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glusterfs: update for new API
[fio.git] / engines / net.c
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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#include "../fio.h"
22#include "../verify.h"
23#include "../optgroup.h"
24
25struct netio_data {
26 int listenfd;
27 int use_splice;
28 int seq_off;
29 int pipes[2];
30 struct sockaddr_in addr;
31 struct sockaddr_in6 addr6;
32 struct sockaddr_un addr_un;
33 uint64_t udp_send_seq;
34 uint64_t udp_recv_seq;
35};
36
37struct netio_options {
38 struct thread_data *td;
39 unsigned int port;
40 unsigned int proto;
41 unsigned int listen;
42 unsigned int pingpong;
43 unsigned int nodelay;
44 unsigned int ttl;
45 unsigned int window_size;
46 unsigned int mss;
47 char *intfc;
48};
49
50struct udp_close_msg {
51 uint32_t magic;
52 uint32_t cmd;
53};
54
55struct udp_seq {
56 uint64_t magic;
57 uint64_t seq;
58 uint64_t bs;
59};
60
61enum {
62 FIO_LINK_CLOSE = 0x89,
63 FIO_LINK_OPEN_CLOSE_MAGIC = 0x6c696e6b,
64 FIO_LINK_OPEN = 0x98,
65 FIO_UDP_SEQ_MAGIC = 0x657375716e556563ULL,
66
67 FIO_TYPE_TCP = 1,
68 FIO_TYPE_UDP = 2,
69 FIO_TYPE_UNIX = 3,
70 FIO_TYPE_TCP_V6 = 4,
71 FIO_TYPE_UDP_V6 = 5,
72};
73
74static int str_hostname_cb(void *data, const char *input);
75static struct fio_option options[] = {
76 {
77 .name = "hostname",
78 .lname = "net engine hostname",
79 .type = FIO_OPT_STR_STORE,
80 .cb = str_hostname_cb,
81 .help = "Hostname for net IO engine",
82 .category = FIO_OPT_C_ENGINE,
83 .group = FIO_OPT_G_NETIO,
84 },
85 {
86 .name = "port",
87 .lname = "net engine port",
88 .type = FIO_OPT_INT,
89 .off1 = offsetof(struct netio_options, port),
90 .minval = 1,
91 .maxval = 65535,
92 .help = "Port to use for TCP or UDP net connections",
93 .category = FIO_OPT_C_ENGINE,
94 .group = FIO_OPT_G_NETIO,
95 },
96 {
97 .name = "protocol",
98 .lname = "net engine protocol",
99 .alias = "proto",
100 .type = FIO_OPT_STR,
101 .off1 = offsetof(struct netio_options, proto),
102 .help = "Network protocol to use",
103 .def = "tcp",
104 .posval = {
105 { .ival = "tcp",
106 .oval = FIO_TYPE_TCP,
107 .help = "Transmission Control Protocol",
108 },
109#ifdef CONFIG_IPV6
110 { .ival = "tcpv6",
111 .oval = FIO_TYPE_TCP_V6,
112 .help = "Transmission Control Protocol V6",
113 },
114#endif
115 { .ival = "udp",
116 .oval = FIO_TYPE_UDP,
117 .help = "User Datagram Protocol",
118 },
119#ifdef CONFIG_IPV6
120 { .ival = "udpv6",
121 .oval = FIO_TYPE_UDP_V6,
122 .help = "User Datagram Protocol V6",
123 },
124#endif
125 { .ival = "unix",
126 .oval = FIO_TYPE_UNIX,
127 .help = "UNIX domain socket",
128 },
129 },
130 .category = FIO_OPT_C_ENGINE,
131 .group = FIO_OPT_G_NETIO,
132 },
133#ifdef CONFIG_TCP_NODELAY
134 {
135 .name = "nodelay",
136 .lname = "No Delay",
137 .type = FIO_OPT_BOOL,
138 .off1 = offsetof(struct netio_options, nodelay),
139 .help = "Use TCP_NODELAY on TCP connections",
140 .category = FIO_OPT_C_ENGINE,
141 .group = FIO_OPT_G_NETIO,
142 },
143#endif
