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> |
7292056a JA |
16 | #include <sys/types.h> |
17 | #include <sys/socket.h> | |
ed92ac0c JA |
18 | |
19 | #include "../fio.h" | |
ed92ac0c | 20 | |
b5af8293 JA |
21 | struct netio_data { |
22 | int listenfd; | |
23 | int send_to_net; | |
9cce02e8 JA |
24 | int use_splice; |
25 | int pipes[2]; | |
b5af8293 JA |
26 | char host[64]; |
27 | struct sockaddr_in addr; | |
28 | }; | |
ed92ac0c JA |
29 | |
30 | static int fio_netio_prep(struct thread_data *td, struct io_u *io_u) | |
31 | { | |
b5af8293 | 32 | struct netio_data *nd = td->io_ops->data; |
ed92ac0c | 33 | |
7a6499da JA |
34 | /* |
35 | * Make sure we don't see spurious reads to a receiver, and vice versa | |
36 | */ | |
b5af8293 JA |
37 | if ((nd->send_to_net && io_u->ddir == DDIR_READ) || |
38 | (!nd->send_to_net && io_u->ddir == DDIR_WRITE)) { | |
e1161c32 | 39 | td_verror(td, EINVAL, "bad direction"); |
7a6499da | 40 | return 1; |
ed92ac0c | 41 | } |
7a6499da | 42 | |
f85ac25a | 43 | return 0; |
ed92ac0c JA |
44 | } |
45 | ||
5921e80c | 46 | #ifdef FIO_HAVE_SPLICE |
cd963e18 | 47 | static int splice_io_u(int fdin, int fdout, unsigned int len) |
ed92ac0c | 48 | { |
9cce02e8 | 49 | int bytes = 0; |
7a6499da | 50 | |
9cce02e8 | 51 | while (len) { |
cd963e18 | 52 | int ret = splice(fdin, NULL, fdout, NULL, len, 0); |
9cce02e8 JA |
53 | |
54 | if (ret < 0) { | |
55 | if (!bytes) | |
56 | bytes = ret; | |
57 | ||
58 | break; | |
59 | } else if (!ret) | |
60 | break; | |
61 | ||
62 | bytes += ret; | |
f657a2fb | 63 | len -= ret; |
9cce02e8 JA |
64 | } |
65 | ||
66 | return bytes; | |
67 | } | |
68 | ||
69 | /* | |
cd963e18 | 70 | * Receive bytes from a socket and fill them into the internal pipe |
9cce02e8 | 71 | */ |
cd963e18 | 72 | static int splice_in(struct thread_data *td, struct io_u *io_u) |
9cce02e8 JA |
73 | { |
74 | struct netio_data *nd = td->io_ops->data; | |
9cce02e8 | 75 | |
cd963e18 | 76 | return splice_io_u(io_u->file->fd, nd->pipes[1], io_u->xfer_buflen); |
9cce02e8 JA |
77 | } |
78 | ||
79 | /* | |
cd963e18 | 80 | * Transmit 'len' bytes from the internal pipe |
9cce02e8 | 81 | */ |
cd963e18 JA |
82 | static int splice_out(struct thread_data *td, struct io_u *io_u, |
83 | unsigned int len) | |
9cce02e8 JA |
84 | { |
85 | struct netio_data *nd = td->io_ops->data; | |
cd963e18 JA |
86 | |
87 | return splice_io_u(nd->pipes[0], io_u->file->fd, len); | |
88 | } | |
89 | ||
90 | static int vmsplice_io_u(struct io_u *io_u, int fd, unsigned int len) | |
91 | { | |
9cce02e8 JA |
92 | struct iovec iov = { |
93 | .iov_base = io_u->xfer_buf, | |
94 | .iov_len = len, | |
95 | }; | |
96 | int bytes = 0; | |
97 | ||
98 | while (iov.iov_len) { | |
cd963e18 | 99 | int ret = vmsplice(fd, &iov, 1, SPLICE_F_MOVE); |
9cce02e8 JA |
100 | |
101 | if (ret < 0) { | |
102 | if (!bytes) | |
103 | bytes = ret; | |
104 | break; | |
105 | } else if (!ret) | |
106 | break; | |
107 | ||
108 | iov.iov_len -= ret; | |
cd963e18 | 109 | iov.iov_base += ret; |
f657a2fb | 110 | bytes += ret; |
9cce02e8 JA |
111 | } |
112 | ||
113 | return bytes; | |
cd963e18 | 114 | |
9cce02e8 JA |
115 | } |
116 | ||
117 | /* | |
cd963e18 | 118 | * vmsplice() pipe to io_u buffer |
9cce02e8 | 119 | */ |
cd963e18 JA |
