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
31 int fio_net_port = FIO_NET_PORT;
32
33 int exit_backend = 0;
34
35 enum {
36 SK_F_FREE = 1,
37 SK_F_COPY = 2,
38 SK_F_SIMPLE = 4,
39 SK_F_VEC = 8,
40 SK_F_INLINE = 16,
41 };
42
43 struct sk_entry {
44 struct flist_head list; /* link on sk_out->list */
45 int flags; /* SK_F_* */
46 int opcode; /* Actual command fields */
47 void *buf;
48 off_t size;
49 uint64_t tag;
50 struct flist_head next; /* Other sk_entry's, if linked command */
51 };
52
53 static char *fio_server_arg;
54 static char *bind_sock;
55 static struct sockaddr_in saddr_in;
56 static struct sockaddr_in6 saddr_in6;
57 static int use_ipv6;
58 #ifdef CONFIG_ZLIB
59 static unsigned int has_zlib = 1;
60 #else
61 static unsigned int has_zlib = 0;
62 #endif
63 static unsigned int use_zlib;
64 static char me[128];
65
66 static pthread_key_t sk_out_key;
67
68 struct fio_fork_item {
69 struct flist_head list;
70 int exitval;
71 int signal;
72 int exited;
73 pid_t pid;
74 };
75
76 struct cmd_reply {
77 struct fio_mutex lock;
78 void *data;
79 size_t size;
80 int error;
81 };
82
83 static const char *fio_server_ops[FIO_NET_CMD_NR] = {
84 "",
85 "QUIT",
86 "EXIT",
87 "JOB",
88 "JOBLINE",
89 "TEXT",
90 "TS",
91 "GS",
92 "SEND_ETA",
93 "ETA",
94 "PROBE",
95 "START",
96 "STOP",
97 "DISK_UTIL",
98 "SERVER_START",
99 "ADD_JOB",
100 "RUN",
101 "IOLOG",
102 "UPDATE_JOB",
103 "LOAD_FILE",
104 "VTRIGGER",
105 "SENDFILE",
106 "JOB_OPT",
107 };
108
sk_lock(struct sk_out * sk_out)109 static void sk_lock(struct sk_out *sk_out)
110 {
111 fio_mutex_down(&sk_out->lock);
112 }
113
sk_unlock(struct sk_out * sk_out)114 static void sk_unlock(struct sk_out *sk_out)
115 {
116 fio_mutex_up(&sk_out->lock);
117 }
118
sk_out_assign(struct sk_out * sk_out)119 void sk_out_assign(struct sk_out *sk_out)
120 {
121 if (!sk_out)
122 return;
123
124 sk_lock(sk_out);
125 sk_out->refs++;
126 sk_unlock(sk_out);
127 pthread_setspecific(sk_out_key, sk_out);
128 }
129
sk_out_free(struct sk_out * sk_out)130 static void sk_out_free(struct sk_out *sk_out)
131 {
132 __fio_mutex_remove(&sk_out->lock);
133 __fio_mutex_remove(&sk_out->wait);
134 __fio_mutex_remove(&sk_out->xmit);
135 sfree(sk_out);
136 }
137
__sk_out_drop(struct sk_out * sk_out)138 static int __sk_out_drop(struct sk_out *sk_out)
139 {
140 if (sk_out) {
141 int refs;
142
143 sk_lock(sk_out);
144 assert(sk_out->refs != 0);
145 refs = --sk_out->refs;
146 sk_unlock(sk_out);
147
148 if (!refs) {
149 sk_out_free(sk_out);
150 pthread_setspecific(sk_out_key, NULL);
151 return 0;
152 }
153 }
154
155 return 1;
156 }
157
sk_out_drop(void)158 void sk_out_drop(void)
159 {
160 struct sk_out *sk_out;
161
162 sk_out = pthread_getspecific(sk_out_key);
163 __sk_out_drop(sk_out);
164 }
165
__fio_init_net_cmd(struct fio_net_cmd * cmd,uint16_t opcode,uint32_t pdu_len,uint64_t tag)166 static void __fio_init_net_cmd(struct fio_net_cmd *cmd, uint16_t opcode,
167 uint32_t pdu_len, uint64_t tag)
168 {
169 memset(cmd, 0, sizeof(*cmd));
170
171 cmd->version = __cpu_to_le16(FIO_SERVER_VER);