144 {
145 .name = "listen",
146 .lname = "net engine listen",
147 .type = FIO_OPT_STR_SET,
148 .off1 = offsetof(struct netio_options, listen),
149 .help = "Listen for incoming TCP connections",
150 .category = FIO_OPT_C_ENGINE,
151 .group = FIO_OPT_G_NETIO,
152 },
153 {
154 .name = "pingpong",
155 .lname = "Ping Pong",
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 enum fio_q_status __fio_netio_queue(struct thread_data *td,
646 struct io_u *io_u,
647 enum fio_ddir ddir)
648{
649 struct netio_data *nd = td->io_ops_data;
650 struct netio_options *o = td->eo;
651 int ret;
652
653 if (ddir == DDIR_WRITE) {
654 if (!nd->use_splice || is_udp(o) ||
655 o->proto == FIO_TYPE_UNIX)
656 ret = fio_netio_send(td, io_u);
657 else
658 ret = fio_netio_splice_out(td, io_u);
659 } else if (ddir == DDIR_READ) {
660 if (!nd->use_splice || is_udp(o) ||
661 o->proto == FIO_TYPE_UNIX)
662 ret = fio_netio_recv(td, io_u);
663 else
664 ret = fio_netio_splice_in(td, io_u);
665 } else
666 ret = 0; /* must be a SYNC */
667
668 if (ret != (int) io_u->xfer_buflen) {
669 if (ret > 0) {
670 io_u->resid = io_u->xfer_buflen - ret;
671 io_u->error = 0;
672 return FIO_Q_COMPLETED;
673 } else if (!ret)
674 return FIO_Q_BUSY;
675 else {
676 int err = errno;
677
678 if (ddir == DDIR_WRITE && err == EMSGSIZE)
679 return FIO_Q_BUSY;
680
681 io_u->error = err;
682 }
683 }
684
685 if (io_u->error)
686 td_verror(td, io_u->error, "xfer");
687
688 return FIO_Q_COMPLETED;
689}
690
691static enum fio_q_status fio_netio_queue(struct thread_data *td,
692 struct io_u *io_u)
693{
694 struct netio_options *o = td->eo;
695 int ret;
696
697 fio_ro_check(td, io_u);
698
699 ret = __fio_netio_queue(td, io_u, io_u->ddir);
700 if (!o->pingpong || ret != FIO_Q_COMPLETED)
701 return ret;
702
703 /*
704 * For ping-pong mode, receive or send reply as needed
705 */
706 if (td_read(td) && io_u->ddir == DDIR_READ)
707 ret = __fio_netio_queue(td, io_u, DDIR_WRITE);
708 else if (td_write(td) && io_u->ddir == DDIR_WRITE)
709 ret = __fio_netio_queue(td, io_u, DDIR_READ);
710
711 return ret;
712}
713
714static int fio_netio_connect(struct thread_data *td, struct fio_file *f)
715{
716 struct netio_data *nd = td->io_ops_data;
717 struct netio_options *o = td->eo;
718 int type, domain;
719
720 if (o->proto == FIO_TYPE_TCP) {
721 domain = AF_INET;
722 type = SOCK_STREAM;
723 } else if (o->proto == FIO_TYPE_TCP_V6) {
724 domain = AF_INET6;
725 type = SOCK_STREAM;
726 } else if (o->proto == FIO_TYPE_UDP) {
727 domain = AF_INET;
728 type = SOCK_DGRAM;
729 } else if (o->proto == FIO_TYPE_UDP_V6) {
730 domain = AF_INET6;
731 type = SOCK_DGRAM;
732 } else if (o->proto == FIO_TYPE_UNIX) {
733 domain = AF_UNIX;
734 type = SOCK_STREAM;
735 } else {
736 log_err("fio: bad network type %d\n", o->proto);
737 f->fd = -1;
738 return 1;
739 }
740
741 f->fd = socket(domain, type, 0);
742 if (f->fd < 0) {
743 td_verror(td, errno, "socket");
744 return 1;
745 }
746
747#ifdef CONFIG_TCP_NODELAY
748 if (o->nodelay && is_tcp(o)) {
