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 | ||
cd963e18 | 55 | static int splice_io_u(int fdin, int fdout, unsigned int len) |
ed92ac0c | 56 | { |
9cce02e8 | 57 | int bytes = 0; |
7a6499da | 58 | |
9cce02e8 | 59 | while (len) { |
cd963e18 | 60 | int ret = splice(fdin, NULL, fdout, NULL, len, 0); |
9cce02e8 JA |
61 | |
62 | if (ret < 0) { | |
63 | if (!bytes) | |
64 | bytes = ret; | |
65 | ||
66 | break; | |
67 | } else if (!ret) | |
68 | break; | |
69 | ||
70 | bytes += ret; | |
f657a2fb | 71 | len -= ret; |
9cce02e8 JA |
72 | } |
73 | ||
74 | return bytes; | |
75 | } | |
76 | ||
77 | /* | |
cd963e18 | 78 | * Receive bytes from a socket and fill them into the internal pipe |
9cce02e8 | 79 | */ |
cd963e18 | 80 | static int splice_in(struct thread_data *td, struct io_u *io_u) |
9cce02e8 JA |
81 | { |
82 | struct netio_data *nd = td->io_ops->data; | |
9cce02e8 | 83 | |
cd963e18 | 84 | return splice_io_u(io_u->file->fd, nd->pipes[1], io_u->xfer_buflen); |
9cce02e8 JA |
85 | } |
86 | ||
87 | /* | |
cd963e18 | 88 | * Transmit 'len' bytes from the internal pipe |
9cce02e8 | 89 | */ |
cd963e18 JA |
90 | static int splice_out(struct thread_data *td, struct io_u *io_u, |
91 | unsigned int len) | |
9cce02e8 JA |
92 | { |
93 | struct netio_data *nd = td->io_ops->data; | |
cd963e18 JA |
94 | |
95 | return splice_io_u(nd->pipes[0], io_u->file->fd, len); | |
96 | } | |
97 | ||
98 | static int vmsplice_io_u(struct io_u *io_u, int fd, unsigned int len) | |
99 | { | |
9cce02e8 JA |
100 | struct iovec iov = { |
101 | .iov_base = io_u->xfer_buf, | |
102 | .iov_len = len, | |
103 | }; | |
104 | int bytes = 0; | |
105 | ||
106 | while (iov.iov_len) { | |
cd963e18 | 107 | int ret = vmsplice(fd, &iov, 1, SPLICE_F_MOVE); |
9cce02e8 JA |
108 | |
109 | if (ret < 0) { | |
110 | if (!bytes) | |
111 | bytes = ret; | |
112 | break; | |
113 | } else if (!ret) | |
114 | break; | |
115 | ||
116 | iov.iov_len -= ret; | |
cd963e18 | 117 | iov.iov_base += ret; |
f657a2fb | 118 | bytes += ret; |
9cce02e8 JA |
119 | } |
120 | ||
121 | return bytes; | |
cd963e18 | 122 | |
9cce02e8 JA |
123 | } |
124 | ||
125 | /* | |
cd963e18 | 126 | * vmsplice() pipe to io_u buffer |
9cce02e8 | 127 | */ |
cd963e18 JA |
128 | static int vmsplice_io_u_out(struct thread_data *td, struct io_u *io_u, |
129 | unsigned int len) | |
9cce02e8 JA |
130 | { |
131 | struct netio_data *nd = td->io_ops->data; | |
9cce02e8 | 132 | |
cd963e18 JA |
133 | return vmsplice_io_u(io_u, nd->pipes[0], len); |
134 | } | |
9cce02e8 | 135 | |
cd963e18 JA |
136 | /* |
137 | * vmsplice() io_u to pipe | |
138 | */ | |
139 | static int vmsplice_io_u_in(struct thread_data *td, struct io_u *io_u) | |
140 | { | |
141 | struct netio_data *nd = td->io_ops->data; | |
ed92ac0c | 142 | |
cd963e18 | 143 | return vmsplice_io_u(io_u, nd->pipes[1], io_u->xfer_buflen); |
9cce02e8 JA |
144 | } |