172 cmd->opcode = cpu_to_le16(opcode);
173 cmd->tag = cpu_to_le64(tag);
174 cmd->pdu_len = cpu_to_le32(pdu_len);
175 }
176
177
fio_init_net_cmd(struct fio_net_cmd * cmd,uint16_t opcode,const void * pdu,uint32_t pdu_len,uint64_t tag)178 static void fio_init_net_cmd(struct fio_net_cmd *cmd, uint16_t opcode,
179 const void *pdu, uint32_t pdu_len, uint64_t tag)
180 {
181 __fio_init_net_cmd(cmd, opcode, pdu_len, tag);
182
183 if (pdu)
184 memcpy(&cmd->payload, pdu, pdu_len);
185 }
186
fio_server_op(unsigned int op)187 const char *fio_server_op(unsigned int op)
188 {
189 static char buf[32];
190
191 if (op < FIO_NET_CMD_NR)
192 return fio_server_ops[op];
193
194 sprintf(buf, "UNKNOWN/%d", op);
195 return buf;
196 }
197
iov_total_len(const struct iovec * iov,int count)198 static ssize_t iov_total_len(const struct iovec *iov, int count)
199 {
200 ssize_t ret = 0;
201
202 while (count--) {
203 ret += iov->iov_len;
204 iov++;
205 }
206
207 return ret;
208 }
209
fio_sendv_data(int sk,struct iovec * iov,int count)210 static int fio_sendv_data(int sk, struct iovec *iov, int count)
211 {
212 ssize_t total_len = iov_total_len(iov, count);
213 ssize_t ret;
214
215 do {
216 ret = writev(sk, iov, count);
217 if (ret > 0) {
218 total_len -= ret;
219 if (!total_len)
220 break;
221
222 while (ret) {
223 if (ret >= iov->iov_len) {
224 ret -= iov->iov_len;
225 iov++;
226 continue;
227 }
228 iov->iov_base += ret;
229 iov->iov_len -= ret;
230 ret = 0;
231 }
232 } else if (!ret)
233 break;
234 else if (errno == EAGAIN || errno == EINTR)
235 continue;
236 else
237 break;
238 } while (!exit_backend);
239
240 if (!total_len)
241 return 0;
242
243 return 1;
244 }
245
fio_send_data(int sk,const void * p,unsigned int len)246 static int fio_send_data(int sk, const void *p, unsigned int len)
247 {
248 struct iovec iov = { .iov_base = (void *) p, .iov_len = len };
249
250 assert(len <= sizeof(struct fio_net_cmd) + FIO_SERVER_MAX_FRAGMENT_PDU);
251
252 return fio_sendv_data(sk, &iov, 1);
253 }
254
fio_recv_data(int sk,void * p,unsigned int len,bool wait)255 static int fio_recv_data(int sk, void *p, unsigned int len, bool wait)
256 {
257 int flags;
258
259 if (wait)
260 flags = MSG_WAITALL;
261 else
262 flags = OS_MSG_DONTWAIT;
263
264 do {
265 int ret = recv(sk, p, len, flags);
266
267 if (ret > 0) {
268 len -= ret;
269 if (!len)
270 break;
271 p += ret;
272 continue;
273 } else if (!ret)
274 break;
275 else if (errno == EAGAIN || errno == EINTR) {
276 if (wait)
277 continue;
278 break;
279 } else
280 break;
281 } while (!exit_backend);
282
283 if (!len)
284 return 0;
285
286 return -1;
287 }
288
verify_convert_cmd(struct fio_net_cmd * cmd)289 static int verify_convert_cmd(struct fio_net_cmd *cmd)
290 {
291 uint16_t crc;
292
293 cmd->cmd_crc16 = le16_to_cpu(cmd->cmd_crc16);
294 cmd->pdu_crc16 = le16_to_cpu(cmd->pdu_crc16);
295
296 crc = fio_crc16(cmd, FIO_NET_CMD_CRC_SZ);
297 if (crc != cmd->cmd_crc16) {
298 log_err("fio: server bad crc on command (got %x, wanted %x)\n",
299 cmd->cmd_crc16, crc);
300 return 1;
301 }
