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Merge branch 'enable-dataplacement-scheme' of https://github.com/parkvibes/fio
[fio.git] / engines / net.c
... / ...
CommitLineData
1/*
2 * net engine
3 *
4 * IO engine that reads/writes to/from sockets.
5 *
6 */
7#include <stdio.h>
8#include <stdlib.h>
9#include <unistd.h>
10#include <signal.h>
11#include <errno.h>
12#include <netinet/in.h>
13#include <netinet/tcp.h>
14#include <arpa/inet.h>
15#include <netdb.h>
16#include <poll.h>
17#include <sys/stat.h>
18#include <sys/socket.h>
19#include <sys/un.h>
20
21#ifdef CONFIG_VSOCK
22#include <linux/vm_sockets.h>
23#else
24struct sockaddr_vm {
25};
26#ifndef AF_VSOCK
27#define AF_VSOCK -1
28#endif
29#endif
30
31#include "../fio.h"
32#include "../verify.h"
33#include "../optgroup.h"
34
35struct netio_data {
36 int listenfd;
37 int use_splice;
38 int seq_off;
39 int pipes[2];
40 struct sockaddr_in addr;
41 struct sockaddr_in6 addr6;
42 struct sockaddr_un addr_un;
43 struct sockaddr_vm addr_vm;
44 uint64_t udp_send_seq;
45 uint64_t udp_recv_seq;
46};
47
48struct netio_options {
49 struct thread_data *td;
50 unsigned int port;
51 unsigned int proto;
52 unsigned int listen;
53 unsigned int pingpong;
54 unsigned int nodelay;
55 unsigned int ttl;
56 unsigned int window_size;
57 unsigned int mss;
58 char *intfc;
59};
60
61struct udp_close_msg {
62 uint32_t magic;
63 uint32_t cmd;
64};
65
66struct udp_seq {
67 uint64_t magic;
68 uint64_t seq;
69 uint64_t bs;
70};
71
72enum {
73 FIO_LINK_CLOSE = 0x89,
74 FIO_LINK_OPEN_CLOSE_MAGIC = 0x6c696e6b,
75 FIO_LINK_OPEN = 0x98,
76 FIO_UDP_SEQ_MAGIC = 0x657375716e556563ULL,
77
78 FIO_TYPE_TCP = 1,
79 FIO_TYPE_UDP = 2,
80 FIO_TYPE_UNIX = 3,
81 FIO_TYPE_TCP_V6 = 4,
82 FIO_TYPE_UDP_V6 = 5,
83 FIO_TYPE_VSOCK_STREAM = 6,
84};
85
86static int str_hostname_cb(void *data, const char *input);
87static struct fio_option options[] = {
88 {
89 .name = "hostname",
90 .lname = "net engine hostname",
91 .type = FIO_OPT_STR_STORE,
92 .cb = str_hostname_cb,
93 .help = "Hostname for net IO engine",
94 .category = FIO_OPT_C_ENGINE,
95 .group = FIO_OPT_G_NETIO,
96 },
97 {
98 .name = "port",
99 .lname = "net engine port",
100 .type = FIO_OPT_INT,
101 .off1 = offsetof(struct netio_options, port),
102 .minval = 1,
103 .maxval = 65535,
104 .help = "Port to use for TCP or UDP net connections",
105 .category = FIO_OPT_C_ENGINE,
106 .group = FIO_OPT_G_NETIO,
107 },
108 {
109 .name = "protocol",
110 .lname = "net engine protocol",
111 .alias = "proto",
112 .type = FIO_OPT_STR,
113 .off1 = offsetof(struct netio_options, proto),
114 .help = "Network protocol to use",
115 .def = "tcp",
116 .posval = {
117 { .ival = "tcp",
118 .oval = FIO_TYPE_TCP,
119 .help = "Transmission Control Protocol",
120 },
121#ifdef CONFIG_IPV6
122 { .ival = "tcpv6",
123 .oval = FIO_TYPE_TCP_V6,
124 .help = "Transmission Control Protocol V6",
125 },
126#endif
127 { .ival = "udp",
128 .oval = FIO_TYPE_UDP,
129 .help = "User Datagram Protocol",
130 },
131#ifdef CONFIG_IPV6
132 { .ival = "udpv6",
133 .oval = FIO_TYPE_UDP_V6,
134 .help = "User Datagram Protocol V6",
135 },
136#endif
137 { .ival = "unix",
138 .oval = FIO_TYPE_UNIX,
139 .help = "UNIX domain socket",
140 },
141 { .ival = "vsock",
142 .oval = FIO_TYPE_VSOCK_STREAM,
143 .help = "Virtual socket",
144 },
145 },
146 .category = FIO_OPT_C_ENGINE,
147 .group = FIO_OPT_G_NETIO,
148 },
149#ifdef CONFIG_TCP_NODELAY
150 {
151 .name = "nodelay",
152 .lname = "No Delay",
153 .type = FIO_OPT_BOOL,
154 .off1 = offsetof(struct netio_options, nodelay),
155 .help = "Use TCP_NODELAY on TCP connections",
156 .category = FIO_OPT_C_ENGINE,
157 .group = FIO_OPT_G_NETIO,
158 },
159#endif
160 {
161 .name = "listen",
162 .lname = "net engine listen",
163 .type = FIO_OPT_STR_SET,
164 .off1 = offsetof(struct netio_options, listen),
165 .help = "Listen for incoming TCP connections",
166 .category = FIO_OPT_C_ENGINE,
167 .group = FIO_OPT_G_NETIO,
168 },
169 {
170 .name = "pingpong",
171 .lname = "Ping Pong",
172 .type = FIO_OPT_STR_SET,
173 .off1 = offsetof(struct netio_options, pingpong),
174 .help = "Ping-pong IO requests",
175 .category = FIO_OPT_C_ENGINE,
176 .group = FIO_OPT_G_NETIO,
177 },
178 {
179 .name = "interface",
180 .lname = "net engine interface",
181 .type = FIO_OPT_STR_STORE,
182 .off1 = offsetof(struct netio_options, intfc),
183 .help = "Network interface to use",
184 .category = FIO_OPT_C_ENGINE,
185 .group = FIO_OPT_G_NETIO,
186 },
187 {
188 .name = "ttl",
189 .lname = "net engine multicast ttl",
190 .type = FIO_OPT_INT,
191 .off1 = offsetof(struct netio_options, ttl),
192 .def = "1",
193 .minval = 0,
194 .help = "Time-to-live value for outgoing UDP multicast packets",
195 .category = FIO_OPT_C_ENGINE,
196 .group = FIO_OPT_G_NETIO,
197 },
198#ifdef CONFIG_NET_WINDOWSIZE
199 {
200 .name = "window_size",
201 .lname = "Window Size",
202 .type = FIO_OPT_INT,
203 .off1 = offsetof(struct netio_options, window_size),
204 .minval = 0,
205 .help = "Set socket buffer window size",
206 .category = FIO_OPT_C_ENGINE,
207 .group = FIO_OPT_G_NETIO,
208 },
209#endif
210#ifdef CONFIG_NET_MSS
211 {
212 .name = "mss",
213 .lname = "Maximum segment size",
214 .type = FIO_OPT_INT,
215 .off1 = offsetof(struct netio_options, mss),
216 .minval = 0,
217 .help = "Set TCP maximum segment size",