145 | ||
cd963e18 JA |
146 | /* |
147 | * splice receive - transfer socket data into a pipe using splice, then map | |
148 | * that pipe data into the io_u using vmsplice. | |
149 | */ | |
9cce02e8 JA |
150 | static int fio_netio_splice_in(struct thread_data *td, struct io_u *io_u) |
151 | { | |
152 | int ret; | |
153 | ||
154 | ret = splice_in(td, io_u); | |
cd963e18 JA |
155 | if (ret > 0) |
156 | return vmsplice_io_u_out(td, io_u, ret); | |
9cce02e8 | 157 | |
cd963e18 | 158 | return ret; |
9cce02e8 JA |
159 | } |
160 | ||
cd963e18 JA |
161 | /* |
162 | * splice transmit - map data from the io_u into a pipe by using vmsplice, | |
163 | * then transfer that pipe to a socket using splice. | |
164 | */ | |
9cce02e8 JA |
165 | static int fio_netio_splice_out(struct thread_data *td, struct io_u *io_u) |
166 | { | |
167 | int ret; | |
168 | ||
169 | ret = vmsplice_io_u_in(td, io_u); | |
cd963e18 JA |
170 | if (ret > 0) |
171 | return splice_out(td, io_u, ret); | |
9cce02e8 | 172 | |
cd963e18 | 173 | return ret; |
9cce02e8 JA |
174 | } |
175 | ||
176 | static int fio_netio_send(struct thread_data *td, struct io_u *io_u) | |
177 | { | |
178 | int flags = 0; | |
179 | ||
180 | /* | |
181 | * if we are going to write more, set MSG_MORE | |
182 | */ | |
183 | if (td->this_io_bytes[DDIR_WRITE] + io_u->xfer_buflen < td->o.size) | |
184 | flags = MSG_MORE; | |
185 | ||
186 | return send(io_u->file->fd, io_u->xfer_buf, io_u->xfer_buflen, flags); | |
187 | } | |
188 | ||
189 | static int fio_netio_recv(struct io_u *io_u) | |
190 | { | |
191 | int flags = MSG_WAITALL; | |
192 | ||
193 | return recv(io_u->file->fd, io_u->xfer_buf, io_u->xfer_buflen, flags); | |
194 | } | |
195 | ||
196 | static int fio_netio_queue(struct thread_data *td, struct io_u *io_u) | |
197 | { | |
198 | struct netio_data *nd = td->io_ops->data; | |
199 | int ret; | |
200 | ||
201 | if (io_u->ddir == DDIR_WRITE) { | |
202 | if (nd->use_splice) | |
203 | ret = fio_netio_splice_out(td, io_u); | |
204 | else | |
205 | ret = fio_netio_send(td, io_u); | |
d4f12dd0 | 206 | } else if (io_u->ddir == DDIR_READ) { |
9cce02e8 JA |
207 | if (nd->use_splice) |
208 | ret = fio_netio_splice_in(td, io_u); | |
209 | else | |
210 | ret = fio_netio_recv(io_u); | |
d4f12dd0 | 211 | } else |
7a6499da | 212 | ret = 0; /* must be a SYNC */ |
ed92ac0c | 213 | |
cec6b55d | 214 | if (ret != (int) io_u->xfer_buflen) { |
22819ec2 | 215 | if (ret >= 0) { |
cec6b55d JA |
216 | io_u->resid = io_u->xfer_buflen - ret; |
217 | io_u->error = 0; | |
36167d82 | 218 | return FIO_Q_COMPLETED; |
ed92ac0c JA |
219 | } else |
220 | io_u->error = errno; | |
221 | } | |
222 | ||
36167d82 | 223 | if (io_u->error) |
e1161c32 | 224 | td_verror(td, io_u->error, "xfer"); |
ed92ac0c | 225 | |
36167d82 | 226 | return FIO_Q_COMPLETED; |
ed92ac0c JA |
227 | } |
228 | ||