302
303 cmd->version = le16_to_cpu(cmd->version);
304 cmd->opcode = le16_to_cpu(cmd->opcode);
305 cmd->flags = le32_to_cpu(cmd->flags);
306 cmd->tag = le64_to_cpu(cmd->tag);
307 cmd->pdu_len = le32_to_cpu(cmd->pdu_len);
308
309 switch (cmd->version) {
310 case FIO_SERVER_VER:
311 break;
312 default:
313 log_err("fio: bad server cmd version %d\n", cmd->version);
314 return 1;
315 }
316
317 if (cmd->pdu_len > FIO_SERVER_MAX_FRAGMENT_PDU) {
318 log_err("fio: command payload too large: %u\n", cmd->pdu_len);
319 return 1;
320 }
321
322 return 0;
323 }
324
325 /*
326 * Read (and defragment, if necessary) incoming commands
327 */
fio_net_recv_cmd(int sk,bool wait)328 struct fio_net_cmd *fio_net_recv_cmd(int sk, bool wait)
329 {
330 struct fio_net_cmd cmd, *tmp, *cmdret = NULL;
331 size_t cmd_size = 0, pdu_offset = 0;
332 uint16_t crc;
333 int ret, first = 1;
334 void *pdu = NULL;
335
336 do {
337 ret = fio_recv_data(sk, &cmd, sizeof(cmd), wait);
338 if (ret)
339 break;
340
341 /* We have a command, verify it and swap if need be */
342 ret = verify_convert_cmd(&cmd);
343 if (ret)
344 break;
345
346 if (first) {
347 /* if this is text, add room for \0 at the end */
348 cmd_size = sizeof(cmd) + cmd.pdu_len + 1;
349 assert(!cmdret);
350 } else
351 cmd_size += cmd.pdu_len;
352
353 if (cmd_size / 1024 > FIO_SERVER_MAX_CMD_MB * 1024) {
354 log_err("fio: cmd+pdu too large (%llu)\n", (unsigned long long) cmd_size);
355 ret = 1;
356 break;
357 }
358
359 tmp = realloc(cmdret, cmd_size);
360 if (!tmp) {
361 log_err("fio: server failed allocating cmd\n");
362 ret = 1;
363 break;
364 }
365 cmdret = tmp;
366
367 if (first)
368 memcpy(cmdret, &cmd, sizeof(cmd));
369 else if (cmdret->opcode != cmd.opcode) {
370 log_err("fio: fragment opcode mismatch (%d != %d)\n",
371 cmdret->opcode, cmd.opcode);
372 ret = 1;
373 break;
374 }
375
376 if (!cmd.pdu_len)
377 break;
378
379 /* There's payload, get it */
380 pdu = (void *) cmdret->payload + pdu_offset;
381 ret = fio_recv_data(sk, pdu, cmd.pdu_len, wait);
382 if (ret)
383 break;
384
385 /* Verify payload crc */
386 crc = fio_crc16(pdu, cmd.pdu_len);
387 if (crc != cmd.pdu_crc16) {
388 log_err("fio: server bad crc on payload ");
389 log_err("(got %x, wanted %x)\n", cmd.pdu_crc16, crc);
390 ret = 1;
391 break;
392 }
393
394 pdu_offset += cmd.pdu_len;
395 if (!first)
396 cmdret->pdu_len += cmd.pdu_len;
397 first = 0;
398 } while (cmd.flags & FIO_NET_CMD_F_MORE);
399
400 if (ret) {
401 free(cmdret);
402 cmdret = NULL;
403 } else if (cmdret) {
404 /* zero-terminate text input */
405 if (cmdret->pdu_len) {
406 if (cmdret->opcode == FIO_NET_CMD_TEXT) {
407 struct cmd_text_pdu *__pdu = (struct cmd_text_pdu *) cmdret->payload;
408 char *buf = (char *) __pdu->buf;
409
410 buf[__pdu->buf_len] = '\0';
411 } else if (cmdret->opcode == FIO_NET_CMD_JOB) {
412 struct cmd_job_pdu *__pdu = (struct cmd_job_pdu *) cmdret->payload;
413 char *buf = (char *) __pdu->buf;
414 int len = le32_to_cpu(__pdu->buf_len);
415
416 buf[len] = '\0';
417 }
418 }
419
420 /* frag flag is internal */