218 .category = FIO_OPT_C_ENGINE,
219 .group = FIO_OPT_G_NETIO,
220 },
221#endif
222 {
223 .name = NULL,
224 },
225};
226
227static inline int is_udp(struct netio_options *o)
228{
229 return o->proto == FIO_TYPE_UDP || o->proto == FIO_TYPE_UDP_V6;
230}
231
232static inline int is_tcp(struct netio_options *o)
233{
234 return o->proto == FIO_TYPE_TCP || o->proto == FIO_TYPE_TCP_V6;
235}
236
237static inline int is_ipv6(struct netio_options *o)
238{
239 return o->proto == FIO_TYPE_UDP_V6 || o->proto == FIO_TYPE_TCP_V6;
240}
241
242static inline int is_vsock(struct netio_options *o)
243{
244 return o->proto == FIO_TYPE_VSOCK_STREAM;
245}
246
247static int set_window_size(struct thread_data *td, int fd)
248{
249#ifdef CONFIG_NET_WINDOWSIZE
250 struct netio_options *o = td->eo;
251 unsigned int wss;
252 int snd, rcv, ret;
253
254 if (!o->window_size)
255 return 0;
256
257 rcv = o->listen || o->pingpong;
258 snd = !o->listen || o->pingpong;
259 wss = o->window_size;
260 ret = 0;
261
262 if (rcv) {
263 ret = setsockopt(fd, SOL_SOCKET, SO_RCVBUF, (void *) &wss,
264 sizeof(wss));
265 if (ret < 0)
266 td_verror(td, errno, "rcvbuf window size");
267 }
268 if (snd && !ret) {
269 ret = setsockopt(fd, SOL_SOCKET, SO_SNDBUF, (void *) &wss,
270 sizeof(wss));
271 if (ret < 0)
272 td_verror(td, errno, "sndbuf window size");
273 }
274
275 return ret;
276#else
277 td_verror(td, -EINVAL, "setsockopt window size");
278 return -1;
279#endif
280}
281
282static int set_mss(struct thread_data *td, int fd)
283{
284#ifdef CONFIG_NET_MSS
285 struct netio_options *o = td->eo;
286 unsigned int mss;
287 int ret;
288
289 if (!o->mss || !is_tcp(o))
290 return 0;
291
292 mss = o->mss;
293 ret = setsockopt(fd, IPPROTO_TCP, TCP_MAXSEG, (void *) &mss,
294 sizeof(mss));
295 if (ret < 0)
296 td_verror(td, errno, "setsockopt TCP_MAXSEG");
297
298 return ret;
299#else
300 td_verror(td, -EINVAL, "setsockopt TCP_MAXSEG");
301 return -1;
302#endif
303}
304
305
306/*
307 * Return -1 for error and 'nr events' for a positive number
308 * of events
309 */
310static int poll_wait(struct thread_data *td, int fd, short events)
311{
312 struct pollfd pfd;
313 int ret;
314
315 while (!td->terminate) {
316 pfd.fd = fd;
317 pfd.events = events;
318 ret = poll(&pfd, 1, -1);
319 if (ret < 0) {
320 if (errno == EINTR)
321 break;
322
323 td_verror(td, errno, "poll");
324 return -1;
325 } else if (!ret)
326 continue;
327
328 break;
329 }
330
331 if (pfd.revents & events)
332 return 1;
333
334 return -1;
335}
336
337static int fio_netio_is_multicast(const char *mcaddr)
338{
339 in_addr_t addr = inet_network(mcaddr);
340 if (addr == -1)
341 return 0;
342
343 if (inet_network("224.0.0.0") <= addr &&
344 inet_network("239.255.255.255") >= addr)
345 return 1;
346
347 return 0;
348}
349
350
351static int fio_netio_prep(struct thread_data *td, struct io_u *io_u)
352{
353 struct netio_options *o = td->eo;
354
355 /*
356 * Make sure we don't see spurious reads to a receiver, and vice versa
357 */
358 if (is_tcp(o))
359 return 0;
360
361 if ((o->listen && io_u->ddir == DDIR_WRITE) ||
362 (!o->listen && io_u->ddir == DDIR_READ)) {
363 td_verror(td, EINVAL, "bad direction");
364 return 1;
365 }
366
367 return 0;
368}
369
370#ifdef CONFIG_LINUX_SPLICE
371static int splice_io_u(int fdin, int fdout, unsigned int len)
372{
373 int bytes = 0;
374
375 while (len) {
376 int ret = splice(fdin, NULL, fdout, NULL, len, 0);
377
378 if (ret < 0) {
379 if (!bytes)
380 bytes = ret;
381
382 break;
383 } else if (!ret)
384 break;
385
386 bytes += ret;
387 len -= ret;
388 }
389
390 return bytes;
391}
392
393/*
394 * Receive bytes from a socket and fill them into the internal pipe
395 */
396static int splice_in(struct thread_data *td, struct io_u *io_u)
397{
398 struct netio_data *nd = td->io_ops_data;
399
400 return splice_io_u(io_u->file->fd, nd->pipes[1], io_u->xfer_buflen);
401}
402
403/*
404 * Transmit 'len' bytes from the internal pipe
405 */
406static int splice_out(struct thread_data *td, struct io_u *io_u,
407 unsigned int len)
408{
409 struct netio_data *nd = td->io_ops_data;
410
411 return splice_io_u(nd->pipes[0], io_u->file->fd, len);
412}
413
414static int vmsplice_io_u(struct io_u *io_u, int fd, unsigned int len)
415{
416 struct iovec iov = {
417 .iov_base = io_u->xfer_buf,
418 .iov_len = len,
419 };
420 int bytes = 0;
421
422 while (iov.iov_len) {
423 int ret = vmsplice(fd, &iov, 1, SPLICE_F_MOVE);
424
425 if (ret < 0) {
426 if (!bytes)
427 bytes = ret;
428 break;
429 } else if (!ret)
430 break;
431
432 iov.iov_len -= ret;
433 iov.iov_base += ret;
434 bytes += ret;
435 }
436
437 return bytes;
438
439}
440
441/*
442 * vmsplice() pipe to io_u buffer
443 */
444static int vmsplice_io_u_out(struct thread_data *td, struct io_u *io_u,
445 unsigned int len)
446{
447 struct netio_data *nd = td->io_ops_data;
448
449 return vmsplice_io_u(io_u, nd->pipes[0], len);
450}
451
452/*
453 * vmsplice() io_u to pipe
454 */
455static int vmsplice_io_u_in(struct thread_data *td, struct io_u *io_u)
456{
457 struct netio_data *nd = td->io_ops_data;
458
459 return vmsplice_io_u(io_u, nd->pipes[1], io_u->xfer_buflen);
460}
461
462/*
463 * splice receive - transfer socket data into a pipe using splice, then map
464 * that pipe data into the io_u using vmsplice.