b5af8293 | 229 | static int fio_netio_connect(struct thread_data *td, struct fio_file *f) |
ed92ac0c | 230 | { |
b5af8293 | 231 | struct netio_data *nd = td->io_ops->data; |
ed92ac0c | 232 | |
b5af8293 JA |
233 | f->fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); |
234 | if (f->fd < 0) { | |
235 | td_verror(td, errno, "socket"); | |
236 | return 1; | |
ed92ac0c JA |
237 | } |
238 | ||
b5af8293 JA |
239 | if (connect(f->fd, (struct sockaddr *) &nd->addr, sizeof(nd->addr)) < 0) { |
240 | td_verror(td, errno, "connect"); | |
241 | return 1; | |
ed92ac0c JA |
242 | } |
243 | ||
244 | return 0; | |
ed92ac0c JA |
245 | } |
246 | ||
b5af8293 | 247 | static int fio_netio_accept(struct thread_data *td, struct fio_file *f) |
5fdd124a | 248 | { |
b5af8293 JA |
249 | struct netio_data *nd = td->io_ops->data; |
250 | socklen_t socklen = sizeof(nd->addr); | |
5fdd124a | 251 | struct pollfd pfd; |
b5af8293 | 252 | int ret; |
5fdd124a | 253 | |
6d86144d | 254 | log_info("fio: waiting for connection\n"); |
5fdd124a JA |
255 | |
256 | /* | |
257 | * Accept loop. poll for incoming events, accept them. Repeat until we | |
258 | * have all connections. | |
259 | */ | |
b5af8293 JA |
260 | while (!td->terminate) { |
261 | pfd.fd = nd->listenfd; | |
5fdd124a JA |
262 | pfd.events = POLLIN; |
263 | ||
264 | ret = poll(&pfd, 1, -1); | |
265 | if (ret < 0) { | |
266 | if (errno == EINTR) | |
267 | continue; | |
268 | ||
e1161c32 | 269 | td_verror(td, errno, "poll"); |
5fdd124a JA |
270 | break; |
271 | } else if (!ret) | |
272 | continue; | |
273 | ||
0c09442b JA |
274 | /* |
275 | * should be impossible | |
276 | */ | |
277 | if (!(pfd.revents & POLLIN)) | |
278 | continue; | |
279 | ||
b5af8293 JA |
280 | f->fd = accept(nd->listenfd, (struct sockaddr *) &nd->addr, &socklen); |
281 | if (f->fd < 0) { | |
282 | td_verror(td, errno, "accept"); | |
283 | return 1; | |
284 | } | |
285 | break; | |
286 | } | |
5fdd124a | 287 | |
b5af8293 JA |
288 | return 0; |
289 | } | |
290 | ||
b5af8293 JA |
291 | static int fio_netio_open_file(struct thread_data *td, struct fio_file *f) |
292 | { | |
293 | if (td_read(td)) | |
294 | return fio_netio_accept(td, f); | |
295 | else | |
296 | return fio_netio_connect(td, f); | |
297 | } | |
298 | ||
299 | static int fio_netio_setup_connect(struct thread_data *td, const char *host, | |
300 | unsigned short port) | |
301 | { | |
302 | struct netio_data *nd = td->io_ops->data; | |
303 | ||
304 | nd->addr.sin_family = AF_INET; | |
305 | nd->addr.sin_port = htons(port); | |
306 | ||
307 | if (inet_aton(host, &nd->addr.sin_addr) != 1) { | |
308 | struct hostent *hent; | |
309 | ||
310 | hent = gethostbyname(host); | |
311 | if (!hent) { | |
312 | td_verror(td, errno, "gethostbyname"); | |
313 | return 1; | |
5fdd124a | 314 | } |
b5af8293 JA |
315 | |
316 | memcpy(&nd->addr.sin_addr, hent->h_addr, 4); | |
5fdd124a JA |