120 | static int vmsplice_io_u_out(struct thread_data *td, struct io_u *io_u, |
121 | unsigned int len) | |
9cce02e8 JA |
122 | { |
123 | struct netio_data *nd = td->io_ops->data; | |
9cce02e8 | 124 | |
cd963e18 JA |
125 | return vmsplice_io_u(io_u, nd->pipes[0], len); |
126 | } | |
9cce02e8 | 127 | |
cd963e18 JA |
128 | /* |
129 | * vmsplice() io_u to pipe | |
130 | */ | |
131 | static int vmsplice_io_u_in(struct thread_data *td, struct io_u *io_u) | |
132 | { | |
133 | struct netio_data *nd = td->io_ops->data; | |
ed92ac0c | 134 | |
cd963e18 | 135 | return vmsplice_io_u(io_u, nd->pipes[1], io_u->xfer_buflen); |
9cce02e8 JA |
136 | } |
137 | ||
cd963e18 JA |
138 | /* |
139 | * splice receive - transfer socket data into a pipe using splice, then map | |
140 | * that pipe data into the io_u using vmsplice. | |
141 | */ | |
9cce02e8 JA |
142 | static int fio_netio_splice_in(struct thread_data *td, struct io_u *io_u) |
143 | { | |
144 | int ret; | |
145 | ||
146 | ret = splice_in(td, io_u); | |
cd963e18 JA |
147 | if (ret > 0) |
148 | return vmsplice_io_u_out(td, io_u, ret); | |
9cce02e8 | 149 | |
cd963e18 | 150 | return ret; |
9cce02e8 JA |
151 | } |
152 | ||
cd963e18 JA |
153 | /* |
154 | * splice transmit - map data from the io_u into a pipe by using vmsplice, | |
155 | * then transfer that pipe to a socket using splice. | |
156 | */ | |
9cce02e8 JA |
157 | static int fio_netio_splice_out(struct thread_data *td, struct io_u *io_u) |
158 | { | |
159 | int ret; | |
160 | ||
161 | ret = vmsplice_io_u_in(td, io_u); | |
cd963e18 JA |
162 | if (ret > 0) |
163 | return splice_out(td, io_u, ret); | |
9cce02e8 | 164 | |
cd963e18 | 165 | return ret; |
9cce02e8 | 166 | } |
5921e80c JA |
167 | #else |
168 | static int fio_netio_splice_in(struct thread_data *td, struct io_u *io_u) | |
169 | { | |
af8771b9 | 170 | errno = EOPNOTSUPP; |
5921e80c JA |
171 | return -1; |
172 | } | |
173 | ||
174 | static int fio_netio_splice_out(struct thread_data *td, struct io_u *io_u) | |
175 | { | |
af8771b9 | 176 | errno = EOPNOTSUPP; |
5921e80c JA |
177 | return -1; |
178 | } | |
179 | #endif | |
9cce02e8 JA |
180 | |
181 | static int fio_netio_send(struct thread_data *td, struct io_u *io_u) | |
182 | { | |
183 | int flags = 0; | |
184 | ||
185 | /* | |
186 | * if we are going to write more, set MSG_MORE | |
187 | */ | |
5921e80c | 188 | #ifdef MSG_MORE |
9cce02e8 JA |
189 | if (td->this_io_bytes[DDIR_WRITE] + io_u->xfer_buflen < td->o.size) |
190 | flags = MSG_MORE; | |
5921e80c | 191 | #endif |
9cce02e8 JA |
192 | |
193 | return send(io_u->file->fd, io_u->xfer_buf, io_u->xfer_buflen, flags); | |
194 | } | |
195 | ||
196 | static int fio_netio_recv(struct io_u *io_u) | |
197 | { | |
198 | int flags = MSG_WAITALL; | |
199 | ||
200 | return recv(io_u->file->fd, io_u->xfer_buf, io_u->xfer_buflen, flags); | |
201 | } | |
202 | ||
203 | static int fio_netio_queue(struct thread_data *td, struct io_u *io_u) | |
204 | { | |
205 | struct netio_data *nd = td->io_ops->data; | |
206 | int ret; | |
207 | ||
7101d9c2 JA |
208 | fio_ro_check(td, io_u); |
209 | ||
9cce02e8 JA |
210 | if (io_u->ddir == DDIR_WRITE) { |
211 | if (nd->use_splice) | |
212 | ret = fio_netio_splice_out(td, io_u); | |
213 | else | |
214 | ret = fio_netio_send(td, io_u); | |
d4f12dd0 | 215 | } else if (io_u->ddir == DDIR_READ) { |