465 */
466static int fio_netio_splice_in(struct thread_data *td, struct io_u *io_u)
467{
468 int ret;
469
470 ret = splice_in(td, io_u);
471 if (ret > 0)
472 return vmsplice_io_u_out(td, io_u, ret);
473
474 return ret;
475}
476
477/*
478 * splice transmit - map data from the io_u into a pipe by using vmsplice,
479 * then transfer that pipe to a socket using splice.
480 */
481static int fio_netio_splice_out(struct thread_data *td, struct io_u *io_u)
482{
483 int ret;
484
485 ret = vmsplice_io_u_in(td, io_u);
486 if (ret > 0)
487 return splice_out(td, io_u, ret);
488
489 return ret;
490}
491#else
492static int fio_netio_splice_in(struct thread_data *td, struct io_u *io_u)
493{
494 errno = EOPNOTSUPP;
495 return -1;
496}
497
498static int fio_netio_splice_out(struct thread_data *td, struct io_u *io_u)
499{
500 errno = EOPNOTSUPP;
501 return -1;
502}
503#endif
504
505static void store_udp_seq(struct netio_data *nd, struct io_u *io_u)
506{
507 struct udp_seq *us;
508
509 if (io_u->xfer_buflen < sizeof(*us))
510 return;
511
512 us = io_u->xfer_buf + io_u->xfer_buflen - sizeof(*us);
513 us->magic = cpu_to_le64((uint64_t) FIO_UDP_SEQ_MAGIC);
514 us->bs = cpu_to_le64((uint64_t) io_u->xfer_buflen);
515 us->seq = cpu_to_le64(nd->udp_send_seq++);
516}
517
518static void verify_udp_seq(struct thread_data *td, struct netio_data *nd,
519 struct io_u *io_u)
520{
521 struct udp_seq *us;
522 uint64_t seq;
523
524 if (io_u->xfer_buflen < sizeof(*us))
525 return;
526
527 if (nd->seq_off)
528 return;
529
530 us = io_u->xfer_buf + io_u->xfer_buflen - sizeof(*us);
531 if (le64_to_cpu(us->magic) != FIO_UDP_SEQ_MAGIC)
532 return;
533 if (le64_to_cpu(us->bs) != io_u->xfer_buflen) {
534 nd->seq_off = 1;
535 return;
536 }
537
538 seq = le64_to_cpu(us->seq);
539
540 if (seq != nd->udp_recv_seq)
541 td->ts.drop_io_u[io_u->ddir] += seq - nd->udp_recv_seq;
542
543 nd->udp_recv_seq = seq + 1;
544}
545
546static int fio_netio_send(struct thread_data *td, struct io_u *io_u)
547{
548 struct netio_data *nd = td->io_ops_data;
549 struct netio_options *o = td->eo;
550 int ret, flags = 0;
551
552 do {
553 if (is_udp(o)) {
554 const struct sockaddr *to;
555 socklen_t len;
556
557 if (is_ipv6(o)) {
558 to = (struct sockaddr *) &nd->addr6;
559 len = sizeof(nd->addr6);
560 } else {
561 to = (struct sockaddr *) &nd->addr;
562 len = sizeof(nd->addr);
563 }
564
565 if (td->o.verify == VERIFY_NONE)
566 store_udp_seq(nd, io_u);
567
568 ret = sendto(io_u->file->fd, io_u->xfer_buf,
569 io_u->xfer_buflen, flags, to, len);
570 } else {
571 /*
572 * if we are going to write more, set MSG_MORE
573 */
574#ifdef MSG_MORE
575 if ((td->this_io_bytes[DDIR_WRITE] + io_u->xfer_buflen <
576 td->o.size) && !o->pingpong)
577 flags |= MSG_MORE;
578#endif
579 ret = send(io_u->file->fd, io_u->xfer_buf,
580 io_u->xfer_buflen, flags);
581 }
582 if (ret > 0)
583 break;
584
585 ret = poll_wait(td, io_u->file->fd, POLLOUT);
586 if (ret <= 0)
587 break;
588 } while (1);
589
590 return ret;
591}
592
593static int is_close_msg(struct io_u *io_u, int len)
594{
595 struct udp_close_msg *msg;
596
597 if (len != sizeof(struct udp_close_msg))
598 return 0;
599
600 msg = io_u->xfer_buf;
601 if (le32_to_cpu(msg->magic) != FIO_LINK_OPEN_CLOSE_MAGIC)
602 return 0;
603 if (le32_to_cpu(msg->cmd) != FIO_LINK_CLOSE)
604 return 0;
605
606 return 1;
607}
608
609static int fio_netio_recv(struct thread_data *td, struct io_u *io_u)
610{
611 struct netio_data *nd = td->io_ops_data;
612 struct netio_options *o = td->eo;
613 int ret, flags = 0;
614
615 do {
616 if (is_udp(o)) {
617 struct sockaddr *from;
618 socklen_t l, *len = &l;
619
620 if (o->listen) {
621 if (!is_ipv6(o)) {
622 from = (struct sockaddr *) &nd->addr;
623 *len = sizeof(nd->addr);
624 } else {
625 from = (struct sockaddr *) &nd->addr6;
626 *len = sizeof(nd->addr6);
627 }
628 } else {
629 from = NULL;
630 len = NULL;
631 }
632
633 ret = recvfrom(io_u->file->fd, io_u->xfer_buf,
634 io_u->xfer_buflen, flags, from, len);
635
636 if (is_close_msg(io_u, ret)) {
637 td->done = 1;
638 return 0;
639 }
640 } else {
641 ret = recv(io_u->file->fd, io_u->xfer_buf,
642 io_u->xfer_buflen, flags);
643
644 if (is_close_msg(io_u, ret)) {
645 td->done = 1;
646 return 0;
647 }
648 }
649 if (ret > 0)
650 break;
651 else if (!ret && (flags & MSG_WAITALL))
652 break;
653
654 ret = poll_wait(td, io_u->file->fd, POLLIN);
655 if (ret <= 0)
656 break;
657 flags |= MSG_WAITALL;
658 } while (1);
659
660 if (is_udp(o) && td->o.verify == VERIFY_NONE)
661 verify_udp_seq(td, nd, io_u);
662
663 return ret;
664}
665
666static enum fio_q_status __fio_netio_queue(struct thread_data *td,
667 struct io_u *io_u,
668 enum fio_ddir ddir)