317 | } |
318 | ||
319 | return 0; | |
320 | } | |
321 | ||
b5af8293 | 322 | static int fio_netio_setup_listen(struct thread_data *td, short port) |
ed92ac0c | 323 | { |
b5af8293 | 324 | struct netio_data *nd = td->io_ops->data; |
5fdd124a | 325 | int fd, opt; |
ed92ac0c | 326 | |
6bedbfaf | 327 | fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); |
ed92ac0c | 328 | if (fd < 0) { |
e1161c32 | 329 | td_verror(td, errno, "socket"); |
ed92ac0c JA |
330 | return 1; |
331 | } | |
332 | ||
333 | opt = 1; | |
334 | if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) { | |
e1161c32 | 335 | td_verror(td, errno, "setsockopt"); |
ed92ac0c JA |
336 | return 1; |
337 | } | |
6bedbfaf JA |
338 | #ifdef SO_REUSEPORT |
339 | if (setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) { | |
e1161c32 | 340 | td_verror(td, errno, "setsockopt"); |
6bedbfaf JA |
341 | return 1; |
342 | } | |
343 | #endif | |
ed92ac0c | 344 | |
b5af8293 JA |
345 | nd->addr.sin_family = AF_INET; |
346 | nd->addr.sin_addr.s_addr = htonl(INADDR_ANY); | |
347 | nd->addr.sin_port = htons(port); | |
ed92ac0c | 348 | |
b5af8293 | 349 | if (bind(fd, (struct sockaddr *) &nd->addr, sizeof(nd->addr)) < 0) { |
e1161c32 | 350 | td_verror(td, errno, "bind"); |
ed92ac0c JA |
351 | return 1; |
352 | } | |
353 | if (listen(fd, 1) < 0) { | |
e1161c32 | 354 | td_verror(td, errno, "listen"); |
ed92ac0c JA |
355 | return 1; |
356 | } | |
357 | ||
b5af8293 JA |
358 | nd->listenfd = fd; |
359 | return 0; | |
ed92ac0c JA |
360 | } |
361 | ||
9bec88e1 | 362 | static int fio_netio_init(struct thread_data *td) |
ed92ac0c | 363 | { |
b5af8293 | 364 | struct netio_data *nd = td->io_ops->data; |
e01547d2 | 365 | unsigned short port; |
b5af8293 | 366 | char host[64], buf[128]; |
ed92ac0c | 367 | char *sep; |
af52b345 | 368 | int ret; |
ed92ac0c | 369 | |
413dd459 | 370 | if (td_rw(td)) { |
ed92ac0c JA |
371 | log_err("fio: network connections must be read OR write\n"); |
372 | return 1; | |
373 | } | |
16d55aae JA |
374 | if (td_random(td)) { |
375 | log_err("fio: network IO can't be random\n"); | |
376 | return 1; | |
377 | } | |
ed92ac0c | 378 | |
2dc1bbeb | 379 | strcpy(buf, td->o.filename); |
ed92ac0c | 380 | |
9f9214f2 | 381 | sep = strchr(buf, '/'); |
ed92ac0c | 382 | if (!sep) { |
2dc1bbeb | 383 | log_err("fio: bad network host/port <<%s>>\n", td->o.filename); |
ed92ac0c JA |
384 | return 1; |
385 | } | |
386 | ||
387 | *sep = '\0'; | |
388 | sep++; | |
389 | strcpy(host, buf); | |
e01547d2 | 390 | port = atoi(sep); |
ed92ac0c | 391 | |
413dd459 | 392 | if (td_read(td)) { |
b5af8293 | 393 | nd->send_to_net = 0; |
ed92ac0c JA |
394 | ret = fio_netio_setup_listen(td, port); |
395 | } else { | |
b5af8293 | 396 | nd->send_to_net = 1; |
ed92ac0c JA |
397 | ret = fio_netio_setup_connect(td, host, port); |
398 | } | |
399 | ||
7bb48f84 | 400 | return ret; |
ed92ac0c JA |