749 int optval = 1;
750
751 if (setsockopt(f->fd, IPPROTO_TCP, TCP_NODELAY, (void *) &optval, sizeof(int)) < 0) {
752 log_err("fio: cannot set TCP_NODELAY option on socket (%s), disable with 'nodelay=0'\n", strerror(errno));
753 return 1;
754 }
755 }
756#endif
757
758 if (set_window_size(td, f->fd)) {
759 close(f->fd);
760 return 1;
761 }
762 if (set_mss(td, f->fd)) {
763 close(f->fd);
764 return 1;
765 }
766
767 if (is_udp(o)) {
768 if (!fio_netio_is_multicast(td->o.filename))
769 return 0;
770 if (is_ipv6(o)) {
771 log_err("fio: multicast not supported on IPv6\n");
772 close(f->fd);
773 return 1;
774 }
775
776 if (o->intfc) {
777 struct in_addr interface_addr;
778
779 if (inet_aton(o->intfc, &interface_addr) == 0) {
780 log_err("fio: interface not valid interface IP\n");
781 close(f->fd);
782 return 1;
783 }
784 if (setsockopt(f->fd, IPPROTO_IP, IP_MULTICAST_IF, (const char*)&interface_addr, sizeof(interface_addr)) < 0) {
785 td_verror(td, errno, "setsockopt IP_MULTICAST_IF");
786 close(f->fd);
787 return 1;
788 }
789 }
790 if (setsockopt(f->fd, IPPROTO_IP, IP_MULTICAST_TTL, (const char*)&o->ttl, sizeof(o->ttl)) < 0) {
791 td_verror(td, errno, "setsockopt IP_MULTICAST_TTL");
792 close(f->fd);
793 return 1;
794 }
795 return 0;
796 } else if (o->proto == FIO_TYPE_TCP) {
797 socklen_t len = sizeof(nd->addr);
798
799 if (connect(f->fd, (struct sockaddr *) &nd->addr, len) < 0) {
800 td_verror(td, errno, "connect");
801 close(f->fd);
802 return 1;
803 }
804 } else if (o->proto == FIO_TYPE_TCP_V6) {
805 socklen_t len = sizeof(nd->addr6);
806
807 if (connect(f->fd, (struct sockaddr *) &nd->addr6, len) < 0) {
808 td_verror(td, errno, "connect");
809 close(f->fd);
810 return 1;
811 }
812
813 } else {
814 struct sockaddr_un *addr = &nd->addr_un;
815 socklen_t len;
816
817 len = sizeof(addr->sun_family) + strlen(addr->sun_path) + 1;
818
819 if (connect(f->fd, (struct sockaddr *) addr, len) < 0) {
820 td_verror(td, errno, "connect");
821 close(f->fd);
822 return 1;
823 }
824 }
825
826 return 0;
827}
828
829static int fio_netio_accept(struct thread_data *td, struct fio_file *f)
830{
831 struct netio_data *nd = td->io_ops_data;
832 struct netio_options *o = td->eo;
833 socklen_t socklen;
834 int state;
835
836 if (is_udp(o)) {
837 f->fd = nd->listenfd;
838 return 0;
839 }
840
841 state = td->runstate;
842 td_set_runstate(td, TD_SETTING_UP);
843
844 log_info("fio: waiting for connection\n");
845
846 if (poll_wait(td, nd->listenfd, POLLIN) < 0)
847 goto err;
848
849 if (o->proto == FIO_TYPE_TCP) {
850 socklen = sizeof(nd->addr);
851 f->fd = accept(nd->listenfd, (struct sockaddr *) &nd->addr, &socklen);
852 } else {
853 socklen = sizeof(nd->addr6);
854 f->fd = accept(nd->listenfd, (struct sockaddr *) &nd->addr6, &socklen);
855 }
856
857 if (f->fd < 0) {
858 td_verror(td, errno, "accept");
859 goto err;
860 }
861
862#ifdef CONFIG_TCP_NODELAY
863 if (o->nodelay && is_tcp(o)) {
864 int optval = 1;
865
866 if (setsockopt(f->fd, IPPROTO_TCP, TCP_NODELAY, (void *) &optval, sizeof(int)) < 0) {