669{
670 struct netio_data *nd = td->io_ops_data;
671 struct netio_options *o = td->eo;
672 int ret;
673
674 if (ddir == DDIR_WRITE) {
675 if (!nd->use_splice || is_udp(o) ||
676 o->proto == FIO_TYPE_UNIX)
677 ret = fio_netio_send(td, io_u);
678 else
679 ret = fio_netio_splice_out(td, io_u);
680 } else if (ddir == DDIR_READ) {
681 if (!nd->use_splice || is_udp(o) ||
682 o->proto == FIO_TYPE_UNIX)
683 ret = fio_netio_recv(td, io_u);
684 else
685 ret = fio_netio_splice_in(td, io_u);
686 } else
687 ret = 0; /* must be a SYNC */
688
689 if (ret != (int) io_u->xfer_buflen) {
690 if (ret > 0) {
691 io_u->resid = io_u->xfer_buflen - ret;
692 io_u->error = 0;
693 return FIO_Q_COMPLETED;
694 } else if (!ret)
695 return FIO_Q_BUSY;
696 else {
697 int err = errno;
698
699 if (ddir == DDIR_WRITE && err == EMSGSIZE)
700 return FIO_Q_BUSY;
701
702 io_u->error = err;
703 }
704 }
705
706 if (io_u->error)
707 td_verror(td, io_u->error, "xfer");
708
709 return FIO_Q_COMPLETED;
710}
711
712static enum fio_q_status fio_netio_queue(struct thread_data *td,
713 struct io_u *io_u)
714{
715 struct netio_options *o = td->eo;
716 int ret;
717
718 fio_ro_check(td, io_u);
719
720 ret = __fio_netio_queue(td, io_u, io_u->ddir);
721 if (!o->pingpong || ret != FIO_Q_COMPLETED)
722 return ret;
723
724 /*
725 * For ping-pong mode, receive or send reply as needed
726 */
727 if (td_read(td) && io_u->ddir == DDIR_READ)
728 ret = __fio_netio_queue(td, io_u, DDIR_WRITE);
729 else if (td_write(td) && io_u->ddir == DDIR_WRITE)
730 ret = __fio_netio_queue(td, io_u, DDIR_READ);
731
732 return ret;
733}
734
735static int fio_netio_connect(struct thread_data *td, struct fio_file *f)
736{
737 struct netio_data *nd = td->io_ops_data;
738 struct netio_options *o = td->eo;
739 int type, domain;
740
741 if (o->proto == FIO_TYPE_TCP) {
742 domain = AF_INET;
743 type = SOCK_STREAM;
744 } else if (o->proto == FIO_TYPE_TCP_V6) {
745 domain = AF_INET6;
746 type = SOCK_STREAM;
747 } else if (o->proto == FIO_TYPE_UDP) {
748 domain = AF_INET;
749 type = SOCK_DGRAM;
750 } else if (o->proto == FIO_TYPE_UDP_V6) {
751 domain = AF_INET6;
752 type = SOCK_DGRAM;
753 } else if (o->proto == FIO_TYPE_UNIX) {
754 domain = AF_UNIX;
755 type = SOCK_STREAM;
756 } else if (is_vsock(o)) {
757 domain = AF_VSOCK;
758 type = SOCK_STREAM;
759 } else {
760 log_err("fio: bad network type %d\n", o->proto);
761 f->fd = -1;
762 return 1;
763 }
764
765 f->fd = socket(domain, type, 0);
766 if (f->fd < 0) {
767 td_verror(td, errno, "socket");
768 return 1;
769 }
770
771#ifdef CONFIG_TCP_NODELAY
772 if (o->nodelay && is_tcp(o)) {
773 int optval = 1;
774
775 if (setsockopt(f->fd, IPPROTO_TCP, TCP_NODELAY, (void *) &optval, sizeof(int)) < 0) {
776 log_err("fio: cannot set TCP_NODELAY option on socket (%s), disable with 'nodelay=0'\n", strerror(errno));
777 return 1;
778 }
779 }
780#endif
781
782 if (set_window_size(td, f->fd)) {
783 close(f->fd);
784 return 1;
785 }
786 if (set_mss(td, f->fd)) {
787 close(f->fd);
788 return 1;
789 }
790
791 if (is_udp(o)) {
792 if (!fio_netio_is_multicast(td->o.filename))
793 return 0;
794 if (is_ipv6(o)) {
795 log_err("fio: multicast not supported on IPv6\n");
796 close(f->fd);
797 return 1;
798 }
799
800 if (o->intfc) {
801 struct in_addr interface_addr;
802
803 if (inet_aton(o->intfc, &interface_addr) == 0) {
804 log_err("fio: interface not valid interface IP\n");
805 close(f->fd);
806 return 1;
807 }
808 if (setsockopt(f->fd, IPPROTO_IP, IP_MULTICAST_IF, (const char*)&interface_addr, sizeof(interface_addr)) < 0) {
809 td_verror(td, errno, "setsockopt IP_MULTICAST_IF");
810 close(f->fd);
811 return 1;
812 }
813 }
814 if (setsockopt(f->fd, IPPROTO_IP, IP_MULTICAST_TTL, (const char*)&o->ttl, sizeof(o->ttl)) < 0) {
815 td_verror(td, errno, "setsockopt IP_MULTICAST_TTL");
816 close(f->fd);
817 return 1;
818 }
819 return 0;
820 } else if (o->proto == FIO_TYPE_TCP) {
821 socklen_t len = sizeof(nd->addr);
822
823 if (connect(f->fd, (struct sockaddr *) &nd->addr, len) < 0) {
824 td_verror(td, errno, "connect");
825 close(f->fd);
826 return 1;
827 }
828 } else if (o->proto == FIO_TYPE_TCP_V6) {
829 socklen_t len = sizeof(nd->addr6);
830
831 if (connect(f->fd, (struct sockaddr *) &nd->addr6, len) < 0) {
832 td_verror(td, errno, "connect");
833 close(f->fd);
834 return 1;
835 }
836 } else if (is_vsock(o)) {
837 socklen_t len = sizeof(nd->addr_vm);
838
839 if (connect(f->fd, (struct sockaddr *) &nd->addr_vm, len) < 0) {
840 td_verror(td, errno, "connect");
841 close(f->fd);
842 return 1;
843 }
844 } else {
845 struct sockaddr_un *addr = &nd->addr_un;
846 socklen_t len;
847
848 len = sizeof(addr->sun_family) + strlen(addr->sun_path) + 1;
