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Fixup and improve per-thread data
[fio.git] / server.c
... / ...
CommitLineData
1#include <stdio.h>
2#include <stdlib.h>
3#include <stdarg.h>
4#include <unistd.h>
5#include <limits.h>
6#include <errno.h>
7#include <sys/poll.h>
8#include <sys/types.h>
9#include <sys/wait.h>
10#include <sys/socket.h>
11#include <sys/stat.h>
12#include <sys/un.h>
13#include <sys/uio.h>
14#include <netinet/in.h>
15#include <arpa/inet.h>
16#include <netdb.h>
17#include <syslog.h>
18#include <signal.h>
19#ifdef CONFIG_ZLIB
20#include <zlib.h>
21#endif
22
23#include "fio.h"
24#include "options.h"
25#include "server.h"
26#include "crc/crc16.h"
27#include "lib/ieee754.h"
28#include "verify.h"
29#include "smalloc.h"
30
31int fio_net_port = FIO_NET_PORT;
32
33int exit_backend = 0;
34
35enum {
36 SK_F_FREE = 1,
37 SK_F_COPY = 2,
38 SK_F_SIMPLE = 4,
39 SK_F_VEC = 8,
40};
41
42struct sk_entry {
43 struct flist_head list;
44 int opcode;
45 void *buf;
46 off_t size;
47 uint64_t *tagptr;
48 int flags;
49 struct flist_head next;
50};
51
52struct sk_out {
53 unsigned int refs;
54
55 int sk;
56 struct fio_mutex *lock;
57 struct flist_head list;
58 struct fio_mutex *wait;
59};
60
61static char *fio_server_arg;
62static char *bind_sock;
63static struct sockaddr_in saddr_in;
64static struct sockaddr_in6 saddr_in6;
65static int use_ipv6;
66#ifdef CONFIG_ZLIB
67static unsigned int has_zlib = 1;
68#else
69static unsigned int has_zlib = 0;
70#endif
71static unsigned int use_zlib;
72static char me[128];
73
74static pthread_key_t sk_out_key;
75
76struct fio_fork_item {
77 struct flist_head list;
78 int exitval;
79 int signal;
80 int exited;
81 pid_t pid;
82};
83
84struct cmd_reply {
85 struct fio_mutex lock;
86 void *data;
87 size_t size;
88 int error;
89};
90
91static const char *fio_server_ops[FIO_NET_CMD_NR] = {
92 "",
93 "QUIT",
94 "EXIT",
95 "JOB",
96 "JOBLINE",
97 "TEXT",
98 "TS",
99 "GS",
100 "SEND_ETA",
101 "ETA",
102 "PROBE",
103 "START",
104 "STOP",
105 "DISK_UTIL",
106 "SERVER_START",
107 "ADD_JOB",
108 "RUN",
109 "IOLOG",
110 "UPDATE_JOB",
111 "LOAD_FILE",
112 "VTRIGGER",
113 "SENDFILE",
114};
115
116static void sk_lock(struct sk_out *sk_out)
117{
118 fio_mutex_down(sk_out->lock);
119}
120
121static void sk_unlock(struct sk_out *sk_out)
122{
123 fio_mutex_up(sk_out->lock);
124}
125
126void sk_out_assign(struct sk_out *sk_out)
127{
128 if (!sk_out)
129 return;
130
131 sk_lock(sk_out);
132 sk_out->refs++;
133 sk_unlock(sk_out);
134 pthread_setspecific(sk_out_key, sk_out);
135}
136
137static void __sk_out_drop(struct sk_out *sk_out)
138{
139 fio_mutex_remove(sk_out->lock);
140 fio_mutex_remove(sk_out->wait);
141 sfree(sk_out);
142}
143
144void sk_out_drop(void)
145{
146 struct sk_out *sk_out = pthread_getspecific(sk_out_key);
147
148 if (sk_out) {
149 int refs;
150
151 sk_lock(sk_out);
152 refs = --sk_out->refs;
153 sk_unlock(sk_out);
154
155 if (!refs)
156 __sk_out_drop(sk_out);
157
158 pthread_setspecific(sk_out_key, NULL);
159 }
160}
161
162const char *fio_server_op(unsigned int op)
163{
164 static char buf[32];
165
166 if (op < FIO_NET_CMD_NR)
167 return fio_server_ops[op];
168
169 sprintf(buf, "UNKNOWN/%d", op);
170 return buf;
171}
172
173static ssize_t iov_total_len(const struct iovec *iov, int count)
174{
175 ssize_t ret = 0;
176
177 while (count--) {
178 ret += iov->iov_len;
179 iov++;
180 }
181
182 return ret;
183}
184
185static int fio_sendv_data(int sk, struct iovec *iov, int count)
186{
187 ssize_t total_len = iov_total_len(iov, count);
188 ssize_t ret;
189
190 do {
191 ret = writev(sk, iov, count);
192 if (ret > 0) {
193 total_len -= ret;
194 if (!total_len)
195 break;
196
197 while (ret) {
198 if (ret >= iov->iov_len) {
199 ret -= iov->iov_len;
200 iov++;
201 continue;
202 }
203 iov->iov_base += ret;
204 iov->iov_len -= ret;
205 ret = 0;
206 }
207 } else if (!ret)
208 break;
209 else if (errno == EAGAIN || errno == EINTR)
210 continue;
211 else
212 break;
213 } while (!exit_backend);
214
215 if (!total_len)
216 return 0;
217
218 return 1;
219}
220
221int fio_send_data(int sk, const void *p, unsigned int len)
222{
223 struct iovec iov = { .iov_base = (void *) p, .iov_len = len };
224
225 assert(len <= sizeof(struct fio_net_cmd) + FIO_SERVER_MAX_FRAGMENT_PDU);
226
227 return fio_sendv_data(sk, &iov, 1);
228}
229
230int fio_recv_data(int sk, void *p, unsigned int len)
231{
232 do {
233 int ret = recv(sk, p, len, MSG_WAITALL);
234
235 if (ret > 0) {
236 len -= ret;
237 if (!len)
238 break;
239 p += ret;
240 continue;
241 } else if (!ret)
242 break;
243 else if (errno == EAGAIN || errno == EINTR)
244 continue;
245 else
246 break;
247 } while (!exit_backend);
248
249 if (!len)
250 return 0;
251
252 return -1;
253}
254
255static int verify_convert_cmd(struct fio_net_cmd *cmd)
256{
257 uint16_t crc;
258
259 cmd->cmd_crc16 = le16_to_cpu(cmd->cmd_crc16);
260 cmd->pdu_crc16 = le16_to_cpu(cmd->pdu_crc16);
261
262 crc = fio_crc16(cmd, FIO_NET_CMD_CRC_SZ);
263 if (crc != cmd->cmd_crc16) {
264 log_err("fio: server bad crc on command (got %x, wanted %x)\n",
265 cmd->cmd_crc16, crc);
266 return 1;
267 }
268
269 cmd->version = le16_to_cpu(cmd->version);
270 cmd->opcode = le16_to_cpu(cmd->opcode);
271 cmd->flags = le32_to_cpu(cmd->flags);
272 cmd->tag = le64_to_cpu(cmd->tag);
273 cmd->pdu_len = le32_to_cpu(cmd->pdu_len);
274
275 switch (cmd->version) {
276 case FIO_SERVER_VER:
277 break;
278 default:
279 log_err("fio: bad server cmd version %d\n", cmd->version);
280 return 1;
281 }
282
283 if (cmd->pdu_len > FIO_SERVER_MAX_FRAGMENT_PDU) {
284 log_err("fio: command payload too large: %u\n", cmd->pdu_len);
285 return 1;
286 }
287
288 return 0;
289}
290
291/*
292 * Read (and defragment, if necessary) incoming commands
293 */
294struct fio_net_cmd *fio_net_recv_cmd(int sk)
295{
296 struct fio_net_cmd cmd, *tmp, *cmdret = NULL;
297 size_t cmd_size = 0, pdu_offset = 0;
298 uint16_t crc;
299 int ret, first = 1;
300 void *pdu = NULL;
301
302 do {
303 ret = fio_recv_data(sk, &cmd, sizeof(cmd));
304 if (ret)
305 break;
306
307 /* We have a command, verify it and swap if need be */
308 ret = verify_convert_cmd(&cmd);
309 if (ret)
310 break;
311
312 if (first) {
313 /* if this is text, add room for \0 at the end */
314 cmd_size = sizeof(cmd) + cmd.pdu_len + 1;
315 assert(!cmdret);
316 } else
317 cmd_size += cmd.pdu_len;
318
319 if (cmd_size / 1024 > FIO_SERVER_MAX_CMD_MB * 1024) {
320 log_err("fio: cmd+pdu too large (%llu)\n", (unsigned long long) cmd_size);
321 ret = 1;
322 break;
323 }
324
325 tmp = realloc(cmdret, cmd_size);
326 if (!tmp) {
327 log_err("fio: server failed allocating cmd\n");
328 ret = 1;
329 break;
330 }
331 cmdret = tmp;
332
333 if (first)
334 memcpy(cmdret, &cmd, sizeof(cmd));
335 else if (cmdret->opcode != cmd.opcode) {
336 log_err("fio: fragment opcode mismatch (%d != %d)\n",
337 cmdret->opcode, cmd.opcode);
338 ret = 1;
339 break;
340 }
341
342 if (!cmd.pdu_len)
343 break;
344
345 /* There's payload, get it */
346 pdu = (void *) cmdret->payload + pdu_offset;
347 ret = fio_recv_data(sk, pdu, cmd.pdu_len);
348 if (ret)
349 break;
350
351 /* Verify payload crc */
352 crc = fio_crc16(pdu, cmd.pdu_len);
353 if (crc != cmd.pdu_crc16) {
354 log_err("fio: server bad crc on payload ");
355 log_err("(got %x, wanted %x)\n", cmd.pdu_crc16, crc);
