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 | 31 | |
7a6499da JA |
32 | /* |
33 | * Make sure we don't see spurious reads to a receiver, and vice versa | |
34 | */ | |
b5af8293 JA |
35 | if ((nd->send_to_net && io_u->ddir == DDIR_READ) || |
36 | (!nd->send_to_net && io_u->ddir == DDIR_WRITE)) { | |
e1161c32 | 37 | td_verror(td, EINVAL, "bad direction"); |
7a6499da | 38 | return 1; |
ed92ac0c | 39 | } |
7a6499da | 40 | |
f85ac25a | 41 | return 0; |
ed92ac0c JA |
42 | } |
43 | ||
5921e80c | 44 | #ifdef FIO_HAVE_SPLICE |
cd963e18 | 45 | static int splice_io_u(int fdin, int fdout, unsigned int len) |
ed92ac0c | 46 | { |
9cce02e8 | 47 | int bytes = 0; |
7a6499da | 48 | |
9cce02e8 | 49 | while (len) { |
cd963e18 | 50 | int ret = splice(fdin, NULL, fdout, NULL, len, 0); |
9cce02e8 JA |
51 | |
52 | if (ret < 0) { | |
53 | if (!bytes) | |
54 | bytes = ret; | |
55 | ||
56 | break; | |
57 | } else if (!ret) | |
58 | break; | |
59 | ||
60 | bytes += ret; | |
f657a2fb | 61 | len -= ret; |
9cce02e8 JA |
62 | } |
63 | ||
64 | return bytes; | |
65 | } | |
66 | ||
67 | /* | |
cd963e18 | 68 | * Receive bytes from a socket and fill them into the internal pipe |
9cce02e8 | 69 | */ |
cd963e18 | 70 | static int splice_in(struct thread_data *td, struct io_u *io_u) |
9cce02e8 JA |
71 | { |
72 | struct netio_data *nd = td->io_ops->data; | |
9cce02e8 | 73 | |
cd963e18 | 74 | return splice_io_u(io_u->file->fd, nd->pipes[1], io_u->xfer_buflen); |
9cce02e8 JA |
75 | } |
76 | ||
77 | /* | |
cd963e18 | 78 | * Transmit 'len' bytes from the internal pipe |
9cce02e8 | 79 | */ |
cd963e18 JA |
80 | static int splice_out(struct thread_data *td, struct io_u *io_u, |
81 | unsigned int len) | |
9cce02e8 JA |
82 | { |
83 | struct netio_data *nd = td->io_ops->data; | |
cd963e18 JA |
84 | |
85 | return splice_io_u(nd->pipes[0], io_u->file->fd, len); | |
86 | } | |
87 | ||
88 | static int vmsplice_io_u(struct io_u *io_u, int fd, unsigned int len) | |
89 | { | |
9cce02e8 JA |
90 | struct iovec iov = { |
91 | .iov_base = io_u->xfer_buf, | |
92 | .iov_len = len, | |
93 | }; | |
94 | int bytes = 0; | |
95 | ||
96 | while (iov.iov_len) { | |
cd963e18 | 97 | int ret = vmsplice(fd, &iov, 1, SPLICE_F_MOVE); |
9cce02e8 JA |
98 | |
99 | if (ret < 0) { | |
100 | if (!bytes) | |
101 | bytes = ret; | |
102 | break; | |
103 | } else if (!ret) | |
104 | break; | |
105 | ||
106 | iov.iov_len -= ret; | |
cd963e18 | 107 | iov.iov_base += ret; |
f657a2fb | 108 | bytes += ret; |
9cce02e8 JA |
109 | } |
110 | ||
111 | return bytes; | |
cd963e18 | 112 | |
9cce02e8 JA |
113 | } |
114 | ||
115 | /* | |
cd963e18 | 116 | * vmsplice() pipe to io_u buffer |
9cce02e8 | 117 | */ |
cd963e18 JA |
118 | static int vmsplice_io_u_out(struct thread_data *td, struct io_u *io_u, |
119 | unsigned int len) | |
9cce02e8 JA |
120 | { |
121 | struct netio_data *nd = td->io_ops->data; | |
9cce02e8 | 122 | |
cd963e18 JA |
123 | return vmsplice_io_u(io_u, nd->pipes[0], len); |
124 | } | |
9cce02e8 | 125 | |
cd963e18 JA |
126 | /* |
127 | * vmsplice() io_u to pipe | |
128 | */ | |
129 | static int vmsplice_io_u_in(struct thread_data *td, struct io_u *io_u) | |