849
850 if (connect(f->fd, (struct sockaddr *) addr, len) < 0) {
851 td_verror(td, errno, "connect");
852 close(f->fd);
853 return 1;
854 }
855 }
856
857 return 0;
858}
859
860static int fio_netio_accept(struct thread_data *td, struct fio_file *f)
861{
862 struct netio_data *nd = td->io_ops_data;
863 struct netio_options *o = td->eo;
864 socklen_t socklen;
865 int state;
866
867 if (is_udp(o)) {
868 f->fd = nd->listenfd;
869 return 0;
870 }
871
872 state = td->runstate;
873 td_set_runstate(td, TD_SETTING_UP);
874
875 log_info("fio: waiting for connection\n");
876
877 if (poll_wait(td, nd->listenfd, POLLIN) < 0)
878 goto err;
879
880 if (o->proto == FIO_TYPE_TCP) {
881 socklen = sizeof(nd->addr);
882 f->fd = accept(nd->listenfd, (struct sockaddr *) &nd->addr, &socklen);
883 } else if (is_vsock(o)) {
884 socklen = sizeof(nd->addr_vm);
885 f->fd = accept(nd->listenfd, (struct sockaddr *) &nd->addr_vm, &socklen);
886 } else {
887 socklen = sizeof(nd->addr6);
888 f->fd = accept(nd->listenfd, (struct sockaddr *) &nd->addr6, &socklen);
889 }
890
891 if (f->fd < 0) {
892 td_verror(td, errno, "accept");
893 goto err;
894 }
895
896#ifdef CONFIG_TCP_NODELAY
897 if (o->nodelay && is_tcp(o)) {
898 int optval = 1;
899
900 if (setsockopt(f->fd, IPPROTO_TCP, TCP_NODELAY, (void *) &optval, sizeof(int)) < 0) {
901 log_err("fio: cannot set TCP_NODELAY option on socket (%s), disable with 'nodelay=0'\n", strerror(errno));
902 return 1;
903 }
904 }
905#endif
906
907 reset_all_stats(td);
908 td_set_runstate(td, state);
909 return 0;
910err:
911 td_set_runstate(td, state);
912 return 1;
913}
914
915static void fio_netio_send_close(struct thread_data *td, struct fio_file *f)
916{
917 struct netio_data *nd = td->io_ops_data;
918 struct netio_options *o = td->eo;
919 struct udp_close_msg msg;
920 struct sockaddr *to;
921 socklen_t len;
922 int ret;
923
924 if (is_ipv6(o)) {
925 to = (struct sockaddr *) &nd->addr6;
926 len = sizeof(nd->addr6);
927 } else if (is_vsock(o)) {
928 to = NULL;
929 len = 0;
930 } else {
931 to = (struct sockaddr *) &nd->addr;
932 len = sizeof(nd->addr);
933 }
934
935 msg.magic = cpu_to_le32((uint32_t) FIO_LINK_OPEN_CLOSE_MAGIC);
936 msg.cmd = cpu_to_le32((uint32_t) FIO_LINK_CLOSE);
937
938 ret = sendto(f->fd, (void *) &msg, sizeof(msg), MSG_WAITALL, to, len);
939 if (ret < 0)
940 td_verror(td, errno, "sendto udp link close");
941}
942
943static int fio_netio_close_file(struct thread_data *td, struct fio_file *f)
944{
945 /*
946 * Notify the receiver that we are closing down the link
947 */
948 fio_netio_send_close(td, f);
949
950 return generic_close_file(td, f);
951}
952
953static int fio_netio_udp_recv_open(struct thread_data *td, struct fio_file *f)
954{
955 struct netio_data *nd = td->io_ops_data;
956 struct netio_options *o = td->eo;
957 struct udp_close_msg msg;
958 struct sockaddr *to;
959 socklen_t len;
960 int ret;
961
962 if (is_ipv6(o)) {
963 len = sizeof(nd->addr6);
964 to = (struct sockaddr *) &nd->addr6;
965 } else {
966 len = sizeof(nd->addr);
967 to = (struct sockaddr *) &nd->addr;
968 }
969
970 ret = recvfrom(f->fd, (void *) &msg, sizeof(msg), MSG_WAITALL, to, &len);
971 if (ret < 0) {
972 td_verror(td, errno, "recvfrom udp link open");
973 return ret;
974 }
975
976 if (ntohl(msg.magic) != FIO_LINK_OPEN_CLOSE_MAGIC ||
977 ntohl(msg.cmd) != FIO_LINK_OPEN) {
978 log_err("fio: bad udp open magic %x/%x\n",
979 (unsigned int) ntohl(msg.magic),
980 (unsigned int) ntohl(msg.cmd));
981 return -1;
982 }
983
984 fio_gettime(&td->start, NULL);
985 return 0;
986}
987
988static int fio_netio_send_open(struct thread_data *td, struct fio_file *f)
989{
990 struct netio_data *nd = td->io_ops_data;
991 struct netio_options *o = td->eo;
992 struct udp_close_msg msg;
993 struct sockaddr *to;
994 socklen_t len;
995 int ret;
996
997 if (is_ipv6(o)) {
998 len = sizeof(nd->addr6);
999 to = (struct sockaddr *) &nd->addr6;
1000 } else if (is_vsock(o)) {
1001 len = sizeof(nd->addr_vm);
1002 to = (struct sockaddr *) &nd->addr_vm;
1003 } else {
1004 len = sizeof(nd->addr);
1005 to = (struct sockaddr *) &nd->addr;
1006 }
1007
1008 msg.magic = htonl(FIO_LINK_OPEN_CLOSE_MAGIC);
1009 msg.cmd = htonl(FIO_LINK_OPEN);
1010
1011 ret = sendto(f->fd, (void *) &msg, sizeof(msg), MSG_WAITALL, to, len);
1012 if (ret < 0) {
1013 td_verror(td, errno, "sendto udp link open");
1014 return ret;
1015 }
1016
1017 return 0;
1018}
1019
1020static int fio_netio_open_file(struct thread_data *td, struct fio_file *f)
1021{
1022 int ret;
1023 struct netio_options *o = td->eo;
1024
1025 if (o->listen)
1026 ret = fio_netio_accept(td, f);
1027 else
1028 ret = fio_netio_connect(td, f);
1029
1030 if (ret) {
1031 f->fd = -1;