356 ret = 1;
357 break;
358 }
359
360 pdu_offset += cmd.pdu_len;
361 if (!first)
362 cmdret->pdu_len += cmd.pdu_len;
363 first = 0;
364 } while (cmd.flags & FIO_NET_CMD_F_MORE);
365
366 if (ret) {
367 free(cmdret);
368 cmdret = NULL;
369 } else if (cmdret) {
370 /* zero-terminate text input */
371 if (cmdret->pdu_len) {
372 if (cmdret->opcode == FIO_NET_CMD_TEXT) {
373 struct cmd_text_pdu *__pdu = (struct cmd_text_pdu *) cmdret->payload;
374 char *buf = (char *) __pdu->buf;
375
376 buf[__pdu->buf_len] = '\0';
377 } else if (cmdret->opcode == FIO_NET_CMD_JOB) {
378 struct cmd_job_pdu *__pdu = (struct cmd_job_pdu *) cmdret->payload;
379 char *buf = (char *) __pdu->buf;
380 int len = le32_to_cpu(__pdu->buf_len);
381
382 buf[len] = '\0';
383 }
384 }
385
386 /* frag flag is internal */
387 cmdret->flags &= ~FIO_NET_CMD_F_MORE;
388 }
389
390 return cmdret;
391}
392
393static void add_reply(uint64_t tag, struct flist_head *list)
394{
395 struct fio_net_cmd_reply *reply;
396
397 reply = (struct fio_net_cmd_reply *) (uintptr_t) tag;
398 flist_add_tail(&reply->list, list);
399}
400
401static uint64_t alloc_reply(uint64_t tag, uint16_t opcode)
402{
403 struct fio_net_cmd_reply *reply;
404
405 reply = calloc(1, sizeof(*reply));
406 INIT_FLIST_HEAD(&reply->list);
407 fio_gettime(&reply->tv, NULL);
408 reply->saved_tag = tag;
409 reply->opcode = opcode;
410
411 return (uintptr_t) reply;
412}
413
414static void free_reply(uint64_t tag)
415{
416 struct fio_net_cmd_reply *reply;
417
418 reply = (struct fio_net_cmd_reply *) (uintptr_t) tag;
419 free(reply);
420}
421
422void fio_net_cmd_crc_pdu(struct fio_net_cmd *cmd, const void *pdu)
423{
424 uint32_t pdu_len;
425
426 cmd->cmd_crc16 = __cpu_to_le16(fio_crc16(cmd, FIO_NET_CMD_CRC_SZ));
427
428 pdu_len = le32_to_cpu(cmd->pdu_len);
429 cmd->pdu_crc16 = __cpu_to_le16(fio_crc16(pdu, pdu_len));
430}
431
432void fio_net_cmd_crc(struct fio_net_cmd *cmd)
433{
434 fio_net_cmd_crc_pdu(cmd, cmd->payload);
435}
436
437int fio_net_send_cmd(int fd, uint16_t opcode, const void *buf, off_t size,
438 uint64_t *tagptr, struct flist_head *list)
439{
440 struct fio_net_cmd *cmd = NULL;
441 size_t this_len, cur_len = 0;
442 uint64_t tag;
443 int ret;
444
445 if (list) {
446 assert(tagptr);
447 tag = *tagptr = alloc_reply(*tagptr, opcode);
448 } else
449 tag = tagptr ? *tagptr : 0;
450
451 do {
452 this_len = size;
453 if (this_len > FIO_SERVER_MAX_FRAGMENT_PDU)
454 this_len = FIO_SERVER_MAX_FRAGMENT_PDU;
455
456 if (!cmd || cur_len < sizeof(*cmd) + this_len) {
457 if (cmd)
458 free(cmd);
459
460 cur_len = sizeof(*cmd) + this_len;
461 cmd = malloc(cur_len);
462 }
463
464 fio_init_net_cmd(cmd, opcode, buf, this_len, tag);
465
466 if (this_len < size)
467 cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE);
468
469 fio_net_cmd_crc(cmd);
470
471 ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len);
472 size -= this_len;
473 buf += this_len;
474 } while (!ret && size);
475
476 if (list) {
477 if (ret)
478 free_reply(tag);
479 else
480 add_reply(tag, list);
481 }
482
483 if (cmd)
484 free(cmd);
485
486 return ret;
487}
488
489struct sk_entry *fio_net_prep_cmd(uint16_t opcode, void *buf, off_t size,
490 uint64_t *tagptr, int flags)
491{
492 struct sk_entry *entry;
493
494 entry = smalloc(sizeof(*entry));
495 INIT_FLIST_HEAD(&entry->next);
496 entry->opcode = opcode;
497 if (flags & SK_F_COPY) {
498 entry->buf = smalloc(size);
499 memcpy(entry->buf, buf, size);
500 } else
501 entry->buf = buf;
502 entry->size = size;
503 entry->tagptr = tagptr;
504 entry->flags = flags;
505
506 return entry;
507}
508
509static void fio_net_queue_entry(struct sk_entry *entry)
510{
511 struct sk_out *sk_out = pthread_getspecific(sk_out_key);
512
513 sk_lock(sk_out);
514 flist_add_tail(&entry->list, &sk_out->list);
515 sk_unlock(sk_out);
516
517 fio_mutex_up(sk_out->wait);
518}
519
520static int fio_net_queue_cmd(uint16_t opcode, void *buf, off_t size,
521 uint64_t *tagptr, int flags)
522{
523 struct sk_entry *entry;
524
525 entry = fio_net_prep_cmd(opcode, buf, size, tagptr, flags);
526 fio_net_queue_entry(entry);
527 return 0;
528}
529
530static int fio_net_send_simple_stack_cmd(int sk, uint16_t opcode, uint64_t tag)
531{
532 struct fio_net_cmd cmd;
533
534 fio_init_net_cmd(&cmd, opcode, NULL, 0, tag);
535 fio_net_cmd_crc(&cmd);
536
537 return fio_send_data(sk, &cmd, sizeof(cmd));
538}
539
540/*
541 * If 'list' is non-NULL, then allocate and store the sent command for
542 * later verification.
543 */
544int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t tag,
545 struct flist_head *list)
546{
547 int ret;
548
549 if (list)
550 tag = alloc_reply(tag, opcode);
551
552 ret = fio_net_send_simple_stack_cmd(sk, opcode, tag);
553 if (ret) {
554 if (list)
555 free_reply(tag);
556
557 return ret;
558 }
559
560 if (list)
561 add_reply(tag, list);
562
563 return 0;
564}
565
566static int fio_net_queue_quit(void)
567{
568 dprint(FD_NET, "server: sending quit\n");
569
570 return fio_net_queue_cmd(FIO_NET_CMD_QUIT, NULL, 0, 0, SK_F_SIMPLE);
571}
572
573int fio_net_send_quit(int sk)
574{
575 dprint(FD_NET, "server: sending quit\n");
576
577 return fio_net_send_simple_cmd(sk, FIO_NET_CMD_QUIT, 0, NULL);
578}
579
580static int fio_net_send_ack(struct fio_net_cmd *cmd, int error, int signal)
581{
582 struct cmd_end_pdu epdu;
583 uint64_t tag = 0;
584
585 if (cmd)
586 tag = cmd->tag;
587
588 epdu.error = __cpu_to_le32(error);
589 epdu.signal = __cpu_to_le32(signal);
590 return fio_net_queue_cmd(FIO_NET_CMD_STOP, &epdu, sizeof(epdu), &tag, SK_F_COPY);
591}
592
593static int fio_net_queue_stop(int error, int signal)
594{
595 dprint(FD_NET, "server: sending stop (%d, %d)\n", error, signal);
596 return fio_net_send_ack(NULL, error, signal);
597}
598
599static void fio_server_add_fork_item(pid_t pid, struct flist_head *list)
600{
601 struct fio_fork_item *ffi;
602
603 ffi = malloc(sizeof(*ffi));
604 ffi->exitval = 0;
605 ffi->signal = 0;
606 ffi->exited = 0;
607 ffi->pid = pid;
608 flist_add_tail(&ffi->list, list);
609}
610
611static void fio_server_add_conn_pid(struct flist_head *conn_list, pid_t pid)
612{
613 dprint(FD_NET, "server: forked off connection job (pid=%u)\n", (int) pid);
614 fio_server_add_fork_item(pid, conn_list);
615}
616
617static void fio_server_add_job_pid(struct flist_head *job_list, pid_t pid)
618{
619 dprint(FD_NET, "server: forked off job job (pid=%u)\n", (int) pid);
620 fio_server_add_fork_item(pid, job_list);
621}
622
623static void fio_server_check_fork_item(struct fio_fork_item *ffi)
624{
625 int ret, status;
626
627 ret = waitpid(ffi->pid, &status, WNOHANG);
628 if (ret < 0) {
629 if (errno == ECHILD) {
630 log_err("fio: connection pid %u disappeared\n", (int) ffi->pid);
631 ffi->exited = 1;
632 } else
633 log_err("fio: waitpid: %s\n", strerror(errno));
634 } else if (ret == ffi->pid) {
635 if (WIFSIGNALED(status)) {
636 ffi->signal = WTERMSIG(status);
637 ffi->exited = 1;
638 }
639 if (WIFEXITED(status)) {
640 if (WEXITSTATUS(status))
641 ffi->exitval = WEXITSTATUS(status);
642 ffi->exited = 1;
643 }
644 }
645}
646
647static void fio_server_fork_item_done(struct fio_fork_item *ffi, bool stop)
648{
649 dprint(FD_NET, "pid %u exited, sig=%u, exitval=%d\n", (int) ffi->pid, ffi->signal, ffi->exitval);
650
651 /*
652 * Fold STOP and QUIT...