130 | { | |
131 | struct netio_data *nd = td->io_ops->data; | |
ed92ac0c | 132 | |
cd963e18 | 133 | return vmsplice_io_u(io_u, nd->pipes[1], io_u->xfer_buflen); |
9cce02e8 JA |
134 | } |
135 | ||
cd963e18 JA |
136 | /* |
137 | * splice receive - transfer socket data into a pipe using splice, then map | |
138 | * that pipe data into the io_u using vmsplice. | |
139 | */ | |
9cce02e8 JA |
140 | static int fio_netio_splice_in(struct thread_data *td, struct io_u *io_u) |
141 | { | |
142 | int ret; | |
143 | ||
144 | ret = splice_in(td, io_u); | |
cd963e18 JA |
145 | if (ret > 0) |
146 | return vmsplice_io_u_out(td, io_u, ret); | |
9cce02e8 | 147 | |
cd963e18 | 148 | return ret; |
9cce02e8 JA |
149 | } |
150 | ||
cd963e18 JA |
151 | /* |
152 | * splice transmit - map data from the io_u into a pipe by using vmsplice, | |
153 | * then transfer that pipe to a socket using splice. | |
154 | */ | |
9cce02e8 JA |
155 | static int fio_netio_splice_out(struct thread_data *td, struct io_u *io_u) |
156 | { | |
157 | int ret; | |
158 | ||
159 | ret = vmsplice_io_u_in(td, io_u); | |
cd963e18 JA |
160 | if (ret > 0) |
161 | return splice_out(td, io_u, ret); | |
9cce02e8 | 162 | |
cd963e18 | 163 | return ret; |
9cce02e8 | 164 | } |
5921e80c JA |
165 | #else |
166 | static int fio_netio_splice_in(struct thread_data *td, struct io_u *io_u) | |
167 | { | |
af8771b9 | 168 | errno = EOPNOTSUPP; |
5921e80c JA |
169 | return -1; |
170 | } | |
171 | ||
172 | static int fio_netio_splice_out(struct thread_data *td, struct io_u *io_u) | |
173 | { | |
af8771b9 | 174 | errno = EOPNOTSUPP; |
5921e80c JA |
175 | return -1; |
176 | } | |
177 | #endif | |
9cce02e8 JA |
178 | |
179 | static int fio_netio_send(struct thread_data *td, struct io_u *io_u) | |
180 | { | |
181 | int flags = 0; | |
182 | ||
183 | /* | |
184 | * if we are going to write more, set MSG_MORE | |
185 | */ | |
5921e80c | 186 | #ifdef MSG_MORE |
9cce02e8 JA |
187 | if (td->this_io_bytes[DDIR_WRITE] + io_u->xfer_buflen < td->o.size) |
188 | flags = MSG_MORE; | |
5921e80c | 189 | #endif |
9cce02e8 JA |
190 | |
191 | return send(io_u->file->fd, io_u->xfer_buf, io_u->xfer_buflen, flags); | |
192 | } | |
193 | ||
194 | static int fio_netio_recv(struct io_u *io_u) | |
195 | { | |
196 | int flags = MSG_WAITALL; | |
197 | ||
198 | return recv(io_u->file->fd, io_u->xfer_buf, io_u->xfer_buflen, flags); | |
199 | } | |
200 | ||
201 | static int fio_netio_queue(struct thread_data *td, struct io_u *io_u) | |
202 | { | |
203 | struct netio_data *nd = td->io_ops->data; | |
204 | int ret; | |
205 | ||
7101d9c2 JA |
206 | fio_ro_check(td, io_u); |
207 | ||
9cce02e8 JA |
208 | if (io_u->ddir == DDIR_WRITE) { |
209 | if (nd->use_splice) | |
210 | ret = fio_netio_splice_out(td, io_u); | |
211 | else | |
212 | ret = fio_netio_send(td, io_u); | |
d4f12dd0 | 213 | } else if (io_u->ddir == DDIR_READ) { |
9cce02e8 JA |
214 | if (nd->use_splice) |
215 | ret = fio_netio_splice_in(td, io_u); | |
216 | else | |
217 | ret = fio_netio_recv(io_u); | |
d4f12dd0 | 218 | } else |
7a6499da | 219 | ret = 0; /* must be a SYNC */ |
