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