9cce02e8 JA |
216 | if (nd->use_splice) |
217 | ret = fio_netio_splice_in(td, io_u); | |
218 | else | |
219 | ret = fio_netio_recv(io_u); | |
d4f12dd0 | 220 | } else |
7a6499da | 221 | ret = 0; /* must be a SYNC */ |
ed92ac0c | 222 | |
cec6b55d | 223 | if (ret != (int) io_u->xfer_buflen) { |
22819ec2 | 224 | if (ret >= 0) { |
cec6b55d JA |
225 | io_u->resid = io_u->xfer_buflen - ret; |
226 | io_u->error = 0; | |
36167d82 | 227 | return FIO_Q_COMPLETED; |
ed92ac0c JA |
228 | } else |
229 | io_u->error = errno; | |
230 | } | |
231 | ||
36167d82 | 232 | if (io_u->error) |
e1161c32 | 233 | td_verror(td, io_u->error, "xfer"); |
ed92ac0c | 234 | |
36167d82 | 235 | return FIO_Q_COMPLETED; |
ed92ac0c JA |
236 | } |
237 | ||
b5af8293 | 238 | static int fio_netio_connect(struct thread_data *td, struct fio_file *f) |
ed92ac0c | 239 | { |
b5af8293 | 240 | struct netio_data *nd = td->io_ops->data; |
ed92ac0c | 241 | |
b5af8293 JA |
242 | f->fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); |
243 | if (f->fd < 0) { | |
244 | td_verror(td, errno, "socket"); | |
245 | return 1; | |
ed92ac0c JA |
246 | } |
247 | ||
b5af8293 JA |
248 | if (connect(f->fd, (struct sockaddr *) &nd->addr, sizeof(nd->addr)) < 0) { |
249 | td_verror(td, errno, "connect"); | |
250 | return 1; | |
ed92ac0c JA |
251 | } |
252 | ||
253 | return 0; | |
ed92ac0c JA |
254 | } |
255 | ||
b5af8293 | 256 | static int fio_netio_accept(struct thread_data *td, struct fio_file *f) |
5fdd124a | 257 | { |
b5af8293 JA |
258 | struct netio_data *nd = td->io_ops->data; |
259 | socklen_t socklen = sizeof(nd->addr); | |
5fdd124a | 260 | struct pollfd pfd; |
b5af8293 | 261 | int ret; |
5fdd124a | 262 | |
6d86144d | 263 | log_info("fio: waiting for connection\n"); |
5fdd124a JA |
264 | |
265 | /* | |
266 | * Accept loop. poll for incoming events, accept them. Repeat until we | |
267 | * have all connections. | |
268 | */ | |
b5af8293 JA |
269 | while (!td->terminate) { |
270 | pfd.fd = nd->listenfd; | |
5fdd124a JA |
271 | pfd.events = POLLIN; |
272 | ||
273 | ret = poll(&pfd, 1, -1); | |
274 | if (ret < 0) { | |
275 | if (errno == EINTR) | |
276 | continue; | |
277 | ||
e1161c32 | 278 | td_verror(td, errno, "poll"); |
5fdd124a JA |
279 | break; |
280 | } else if (!ret) | |
281 | continue; | |
282 | ||
0c09442b JA |
283 | /* |
284 | * should be impossible | |
285 | */ | |
286 | if (!(pfd.revents & POLLIN)) | |
287 | continue; | |
288 | ||
b5af8293 JA |
289 | f->fd = accept(nd->listenfd, (struct sockaddr *) &nd->addr, &socklen); |
290 | if (f->fd < 0) { | |
291 | td_verror(td, errno, "accept"); | |
292 | return 1; | |
293 | } | |
294 | break; | |
295 | } | |
5fdd124a | 296 | |
b5af8293 JA |
297 | return 0; |
298 | } | |
299 | ||
b5af8293 JA |
300 | static int fio_netio_open_file(struct thread_data *td, struct fio_file *f) |
301 | { | |
302 | if (td_read(td)) | |
303 | return fio_netio_accept(td, f); | |
304 | else | |
305 | return fio_netio_connect(td, f); | |
306 | } | |
307 | ||
308 | static int fio_netio_setup_connect(struct thread_data *td, const char *host, | |
309 | unsigned short port) | |
310 | { | |
311 | struct netio_data *nd = td->io_ops->data; | |
312 | ||
313 | nd->addr.sin_family = AF_INET; | |
314 | nd->addr.sin_port = htons(port); | |
315 | ||