421 cmdret->flags &= ~FIO_NET_CMD_F_MORE;
422 }
423
424 return cmdret;
425 }
426
add_reply(uint64_t tag,struct flist_head * list)427 static void add_reply(uint64_t tag, struct flist_head *list)
428 {
429 struct fio_net_cmd_reply *reply;
430
431 reply = (struct fio_net_cmd_reply *) (uintptr_t) tag;
432 flist_add_tail(&reply->list, list);
433 }
434
alloc_reply(uint64_t tag,uint16_t opcode)435 static uint64_t alloc_reply(uint64_t tag, uint16_t opcode)
436 {
437 struct fio_net_cmd_reply *reply;
438
439 reply = calloc(1, sizeof(*reply));
440 INIT_FLIST_HEAD(&reply->list);
441 fio_gettime(&reply->tv, NULL);
442 reply->saved_tag = tag;
443 reply->opcode = opcode;
444
445 return (uintptr_t) reply;
446 }
447
free_reply(uint64_t tag)448 static void free_reply(uint64_t tag)
449 {
450 struct fio_net_cmd_reply *reply;
451
452 reply = (struct fio_net_cmd_reply *) (uintptr_t) tag;
453 free(reply);
454 }
455
fio_net_cmd_crc_pdu(struct fio_net_cmd * cmd,const void * pdu)456 static void fio_net_cmd_crc_pdu(struct fio_net_cmd *cmd, const void *pdu)
457 {
458 uint32_t pdu_len;
459
460 cmd->cmd_crc16 = __cpu_to_le16(fio_crc16(cmd, FIO_NET_CMD_CRC_SZ));
461
462 pdu_len = le32_to_cpu(cmd->pdu_len);
463 cmd->pdu_crc16 = __cpu_to_le16(fio_crc16(pdu, pdu_len));
464 }
465
fio_net_cmd_crc(struct fio_net_cmd * cmd)466 static void fio_net_cmd_crc(struct fio_net_cmd *cmd)
467 {
468 fio_net_cmd_crc_pdu(cmd, cmd->payload);
469 }
470
fio_net_send_cmd(int fd,uint16_t opcode,const void * buf,off_t size,uint64_t * tagptr,struct flist_head * list)471 int fio_net_send_cmd(int fd, uint16_t opcode, const void *buf, off_t size,
472 uint64_t *tagptr, struct flist_head *list)
473 {
474 struct fio_net_cmd *cmd = NULL;
475 size_t this_len, cur_len = 0;
476 uint64_t tag;
477 int ret;
478
479 if (list) {
480 assert(tagptr);
481 tag = *tagptr = alloc_reply(*tagptr, opcode);
482 } else
483 tag = tagptr ? *tagptr : 0;
484
485 do {
486 this_len = size;
487 if (this_len > FIO_SERVER_MAX_FRAGMENT_PDU)
488 this_len = FIO_SERVER_MAX_FRAGMENT_PDU;
489
490 if (!cmd || cur_len < sizeof(*cmd) + this_len) {
491 if (cmd)
492 free(cmd);
493
494 cur_len = sizeof(*cmd) + this_len;
495 cmd = malloc(cur_len);
496 }
497
498 fio_init_net_cmd(cmd, opcode, buf, this_len, tag);
499
500 if (this_len < size)
501 cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE);
502
503 fio_net_cmd_crc(cmd);
504
505 ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len);
506 size -= this_len;
507 buf += this_len;
508 } while (!ret && size);
509
510 if (list) {
511 if (ret)
512 free_reply(tag);
513 else
514 add_reply(tag, list);
515 }
516
517 if (cmd)
518 free(cmd);
519
520 return ret;
521 }
522
fio_net_prep_cmd(uint16_t opcode,void * buf,size_t size,uint64_t * tagptr,int flags)523 static struct sk_entry *fio_net_prep_cmd(uint16_t opcode, void *buf,
524 size_t size, uint64_t *tagptr,
525 int flags)
526 {
527 struct sk_entry *entry;
528
529 entry = smalloc(sizeof(*entry));
530 INIT_FLIST_HEAD(&entry->next);
531 entry->opcode = opcode;
532 if (flags & SK_F_COPY) {