401 | } |
402 | ||
b5af8293 | 403 | static void fio_netio_cleanup(struct thread_data *td) |
9bec88e1 | 404 | { |
b5af8293 JA |
405 | struct netio_data *nd = td->io_ops->data; |
406 | ||
407 | if (nd) { | |
64b24cd8 JA |
408 | if (nd->listenfd != -1) |
409 | close(nd->listenfd); | |
410 | if (nd->pipes[0] != -1) | |
411 | close(nd->pipes[0]); | |
412 | if (nd->pipes[1] != -1) | |
413 | close(nd->pipes[1]); | |
414 | ||
b5af8293 JA |
415 | free(nd); |
416 | td->io_ops->data = NULL; | |
417 | } | |
418 | } | |
419 | ||
420 | static int fio_netio_setup(struct thread_data *td) | |
421 | { | |
7bb48f84 | 422 | struct netio_data *nd; |
7bb48f84 JA |
423 | |
424 | if (!td->io_ops->data) { | |
425 | nd = malloc(sizeof(*nd));; | |
426 | ||
427 | memset(nd, 0, sizeof(*nd)); | |
428 | nd->listenfd = -1; | |
64b24cd8 | 429 | nd->pipes[0] = nd->pipes[1] = -1; |
7bb48f84 | 430 | td->io_ops->data = nd; |
7bb48f84 | 431 | } |
b5af8293 | 432 | |
9bec88e1 JA |
433 | return 0; |
434 | } | |
435 | ||
9cce02e8 JA |
436 | static int fio_netio_setup_splice(struct thread_data *td) |
437 | { | |
438 | struct netio_data *nd; | |
439 | ||
440 | fio_netio_setup(td); | |
441 | ||
442 | nd = td->io_ops->data; | |
443 | if (nd) { | |
444 | if (pipe(nd->pipes) < 0) | |
445 | return 1; | |
446 | ||
447 | nd->use_splice = 1; | |
448 | return 0; | |
449 | } | |
450 | ||
451 | return 1; | |
452 | } | |
453 | ||
454 | static struct ioengine_ops ioengine_rw = { | |
ed92ac0c JA |
455 | .name = "net", |
456 | .version = FIO_IOOPS_VERSION, | |
ed92ac0c JA |
457 | .prep = fio_netio_prep, |
458 | .queue = fio_netio_queue, | |
ed92ac0c | 459 | .setup = fio_netio_setup, |
9bec88e1 | 460 | .init = fio_netio_init, |
b5af8293 JA |
461 | .cleanup = fio_netio_cleanup, |
462 | .open_file = fio_netio_open_file, | |
463 | .close_file = generic_close_file, | |
464 | .flags = FIO_SYNCIO | FIO_DISKLESSIO, | |
ed92ac0c JA |
465 | }; |
466 | ||
9cce02e8 JA |
467 | static struct ioengine_ops ioengine_splice = { |
468 | .name = "netsplice", | |
469 | .version = FIO_IOOPS_VERSION, | |
470 | .prep = fio_netio_prep, | |
471 | .queue = fio_netio_queue, | |
472 | .setup = fio_netio_setup_splice, | |
473 | .init = fio_netio_init, | |
474 | .cleanup = fio_netio_cleanup, | |
475 | .open_file = fio_netio_open_file, | |
476 | .close_file = generic_close_file, | |
b67740d3 | 477 | .flags = FIO_SYNCIO | FIO_DISKLESSIO | FIO_UNIDIR, |
9cce02e8 JA |
478 | }; |
479 | ||
ed92ac0c JA |
480 | static void fio_init fio_netio_register(void) |
481 | { | |
9cce02e8 JA |
482 | register_ioengine(&ioengine_rw); |
483 | register_ioengine(&ioengine_splice); | |
ed92ac0c JA |
484 | } |
485 | ||
486 | static void fio_exit fio_netio_unregister(void) | |
487 | { | |
9cce02e8 JA |
488 | unregister_ioengine(&ioengine_rw); |
489 | unregister_ioengine(&ioengine_splice); | |
ed92ac0c | 490 | } |