ed92ac0c | 220 | |
cec6b55d | 221 | if (ret != (int) io_u->xfer_buflen) { |
22819ec2 | 222 | if (ret >= 0) { |
cec6b55d JA |
223 | io_u->resid = io_u->xfer_buflen - ret; |
224 | io_u->error = 0; | |
36167d82 | 225 | return FIO_Q_COMPLETED; |
ed92ac0c JA |
226 | } else |
227 | io_u->error = errno; | |
228 | } | |
229 | ||
36167d82 | 230 | if (io_u->error) |
e1161c32 | 231 | td_verror(td, io_u->error, "xfer"); |
ed92ac0c | 232 | |
36167d82 | 233 | return FIO_Q_COMPLETED; |
ed92ac0c JA |
234 | } |
235 | ||
b5af8293 | 236 | static int fio_netio_connect(struct thread_data *td, struct fio_file *f) |
ed92ac0c | 237 | { |
b5af8293 | 238 | struct netio_data *nd = td->io_ops->data; |
ed92ac0c | 239 | |
b5af8293 JA |
240 | f->fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); |
241 | if (f->fd < 0) { | |
242 | td_verror(td, errno, "socket"); | |
243 | return 1; | |
ed92ac0c JA |
244 | } |
245 | ||
b5af8293 JA |
246 | if (connect(f->fd, (struct sockaddr *) &nd->addr, sizeof(nd->addr)) < 0) { |
247 | td_verror(td, errno, "connect"); | |
248 | return 1; | |
ed92ac0c JA |
249 | } |
250 | ||
251 | return 0; | |
ed92ac0c JA |
252 | } |
253 | ||
b5af8293 | 254 | static int fio_netio_accept(struct thread_data *td, struct fio_file *f) |
5fdd124a | 255 | { |
b5af8293 JA |
256 | struct netio_data *nd = td->io_ops->data; |
257 | socklen_t socklen = sizeof(nd->addr); | |
5fdd124a | 258 | struct pollfd pfd; |
b5af8293 | 259 | int ret; |
5fdd124a | 260 | |
6d86144d | 261 | log_info("fio: waiting for connection\n"); |
5fdd124a JA |
262 | |
263 | /* | |
264 | * Accept loop. poll for incoming events, accept them. Repeat until we | |
265 | * have all connections. | |
266 | */ | |
b5af8293 JA |
267 | while (!td->terminate) { |
268 | pfd.fd = nd->listenfd; | |
5fdd124a JA |
269 | pfd.events = POLLIN; |
270 | ||
271 | ret = poll(&pfd, 1, -1); | |
272 | if (ret < 0) { | |
273 | if (errno == EINTR) | |
274 | continue; | |
275 | ||
e1161c32 | 276 | td_verror(td, errno, "poll"); |
5fdd124a JA |
277 | break; |
278 | } else if (!ret) | |
279 | continue; | |
280 | ||
0c09442b JA |
281 | /* |
282 | * should be impossible | |
283 | */ | |
284 | if (!(pfd.revents & POLLIN)) | |
285 | continue; | |
286 | ||
b5af8293 JA |
287 | f->fd = accept(nd->listenfd, (struct sockaddr *) &nd->addr, &socklen); |
288 | if (f->fd < 0) { | |
289 | td_verror(td, errno, "accept"); | |
290 | return 1; | |
291 | } | |
292 | break; | |
293 | } | |
5fdd124a | 294 | |
b5af8293 JA |
295 | return 0; |
296 | } | |
297 | ||
b5af8293 JA |
298 | static int fio_netio_open_file(struct thread_data *td, struct fio_file *f) |
299 | { | |
300 | if (td_read(td)) | |
301 | return fio_netio_accept(td, f); | |
302 | else | |
303 | return fio_netio_connect(td, f); | |
304 | } | |
305 | ||
306 | static int fio_netio_setup_connect(struct thread_data *td, const char *host, | |
307 | unsigned short port) | |
308 | { | |
309 | struct netio_data *nd = td->io_ops->data; | |
310 | ||
311 | nd->addr.sin_family = AF_INET; | |
312 | nd->addr.sin_port = htons(port); | |
313 | ||
314 | if (inet_aton(host, &nd->addr.sin_addr) != 1) { | |
