92ac0c JA |
355 | return 1; |
356 | } | |
6bedbfaf JA |
357 | #ifdef SO_REUSEPORT |
358 | if (setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) { | |
e1161c32 | 359 | td_verror(td, errno, "setsockopt"); |
6bedbfaf JA |
360 | return 1; |
361 | } | |
362 | #endif | |
ed92ac0c | 363 | |
b5af8293 JA |
364 | nd->addr.sin_family = AF_INET; |
365 | nd->addr.sin_addr.s_addr = htonl(INADDR_ANY); | |
366 | nd->addr.sin_port = htons(port); | |
ed92ac0c | 367 | |
b5af8293 | 368 | if (bind(fd, (struct sockaddr *) &nd->addr, sizeof(nd->addr)) < 0) { |
e1161c32 | 369 | td_verror(td, errno, "bind"); |
ed92ac0c JA |
370 | return 1; |
371 | } | |
372 | if (listen(fd, 1) < 0) { | |
e1161c32 | 373 | td_verror(td, errno, "listen"); |
ed92ac0c JA |
374 | return 1; |
375 | } | |
376 | ||
b5af8293 JA |
377 | nd->listenfd = fd; |
378 | return 0; | |
ed92ac0c JA |
379 | } |
380 | ||
9bec88e1 | 381 | static int fio_netio_init(struct thread_data *td) |
ed92ac0c | 382 | { |
b5af8293 | 383 | struct netio_data *nd = td->io_ops->data; |
e01547d2 | 384 | unsigned short port; |
b5af8293 | 385 | char host[64], buf[128]; |
ed92ac0c | 386 | char *sep; |
af52b345 | 387 | int ret; |
ed92ac0c | 388 | |
413dd459 | 389 | if (td_rw(td)) { |
ed92ac0c JA |
390 | log_err("fio: network connections must be read OR write\n"); |
391 | return 1; | |
392 | } | |
16d55aae JA |
393 | if (td_random(td)) { |
394 | log_err("fio: network IO can't be random\n"); | |
395 | return 1; | |
396 | } | |
ed92ac0c | 397 | |
2dc1bbeb | 398 | strcpy(buf, td->o.filename); |
ed92ac0c | 399 | |
9f9214f2 | 400 | sep = strchr(buf, '/'); |
ed92ac0c | 401 | if (!sep) { |
2dc1bbeb | 402 | log_err("fio: bad network host/port <<%s>>\n", td->o.filename); |
ed92ac0c JA |
403 | return 1; |
404 | } | |
405 | ||
406 | *sep = '\0'; | |
407 | sep++; | |
408 | strcpy(host, buf); | |
e01547d2 | 409 | port = atoi(sep); |
ed92ac0c | 410 | |
413dd459 | 411 | if (td_read(td)) { |
b5af8293 | 412 | nd->send_to_net = 0; |
ed92ac0c JA |
413 | ret = fio_netio_setup_listen(td, port); |
414 | } else { | |
b5af8293 | 415 | nd->send_to_net = 1; |
ed92ac0c JA |
416 | ret = fio_netio_setup_connect(td, host, port); |
417 | } | |
418 | ||
7bb48f84 | 419 | return ret; |
ed92ac0c JA |
420 | } |
421 | ||
b5af8293 | 422 | static void fio_netio_cleanup(struct thread_data *td) |
9bec88e1 | 423 | { |
b5af8293 JA |
424 | struct netio_data *nd = td->io_ops->data; |
425 | ||
426 | if (nd) { | |
427 | free(nd); | |
428 | td->io_ops->data = NULL; | |
429 | } | |
430 | } | |
431 | ||
432 | static int fio_netio_setup(struct thread_data *td) | |
433 | { | |
7bb48f84 | 434 | struct netio_data *nd; |
7bb48f84 JA |
435 | |
436 | if (!td->io_ops->data) { | |
437 | nd = malloc(sizeof(*nd));; | |
438 | ||
439 | memset(nd, 0, sizeof(*nd)); | |
440 | nd->listenfd = -1; | |
441 | td->io_ops->data = nd; | |
7bb48f84 | 442 | } |
b5af8293 | 443 | |
9bec88e1 JA |
444 | return 0; |
445 | } | |
446 | ||
9cce02e8 JA |
447 | static int fio_netio_setup_splice(struct thread_data *td) |
448 | { | |
449 | struct netio_data *nd; | |
450 | ||
451 | fio_netio_setup(td); | |
452 | ||
453 | nd = td->io_ops->data; | |
454 | if (nd) { | |
455 | if (pipe(nd->pipes) < 0) | |
456 | return 1; | |
457 | ||
458 | nd->use_splice = 1; | |
459 | return 0; | |
460 | } | |
461 | ||
462 | return 1; | |
463 | } | |
464 | ||
465 | static struct ioengine_ops ioengine_rw = { | |
ed92ac0c JA |
466 | .name = "net", |
467 | .version = FIO_IOOPS_VERSION, | |
ed92ac0c JA |
468 | .prep = fio_netio_prep, |
469 | .queue = fio_netio_queue, | |
ed92ac0c | 470 | .setup = fio_netio_setup, |
9bec88e1 | 471 | .init = fio_netio_init, |
b5af8293 JA |
472 | .cleanup = fio_netio_cleanup, |
473 | .open_file = fio_netio_open_file, | |
474 | .close_file = generic_close_file, | |
475 | .flags = FIO_SYNCIO | FIO_DISKLESSIO, | |
ed92ac0c JA |
476 | }; |
477 | ||
9cce02e8 JA |
478 | static struct ioengine_ops ioengine_splice = { |
479 | .name = "netsplice", | |
480 | .version = FIO_IOOPS_VERSION, | |
481 | .prep = fio_netio_prep, | |
482 | .queue = fio_netio_queue, | |
483 | .setup = fio_netio_setup_splice, | |
484 | .init = fio_netio_init, | |
485 | .cleanup = fio_netio_cleanup, | |
486 | .open_file = fio_netio_open_file, | |
487 | .close_file = generic_close_file, | |
488 | .flags = FIO_SYNCIO | FIO_DISKLESSIO, | |
489 | }; | |
490 | ||
ed92ac0c JA |
491 | static void fio_init fio_netio_register(void) |
492 | { | |
9cce02e8 JA |
493 | register_ioengine(&ioengine_rw); |
494 | register_ioengine(&ioengine_splice); | |
ed92ac0c JA |
495 | } |
496 | ||
497 | static void fio_exit fio_netio_unregister(void) | |
498 | { | |
9cce02e8 JA |
499 | unregister_ioengine(&ioengine_rw); |
500 | unregister_ioengine(&ioengine_splice); | |
ed92ac0c | 501 | } |