653 */
654 if (stop) {
655 fio_net_queue_stop(ffi->exitval, ffi->signal);
656 fio_net_queue_quit();
657 }
658
659 flist_del(&ffi->list);
660 free(ffi);
661}
662
663static void fio_server_check_fork_items(struct flist_head *list, bool stop)
664{
665 struct flist_head *entry, *tmp;
666 struct fio_fork_item *ffi;
667
668 flist_for_each_safe(entry, tmp, list) {
669 ffi = flist_entry(entry, struct fio_fork_item, list);
670
671 fio_server_check_fork_item(ffi);
672
673 if (ffi->exited)
674 fio_server_fork_item_done(ffi, stop);
675 }
676}
677
678static void fio_server_check_jobs(struct flist_head *job_list)
679{
680 fio_server_check_fork_items(job_list, true);
681}
682
683static void fio_server_check_conns(struct flist_head *conn_list)
684{
685 fio_server_check_fork_items(conn_list, false);
686}
687
688static int handle_load_file_cmd(struct fio_net_cmd *cmd)
689{
690 struct cmd_load_file_pdu *pdu = (struct cmd_load_file_pdu *) cmd->payload;
691 void *file_name = pdu->file;
692 struct cmd_start_pdu spdu;
693
694 dprint(FD_NET, "server: loading local file %s\n", (char *) file_name);
695
696 pdu->name_len = le16_to_cpu(pdu->name_len);
697 pdu->client_type = le16_to_cpu(pdu->client_type);
698
699 if (parse_jobs_ini(file_name, 0, 0, pdu->client_type)) {
700 fio_net_queue_quit();
701 return -1;
702 }
703
704 spdu.jobs = cpu_to_le32(thread_number);
705 spdu.stat_outputs = cpu_to_le32(stat_number);
706 fio_net_queue_cmd(FIO_NET_CMD_START, &spdu, sizeof(spdu), NULL, SK_F_COPY);
707 return 0;
708}
709
710static int handle_run_cmd(struct sk_out *sk_out, struct flist_head *job_list,
711 struct fio_net_cmd *cmd)
712{
713 pid_t pid;
714 int ret;
715
716 fio_time_init();
717 set_genesis_time();
718
719 pid = fork();
720 if (pid) {
721 fio_server_add_job_pid(job_list, pid);
722 return 0;
723 }
724
725 ret = fio_backend(sk_out);
726 free_threads_shm();
727 _exit(ret);
728}
729
730static int handle_job_cmd(struct fio_net_cmd *cmd)
731{
732 struct cmd_job_pdu *pdu = (struct cmd_job_pdu *) cmd->payload;
733 void *buf = pdu->buf;
734 struct cmd_start_pdu spdu;
735
736 pdu->buf_len = le32_to_cpu(pdu->buf_len);
737 pdu->client_type = le32_to_cpu(pdu->client_type);
738
739 if (parse_jobs_ini(buf, 1, 0, pdu->client_type)) {
740 fio_net_queue_quit();
741 return -1;
742 }
743
744 spdu.jobs = cpu_to_le32(thread_number);
745 spdu.stat_outputs = cpu_to_le32(stat_number);
746
747 fio_net_queue_cmd(FIO_NET_CMD_START, &spdu, sizeof(spdu), NULL, SK_F_COPY);
748 return 0;
749}
750
751static int handle_jobline_cmd(struct fio_net_cmd *cmd)
752{
753 void *pdu = cmd->payload;
754 struct cmd_single_line_pdu *cslp;
755 struct cmd_line_pdu *clp;
756 unsigned long offset;
757 struct cmd_start_pdu spdu;
758 char **argv;
759 int i;
760
761 clp = pdu;
762 clp->lines = le16_to_cpu(clp->lines);
763 clp->client_type = le16_to_cpu(clp->client_type);
764 argv = malloc(clp->lines * sizeof(char *));
765 offset = sizeof(*clp);
766
767 dprint(FD_NET, "server: %d command line args\n", clp->lines);
768
769 for (i = 0; i < clp->lines; i++) {
770 cslp = pdu + offset;
771 argv[i] = (char *) cslp->text;
772
773 offset += sizeof(*cslp) + le16_to_cpu(cslp->len);
774 dprint(FD_NET, "server: %d: %s\n", i, argv[i]);
775 }
776
777 if (parse_cmd_line(clp->lines, argv, clp->client_type)) {
778 fio_net_queue_quit();
779 free(argv);
780 return -1;
781 }
782
783 free(argv);
784
785 spdu.jobs = cpu_to_le32(thread_number);
786 spdu.stat_outputs = cpu_to_le32(stat_number);
787
788 fio_net_queue_cmd(FIO_NET_CMD_START, &spdu, sizeof(spdu), NULL, SK_F_COPY);
789 return 0;
790}
791
792static int handle_probe_cmd(struct fio_net_cmd *cmd)
793{
794 struct cmd_client_probe_pdu *pdu = (struct cmd_client_probe_pdu *) cmd->payload;
795 struct cmd_probe_reply_pdu probe;
796 uint64_t tag = cmd->tag;
797
798 dprint(FD_NET, "server: sending probe reply\n");
799
800 strcpy(me, (char *) pdu->server);
801
802 memset(&probe, 0, sizeof(probe));
803 gethostname((char *) probe.hostname, sizeof(probe.hostname));
804#ifdef CONFIG_BIG_ENDIAN
805 probe.bigendian = 1;
806#endif
807 strncpy((char *) probe.fio_version, fio_version_string, sizeof(probe.fio_version));
808
809 probe.os = FIO_OS;
810 probe.arch = FIO_ARCH;
811 probe.bpp = sizeof(void *);
812 probe.cpus = __cpu_to_le32(cpus_online());
813
814 /*
815 * If the client supports compression and we do too, then enable it
816 */
817 if (has_zlib && le64_to_cpu(pdu->flags) & FIO_PROBE_FLAG_ZLIB) {
818 probe.flags = __cpu_to_le64(FIO_PROBE_FLAG_ZLIB);
819 use_zlib = 1;
820 } else {
821 probe.flags = 0;
822 use_zlib = 0;
823 }
824
825 return fio_net_queue_cmd(FIO_NET_CMD_PROBE, &probe, sizeof(probe), &tag, SK_F_COPY);
826}
827
828static int handle_send_eta_cmd(struct fio_net_cmd *cmd)
829{
830 struct jobs_eta *je;
831 uint64_t tag = cmd->tag;
832 size_t size;
833 int i;
834
835 dprint(FD_NET, "server sending status\n");
836
837 /*
838 * Fake ETA return if we don't have a local one, otherwise the client
839 * will end up timing out waiting for a response to the ETA request
840 */
841 je = get_jobs_eta(true, &size);
842 if (!je) {
843 size = sizeof(*je);
844 je = calloc(1, size);
845 } else {
846 je->nr_running = cpu_to_le32(je->nr_running);
847 je->nr_ramp = cpu_to_le32(je->nr_ramp);
848 je->nr_pending = cpu_to_le32(je->nr_pending);
849 je->nr_setting_up = cpu_to_le32(je->nr_setting_up);
850 je->files_open = cpu_to_le32(je->files_open);
851
852 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
853 je->m_rate[i] = cpu_to_le32(je->m_rate[i]);
854 je->t_rate[i] = cpu_to_le32(je->t_rate[i]);
855 je->m_iops[i] = cpu_to_le32(je->m_iops[i]);
856 je->t_iops[i] = cpu_to_le32(je->t_iops[i]);
857 je->rate[i] = cpu_to_le32(je->rate[i]);
858 je->iops[i] = cpu_to_le32(je->iops[i]);
859 }
860
861 je->elapsed_sec = cpu_to_le64(je->elapsed_sec);
862 je->eta_sec = cpu_to_le64(je->eta_sec);
863 je->nr_threads = cpu_to_le32(je->nr_threads);
864 je->is_pow2 = cpu_to_le32(je->is_pow2);
865 je->unit_base = cpu_to_le32(je->unit_base);
866 }
867
868 fio_net_queue_cmd(FIO_NET_CMD_ETA, je, size, &tag, SK_F_FREE);
869 return 0;
870}
871
872static int send_update_job_reply(uint64_t __tag, int error)
873{
874 uint64_t tag = __tag;
875 uint32_t pdu_error;
876
877 pdu_error = __cpu_to_le32(error);