867 log_err("fio: cannot set TCP_NODELAY option on socket (%s), disable with 'nodelay=0'\n", strerror(errno));
868 return 1;
869 }
870 }
871#endif
872
873 reset_all_stats(td);
874 td_set_runstate(td, state);
875 return 0;
876err:
877 td_set_runstate(td, state);
878 return 1;
879}
880
881static void fio_netio_send_close(struct thread_data *td, struct fio_file *f)
882{
883 struct netio_data *nd = td->io_ops_data;
884 struct netio_options *o = td->eo;
885 struct udp_close_msg msg;
886 struct sockaddr *to;
887 socklen_t len;
888 int ret;
889
890 if (is_ipv6(o)) {
891 to = (struct sockaddr *) &nd->addr6;
892 len = sizeof(nd->addr6);
893 } else {
894 to = (struct sockaddr *) &nd->addr;
895 len = sizeof(nd->addr);
896 }
897
898 msg.magic = cpu_to_le32((uint32_t) FIO_LINK_OPEN_CLOSE_MAGIC);
899 msg.cmd = cpu_to_le32((uint32_t) FIO_LINK_CLOSE);
900
901 ret = sendto(f->fd, (void *) &msg, sizeof(msg), MSG_WAITALL, to, len);
902 if (ret < 0)
903 td_verror(td, errno, "sendto udp link close");
904}
905
906static int fio_netio_close_file(struct thread_data *td, struct fio_file *f)
907{
908 /*
909 * Notify the receiver that we are closing down the link
910 */
911 fio_netio_send_close(td, f);
912
913 return generic_close_file(td, f);
914}
915
916static int fio_netio_udp_recv_open(struct thread_data *td, struct fio_file *f)
917{
918 struct netio_data *nd = td->io_ops_data;
919 struct netio_options *o = td->eo;
920 struct udp_close_msg msg;
921 struct sockaddr *to;
922 socklen_t len;
923 int ret;
924
925 if (is_ipv6(o)) {
926 len = sizeof(nd->addr6);
927 to = (struct sockaddr *) &nd->addr6;
928 } else {
929 len = sizeof(nd->addr);
930 to = (struct sockaddr *) &nd->addr;
931 }
932
933 ret = recvfrom(f->fd, (void *) &msg, sizeof(msg), MSG_WAITALL, to, &len);
934 if (ret < 0) {
935 td_verror(td, errno, "recvfrom udp link open");
936 return ret;
937 }
938
939 if (ntohl(msg.magic) != FIO_LINK_OPEN_CLOSE_MAGIC ||
940 ntohl(msg.cmd) != FIO_LINK_OPEN) {
941 log_err("fio: bad udp open magic %x/%x\n", ntohl(msg.magic),
942 ntohl(msg.cmd));
943 return -1;
944 }
945
946 fio_gettime(&td->start, NULL);
947 return 0;
948}
949
950static int fio_netio_send_open(struct thread_data *td, struct fio_file *f)
951{
952 struct netio_data *nd = td->io_ops_data;
953 struct netio_options *o = td->eo;
954 struct udp_close_msg msg;
955 struct sockaddr *to;
956 socklen_t len;
957 int ret;
958
959 if (is_ipv6(o)) {
960 len = sizeof(nd->addr6);
961 to = (struct sockaddr *) &nd->addr6;
962 } else {
963 len = sizeof(nd->addr);
964 to = (struct sockaddr *) &nd->addr;
965 }
966
967 msg.magic = htonl(FIO_LINK_OPEN_CLOSE_MAGIC);
968 msg.cmd = htonl(FIO_LINK_OPEN);
969
970 ret = sendto(f->fd, (void *) &msg, sizeof(msg), MSG_WAITALL, to, len);
971 if (ret < 0) {
972 td_verror(td, errno, "sendto udp link open");
973 return ret;
974 }
975
976 return 0;
977}
978
979static int fio_netio_open_file(struct thread_data *td, struct fio_file *f)
980{
981 int ret;