1032 return ret;
1033 }
1034
1035 if (is_udp(o)) {
1036 if (td_write(td))
1037 ret = fio_netio_send_open(td, f);
1038 else {
1039 int state;
1040
1041 state = td->runstate;
1042 td_set_runstate(td, TD_SETTING_UP);
1043 ret = fio_netio_udp_recv_open(td, f);
1044 td_set_runstate(td, state);
1045 }
1046 }
1047
1048 if (ret)
1049 fio_netio_close_file(td, f);
1050
1051 return ret;
1052}
1053
1054static int fio_fill_addr(struct thread_data *td, const char *host, int af,
1055 void *dst, struct addrinfo **res)
1056{
1057 struct netio_options *o = td->eo;
1058 struct addrinfo hints;
1059 int ret;
1060
1061 if (inet_pton(af, host, dst))
1062 return 0;
1063
1064 memset(&hints, 0, sizeof(hints));
1065
1066 if (is_tcp(o) || is_vsock(o))
1067 hints.ai_socktype = SOCK_STREAM;
1068 else
1069 hints.ai_socktype = SOCK_DGRAM;
1070
1071 if (is_ipv6(o))
1072 hints.ai_family = AF_INET6;
1073#ifdef CONFIG_VSOCK
1074 else if (is_vsock(o))
1075 hints.ai_family = AF_VSOCK;
1076#endif
1077 else
1078 hints.ai_family = AF_INET;
1079
1080 ret = getaddrinfo(host, NULL, &hints, res);
1081 if (ret) {
1082 int e = EINVAL;
1083 char str[128];
1084
1085 if (ret == EAI_SYSTEM)
1086 e = errno;
1087
1088 snprintf(str, sizeof(str), "getaddrinfo: %s", gai_strerror(ret));
1089 td_verror(td, e, str);
1090 return 1;
1091 }
1092
1093 return 0;
1094}
1095
1096static int fio_netio_setup_connect_inet(struct thread_data *td,
1097 const char *host, unsigned short port)
1098{
1099 struct netio_data *nd = td->io_ops_data;
1100 struct netio_options *o = td->eo;
1101 struct addrinfo *res = NULL;
1102 void *dst, *src;
1103 int af, len;
1104
1105 if (!host) {
1106 log_err("fio: connect with no host to connect to.\n");
1107 if (td_read(td))
1108 log_err("fio: did you forget to set 'listen'?\n");
1109
1110 td_verror(td, EINVAL, "no hostname= set");
1111 return 1;
1112 }
1113
1114 nd->addr.sin_family = AF_INET;
1115 nd->addr.sin_port = htons(port);
1116 nd->addr6.sin6_family = AF_INET6;
1117 nd->addr6.sin6_port = htons(port);
1118
1119 if (is_ipv6(o)) {
1120 af = AF_INET6;
1121 dst = &nd->addr6.sin6_addr;
1122 } else {
1123 af = AF_INET;
1124 dst = &nd->addr.sin_addr;
1125 }
1126
1127 if (fio_fill_addr(td, host, af, dst, &res))
1128 return 1;
1129
1130 if (!res)
1131 return 0;
1132
1133 if (is_ipv6(o)) {
1134 len = sizeof(nd->addr6.sin6_addr);
1135 src = &((struct sockaddr_in6 *) res->ai_addr)->sin6_addr;
1136 } else {
1137 len = sizeof(nd->addr.sin_addr);
1138 src = &((struct sockaddr_in *) res->ai_addr)->sin_addr;
1139 }
1140
1141 memcpy(dst, src, len);
1142 freeaddrinfo(res);
1143 return 0;
1144}
1145
1146static int fio_netio_setup_connect_unix(struct thread_data *td,
1147 const char *path)
1148{
1149 struct netio_data *nd = td->io_ops_data;
1150 struct sockaddr_un *soun = &nd->addr_un;
1151
1152 soun->sun_family = AF_UNIX;
1153 snprintf(soun->sun_path, sizeof(soun->sun_path), "%s", path);
1154 return 0;
1155}
1156
1157static int fio_netio_setup_connect_vsock(struct thread_data *td,
1158 const char *host, unsigned short port)
1159{
1160#ifdef CONFIG_VSOCK
1161 struct netio_data *nd = td->io_ops_data;
1162 struct sockaddr_vm *addr = &nd->addr_vm;
1163 int cid;
1164
1165 if (!host) {
1166 log_err("fio: connect with no host to connect to.\n");
1167 if (td_read(td))
1168 log_err("fio: did you forget to set 'listen'?\n");
1169
1170 td_verror(td, EINVAL, "no hostname= set");
1171 return 1;
1172 }
1173
1174 addr->svm_family = AF_VSOCK;
1175 addr->svm_port = port;
1176
1177 if (host) {
1178 cid = atoi(host);
1179 if (cid < 0 || cid > UINT32_MAX) {
1180 log_err("fio: invalid CID %d\n", cid);
1181 return 1;
1182 }
1183 addr->svm_cid = cid;
1184 }
1185
1186 return 0;
1187#else
1188 td_verror(td, -EINVAL, "vsock not supported");
1189 return 1;
1190#endif
1191}
1192
1193static int fio_netio_setup_connect(struct thread_data *td)
1194{
1195 struct netio_options *o = td->eo;
1196
1197 if (is_udp(o) || is_tcp(o))
1198 return fio_netio_setup_connect_inet(td, td->o.filename,o->port);
1199 else if (is_vsock(o))
1200 return fio_netio_setup_connect_vsock(td, td->o.filename, o->port);
1201 else
1202 return fio_netio_setup_connect_unix(td, td->o.filename);
1203}
1204
1205static int fio_netio_setup_listen_unix(struct thread_data *td, const char *path)
1206{
1207 struct netio_data *nd = td->io_ops_data;
1208 struct sockaddr_un *addr = &nd->addr_un;
1209 mode_t mode;
1210 int len, fd;
1211
1212 fd = socket(AF_UNIX, SOCK_STREAM, 0);
1213 if (fd < 0) {
1214 log_err("fio: socket: %s\n", strerror(errno));
1215 return -1;
1216 }
1217
1218 mode = umask(000);
1219
1220 addr->sun_family = AF_UNIX;
1221 snprintf(addr->sun_path, sizeof(addr->sun_path), "%s", path);