878 return fio_net_queue_cmd(FIO_NET_CMD_UPDATE_JOB, &pdu_error, sizeof(pdu_error), &tag, SK_F_COPY);
879}
880
881static int handle_update_job_cmd(struct fio_net_cmd *cmd)
882{
883 struct cmd_add_job_pdu *pdu = (struct cmd_add_job_pdu *) cmd->payload;
884 struct thread_data *td;
885 uint32_t tnumber;
886
887 tnumber = le32_to_cpu(pdu->thread_number);
888
889 dprint(FD_NET, "server: updating options for job %u\n", tnumber);
890
891 if (!tnumber || tnumber > thread_number) {
892 send_update_job_reply(cmd->tag, ENODEV);
893 return 0;
894 }
895
896 td = &threads[tnumber - 1];
897 convert_thread_options_to_cpu(&td->o, &pdu->top);
898 send_update_job_reply(cmd->tag, 0);
899 return 0;
900}
901
902static int handle_trigger_cmd(struct fio_net_cmd *cmd)
903{
904 struct cmd_vtrigger_pdu *pdu = (struct cmd_vtrigger_pdu *) cmd->payload;
905 char *buf = (char *) pdu->cmd;
906 struct all_io_list *rep;
907 size_t sz;
908
909 pdu->len = le16_to_cpu(pdu->len);
910 buf[pdu->len] = '\0';
911
912 rep = get_all_io_list(IO_LIST_ALL, &sz);
913 if (!rep) {
914 struct all_io_list state;
915
916 state.threads = cpu_to_le64((uint64_t) 0);
917 fio_net_queue_cmd(FIO_NET_CMD_VTRIGGER, &state, sizeof(state), NULL, SK_F_COPY);
918 } else
919 fio_net_queue_cmd(FIO_NET_CMD_VTRIGGER, rep, sz, NULL, SK_F_FREE);
920
921 exec_trigger(buf);
922 return 0;
923}
924
925static int handle_command(struct sk_out *sk_out, struct flist_head *job_list,
926 struct fio_net_cmd *cmd)
927{
928 int ret;
929
930 dprint(FD_NET, "server: got op [%s], pdu=%u, tag=%llx\n",
931 fio_server_op(cmd->opcode), cmd->pdu_len,
932 (unsigned long long) cmd->tag);
933
934 switch (cmd->opcode) {
935 case FIO_NET_CMD_QUIT:
936 fio_terminate_threads(TERMINATE_ALL);
937 ret = 0;
938 break;
939 case FIO_NET_CMD_EXIT:
940 exit_backend = 1;
941 return -1;
942 case FIO_NET_CMD_LOAD_FILE:
943 ret = handle_load_file_cmd(cmd);
944 break;
945 case FIO_NET_CMD_JOB:
946 ret = handle_job_cmd(cmd);
947 break;
948 case FIO_NET_CMD_JOBLINE:
949 ret = handle_jobline_cmd(cmd);
950 break;
951 case FIO_NET_CMD_PROBE:
952 ret = handle_probe_cmd(cmd);
953 break;
954 case FIO_NET_CMD_SEND_ETA:
955 ret = handle_send_eta_cmd(cmd);
956 break;
957 case FIO_NET_CMD_RUN:
958 ret = handle_run_cmd(sk_out, job_list, cmd);
959 break;
960 case FIO_NET_CMD_UPDATE_JOB:
961 ret = handle_update_job_cmd(cmd);
962 break;
963 case FIO_NET_CMD_VTRIGGER:
964 ret = handle_trigger_cmd(cmd);
965 break;
966 case FIO_NET_CMD_SENDFILE: {
967 struct cmd_sendfile_reply *in;
968 struct cmd_reply *rep;
969
970 rep = (struct cmd_reply *) (uintptr_t) cmd->tag;
971
972 in = (struct cmd_sendfile_reply *) cmd->payload;
973 in->size = le32_to_cpu(in->size);
974 in->error = le32_to_cpu(in->error);
975 if (in->error) {
976 ret = 1;
977 rep->error = in->error;
978 } else {
979 ret = 0;
980 rep->data = smalloc(in->size);
981 if (!rep->data) {
982 ret = 1;
983 rep->error = ENOMEM;
984 } else {
985 rep->size = in->size;
986 memcpy(rep->data, in->data, in->size);
987 }
988 }
989 fio_mutex_up(&rep->lock);
990 break;
991 }
992 default:
993 log_err("fio: unknown opcode: %s\n", fio_server_op(cmd->opcode));
994 ret = 1;
995 }
996
997 return ret;
998}
999
1000/*
1001 * Send a command with a separate PDU, not inlined in the command
1002 */
1003static int fio_send_cmd_ext_pdu(int sk, uint16_t opcode, const void *buf,
1004 off_t size, uint64_t tag, uint32_t flags)
1005{
1006 struct fio_net_cmd cmd;
1007 struct iovec iov[2];
1008
1009 iov[0].iov_base = (void *) &cmd;
1010 iov[0].iov_len = sizeof(cmd);
1011 iov[1].iov_base = (void *) buf;
1012 iov[1].iov_len = size;
1013
1014 __fio_init_net_cmd(&cmd, opcode, size, tag);
1015 cmd.flags = __cpu_to_le32(flags);
1016 fio_net_cmd_crc_pdu(&cmd, buf);
1017
1018 return fio_sendv_data(sk, iov, 2);
1019}
1020
1021static void finish_entry(struct sk_entry *entry)
1022{
1023 if (entry->flags & SK_F_FREE)
1024 free(entry->buf);
1025 else if (entry->flags & SK_F_COPY)
1026 sfree(entry->buf);
1027
1028 sfree(entry);
1029}
1030
1031static void entry_set_flags_tag(struct sk_entry *entry, struct flist_head *list,
1032 unsigned int *flags, uint64_t *tag)
1033{
1034 if (!flist_empty(list))
1035 *flags = FIO_NET_CMD_F_MORE;
1036 else
1037 *flags = 0;
1038
1039 if (entry->tagptr)
1040 *tag = *entry->tagptr;
1041 else
1042 *tag = 0;
1043}
1044
1045static int send_vec_entry(struct sk_out *sk_out, struct sk_entry *first)
1046{
1047 unsigned int flags;
1048 uint64_t tag;
1049 int ret;
1050
1051 entry_set_flags_tag(first, &first->next, &flags, &tag);
1052
1053 ret = fio_send_cmd_ext_pdu(sk_out->sk, first->opcode, first->buf, first->size, tag, flags);
1054
1055 while (!flist_empty(&first->next)) {
1056 struct sk_entry *next;
1057
1058 next = flist_first_entry(&first->next, struct sk_entry, list);
1059 flist_del_init(&next->list);
1060
1061 entry_set_flags_tag(next, &first->next, &flags, &tag);
1062
1063 ret += fio_send_cmd_ext_pdu(sk_out->sk, next->opcode, next->buf, next->size, tag, flags);
1064 finish_entry(next);
1065 }
1066
1067 return ret;
1068}
1069
1070static int handle_sk_entry(struct sk_out *sk_out, struct sk_entry *entry)
1071{
1072 int ret;
1073
1074 if (entry->flags & SK_F_VEC)
1075 ret = send_vec_entry(sk_out, entry);
1076 if (entry->flags & SK_F_SIMPLE) {
1077 uint64_t tag = 0;
1078
1079 if (entry->tagptr)
1080 tag = *entry->tagptr;
1081
1082 ret = fio_net_send_simple_cmd(sk_out->sk, entry->opcode, tag, NULL);
1083 } else
1084 ret = fio_net_send_cmd(sk_out->sk, entry->opcode, entry->buf, entry->size, entry->tagptr, NULL);
1085
1086 if (ret)
1087 log_err("fio: failed handling cmd %s\n", fio_server_op(entry->opcode));
1088
1089 finish_entry(entry);
1090 return ret;
1091}
1092
1093static int handle_xmits(struct sk_out *sk_out)
1094{
1095 struct sk_entry *entry;
1096 FLIST_HEAD(list);
1097 int ret = 0;
1098
1099 sk_lock(sk_out);
1100 if (flist_empty(&sk_out->list)) {
1101 sk_unlock(sk_out);
1102 return 0;
1103 }
1104
1105 flist_splice_init(&sk_out->list, &list);
1106 sk_unlock(sk_out);
1107
1108 while (!flist_empty(&list)) {
1109 entry = flist_entry(list.next, struct sk_entry, list);
1110 flist_del(&entry->list);
1111 ret += handle_sk_entry(sk_out, entry);
1112 }
1113
1114 return ret;
1115}
1116
1117static int handle_connection(struct sk_out *sk_out)