982 struct netio_options *o = td->eo;
983
984 if (o->listen)
985 ret = fio_netio_accept(td, f);
986 else
987 ret = fio_netio_connect(td, f);
988
989 if (ret) {
990 f->fd = -1;
991 return ret;
992 }
993
994 if (is_udp(o)) {
995 if (td_write(td))
996 ret = fio_netio_send_open(td, f);
997 else {
998 int state;
999
1000 state = td->runstate;
1001 td_set_runstate(td, TD_SETTING_UP);
1002 ret = fio_netio_udp_recv_open(td, f);
1003 td_set_runstate(td, state);
1004 }
1005 }
1006
1007 if (ret)
1008 fio_netio_close_file(td, f);
1009
1010 return ret;
1011}
1012
1013static int fio_fill_addr(struct thread_data *td, const char *host, int af,
1014 void *dst, struct addrinfo **res)
1015{
1016 struct netio_options *o = td->eo;
1017 struct addrinfo hints;
1018 int ret;
1019
1020 if (inet_pton(af, host, dst))
1021 return 0;
1022
1023 memset(&hints, 0, sizeof(hints));
1024
1025 if (is_tcp(o))
1026 hints.ai_socktype = SOCK_STREAM;
1027 else
1028 hints.ai_socktype = SOCK_DGRAM;
1029
1030 if (is_ipv6(o))
1031 hints.ai_family = AF_INET6;
1032 else
1033 hints.ai_family = AF_INET;
1034
1035 ret = getaddrinfo(host, NULL, &hints, res);
1036 if (ret) {
1037 int e = EINVAL;
1038 char str[128];
1039
1040 if (ret == EAI_SYSTEM)
1041 e = errno;
1042
1043 snprintf(str, sizeof(str), "getaddrinfo: %s", gai_strerror(ret));
1044 td_verror(td, e, str);
1045 return 1;
1046 }
1047
1048 return 0;
1049}
1050
1051static int fio_netio_setup_connect_inet(struct thread_data *td,
1052 const char *host, unsigned short port)
1053{
1054 struct netio_data *nd = td->io_ops_data;
1055 struct netio_options *o = td->eo;
1056 struct addrinfo *res = NULL;
1057 void *dst, *src;
1058 int af, len;
1059
1060 if (!host) {
1061 log_err("fio: connect with no host to connect to.\n");
1062 if (td_read(td))
1063 log_err("fio: did you forget to set 'listen'?\n");
1064
1065 td_verror(td, EINVAL, "no hostname= set");
1066 return 1;
1067 }
1068
1069 nd->addr.sin_family = AF_INET;
1070 nd->addr.sin_port = htons(port);
1071 nd->addr6.sin6_family = AF_INET6;
1072 nd->addr6.sin6_port = htons(port);
1073
1074 if (is_ipv6(o)) {
1075 af = AF_INET6;
1076 dst = &nd->addr6.sin6_addr;
1077 } else {
1078 af = AF_INET;
1079 dst = &nd->addr.sin_addr;
1080 }
1081
1082 if (fio_fill_addr(td, host, af, dst, &res))
1083 return 1;
1084
1085 if (!res)
1086 return 0;
1087
1088 if (is_ipv6(o)) {
1089 len = sizeof(nd->addr6.sin6_addr);
1090 src = &((struct sockaddr_in6 *) res->ai_addr)->sin6_addr;
1091 } else {
1092 len = sizeof(nd->addr.sin_addr);
1093 src = &((struct sockaddr_in *) res->ai_addr)->sin_addr;
1094 }
1095
1096 memcpy(dst, src, len);
1097 freeaddrinfo(res);
1098 return 0;
1099}
1100
1101static int fio_netio_setup_connect_unix(struct thread_data *td,
1102 const char *path)
1103{
1104 struct netio_data *nd = td->io_ops_data;
1105 struct sockaddr_un *soun = &nd->addr_un;
1106
1107 soun->sun_family = AF_UNIX;
1108 memset(soun->sun_path, 0, sizeof(soun->sun_path));
1109 strncpy(soun->sun_path, path, sizeof(soun->sun_path) - 1);