315 | struct hostent *hent; | |
316 | ||
317 | hent = gethostbyname(host); | |
318 | if (!hent) { | |
319 | td_verror(td, errno, "gethostbyname"); | |
320 | return 1; | |
5fdd124a | 321 | } |
b5af8293 JA |
322 | |
323 | memcpy(&nd->addr.sin_addr, hent->h_addr, 4); | |
5fdd124a JA |
324 | } |
325 | ||
326 | return 0; | |
327 | } | |
328 | ||
b5af8293 | 329 | static int fio_netio_setup_listen(struct thread_data *td, short port) |
ed92ac0c | 330 | { |
b5af8293 | 331 | struct netio_data *nd = td->io_ops->data; |
5fdd124a | 332 | int fd, opt; |
ed92ac0c | 333 | |
6bedbfaf | 334 | fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); |
ed92ac0c | 335 | if (fd < 0) { |
e1161c32 | 336 | td_verror(td, errno, "socket"); |
ed92ac0c JA |
337 | return 1; |
338 | } | |
339 | ||
340 | opt = 1; | |
341 | if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) { | |
e1161c32 | 342 | td_verror(td, errno, "setsockopt"); |
ed92ac0c JA |
343 | return 1; |
344 | } | |
6bedbfaf JA |
345 | #ifdef SO_REUSEPORT |
346 | if (setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) { | |
e1161c32 | 347 | td_verror(td, errno, "setsockopt"); |
6bedbfaf JA |
348 | return 1; |
349 | } | |
350 | #endif | |
ed92ac0c | 351 | |
b5af8293 JA |
352 | nd->addr.sin_family = AF_INET; |
353 | nd->addr.sin_addr.s_addr = htonl(INADDR_ANY); | |
354 | nd->addr.sin_port = htons(port); | |
ed92ac0c | 355 | |
b5af8293 | 356 | if (bind(fd, (struct sockaddr *) &nd->addr, sizeof(nd->addr)) < 0) { |
e1161c32 | 357 | td_verror(td, errno, "bind"); |
ed92ac0c JA |
358 | return 1; |
359 | } | |
360 | if (listen(fd, 1) < 0) { | |
e1161c32 | 361 | td_verror(td, errno, "listen"); |
ed92ac0c JA |
362 | return 1; |
363 | } | |
364 | ||
b5af8293 JA |
365 | nd->listenfd = fd; |
366 | return 0; | |
ed92ac0c JA |
367 | } |
368 | ||
9bec88e1 | 369 | static int fio_netio_init(struct thread_data *td) |
ed92ac0c | 370 | { |
b5af8293 | 371 | struct netio_data *nd = td->io_ops->data; |
443662ef | 372 | unsigned int port; |
b5af8293 | 373 | char host[64], buf[128]; |
ed92ac0c | 374 | char *sep; |
af52b345 | 375 | int ret; |
ed92ac0c | 376 | |
413dd459 | 377 | if (td_rw(td)) { |
ed92ac0c JA |
378 | log_err("fio: network connections must be read OR write\n"); |
379 | return 1; | |
380 | } | |
16d55aae JA |
381 | if (td_random(td)) { |
382 | log_err("fio: network IO can't be random\n"); | |
383 | return 1; | |
384 | } | |
ed92ac0c | 385 | |
2dc1bbeb | 386 | strcpy(buf, td->o.filename); |
ed92ac0c | 387 | |
9f9214f2 | 388 | sep = strchr(buf, '/'); |
443662ef JA |
389 | if (!sep) |
390 | goto bad_host; | |
ed92ac0c JA |
391 | |
392 | *sep = '\0'; | |
393 | sep++; | |
394 | strcpy(host, buf); | |
443662ef JA |
395 | if (!strlen(host)) |
396 | goto bad_host; | |
397 | ||
398 | port = strtol(sep, NULL, 10); | |
399 | if (!port || port > 65535) | |
400 | goto bad_host; | |
ed92ac0c | 401 | |
413dd459 | 402 | if (td_read(td)) { |
b5af8293 | 403 | nd->send_to_net = 0; |
ed92ac0c JA |
404 | ret = fio_netio_setup_listen(td, port); |
405 | } else { | |
b5af8293 | 406 | nd->send_to_net = 1; |
ed92ac0c JA |
407 | ret = fio_netio_setup_connect(td, host, port); |