1118{
1119 struct fio_net_cmd *cmd = NULL;
1120 FLIST_HEAD(job_list);
1121 int ret = 0;
1122
1123 reset_fio_state();
1124
1125 /* read forever */
1126 while (!exit_backend) {
1127 struct pollfd pfd = {
1128 .fd = sk_out->sk,
1129 .events = POLLIN,
1130 };
1131
1132 ret = 0;
1133 do {
1134 int timeout = 1000;
1135
1136 if (!flist_empty(&job_list))
1137 timeout = 100;
1138
1139 handle_xmits(sk_out);
1140
1141 ret = poll(&pfd, 1, 0);
1142 if (ret < 0) {
1143 if (errno == EINTR)
1144 break;
1145 log_err("fio: poll: %s\n", strerror(errno));
1146 break;
1147 } else if (!ret) {
1148 fio_server_check_jobs(&job_list);
1149 fio_mutex_down_timeout(sk_out->wait, timeout);
1150 continue;
1151 }
1152
1153 if (pfd.revents & POLLIN)
1154 break;
1155 if (pfd.revents & (POLLERR|POLLHUP)) {
1156 ret = 1;
1157 break;
1158 }
1159 } while (!exit_backend);
1160
1161 fio_server_check_jobs(&job_list);
1162
1163 if (ret < 0)
1164 break;
1165
1166 cmd = fio_net_recv_cmd(sk_out->sk);
1167 if (!cmd) {
1168 ret = -1;
1169 break;
1170 }
1171
1172 ret = handle_command(sk_out, &job_list, cmd);
1173 if (ret)
1174 break;
1175
1176 free(cmd);
1177 cmd = NULL;
1178 }
1179
1180 if (cmd)
1181 free(cmd);
1182
1183 handle_xmits(sk_out);
1184
1185 close(sk_out->sk);
1186 _exit(ret);
1187}
1188
1189/* get the address on this host bound by the input socket,
1190 * whether it is ipv6 or ipv4 */
1191
1192int get_my_addr_str(int sk)
1193{
1194 struct sockaddr_in6 myaddr6 = { 0, };
1195 struct sockaddr_in myaddr4 = { 0, };
1196 struct sockaddr *sockaddr_p;
1197 char *net_addr;
1198 socklen_t len;
1199 int ret;
1200
1201 if (use_ipv6) {
1202 len = sizeof(myaddr6);
1203 sockaddr_p = (struct sockaddr * )&myaddr6;
1204 net_addr = (char * )&myaddr6.sin6_addr;
1205 } else {
1206 len = sizeof(myaddr4);
1207 sockaddr_p = (struct sockaddr * )&myaddr4;
1208 net_addr = (char * )&myaddr4.sin_addr;
1209 }
1210
1211 ret = getsockname(sk, sockaddr_p, &len);
1212 if (ret) {
1213 log_err("fio: getsockaddr: %s\n", strerror(errno));
1214 return -1;
1215 }
1216
1217 if (!inet_ntop(use_ipv6?AF_INET6:AF_INET, net_addr, client_sockaddr_str, INET6_ADDRSTRLEN - 1)) {
1218 log_err("inet_ntop: failed to convert addr to string\n");
1219 return -1;
1220 }
1221
1222 dprint(FD_NET, "fio server bound to addr %s\n", client_sockaddr_str);
1223 return 0;
1224}
1225
1226static int accept_loop(struct sk_out *sk_out, int listen_sk)
1227{
1228 struct sockaddr_in addr;
1229 struct sockaddr_in6 addr6;
1230 socklen_t len = use_ipv6 ? sizeof(addr6) : sizeof(addr);
1231 struct pollfd pfd;
1232 int ret = 0, sk, exitval = 0;
1233 FLIST_HEAD(conn_list);
1234
1235 dprint(FD_NET, "server enter accept loop\n");
1236
1237 fio_set_fd_nonblocking(listen_sk, "server");
1238
1239 while (!exit_backend) {
1240 const char *from;
1241 char buf[64];
1242 pid_t pid;
1243
1244 pfd.fd = listen_sk;
1245 pfd.events = POLLIN;
1246 do {
1247 int timeout = 1000;
1248
1249 if (!flist_empty(&conn_list))
1250 timeout = 100;
1251
1252 ret = poll(&pfd, 1, timeout);
1253 if (ret < 0) {
1254 if (errno == EINTR)
1255 break;
1256 log_err("fio: poll: %s\n", strerror(errno));
1257 break;
1258 } else if (!ret) {
1259 fio_server_check_conns(&conn_list);
1260 continue;
1261 }
1262
1263 if (pfd.revents & POLLIN)
1264 break;
1265 } while (!exit_backend);
1266
1267 fio_server_check_conns(&conn_list);
1268
1269 if (exit_backend || ret < 0)
1270 break;
1271
1272 if (use_ipv6)
1273 sk = accept(listen_sk, (struct sockaddr *) &addr6, &len);
1274 else
1275 sk = accept(listen_sk, (struct sockaddr *) &addr, &len);
1276
1277 if (sk < 0) {
1278 log_err("fio: accept: %s\n", strerror(errno));
1279 return -1;
1280 }
1281
1282 if (use_ipv6)
1283 from = inet_ntop(AF_INET6, (struct sockaddr *) &addr6.sin6_addr, buf, sizeof(buf));
1284 else
1285 from = inet_ntop(AF_INET, (struct sockaddr *) &addr.sin_addr, buf, sizeof(buf));
1286
1287 dprint(FD_NET, "server: connect from %s\n", from);
1288
1289 sk_out->sk = sk;
1290
1291 pid = fork();
1292 if (pid) {
1293 close(sk);
1294 fio_server_add_conn_pid(&conn_list, pid);
1295 pthread_setspecific(sk_out_key, sk_out);
1296 continue;
1297 }
1298
1299 /* exits */
1300 get_my_addr_str(sk); /* if error, it's already logged, non-fatal */
1301 handle_connection(sk_out);
1302 }
1303
1304 return exitval;
1305}
1306
1307int fio_server_text_output(int level, const char *buf, size_t len)
1308{
1309 struct sk_out *sk_out = pthread_getspecific(sk_out_key);
1310 struct cmd_text_pdu *pdu;
1311 unsigned int tlen;
1312 struct timeval tv;
1313
1314 if (!sk_out || sk_out->sk == -1)
1315 return -1;
1316
1317 tlen = sizeof(*pdu) + len;
1318 pdu = malloc(tlen);
1319
1320 pdu->level = __cpu_to_le32(level);
1321 pdu->buf_len = __cpu_to_le32(len);
1322
1323 gettimeofday(&tv, NULL);
1324 pdu->log_sec = __cpu_to_le64(tv.tv_sec);
1325 pdu->log_usec = __cpu_to_le64(tv.tv_usec);
1326
1327 memcpy(pdu->buf, buf, len);
1328
1329 fio_net_queue_cmd(FIO_NET_CMD_TEXT, pdu, tlen, NULL, SK_F_COPY);
1330 free(pdu);
1331 return len;
1332}
1333
1334static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
1335{
1336 dst->max_val = cpu_to_le64(src->max_val);
1337 dst->min_val = cpu_to_le64(src->min_val);
1338 dst->samples = cpu_to_le64(src->samples);
1339
1340 /*
1341 * Encode to IEEE 754 for network transfer
1342 */
1343 dst->mean.u.i = cpu_to_le64(fio_double_to_uint64(src->mean.u.f));
1344 dst->S.u.i = cpu_to_le64(fio_double_to_uint64(src->S.u.f));
1345}
1346
1347static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
1348{
1349 int i;
1350
1351 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1352 dst->max_run[i] = cpu_to_le64(src->max_run[i]);
1353 dst->min_run[i] = cpu_to_le64(src->min_run[i]);
1354 dst->max_bw[i] = cpu_to_le64(src->max_bw[i]);
1355 dst->min_bw[i] = cpu_to_le64(src->min_bw[i]);
1356 dst->io_kb[i] = cpu_to_le64(src->io_kb[i]);
1357 dst->agg[i] = cpu_to_le64(src->agg[i]);
1358 }
1359
1360 dst->kb_base = cpu_to_le32(src->kb_base);
1361 dst->unit_base = cpu_to_le32(src->unit_base);
1362 dst->groupid = cpu_to_le32(src->groupid);
1363 dst->unified_rw_rep = cpu_to_le32(src->unified_rw_rep);
1364}
1365
1366/*
1367 * Send a CMD_TS, which packs struct thread_stat and group_run_stats
1368 * into a single payload.