1110 return 0;
1111}
1112
1113static int fio_netio_setup_connect(struct thread_data *td)
1114{
1115 struct netio_options *o = td->eo;
1116
1117 if (is_udp(o) || is_tcp(o))
1118 return fio_netio_setup_connect_inet(td, td->o.filename,o->port);
1119 else
1120 return fio_netio_setup_connect_unix(td, td->o.filename);
1121}
1122
1123static int fio_netio_setup_listen_unix(struct thread_data *td, const char *path)
1124{
1125 struct netio_data *nd = td->io_ops_data;
1126 struct sockaddr_un *addr = &nd->addr_un;
1127 mode_t mode;
1128 int len, fd;
1129
1130 fd = socket(AF_UNIX, SOCK_STREAM, 0);
1131 if (fd < 0) {
1132 log_err("fio: socket: %s\n", strerror(errno));
1133 return -1;
1134 }
1135
1136 mode = umask(000);
1137
1138 memset(addr, 0, sizeof(*addr));
1139 addr->sun_family = AF_UNIX;
1140 strncpy(addr->sun_path, path, sizeof(addr->sun_path) - 1);
1141 unlink(path);
1142
1143 len = sizeof(addr->sun_family) + strlen(path) + 1;
1144
1145 if (bind(fd, (struct sockaddr *) addr, len) < 0) {
1146 log_err("fio: bind: %s\n", strerror(errno));
1147 close(fd);
1148 return -1;
1149 }
1150
1151 umask(mode);
1152 nd->listenfd = fd;
1153 return 0;
1154}
1155
1156static int fio_netio_setup_listen_inet(struct thread_data *td, short port)
1157{
1158 struct netio_data *nd = td->io_ops_data;
1159 struct netio_options *o = td->eo;
1160 struct ip_mreq mr;
1161 struct sockaddr_in sin;
1162 struct sockaddr *saddr;
1163 int fd, opt, type, domain;
1164 socklen_t len;
1165
1166 memset(&sin, 0, sizeof(sin));
1167
1168 if (o->proto == FIO_TYPE_TCP) {
1169 type = SOCK_STREAM;
1170 domain = AF_INET;
1171 } else if (o->proto == FIO_TYPE_TCP_V6) {
1172 type = SOCK_STREAM;
1173 domain = AF_INET6;
1174 } else if (o->proto == FIO_TYPE_UDP) {
1175 type = SOCK_DGRAM;
1176 domain = AF_INET;
1177 } else if (o->proto == FIO_TYPE_UDP_V6) {
1178 type = SOCK_DGRAM;
1179 domain = AF_INET6;
1180 } else {
1181 log_err("fio: unknown proto %d\n", o->proto);
1182 return 1;
1183 }
1184
1185 fd = socket(domain, type, 0);
1186 if (fd < 0) {
1187 td_verror(td, errno, "socket");
1188 return 1;
1189 }
1190
1191 opt = 1;
1192 if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (void *) &opt, sizeof(opt)) < 0) {
1193 td_verror(td, errno, "setsockopt");
1194 close(fd);
1195 return 1;
1196 }
1197#ifdef SO_REUSEPORT
1198 if (setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, (void *) &opt, sizeof(opt)) < 0) {
1199 td_verror(td, errno, "setsockopt");
1200 close(fd);
1201 return 1;
1202 }
1203#endif
1204
1205 if (set_window_size(td, fd)) {
1206 close(fd);
1207 return 1;
1208 }
1209 if (set_mss(td, fd)) {
1210 close(fd);
1211 return 1;
1212 }
1213
1214 if (td->o.filename) {
1215 if (!is_udp(o) || !fio_netio_is_multicast(td->o.filename)) {
1216 log_err("fio: hostname not valid for non-multicast inbound network IO\n");
1217 close(fd);
1218 return 1;
1219 }
1220 if (is_ipv6(o)) {
1221 log_err("fio: IPv6 not supported for multicast network IO\n");
1222 close(fd);
1223 return 1;
1224 }
1225