408 | } | |
409 | ||
7bb48f84 | 410 | return ret; |
443662ef JA |
411 | bad_host: |
412 | log_err("fio: bad network host/port: %s\n", td->o.filename); | |
413 | return 1; | |
ed92ac0c JA |
414 | } |
415 | ||
b5af8293 | 416 | static void fio_netio_cleanup(struct thread_data *td) |
9bec88e1 | 417 | { |
b5af8293 JA |
418 | struct netio_data *nd = td->io_ops->data; |
419 | ||
420 | if (nd) { | |
64b24cd8 JA |
421 | if (nd->listenfd != -1) |
422 | close(nd->listenfd); | |
423 | if (nd->pipes[0] != -1) | |
424 | close(nd->pipes[0]); | |
425 | if (nd->pipes[1] != -1) | |
426 | close(nd->pipes[1]); | |
427 | ||
b5af8293 | 428 | free(nd); |
b5af8293 JA |
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; | |
64b24cd8 | 441 | nd->pipes[0] = nd->pipes[1] = -1; |
7bb48f84 | 442 | td->io_ops->data = nd; |
7bb48f84 | 443 | } |
b5af8293 | 444 | |
9bec88e1 JA |
445 | return 0; |
446 | } | |
447 | ||
5921e80c | 448 | #ifdef FIO_HAVE_SPLICE |
9cce02e8 JA |
449 | static int fio_netio_setup_splice(struct thread_data *td) |
450 | { | |
451 | struct netio_data *nd; | |
452 | ||
453 | fio_netio_setup(td); | |
454 | ||
455 | nd = td->io_ops->data; | |
456 | if (nd) { | |
457 | if (pipe(nd->pipes) < 0) | |
458 | return 1; | |
459 | ||
460 | nd->use_splice = 1; | |
461 | return 0; | |
462 | } | |
463 | ||
464 | return 1; | |
465 | } | |
466 | ||
5921e80c JA |
467 | static struct ioengine_ops ioengine_splice = { |
468 | .name = "netsplice", | |
ed92ac0c | 469 | .version = FIO_IOOPS_VERSION, |
ed92ac0c JA |
470 | .prep = fio_netio_prep, |
471 | .queue = fio_netio_queue, | |
5921e80c | 472 | .setup = fio_netio_setup_splice, |
9bec88e1 | 473 | .init = fio_netio_init, |
b5af8293 JA |
474 | .cleanup = fio_netio_cleanup, |
475 | .open_file = fio_netio_open_file, | |
476 | .close_file = generic_close_file, | |
ad830ed7 JA |
477 | .flags = FIO_SYNCIO | FIO_DISKLESSIO | FIO_UNIDIR | |
478 | FIO_SIGQUIT, | |
ed92ac0c | 479 | }; |
5921e80c | 480 | #endif |
ed92ac0c | 481 | |
5921e80c JA |
482 | static struct ioengine_ops ioengine_rw = { |
483 | .name = "net", | |
9cce02e8 JA |
484 | .version = FIO_IOOPS_VERSION, |
485 | .prep = fio_netio_prep, | |
486 | .queue = fio_netio_queue, | |
5921e80c | 487 | .setup = fio_netio_setup, |
9cce02e8 JA |
488 | .init = fio_netio_init, |
489 | .cleanup = fio_netio_cleanup, | |
490 | .open_file = fio_netio_open_file, | |
491 | .close_file = generic_close_file, | |
ad830ed7 JA |
492 | .flags = FIO_SYNCIO | FIO_DISKLESSIO | FIO_UNIDIR | |
493 | FIO_SIGQUIT, | |
9cce02e8 JA |
494 | }; |
495 | ||
ed92ac0c JA |
496 | static void fio_init fio_netio_register(void) |
497 | { | |
9cce02e8 | 498 | register_ioengine(&ioengine_rw); |
5921e80c | 499 | #ifdef FIO_HAVE_SPLICE |
9cce02e8 | 500 | register_ioengine(&ioengine_splice); |
5921e80c | 501 | #endif |
ed92ac0c JA |
502 | } |
503 | ||
504 | static void fio_exit fio_netio_unregister(void) | |
505 | { | |
9cce02e8 | 506 | unregister_ioengine(&ioengine_rw); |
5921e80c | 507 | #ifdef FIO_HAVE_SPLICE |
9cce02e8 | 508 | unregister_ioengine(&ioengine_splice); |
5921e80c | 509 | #endif |
ed92ac0c | 510 | } |