1222 unlink(path);
1223
1224 len = sizeof(addr->sun_family) + strlen(path) + 1;
1225
1226 if (bind(fd, (struct sockaddr *) addr, len) < 0) {
1227 log_err("fio: bind: %s\n", strerror(errno));
1228 close(fd);
1229 return -1;
1230 }
1231
1232 umask(mode);
1233 nd->listenfd = fd;
1234 return 0;
1235}
1236
1237static int fio_netio_setup_listen_inet(struct thread_data *td, short port)
1238{
1239 struct netio_data *nd = td->io_ops_data;
1240 struct netio_options *o = td->eo;
1241 struct ip_mreq mr;
1242 struct sockaddr_in sin;
1243 struct sockaddr *saddr;
1244 int fd, opt, type, domain;
1245 socklen_t len;
1246
1247 memset(&sin, 0, sizeof(sin));
1248
1249 if (o->proto == FIO_TYPE_TCP) {
1250 type = SOCK_STREAM;
1251 domain = AF_INET;
1252 } else if (o->proto == FIO_TYPE_TCP_V6) {
1253 type = SOCK_STREAM;
1254 domain = AF_INET6;
1255 } else if (o->proto == FIO_TYPE_UDP) {
1256 type = SOCK_DGRAM;
1257 domain = AF_INET;
1258 } else if (o->proto == FIO_TYPE_UDP_V6) {
1259 type = SOCK_DGRAM;
1260 domain = AF_INET6;
1261 } else {
1262 log_err("fio: unknown proto %d\n", o->proto);
1263 return 1;
1264 }
1265
1266 fd = socket(domain, type, 0);
1267 if (fd < 0) {
1268 td_verror(td, errno, "socket");
1269 return 1;
1270 }
1271
1272 opt = 1;
1273 if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (void *) &opt, sizeof(opt)) < 0) {
1274 td_verror(td, errno, "setsockopt");
1275 close(fd);
1276 return 1;
1277 }
1278#ifdef SO_REUSEPORT
1279 if (setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, (void *) &opt, sizeof(opt)) < 0) {
1280 td_verror(td, errno, "setsockopt");
1281 close(fd);
1282 return 1;
1283 }
1284#endif
1285
1286 if (set_window_size(td, fd)) {
1287 close(fd);
1288 return 1;
1289 }
1290 if (set_mss(td, fd)) {
1291 close(fd);
1292 return 1;
1293 }
1294
1295 if (td->o.filename) {
1296 if (!is_udp(o) || !fio_netio_is_multicast(td->o.filename)) {
1297 log_err("fio: hostname not valid for non-multicast inbound network IO\n");
1298 close(fd);
1299 return 1;
1300 }
1301 if (is_ipv6(o)) {
1302 log_err("fio: IPv6 not supported for multicast network IO\n");
1303 close(fd);
1304 return 1;
1305 }
1306
1307 inet_aton(td->o.filename, &sin.sin_addr);
1308
1309 mr.imr_multiaddr = sin.sin_addr;
1310 if (o->intfc) {
1311 if (inet_aton(o->intfc, &mr.imr_interface) == 0) {
1312 log_err("fio: interface not valid interface IP\n");
1313 close(fd);
1314 return 1;
1315 }
1316 } else {
1317 mr.imr_interface.s_addr = htonl(INADDR_ANY);
1318 }
1319
1320 if (setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, (const char*)&mr, sizeof(mr)) < 0) {
1321 td_verror(td, errno, "setsockopt IP_ADD_MEMBERSHIP");
1322 close(fd);
1323 return 1;
1324 }
1325 }
1326
1327 if (!is_ipv6(o)) {
1328 saddr = (struct sockaddr *) &nd->addr;
1329 len = sizeof(nd->addr);
1330
1331 nd->addr.sin_family = AF_INET;
1332 nd->addr.sin_addr.s_addr = sin.sin_addr.s_addr ? sin.sin_addr.s_addr : htonl(INADDR_ANY);
1333 nd->addr.sin_port = htons(port);
1334 } else {
1335 saddr = (struct sockaddr *) &nd->addr6;
1336 len = sizeof(nd->addr6);
1337
1338 nd->addr6.sin6_family = AF_INET6;
1339 nd->addr6.sin6_addr = in6addr_any;
1340 nd->addr6.sin6_port = htons(port);
1341 }
1342
1343 if (bind(fd, saddr, len) < 0) {
1344 close(fd);
1345 td_verror(td, errno, "bind");
1346 return 1;
1347 }
1348
1349 nd->listenfd = fd;
1350 return 0;
1351}
1352
1353static int fio_netio_setup_listen_vsock(struct thread_data *td, short port, int type)
1354{
1355#ifdef CONFIG_VSOCK
1356 struct netio_data *nd = td->io_ops_data;
1357 struct sockaddr_vm *addr = &nd->addr_vm;
1358 int fd, opt;
1359 socklen_t len;
1360
1361 fd = socket(AF_VSOCK, type, 0);
1362 if (fd < 0) {
1363 td_verror(td, errno, "socket");
1364 return 1;
1365 }
1366
1367 opt = 1;
1368 if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (void *) &opt, sizeof(opt)) < 0) {
1369 td_verror(td, errno, "setsockopt");
1370 close(fd);
1371 return 1;
1372 }
1373
1374 len = sizeof(*addr);
1375
1376 nd->addr_vm.svm_family = AF_VSOCK;
1377 nd->addr_vm.svm_cid = VMADDR_CID_ANY;
1378 nd->addr_vm.svm_port = port;
1379
1380 if (bind(fd, (struct sockaddr *) addr, len) < 0) {
1381 td_verror(td, errno, "bind");
1382 close(fd);
1383 return 1;
1384 }
1385
1386 nd->listenfd = fd;
1387 return 0;
1388#else
1389 td_verror(td, -EINVAL, "vsock not supported");
1390 return -1;
1391#endif
1392}
1393
1394static int fio_netio_setup_listen(struct thread_data *td)
1395{
1396 struct netio_data *nd = td->io_ops_data;
1397 struct netio_options *o = td->eo;
1398 int ret;
1399
1400 if (is_udp(o) || is_tcp(o))
1401 ret = fio_netio_setup_listen_inet(td, o->port);
1402 else if (is_vsock(o))