1369 */
1370void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs)
1371{
1372 struct cmd_ts_pdu p;
1373 int i, j;
1374
1375 dprint(FD_NET, "server sending end stats\n");
1376
1377 memset(&p, 0, sizeof(p));
1378
1379 strncpy(p.ts.name, ts->name, FIO_JOBNAME_SIZE - 1);
1380 strncpy(p.ts.verror, ts->verror, FIO_VERROR_SIZE - 1);
1381 strncpy(p.ts.description, ts->description, FIO_JOBDESC_SIZE - 1);
1382
1383 p.ts.error = cpu_to_le32(ts->error);
1384 p.ts.thread_number = cpu_to_le32(ts->thread_number);
1385 p.ts.groupid = cpu_to_le32(ts->groupid);
1386 p.ts.pid = cpu_to_le32(ts->pid);
1387 p.ts.members = cpu_to_le32(ts->members);
1388 p.ts.unified_rw_rep = cpu_to_le32(ts->unified_rw_rep);
1389
1390 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1391 convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]);
1392 convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]);
1393 convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]);
1394 convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]);
1395 }
1396
1397 p.ts.usr_time = cpu_to_le64(ts->usr_time);
1398 p.ts.sys_time = cpu_to_le64(ts->sys_time);
1399 p.ts.ctx = cpu_to_le64(ts->ctx);
1400 p.ts.minf = cpu_to_le64(ts->minf);
1401 p.ts.majf = cpu_to_le64(ts->majf);
1402 p.ts.clat_percentiles = cpu_to_le64(ts->clat_percentiles);
1403 p.ts.percentile_precision = cpu_to_le64(ts->percentile_precision);
1404
1405 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
1406 fio_fp64_t *src = &ts->percentile_list[i];
1407 fio_fp64_t *dst = &p.ts.percentile_list[i];
1408
1409 dst->u.i = cpu_to_le64(fio_double_to_uint64(src->u.f));
1410 }
1411
1412 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
1413 p.ts.io_u_map[i] = cpu_to_le32(ts->io_u_map[i]);
1414 p.ts.io_u_submit[i] = cpu_to_le32(ts->io_u_submit[i]);
1415 p.ts.io_u_complete[i] = cpu_to_le32(ts->io_u_complete[i]);
1416 }
1417
1418 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
1419 p.ts.io_u_lat_u[i] = cpu_to_le32(ts->io_u_lat_u[i]);
1420 p.ts.io_u_lat_m[i] = cpu_to_le32(ts->io_u_lat_m[i]);
1421 }
1422
1423 for (i = 0; i < DDIR_RWDIR_CNT; i++)
1424 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
1425 p.ts.io_u_plat[i][j] = cpu_to_le32(ts->io_u_plat[i][j]);
1426
1427 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1428 p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]);
1429 p.ts.short_io_u[i] = cpu_to_le64(ts->short_io_u[i]);
1430 p.ts.drop_io_u[i] = cpu_to_le64(ts->drop_io_u[i]);
1431 }
1432
1433 p.ts.total_submit = cpu_to_le64(ts->total_submit);
1434 p.ts.total_complete = cpu_to_le64(ts->total_complete);
1435
1436 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1437 p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]);
1438 p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]);
1439 }
1440
1441 p.ts.total_run_time = cpu_to_le64(ts->total_run_time);
1442 p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error);
1443 p.ts.total_err_count = cpu_to_le64(ts->total_err_count);
1444 p.ts.first_error = cpu_to_le32(ts->first_error);
1445 p.ts.kb_base = cpu_to_le32(ts->kb_base);
1446 p.ts.unit_base = cpu_to_le32(ts->unit_base);
1447
1448 p.ts.latency_depth = cpu_to_le32(ts->latency_depth);
1449 p.ts.latency_target = cpu_to_le64(ts->latency_target);
1450 p.ts.latency_window = cpu_to_le64(ts->latency_window);
1451 p.ts.latency_percentile.u.i = cpu_to_le64(fio_double_to_uint64(ts->latency_percentile.u.f));
1452
1453 p.ts.nr_block_infos = le64_to_cpu(ts->nr_block_infos);
1454 for (i = 0; i < p.ts.nr_block_infos; i++)
1455 p.ts.block_infos[i] = le32_to_cpu(ts->block_infos[i]);
1456
1457 convert_gs(&p.rs, rs);
1458
1459 fio_net_queue_cmd(FIO_NET_CMD_TS, &p, sizeof(p), NULL, SK_F_COPY);
1460}
1461
1462void fio_server_send_gs(struct group_run_stats *rs)
1463{
1464 struct group_run_stats gs;
1465
1466 dprint(FD_NET, "server sending group run stats\n");
1467
1468 convert_gs(&gs, rs);
1469 fio_net_queue_cmd(FIO_NET_CMD_GS, &gs, sizeof(gs), NULL, SK_F_COPY);
1470}
1471
1472static void convert_agg(struct disk_util_agg *dst, struct disk_util_agg *src)
1473{
1474 int i;
1475
1476 for (i = 0; i < 2; i++) {
1477 dst->ios[i] = cpu_to_le64(src->ios[i]);
1478 dst->merges[i] = cpu_to_le64(src->merges[i]);
1479 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
1480 dst->ticks[i] = cpu_to_le64(src->ticks[i]);
1481 }
1482
1483 dst->io_ticks = cpu_to_le64(src->io_ticks);
1484 dst->time_in_queue = cpu_to_le64(src->time_in_queue);
1485 dst->slavecount = cpu_to_le32(src->slavecount);
1486 dst->max_util.u.i = cpu_to_le64(fio_double_to_uint64(src->max_util.u.f));
1487}
1488
1489static void convert_dus(struct disk_util_stat *dst, struct disk_util_stat *src)
1490{
1491 int i;
1492
1493 dst->name[FIO_DU_NAME_SZ - 1] = '\0';
1494 strncpy((char *) dst->name, (char *) src->name, FIO_DU_NAME_SZ - 1);
1495
1496 for (i = 0; i < 2; i++) {
1497 dst->s.ios[i] = cpu_to_le64(src->s.ios[i]);
1498 dst->s.merges[i] = cpu_to_le64(src->s.merges[i]);
1499 dst->s.sectors[i] = cpu_to_le64(src->s.sectors[i]);
1500 dst->s.ticks[i] = cpu_to_le64(src->s.ticks[i]);
1501 }
1502
1503 dst->s.io_ticks = cpu_to_le64(src->s.io_ticks);
1504 dst->s.time_in_queue = cpu_to_le64(src->s.time_in_queue);
1505 dst->s.msec = cpu_to_le64(src->s.msec);
1506}
1507
1508void fio_server_send_du(void)
1509{
1510 struct disk_util *du;
1511 struct flist_head *entry;
1512 struct cmd_du_pdu pdu;
1513
1514 dprint(FD_NET, "server: sending disk_util %d\n", !flist_empty(&disk_list));
1515
1516 memset(&pdu, 0, sizeof(pdu));
1517
1518 flist_for_each(entry, &disk_list) {
1519 du = flist_entry(entry, struct disk_util, list);
1520
1521 convert_dus(&pdu.dus, &du->dus);
1522 convert_agg(&pdu.agg, &du->agg);
1523
1524 fio_net_queue_cmd(FIO_NET_CMD_DU, &pdu, sizeof(pdu), NULL, SK_F_COPY);
1525 }
1526}
1527
1528static int fio_send_iolog_gz(struct sk_entry *first, struct io_log *log)
1529{
1530 int ret = 0;
1531#ifdef CONFIG_ZLIB
1532 struct sk_entry *entry;
1533 z_stream stream;
1534 void *out_pdu;
1535
1536 /*
1537 * Dirty - since the log is potentially huge, compress it into
1538 * FIO_SERVER_MAX_FRAGMENT_PDU chunks and let the receiving
1539 * side defragment it.
1540 */
1541 out_pdu = malloc(FIO_SERVER_MAX_FRAGMENT_PDU);
1542
1543 stream.zalloc = Z_NULL;
1544 stream.zfree = Z_NULL;
1545 stream.opaque = Z_NULL;
1546
1547 if (deflateInit(&stream, Z_DEFAULT_COMPRESSION) != Z_OK) {
1548 ret = 1;
1549 goto err;
1550 }
1551
1552 stream.next_in = (void *) log->log;
1553 stream.avail_in = log->nr_samples * log_entry_sz(log);
1554
1555 do {
1556 unsigned int this_len;
1557
1558 stream.avail_out = FIO_SERVER_MAX_FRAGMENT_PDU;
1559 stream.next_out = out_pdu;
1560 ret = deflate(&stream, Z_FINISH);
1561 /* may be Z_OK, or Z_STREAM_END */
1562 if (ret < 0)
1563 goto err_zlib;
1564
1565 this_len = FIO_SERVER_MAX_FRAGMENT_PDU - stream.avail_out;
1566
1567 entry = fio_net_prep_cmd(FIO_NET_CMD_IOLOG, out_pdu, this_len,
1568 NULL, SK_F_FREE | SK_F_VEC);
1569 flist_add_tail(&entry->list, &first->next);
1570 } while (stream.avail_in);
1571
1572err_zlib:
1573 deflateEnd(&stream);
1574err:
1575 free(out_pdu);
1576#endif
1577 return ret;
1578}
1579
1580int fio_send_iolog(struct thread_data *td, struct io_log *log, const char *name)
1581{
1582 struct cmd_iolog_pdu pdu;
1583 struct sk_entry *first;
1584 int i, ret = 0;
1585
1586 pdu.nr_samples = cpu_to_le64(log->nr_samples);
1587 pdu.thread_number = cpu_to_le32(td->thread_number);
1588 pdu.log_type = cpu_to_le32(log->log_type);
1589 pdu.compressed = cpu_to_le32(use_zlib);
1590
1591 strncpy((char *) pdu.name, name, FIO_NET_NAME_MAX);
1592 pdu.name[FIO_NET_NAME_MAX - 1] = '\0';
1593
1594 for (i = 0; i < log->nr_samples; i++) {
1595 struct io_sample *s = get_sample(log, i);
1596
1597 s->time = cpu_to_le64(s->time);
1598 s->val = cpu_to_le64(s->val);
1599 s->__ddir = cpu_to_le32(s->__ddir);
1600 s->bs = cpu_to_le32(s->bs);
1601
1602 if (log->log_offset) {
1603 struct io_sample_offset *so = (void *) s;
1604
1605 so->offset = cpu_to_le64(so->offset);
1606 }
1607 }
1608
1609 /*
1610 * Assemble header entry first
1611 */
1612 first = fio_net_prep_cmd(FIO_NET_CMD_IOLOG, &pdu, sizeof(pdu), NULL, SK_F_COPY | SK_F_VEC);
1613
1614 /*
1615 * Now append actual log entries. Compress if we can, otherwise just
1616 * plain text output.