316 | if (inet_aton(host, &nd->addr.sin_addr) != 1) { | |
317 | struct hostent *hent; | |
318 | ||
319 | hent = gethostbyname(host); | |
320 | if (!hent) { | |
321 | td_verror(td, errno, "gethostbyname"); | |
322 | return 1; | |
5fdd124a | 323 | } |
b5af8293 JA |
324 | |
325 | memcpy(&nd->addr.sin_addr, hent->h_addr, 4); | |
5fdd124a JA |
326 | } |
327 | ||
328 | return 0; | |
329 | } | |
330 | ||
b5af8293 | 331 | static int fio_netio_setup_listen(struct thread_data *td, short port) |
ed92ac0c | 332 | { |
b5af8293 | 333 | struct netio_data *nd = td->io_ops->data; |
5fdd124a | 334 | int fd, opt; |
ed92ac0c | 335 | |
6bedbfaf | 336 | fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); |
ed92ac0c | 337 | if (fd < 0) { |
e1161c32 | 338 | td_verror(td, errno, "socket"); |
ed92ac0c JA |
339 | return 1; |
340 | } | |
341 | ||
342 | opt = 1; | |
343 | if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) { | |
e1161c32 | 344 | td_verror(td, errno, "setsockopt"); |
ed92ac0c JA |
345 | return 1; |
346 | } | |
6bedbfaf JA |
347 | #ifdef SO_REUSEPORT |
348 | if (setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) { | |
e1161c32 | 349 | td_verror(td, errno, "setsockopt"); |
6bedbfaf JA |
350 | return 1; |
351 | } | |
352 | #endif | |
ed92ac0c | 353 | |
b5af8293 JA |
354 | nd->addr.sin_family = AF_INET; |
355 | nd->addr.sin_addr.s_addr = htonl(INADDR_ANY); | |
356 | nd->addr.sin_port = htons(port); | |
ed92ac0c | 357 | |
b5af8293 | 358 | if (bind(fd, (struct sockaddr *) &nd->addr, sizeof(nd->addr)) < 0) { |
e1161c32 | 359 | td_verror(td, errno, "bind"); |
ed92ac0c JA |
360 | return 1; |
361 | } | |
362 | if (listen(fd, 1) < 0) { | |
e1161c32 | 363 | td_verror(td, errno, "listen"); |
ed92ac0c JA |
364 | return 1; |
365 | } | |
366 | ||
b5af8293 JA |
367 | nd->listenfd = fd; |
368 | return 0; | |
ed92ac0c JA |
369 | } |
370 | ||
9bec88e1 | 371 | static int fio_netio_init(struct thread_data *td) |
ed92ac0c | 372 | { |
b5af8293 | 373 | struct netio_data *nd = td->io_ops->data; |
443662ef | 374 | unsigned int port; |
b5af8293 | 375 | char host[64], buf[128]; |
ed92ac0c | 376 | char *sep; |
af52b345 | 377 | int ret; |
ed92ac0c | 378 | |
413dd459 | 379 | if (td_rw(td)) { |
ed92ac0c JA |
380 | log_err("fio: network connections must be read OR write\n"); |
381 | return 1; | |
382 | } | |
16d55aae JA |
383 | if (td_random(td)) { |
384 | log_err("fio: network IO can't be random\n"); | |
385 | return 1; | |
386 | } | |
ed92ac0c | 387 | |
2dc1bbeb | 388 | strcpy(buf, td->o.filename); |
ed92ac0c | 389 | |
9f9214f2 | 390 | sep = strchr(buf, '/'); |
443662ef JA |
391 | if (!sep) |
392 | goto bad_host; | |
ed92ac0c JA |
393 | |
394 | *sep = '\0'; | |
395 | sep++; | |
396 | strcpy(host, buf); | |
443662ef JA |
397 | if (!strlen(host)) |
398 | goto bad_host; | |
399 | ||
400 | port = strtol(sep, NULL, 10); | |
401 | if (!port || port > 65535) | |
402 | goto bad_host; | |
ed92ac0c | 403 | |
413dd459 | 404 | if (td_read(td)) { |
b5af8293 | 405 | nd->send_to_net = 0; |
ed92ac0c JA |
406 | ret = fio_netio_setup_listen(td, port); |
407 | } else { | |
b5af8293 | 408 | nd->send_to_net = 1; |
ed92ac0c JA |
409 | ret = fio_netio_setup_connect(td, host, port); |
410 | } | |
411 | ||
7bb48f84 | 412 | return ret; |
443662ef JA |
413 | bad_host: |