1403 ret = fio_netio_setup_listen_vsock(td, o->port, SOCK_STREAM);
1404 else
1405 ret = fio_netio_setup_listen_unix(td, td->o.filename);
1406
1407 if (ret)
1408 return ret;
1409 if (is_udp(o))
1410 return 0;
1411
1412 if (listen(nd->listenfd, 10) < 0) {
1413 td_verror(td, errno, "listen");
1414 nd->listenfd = -1;
1415 return 1;
1416 }
1417
1418 return 0;
1419}
1420
1421static int fio_netio_init(struct thread_data *td)
1422{
1423 struct netio_options *o = td->eo;
1424 int ret;
1425
1426#ifdef WIN32
1427 WSADATA wsd;
1428 WSAStartup(MAKEWORD(2,2), &wsd);
1429#endif
1430
1431 if (td_random(td)) {
1432 log_err("fio: network IO can't be random\n");
1433 return 1;
1434 }
1435
1436 if (o->proto == FIO_TYPE_UNIX && o->port) {
1437 log_err("fio: network IO port not valid with unix socket\n");
1438 return 1;
1439 } else if (is_vsock(o) && !o->port) {
1440 log_err("fio: network IO requires port for vsock\n");
1441 return 1;
1442 } else if (o->proto != FIO_TYPE_UNIX && !o->port) {
1443 log_err("fio: network IO requires port for tcp or udp\n");
1444 return 1;
1445 }
1446
1447 o->port += td->subjob_number;
1448
1449 if (!is_tcp(o) && !is_vsock(o)) {
1450 if (o->listen) {
1451 log_err("fio: listen only valid for TCP proto IO\n");
1452 return 1;
1453 }
1454 if (td_rw(td)) {
1455 log_err("fio: datagram network connections must be"
1456 " read OR write\n");
1457 return 1;
1458 }
1459 if (o->proto == FIO_TYPE_UNIX && !td->o.filename) {
1460 log_err("fio: UNIX sockets need host/filename\n");
1461 return 1;
1462 }
1463 o->listen = td_read(td);
1464 }
1465
1466 if (o->listen)
1467 ret = fio_netio_setup_listen(td);
1468 else
1469 ret = fio_netio_setup_connect(td);
1470
1471 return ret;
1472}
1473
1474static void fio_netio_cleanup(struct thread_data *td)
1475{
1476 struct netio_data *nd = td->io_ops_data;
1477
1478 if (nd) {
1479 if (nd->listenfd != -1)
1480 close(nd->listenfd);
1481 if (nd->pipes[0] != -1)
1482 close(nd->pipes[0]);
1483 if (nd->pipes[1] != -1)
1484 close(nd->pipes[1]);
1485
1486 free(nd);
1487 }
1488}
1489
1490static int fio_netio_setup(struct thread_data *td)
1491{
1492 struct netio_data *nd;
1493
1494 if (!td->files_index) {
1495 add_file(td, td->o.filename ?: "net", 0, 0);
1496 td->o.nr_files = td->o.nr_files ?: 1;
1497 td->o.open_files++;
1498 }
1499
1500 if (!td->io_ops_data) {
1501 nd = calloc(1, sizeof(*nd));
1502 nd->listenfd = -1;
1503 nd->pipes[0] = nd->pipes[1] = -1;
1504 td->io_ops_data = nd;
1505 }
1506
1507 return 0;
1508}
1509
1510static void fio_netio_terminate(struct thread_data *td)
1511{
1512 kill(td->pid, SIGTERM);
1513}
1514
1515#ifdef CONFIG_LINUX_SPLICE
1516static int fio_netio_setup_splice(struct thread_data *td)
1517{
1518 struct netio_data *nd;
1519
1520 fio_netio_setup(td);
1521
1522 nd = td->io_ops_data;
1523 if (nd) {
1524 if (pipe(nd->pipes) < 0)
1525 return 1;
1526
1527 nd->use_splice = 1;
1528 return 0;
1529 }
1530
1531 return 1;
1532}
1533
1534static struct ioengine_ops ioengine_splice = {
1535 .name = "netsplice",
1536 .version = FIO_IOOPS_VERSION,
1537 .prep = fio_netio_prep,
1538 .queue = fio_netio_queue,
1539 .setup = fio_netio_setup_splice,
1540 .init = fio_netio_init,
1541 .cleanup = fio_netio_cleanup,
1542 .open_file = fio_netio_open_file,
1543 .close_file = fio_netio_close_file,
1544 .terminate = fio_netio_terminate,
1545 .options = options,
1546 .option_struct_size = sizeof(struct netio_options),
1547 .flags = FIO_SYNCIO | FIO_DISKLESSIO | FIO_UNIDIR |
1548 FIO_PIPEIO,
1549};
1550#endif
1551
1552static struct ioengine_ops ioengine_rw = {
1553 .name = "net",
1554 .version = FIO_IOOPS_VERSION,
1555 .prep = fio_netio_prep,
1556 .queue = fio_netio_queue,
1557 .setup = fio_netio_setup,
1558 .init = fio_netio_init,
1559 .cleanup = fio_netio_cleanup,
1560 .open_file = fio_netio_open_file,
1561 .close_file = fio_netio_close_file,
1562 .terminate = fio_netio_terminate,
1563 .options = options,
1564 .option_struct_size = sizeof(struct netio_options),
1565 .flags = FIO_SYNCIO | FIO_DISKLESSIO | FIO_UNIDIR |
1566 FIO_PIPEIO | FIO_BIT_BASED,
1567};
1568
1569static int str_hostname_cb(void *data, const char *input)
1570{
1571 struct netio_options *o = data;
1572
1573 if (o->td->o.filename)
1574 free(o->td->o.filename);
1575 o->td->o.filename = strdup(input);
1576 return 0;
1577}
1578
1579static void fio_init fio_netio_register(void)
1580{
1581 register_ioengine(&ioengine_rw);
1582#ifdef CONFIG_LINUX_SPLICE
1583 register_ioengine(&ioengine_splice);
1584#endif
1585}
1586
1587static void fio_exit fio_netio_unregister(void)
1588{
1589 unregister_ioengine(&ioengine_rw);
1590#ifdef CONFIG_LINUX_SPLICE
1591 unregister_ioengine(&ioengine_splice);
1592#endif
1593}
fio - Flexible IO Tester