533 entry->buf = smalloc(size);
534 memcpy(entry->buf, buf, size);
535 } else
536 entry->buf = buf;
537
538 entry->size = size;
539 if (tagptr)
540 entry->tag = *tagptr;
541 else
542 entry->tag = 0;
543 entry->flags = flags;
544 return entry;
545 }
546
547 static int handle_sk_entry(struct sk_out *sk_out, struct sk_entry *entry);
548
fio_net_queue_entry(struct sk_entry * entry)549 static void fio_net_queue_entry(struct sk_entry *entry)
550 {
551 struct sk_out *sk_out = pthread_getspecific(sk_out_key);
552
553 if (entry->flags & SK_F_INLINE)
554 handle_sk_entry(sk_out, entry);
555 else {
556 sk_lock(sk_out);
557 flist_add_tail(&entry->list, &sk_out->list);
558 sk_unlock(sk_out);
559
560 fio_mutex_up(&sk_out->wait);
561 }
562 }
563
fio_net_queue_cmd(uint16_t opcode,void * buf,off_t size,uint64_t * tagptr,int flags)564 static int fio_net_queue_cmd(uint16_t opcode, void *buf, off_t size,
565 uint64_t *tagptr, int flags)
566 {
567 struct sk_entry *entry;
568
569 entry = fio_net_prep_cmd(opcode, buf, size, tagptr, flags);
570 if (entry) {
571 fio_net_queue_entry(entry);
572 return 0;
573 }
574
575 return 1;
576 }
577
fio_net_send_simple_stack_cmd(int sk,uint16_t opcode,uint64_t tag)578 static int fio_net_send_simple_stack_cmd(int sk, uint16_t opcode, uint64_t tag)
579 {
580 struct fio_net_cmd cmd;
581
582 fio_init_net_cmd(&cmd, opcode, NULL, 0, tag);
583 fio_net_cmd_crc(&cmd);
584
585 return fio_send_data(sk, &cmd, sizeof(cmd));
586 }
587
588 /*
589 * If 'list' is non-NULL, then allocate and store the sent command for
590 * later verification.
591 */
fio_net_send_simple_cmd(int sk,uint16_t opcode,uint64_t tag,struct flist_head * list)592 int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t tag,
593 struct flist_head *list)
594 {
595 int ret;
596
597 if (list)
598 tag = alloc_reply(tag, opcode);
599
600 ret = fio_net_send_simple_stack_cmd(sk, opcode, tag);
601 if (ret) {
602 if (list)
603 free_reply(tag);
604
605 return ret;
606 }
607
608 if (list)
609 add_reply(tag, list);
610
611 return 0;
612 }
613
fio_net_queue_quit(void)614 static int fio_net_queue_quit(void)
615 {
616 dprint(FD_NET, "server: sending quit\n");
617
618 return fio_net_queue_cmd(FIO_NET_CMD_QUIT, NULL, 0, NULL, SK_F_SIMPLE);
619 }
620
fio_net_send_quit(int sk)621 int fio_net_send_quit(int sk)
622 {
623 dprint(FD_NET, "server: sending quit\n");
624
625 return fio_net_send_simple_cmd(sk, FIO_NET_CMD_QUIT, 0, NULL);
626 }
627
fio_net_send_ack(struct fio_net_cmd * cmd,int error,int signal)628 static int fio_net_send_ack(struct fio_net_cmd *cmd, int error, int signal)
629 {
630 struct cmd_end_pdu epdu;
631 uint64_t tag = 0;
632
633 if (cmd)
634 tag = cmd->tag;
635
636 epdu.error = __cpu_to_le32(error);
637 epdu.signal = __cpu_to_le32(signal);
638 return fio_net_queue_cmd(FIO_NET_CMD_STOP, &epdu, sizeof(epdu), &tag, SK_F_COPY);
639 }
640
fio_net_queue_stop(int error,int signal)641 static int fio_net_queue_stop(int error, int signal)
642 {
643 dprint(FD_NET, "server: sending stop (%d, %d)\n", error, signal);