1226 inet_aton(td->o.filename, &sin.sin_addr);
1227
1228 mr.imr_multiaddr = sin.sin_addr;
1229 if (o->intfc) {
1230 if (inet_aton(o->intfc, &mr.imr_interface) == 0) {
1231 log_err("fio: interface not valid interface IP\n");
1232 close(fd);
1233 return 1;
1234 }
1235 } else {
1236 mr.imr_interface.s_addr = htonl(INADDR_ANY);
1237 }
1238
1239 if (setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, (const char*)&mr, sizeof(mr)) < 0) {
1240 td_verror(td, errno, "setsockopt IP_ADD_MEMBERSHIP");
1241 close(fd);
1242 return 1;
1243 }
1244 }
1245
1246 if (!is_ipv6(o)) {
1247 saddr = (struct sockaddr *) &nd->addr;
1248 len = sizeof(nd->addr);
1249
1250 nd->addr.sin_family = AF_INET;
1251 nd->addr.sin_addr.s_addr = sin.sin_addr.s_addr ? sin.sin_addr.s_addr : htonl(INADDR_ANY);
1252 nd->addr.sin_port = htons(port);
1253 } else {
1254 saddr = (struct sockaddr *) &nd->addr6;
1255 len = sizeof(nd->addr6);
1256
1257 nd->addr6.sin6_family = AF_INET6;
1258 nd->addr6.sin6_addr = in6addr_any;
1259 nd->addr6.sin6_port = htons(port);
1260 }
1261
1262 if (bind(fd, saddr, len) < 0) {
1263 close(fd);
1264 td_verror(td, errno, "bind");
1265 return 1;
1266 }
1267
1268 nd->listenfd = fd;
1269 return 0;
1270}
1271
1272static int fio_netio_setup_listen(struct thread_data *td)
1273{
1274 struct netio_data *nd = td->io_ops_data;
1275 struct netio_options *o = td->eo;
1276 int ret;
1277
1278 if (is_udp(o) || is_tcp(o))
1279 ret = fio_netio_setup_listen_inet(td, o->port);
1280 else
1281 ret = fio_netio_setup_listen_unix(td, td->o.filename);
1282
1283 if (ret)
1284 return ret;
1285 if (is_udp(o))
1286 return 0;
1287
1288 if (listen(nd->listenfd, 10) < 0) {
1289 td_verror(td, errno, "listen");
1290 nd->listenfd = -1;
1291 return 1;
1292 }
1293
1294 return 0;
1295}
1296
1297static int fio_netio_init(struct thread_data *td)
1298{
1299 struct netio_options *o = td->eo;
1300 int ret;
1301
1302#ifdef WIN32
1303 WSADATA wsd;
1304 WSAStartup(MAKEWORD(2,2), &wsd);
1305#endif
1306
1307 if (td_random(td)) {
1308 log_err("fio: network IO can't be random\n");
1309 return 1;
1310 }
1311
1312 if (o->proto == FIO_TYPE_UNIX && o->port) {
1313 log_err("fio: network IO port not valid with unix socket\n");
1314 return 1;
1315 } else if (o->proto != FIO_TYPE_UNIX && !o->port) {
1316 log_err("fio: network IO requires port for tcp or udp\n");
1317 return 1;
1318 }
1319
1320 o->port += td->subjob_number;
1321
1322 if (!is_tcp(o)) {
1323 if (o->listen) {
1324 log_err("fio: listen only valid for TCP proto IO\n");
1325 return 1;
1326 }
1327 if (td_rw(td)) {
1328 log_err("fio: datagram network connections must be"
1329 " read OR write\n");
1330 return 1;
1331 }
1332 if (o->proto == FIO_TYPE_UNIX && !td->o.filename) {
1333 log_err("fio: UNIX sockets need host/filename\n");
1334 return 1;
1335 }
1336 o->listen = td_read(td);
1337 }
1338
1339 if (o->listen)
1340 ret = fio_netio_setup_listen(td);
1341 else
1342 ret = fio_netio_setup_connect(td);
1343
1344 return ret;
1345}
1346