1617 */
1618 if (use_zlib)
1619 ret = fio_send_iolog_gz(first, log);
1620 else {
1621 struct sk_entry *entry;
1622
1623 entry = fio_net_prep_cmd(FIO_NET_CMD_IOLOG, log->log,
1624 log->nr_samples * log_entry_sz(log),
1625 NULL, SK_F_FREE | SK_F_VEC);
1626 flist_add_tail(&entry->list, &first->next);
1627 }
1628
1629 return ret;
1630}
1631
1632void fio_server_send_add_job(struct thread_data *td)
1633{
1634 struct cmd_add_job_pdu pdu;
1635
1636 memset(&pdu, 0, sizeof(pdu));
1637 pdu.thread_number = cpu_to_le32(td->thread_number);
1638 pdu.groupid = cpu_to_le32(td->groupid);
1639 convert_thread_options_to_net(&pdu.top, &td->o);
1640
1641 fio_net_queue_cmd(FIO_NET_CMD_ADD_JOB, &pdu, sizeof(pdu), NULL, SK_F_COPY);
1642}
1643
1644void fio_server_send_start(struct thread_data *td)
1645{
1646 struct sk_out *sk_out = pthread_getspecific(sk_out_key);
1647
1648 assert(sk_out->sk != -1);
1649
1650 fio_net_queue_cmd(FIO_NET_CMD_SERVER_START, NULL, 0, 0, SK_F_SIMPLE);
1651}
1652
1653int fio_server_get_verify_state(const char *name, int threadnumber,
1654 void **datap, int *version)
1655{
1656 struct thread_io_list *s;
1657 struct cmd_sendfile out;
1658 struct cmd_reply *rep;
1659 uint64_t tag;
1660 void *data;
1661
1662 dprint(FD_NET, "server: request verify state\n");
1663
1664 rep = smalloc(sizeof(*rep));
1665 if (!rep) {
1666 log_err("fio: smalloc pool too small\n");
1667 return 1;
1668 }
1669
1670 __fio_mutex_init(&rep->lock, FIO_MUTEX_LOCKED);
1671 rep->data = NULL;
1672 rep->error = 0;
1673
1674 verify_state_gen_name((char *) out.path, sizeof(out.path), name, me,
1675 threadnumber);
1676 tag = (uint64_t) (uintptr_t) rep;
1677 fio_net_queue_cmd(FIO_NET_CMD_SENDFILE, &out, sizeof(out), &tag, SK_F_COPY);
1678
1679 /*
1680 * Wait for the backend to receive the reply
1681 */
1682 if (fio_mutex_down_timeout(&rep->lock, 10000)) {
1683 log_err("fio: timed out waiting for reply\n");
1684 goto fail;
1685 }
1686
1687 if (rep->error) {
1688 log_err("fio: failure on receiving state file: %s\n", strerror(rep->error));
1689fail:
1690 *datap = NULL;
1691 sfree(rep);
1692 fio_net_queue_quit();
1693 return 1;
1694 }
1695
1696 /*
1697 * The format is verify_state_hdr, then thread_io_list. Verify
1698 * the header, and the thread_io_list checksum
1699 */
1700 s = rep->data + sizeof(struct verify_state_hdr);
1701 if (verify_state_hdr(rep->data, s, version))
1702 goto fail;
1703
1704 /*
1705 * Don't need the header from now, copy just the thread_io_list
1706 */
1707 rep->size -= sizeof(struct verify_state_hdr);
1708 data = malloc(rep->size);
1709 memcpy(data, s, rep->size);
1710 *datap = data;
1711
1712 sfree(rep->data);
1713 __fio_mutex_remove(&rep->lock);
1714 sfree(rep);
1715 return 0;
1716}
1717
1718static int fio_init_server_ip(void)
1719{
1720 struct sockaddr *addr;
1721 socklen_t socklen;
1722 char buf[80];
1723 const char *str;
1724 int sk, opt;
1725
1726 if (use_ipv6)
1727 sk = socket(AF_INET6, SOCK_STREAM, 0);
1728 else
1729 sk = socket(AF_INET, SOCK_STREAM, 0);
1730
1731 if (sk < 0) {
1732 log_err("fio: socket: %s\n", strerror(errno));
1733 return -1;
1734 }
1735
1736 opt = 1;
1737 if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, (void *)&opt, sizeof(opt)) < 0) {
1738 log_err("fio: setsockopt(REUSEADDR): %s\n", strerror(errno));
1739 close(sk);
1740 return -1;
1741 }
1742#ifdef SO_REUSEPORT
1743 if (setsockopt(sk, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) {
1744 log_err("fio: setsockopt(REUSEPORT): %s\n", strerror(errno));
1745 close(sk);
1746 return -1;
1747 }
1748#endif
1749
1750 if (use_ipv6) {
1751 const void *src = &saddr_in6.sin6_addr;
1752
1753 addr = (struct sockaddr *) &saddr_in6;
1754 socklen = sizeof(saddr_in6);
1755 saddr_in6.sin6_family = AF_INET6;
1756 str = inet_ntop(AF_INET6, src, buf, sizeof(buf));
1757 } else {
1758 const void *src = &saddr_in.sin_addr;
1759
1760 addr = (struct sockaddr *) &saddr_in;
1761 socklen = sizeof(saddr_in);
1762 saddr_in.sin_family = AF_INET;
1763 str = inet_ntop(AF_INET, src, buf, sizeof(buf));
1764 }
1765
1766 if (bind(sk, addr, socklen) < 0) {
1767 log_err("fio: bind: %s\n", strerror(errno));
1768 log_info("fio: failed with IPv%c %s\n", use_ipv6 ? '6' : '4', str);
1769 close(sk);
1770 return -1;
1771 }
1772
1773 return sk;
1774}
1775
1776static int fio_init_server_sock(void)
1777{
1778 struct sockaddr_un addr;
1779 socklen_t len;
1780 mode_t mode;
1781 int sk;
1782
1783 sk = socket(AF_UNIX, SOCK_STREAM, 0);
1784 if (sk < 0) {
1785 log_err("fio: socket: %s\n", strerror(errno));
1786 return -1;
1787 }
1788
1789 mode = umask(000);
1790
1791 memset(&addr, 0, sizeof(addr));
1792 addr.sun_family = AF_UNIX;
1793 strncpy(addr.sun_path, bind_sock, sizeof(addr.sun_path) - 1);
1794
1795 len = sizeof(addr.sun_family) + strlen(bind_sock) + 1;
1796
1797 if (bind(sk, (struct sockaddr *) &addr, len) < 0) {
1798 log_err("fio: bind: %s\n", strerror(errno));
1799 close(sk);
1800 return -1;
1801 }
1802
1803 umask(mode);
1804 return sk;
1805}
1806
1807static int fio_init_server_connection(void)
1808{
1809 char bind_str[128];
1810 int sk;
1811
1812 dprint(FD_NET, "starting server\n");
1813
1814 if (!bind_sock)
1815 sk = fio_init_server_ip();
1816 else
1817 sk = fio_init_server_sock();
1818
1819 if (sk < 0)
1820 return sk;
1821
1822 memset(bind_str, 0, sizeof(bind_str));
1823
1824 if (!bind_sock) {
1825 char *p, port[16];
1826 const void *src;
1827 int af;
1828
1829 if (use_ipv6) {
1830 af = AF_INET6;
1831 src = &saddr_in6.sin6_addr;
1832 } else {
1833 af = AF_INET;
1834 src = &saddr_in.sin_addr;
1835 }
1836
1837 p = (char *) inet_ntop(af, src, bind_str, sizeof(bind_str));
1838
1839 sprintf(port, ",%u", fio_net_port);
1840 if (p)
1841 strcat(p, port);
1842 else
1843 strncpy(bind_str, port, sizeof(bind_str) - 1);
1844 } else
1845 strncpy(bind_str, bind_sock, sizeof(bind_str) - 1);
1846
1847 log_info("fio: server listening on %s\n", bind_str);
1848
1849 if (listen(sk, 0) < 0) {
1850 log_err("fio: listen: %s\n", strerror(errno));
1851 close(sk);
1852 return -1;
1853 }
1854
1855 return sk;
1856}
1857
1858int fio_server_parse_host(const char *host, int ipv6, struct in_addr *inp,
1859 struct in6_addr *inp6)
1860
1861{
1862 int ret = 0;
1863
1864 if (ipv6)
1865 ret = inet_pton(AF_INET6, host, inp6);
1866 else
1867 ret = inet_pton(AF_INET, host, inp);
1868
1869 if (ret != 1) {
1870 struct addrinfo hints, *res;
1871
1872 memset(&hints, 0, sizeof(hints));
1873 hints.ai_family = ipv6 ? AF_INET6 : AF_INET;
1874 hints.ai_socktype = SOCK_STREAM;
1875
1876 ret = getaddrinfo(host, NULL, &hints, &res);
1877 if (ret) {
1878 log_err("fio: failed to resolve <%s> (%s)\n", host,
1879 gai_strerror(ret));
1880 return 1;
1881 }
1882
1883 if (ipv6)
1884 memcpy(inp6, &((struct sockaddr_in6 *) res->ai_addr)->sin6_addr, sizeof(*inp6));
1885 else
1886 memcpy(inp, &((struct sockaddr_in *) res->ai_addr)->sin_addr, sizeof(*inp));
1887
1888 ret = 1;
1889 freeaddrinfo(res);
1890 }
1891
1892 return !(ret == 1);
1893}
1894
1895/*
1896 * Parse a host/ip/port string. Reads from 'str'.