644 return fio_net_send_ack(NULL, error, signal);
645 }
646
fio_server_add_fork_item(pid_t pid,struct flist_head * list)647 static void fio_server_add_fork_item(pid_t pid, struct flist_head *list)
648 {
649 struct fio_fork_item *ffi;
650
651 ffi = malloc(sizeof(*ffi));
652 ffi->exitval = 0;
653 ffi->signal = 0;
654 ffi->exited = 0;
655 ffi->pid = pid;
656 flist_add_tail(&ffi->list, list);
657 }
658
fio_server_add_conn_pid(struct flist_head * conn_list,pid_t pid)659 static void fio_server_add_conn_pid(struct flist_head *conn_list, pid_t pid)
660 {
661 dprint(FD_NET, "server: forked off connection job (pid=%u)\n", (int) pid);
662 fio_server_add_fork_item(pid, conn_list);
663 }
664
fio_server_add_job_pid(struct flist_head * job_list,pid_t pid)665 static void fio_server_add_job_pid(struct flist_head *job_list, pid_t pid)
666 {
667 dprint(FD_NET, "server: forked off job job (pid=%u)\n", (int) pid);
668 fio_server_add_fork_item(pid, job_list);
669 }
670
fio_server_check_fork_item(struct fio_fork_item * ffi)671 static void fio_server_check_fork_item(struct fio_fork_item *ffi)
672 {
673 int ret, status;
674
675 ret = waitpid(ffi->pid, &status, WNOHANG);
676 if (ret < 0) {
677 if (errno == ECHILD) {
678 log_err("fio: connection pid %u disappeared\n", (int) ffi->pid);
679 ffi->exited = 1;
680 } else
681 log_err("fio: waitpid: %s\n", strerror(errno));
682 } else if (ret == ffi->pid) {
683 if (WIFSIGNALED(status)) {
684 ffi->signal = WTERMSIG(status);
685 ffi->exited = 1;
686 }
687 if (WIFEXITED(status)) {
688 if (WEXITSTATUS(status))
689 ffi->exitval = WEXITSTATUS(status);
690 ffi->exited = 1;
691 }
692 }
693 }
694
fio_server_fork_item_done(struct fio_fork_item * ffi,bool stop)695 static void fio_server_fork_item_done(struct fio_fork_item *ffi, bool stop)
696 {
697 dprint(FD_NET, "pid %u exited, sig=%u, exitval=%d\n", (int) ffi->pid, ffi->signal, ffi->exitval);
698
699 /*
700 * Fold STOP and QUIT...
701 */
702 if (stop) {
703 fio_net_queue_stop(ffi->exitval, ffi->signal);
704 fio_net_queue_quit();
705 }
706
707 flist_del(&ffi->list);
708 free(ffi);
709 }
710
fio_server_check_fork_items(struct flist_head * list,bool stop)711 static void fio_server_check_fork_items(struct flist_head *list, bool stop)
712 {
713 struct flist_head *entry, *tmp;
714 struct fio_fork_item *ffi;
715
716 flist_for_each_safe(entry, tmp, list) {
717 ffi = flist_entry(entry, struct fio_fork_item, list);
718
719 fio_server_check_fork_item(ffi);
720
721 if (ffi->exited)
722 fio_server_fork_item_done(ffi, stop);
723 }
724 }
725
fio_server_check_jobs(struct flist_head * job_list)726 static void fio_server_check_jobs(struct flist_head *job_list)
727 {
728 fio_server_check_fork_items(job_list, true);
729 }
730
fio_server_check_conns(struct flist_head * conn_list)731 static void fio_server_check_conns(struct flist_head *conn_list)
732 {
733 fio_server_check_fork_items(conn_list, false);
734 }
735
handle_load_file_cmd(struct fio_net_cmd * cmd)736 static int handle_load_file_cmd(struct fio_net_cmd *cmd)
737 {
738 struct cmd_load_file_pdu *pdu = (struct cmd_load_file_pdu *) cmd->payload;