1347static void fio_netio_cleanup(struct thread_data *td)
1348{
1349 struct netio_data *nd = td->io_ops_data;
1350
1351 if (nd) {
1352 if (nd->listenfd != -1)
1353 close(nd->listenfd);
1354 if (nd->pipes[0] != -1)
1355 close(nd->pipes[0]);
1356 if (nd->pipes[1] != -1)
1357 close(nd->pipes[1]);
1358
1359 free(nd);
1360 }
1361}
1362
1363static int fio_netio_setup(struct thread_data *td)
1364{
1365 struct netio_data *nd;
1366
1367 if (!td->files_index) {
1368 add_file(td, td->o.filename ?: "net", 0, 0);
1369 td->o.nr_files = td->o.nr_files ?: 1;
1370 td->o.open_files++;
1371 }
1372
1373 if (!td->io_ops_data) {
1374 nd = malloc(sizeof(*nd));
1375
1376 memset(nd, 0, sizeof(*nd));
1377 nd->listenfd = -1;
1378 nd->pipes[0] = nd->pipes[1] = -1;
1379 td->io_ops_data = nd;
1380 }
1381
1382 return 0;
1383}
1384
1385static void fio_netio_terminate(struct thread_data *td)
1386{
1387 kill(td->pid, SIGTERM);
1388}
1389
1390#ifdef CONFIG_LINUX_SPLICE
1391static int fio_netio_setup_splice(struct thread_data *td)
1392{
1393 struct netio_data *nd;
1394
1395 fio_netio_setup(td);
1396
1397 nd = td->io_ops_data;
1398 if (nd) {
1399 if (pipe(nd->pipes) < 0)
1400 return 1;
1401
1402 nd->use_splice = 1;
1403 return 0;
1404 }
1405
1406 return 1;
1407}
1408
1409static struct ioengine_ops ioengine_splice = {
1410 .name = "netsplice",
1411 .version = FIO_IOOPS_VERSION,
1412 .prep = fio_netio_prep,
1413 .queue = fio_netio_queue,
1414 .setup = fio_netio_setup_splice,
1415 .init = fio_netio_init,
1416 .cleanup = fio_netio_cleanup,
1417 .open_file = fio_netio_open_file,
1418 .close_file = fio_netio_close_file,
1419 .terminate = fio_netio_terminate,
1420 .options = options,
1421 .option_struct_size = sizeof(struct netio_options),
1422 .flags = FIO_SYNCIO | FIO_DISKLESSIO | FIO_UNIDIR |
1423 FIO_PIPEIO,
1424};
1425#endif
1426
1427static struct ioengine_ops ioengine_rw = {
1428 .name = "net",
1429 .version = FIO_IOOPS_VERSION,
1430 .prep = fio_netio_prep,
1431 .queue = fio_netio_queue,
1432 .setup = fio_netio_setup,
1433 .init = fio_netio_init,
1434 .cleanup = fio_netio_cleanup,
1435 .open_file = fio_netio_open_file,
1436 .close_file = fio_netio_close_file,
1437 .terminate = fio_netio_terminate,
1438 .options = options,
1439 .option_struct_size = sizeof(struct netio_options),
1440 .flags = FIO_SYNCIO | FIO_DISKLESSIO | FIO_UNIDIR |
1441 FIO_PIPEIO | FIO_BIT_BASED,
1442};
1443
1444static int str_hostname_cb(void *data, const char *input)
1445{
1446 struct netio_options *o = data;
1447
1448 if (o->td->o.filename)
1449 free(o->td->o.filename);
1450 o->td->o.filename = strdup(input);
1451 return 0;
1452}
1453
1454static void fio_init fio_netio_register(void)
1455{
1456 register_ioengine(&ioengine_rw);
1457#ifdef CONFIG_LINUX_SPLICE
1458 register_ioengine(&ioengine_splice);
1459#endif
1460}
1461
1462static void fio_exit fio_netio_unregister(void)
1463{
1464 unregister_ioengine(&ioengine_rw);
1465#ifdef CONFIG_LINUX_SPLICE
1466 unregister_ioengine(&ioengine_splice);
1467#endif
1468}
fio - Flexible IO Tester