1897 *
1898 * Outputs:
1899 *
1900 * For IPv4:
1901 * *ptr is the host, *port is the port, inp is the destination.
1902 * For IPv6:
1903 * *ptr is the host, *port is the port, inp6 is the dest, and *ipv6 is 1.
1904 * For local domain sockets:
1905 * *ptr is the filename, *is_sock is 1.
1906 */
1907int fio_server_parse_string(const char *str, char **ptr, int *is_sock,
1908 int *port, struct in_addr *inp,
1909 struct in6_addr *inp6, int *ipv6)
1910{
1911 const char *host = str;
1912 char *portp;
1913 int lport = 0;
1914
1915 *ptr = NULL;
1916 *is_sock = 0;
1917 *port = fio_net_port;
1918 *ipv6 = 0;
1919
1920 if (!strncmp(str, "sock:", 5)) {
1921 *ptr = strdup(str + 5);
1922 *is_sock = 1;
1923
1924 return 0;
1925 }
1926
1927 /*
1928 * Is it ip:<ip or host>:port
1929 */
1930 if (!strncmp(host, "ip:", 3))
1931 host += 3;
1932 else if (!strncmp(host, "ip4:", 4))
1933 host += 4;
1934 else if (!strncmp(host, "ip6:", 4)) {
1935 host += 4;
1936 *ipv6 = 1;
1937 } else if (host[0] == ':') {
1938 /* String is :port */
1939 host++;
1940 lport = atoi(host);
1941 if (!lport || lport > 65535) {
1942 log_err("fio: bad server port %u\n", lport);
1943 return 1;
1944 }
1945 /* no hostname given, we are done */
1946 *port = lport;
1947 return 0;
1948 }
1949
1950 /*
1951 * If no port seen yet, check if there's a last ',' at the end
1952 */
1953 if (!lport) {
1954 portp = strchr(host, ',');
1955 if (portp) {
1956 *portp = '\0';
1957 portp++;
1958 lport = atoi(portp);
1959 if (!lport || lport > 65535) {
1960 log_err("fio: bad server port %u\n", lport);
1961 return 1;
1962 }
1963 }
1964 }
1965
1966 if (lport)
1967 *port = lport;
1968
1969 if (!strlen(host))
1970 return 0;
1971
1972 *ptr = strdup(host);
1973
1974 if (fio_server_parse_host(*ptr, *ipv6, inp, inp6)) {
1975 free(*ptr);
1976 *ptr = NULL;
1977 return 1;
1978 }
1979
1980 if (*port == 0)
1981 *port = fio_net_port;
1982
1983 return 0;
1984}
1985
1986/*
1987 * Server arg should be one of:
1988 *
1989 * sock:/path/to/socket
1990 * ip:1.2.3.4
1991 * 1.2.3.4
1992 *
1993 * Where sock uses unix domain sockets, and ip binds the server to
1994 * a specific interface. If no arguments are given to the server, it
1995 * uses IP and binds to 0.0.0.0.
1996 *
1997 */
1998static int fio_handle_server_arg(void)
1999{
2000 int port = fio_net_port;
2001 int is_sock, ret = 0;
2002
2003 saddr_in.sin_addr.s_addr = htonl(INADDR_ANY);
2004
2005 if (!fio_server_arg)
2006 goto out;
2007
2008 ret = fio_server_parse_string(fio_server_arg, &bind_sock, &is_sock,
2009 &port, &saddr_in.sin_addr,
2010 &saddr_in6.sin6_addr, &use_ipv6);
2011
2012 if (!is_sock && bind_sock) {
2013 free(bind_sock);
2014 bind_sock = NULL;
2015 }
2016
2017out:
2018 fio_net_port = port;
2019 saddr_in.sin_port = htons(port);
2020 saddr_in6.sin6_port = htons(port);
2021 return ret;
2022}
2023
2024static void sig_int(int sig)
2025{
2026 if (bind_sock)
2027 unlink(bind_sock);
2028}
2029
2030static void set_sig_handlers(void)
2031{
2032 struct sigaction act;
2033
2034 memset(&act, 0, sizeof(act));
2035 act.sa_handler = sig_int;
2036 act.sa_flags = SA_RESTART;
2037 sigaction(SIGINT, &act, NULL);
2038}
2039
2040static int fio_server(void)
2041{
2042 struct sk_out *sk_out;
2043 int sk, ret;
2044
2045 dprint(FD_NET, "starting server\n");
2046
2047 if (fio_handle_server_arg())
2048 return -1;
2049
2050 sk = fio_init_server_connection();
2051 if (sk < 0)
2052 return -1;
2053
2054 set_sig_handlers();
2055
2056 if (pthread_key_create(&sk_out_key, NULL))
2057 log_err("fio: can't create sk_out backend key\n");
2058
2059 sk_out = smalloc(sizeof(*sk_out));
2060 INIT_FLIST_HEAD(&sk_out->list);
2061 sk_out->lock = fio_mutex_init(FIO_MUTEX_UNLOCKED);
2062 sk_out->wait = fio_mutex_init(FIO_MUTEX_LOCKED);
2063
2064 sk_out_assign(sk_out);
2065
2066 ret = accept_loop(sk_out, sk);
2067
2068 close(sk);
2069
2070 if (fio_server_arg) {
2071 free(fio_server_arg);
2072 fio_server_arg = NULL;
2073 }
2074 if (bind_sock)
2075 free(bind_sock);
2076
2077 sk_out_drop();
2078
2079 return ret;
2080}
2081
2082void fio_server_got_signal(int signal)
2083{
2084 struct sk_out *sk_out = pthread_getspecific(sk_out_key);
2085
2086 assert(sk_out);
2087
2088 if (signal == SIGPIPE)
2089 sk_out->sk = -1;
2090 else {
2091 log_info("\nfio: terminating on signal %d\n", signal);
2092 exit_backend = 1;
2093 }
2094}
2095
2096static int check_existing_pidfile(const char *pidfile)
2097{
2098 struct stat sb;
2099 char buf[16];
2100 pid_t pid;
2101 FILE *f;
2102
2103 if (stat(pidfile, &sb))
2104 return 0;
2105
2106 f = fopen(pidfile, "r");
2107 if (!f)
2108 return 0;
2109
2110 if (fread(buf, sb.st_size, 1, f) <= 0) {
2111 fclose(f);
2112 return 1;
2113 }
2114 fclose(f);
2115
2116 pid = atoi(buf);
2117 if (kill(pid, SIGCONT) < 0)
2118 return errno != ESRCH;
2119
2120 return 1;
2121}
2122
2123static int write_pid(pid_t pid, const char *pidfile)
2124{
2125 FILE *fpid;
2126
2127 fpid = fopen(pidfile, "w");
2128 if (!fpid) {
2129 log_err("fio: failed opening pid file %s\n", pidfile);
2130 return 1;
2131 }
2132
2133 fprintf(fpid, "%u\n", (unsigned int) pid);
2134 fclose(fpid);
2135 return 0;
2136}
2137
2138/*
2139 * If pidfile is specified, background us.
2140 */
2141int fio_start_server(char *pidfile)
2142{
2143 pid_t pid;
2144 int ret;
2145
2146#if defined(WIN32)
2147 WSADATA wsd;
2148 WSAStartup(MAKEWORD(2, 2), &wsd);
2149#endif
2150
2151 if (!pidfile)
2152 return fio_server();
2153
2154 if (check_existing_pidfile(pidfile)) {
2155 log_err("fio: pidfile %s exists and server appears alive\n",
2156 pidfile);
2157 free(pidfile);
2158 return -1;
2159 }
2160
2161 pid = fork();
2162 if (pid < 0) {
2163 log_err("fio: failed server fork: %s", strerror(errno));
2164 free(pidfile);
2165 return -1;
2166 } else if (pid) {
2167 ret = write_pid(pid, pidfile);
2168 free(pidfile);
2169 _exit(ret);
2170 }
2171
2172 setsid();
2173 openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER);
2174 log_syslog = 1;
2175 close(STDIN_FILENO);
2176 close(STDOUT_FILENO);
2177 close(STDERR_FILENO);
2178 f_out = NULL;
2179 f_err = NULL;
2180
2181 ret = fio_server();
2182
2183 closelog();
2184 unlink(pidfile);
2185 free(pidfile);
2186 return ret;
2187}
2188
2189void fio_server_set_arg(const char *arg)
2190{
2191 fio_server_arg = strdup(arg);
2192}
fio - Flexible IO Tester