414 | log_err("fio: bad network host/port: %s\n", td->o.filename); | |
415 | return 1; | |
ed92ac0c JA |
416 | } |
417 | ||
b5af8293 | 418 | static void fio_netio_cleanup(struct thread_data *td) |
9bec88e1 | 419 | { |
b5af8293 JA |
420 | struct netio_data *nd = td->io_ops->data; |
421 | ||
422 | if (nd) { | |
64b24cd8 JA |
423 | if (nd->listenfd != -1) |
424 | close(nd->listenfd); | |
425 | if (nd->pipes[0] != -1) | |
426 | close(nd->pipes[0]); | |
427 | if (nd->pipes[1] != -1) | |
428 | close(nd->pipes[1]); | |
429 | ||
b5af8293 | 430 | free(nd); |
b5af8293 JA |
431 | } |
432 | } | |
433 | ||
434 | static int fio_netio_setup(struct thread_data *td) | |
435 | { | |
7bb48f84 | 436 | struct netio_data *nd; |
7bb48f84 JA |
437 | |
438 | if (!td->io_ops->data) { | |
439 | nd = malloc(sizeof(*nd));; | |
440 | ||
441 | memset(nd, 0, sizeof(*nd)); | |
442 | nd->listenfd = -1; | |
64b24cd8 | 443 | nd->pipes[0] = nd->pipes[1] = -1; |
7bb48f84 | 444 | td->io_ops->data = nd; |
7bb48f84 | 445 | } |
b5af8293 | 446 | |
9bec88e1 JA |
447 | return 0; |
448 | } | |
449 | ||
5921e80c | 450 | #ifdef FIO_HAVE_SPLICE |
9cce02e8 JA |
451 | static int fio_netio_setup_splice(struct thread_data *td) |
452 | { | |
453 | struct netio_data *nd; | |
454 | ||
455 | fio_netio_setup(td); | |
456 | ||
457 | nd = td->io_ops->data; | |
458 | if (nd) { | |
459 | if (pipe(nd->pipes) < 0) | |
460 | return 1; | |
461 | ||
462 | nd->use_splice = 1; | |
463 | return 0; | |
464 | } | |
465 | ||
466 | return 1; | |
467 | } | |
468 | ||
5921e80c JA |
469 | static struct ioengine_ops ioengine_splice = { |
470 | .name = "netsplice", | |
ed92ac0c | 471 | .version = FIO_IOOPS_VERSION, |
ed92ac0c JA |
472 | .prep = fio_netio_prep, |
473 | .queue = fio_netio_queue, | |
5921e80c | 474 | .setup = fio_netio_setup_splice, |
9bec88e1 | 475 | .init = fio_netio_init, |
b5af8293 JA |
476 | .cleanup = fio_netio_cleanup, |
477 | .open_file = fio_netio_open_file, | |
478 | .close_file = generic_close_file, | |
ad830ed7 JA |
479 | .flags = FIO_SYNCIO | FIO_DISKLESSIO | FIO_UNIDIR | |
480 | FIO_SIGQUIT, | |
ed92ac0c | 481 | }; |
5921e80c | 482 | #endif |
ed92ac0c | 483 | |
5921e80c JA |
484 | static struct ioengine_ops ioengine_rw = { |
485 | .name = "net", | |
9cce02e8 JA |
486 | .version = FIO_IOOPS_VERSION, |
487 | .prep = fio_netio_prep, | |
488 | .queue = fio_netio_queue, | |
5921e80c | 489 | .setup = fio_netio_setup, |
9cce02e8 JA |
490 | .init = fio_netio_init, |
491 | .cleanup = fio_netio_cleanup, | |
492 | .open_file = fio_netio_open_file, | |
493 | .close_file = generic_close_file, | |
ad830ed7 JA |
494 | .flags = FIO_SYNCIO | FIO_DISKLESSIO | FIO_UNIDIR | |
495 | FIO_SIGQUIT, | |
9cce02e8 JA |
496 | }; |
497 | ||
ed92ac0c JA |
498 | static void fio_init fio_netio_register(void) |
499 | { | |
9cce02e8 | 500 | register_ioengine(&ioengine_rw); |
5921e80c | 501 | #ifdef FIO_HAVE_SPLICE |
9cce02e8 | 502 | register_ioengine(&ioengine_splice); |
5921e80c | 503 | #endif |
ed92ac0c JA |
504 | } |
505 | ||
506 | static void fio_exit fio_netio_unregister(void) | |
507 | { | |
9cce02e8 | 508 | unregister_ioengine(&ioengine_rw); |
5921e80c | 509 | #ifdef FIO_HAVE_SPLICE |
9cce02e8 | 510 | unregister_ioengine(&ioengine_splice); |
5921e80c | 511 | #endif |
ed92ac0c | 512 | } |