739 void *file_name = pdu->file;
740 struct cmd_start_pdu spdu;
741
742 dprint(FD_NET, "server: loading local file %s\n", (char *) file_name);
743
744 pdu->name_len = le16_to_cpu(pdu->name_len);
745 pdu->client_type = le16_to_cpu(pdu->client_type);
746
747 if (parse_jobs_ini(file_name, 0, 0, pdu->client_type)) {
748 fio_net_queue_quit();
749 return -1;
750 }
751
752 spdu.jobs = cpu_to_le32(thread_number);
753 spdu.stat_outputs = cpu_to_le32(stat_number);
754 fio_net_queue_cmd(FIO_NET_CMD_START, &spdu, sizeof(spdu), NULL, SK_F_COPY);
755 return 0;
756 }
757
handle_run_cmd(struct sk_out * sk_out,struct flist_head * job_list,struct fio_net_cmd * cmd)758 static int handle_run_cmd(struct sk_out *sk_out, struct flist_head *job_list,
759 struct fio_net_cmd *cmd)
760 {
761 pid_t pid;
762 int ret;
763
764 sk_out_assign(sk_out);
765
766 fio_time_init();
767 set_genesis_time();
768
769 pid = fork();
770 if (pid) {
771 fio_server_add_job_pid(job_list, pid);
772 return 0;
773 }
774
775 ret = fio_backend(sk_out);
776 free_threads_shm();
777 sk_out_drop();
778 _exit(ret);
779 }
780
handle_job_cmd(struct fio_net_cmd * cmd)781 static int handle_job_cmd(struct fio_net_cmd *cmd)
782 {
783 struct cmd_job_pdu *pdu = (struct cmd_job_pdu *) cmd->payload;
784 void *buf = pdu->buf;
785 struct cmd_start_pdu spdu;
786
787 pdu->buf_len = le32_to_cpu(pdu->buf_len);
788 pdu->client_type = le32_to_cpu(pdu->client_type);
789
790 if (parse_jobs_ini(buf, 1, 0, pdu->client_type)) {
791 fio_net_queue_quit();
792 return -1;
793 }
794
795 spdu.jobs = cpu_to_le32(thread_number);
796 spdu.stat_outputs = cpu_to_le32(stat_number);
797
798 fio_net_queue_cmd(FIO_NET_CMD_START, &spdu, sizeof(spdu), NULL, SK_F_COPY);
799 return 0;
800 }
801
handle_jobline_cmd(struct fio_net_cmd * cmd)802 static int handle_jobline_cmd(struct fio_net_cmd *cmd)
803 {
804 void *pdu = cmd->payload;
805 struct cmd_single_line_pdu *cslp;
806 struct cmd_line_pdu *clp;
807 unsigned long offset;
808 struct cmd_start_pdu spdu;
809 char **argv;
810 int i;
811
812 clp = pdu;
813 clp->lines = le16_to_cpu(clp->lines);
814 clp->client_type = le16_to_cpu(clp->client_type);
815 argv = malloc(clp->lines * sizeof(char *));
816 offset = sizeof(*clp);
817
818 dprint(FD_NET, "server: %d command line args\n", clp->lines);
819
820 for (i = 0; i < clp->lines; i++) {
821 cslp = pdu + offset;
822 argv[i] = (char *) cslp->text;
823
824 offset += sizeof(*cslp) + le16_to_cpu(cslp->len);
825 dprint(FD_NET, "server: %d: %s\n", i, argv[i]);
826 }
827
828 if (parse_cmd_line(clp->lines, argv, clp->client_type)) {
829 fio_net_queue_quit();
830 free(argv);
831 return -1;
832 }
833
834 free(argv);
835
836 spdu.jobs = cpu_to_le32(thread_number);
837 spdu.stat_outputs = cpu_to_le32(stat_number);
838
839 fio_net_queue_cmd(FIO_NET_CMD_START, &spdu, sizeof(spdu), NULL, SK_F_COPY);
840 return 0;
841 }
842
handle_probe_cmd(struct fio_net_cmd * cmd)843 static int handle_probe_cmd(struct fio_net_cmd *cmd)
844 {
845 struct cmd_client_probe_pdu *pdu = (struct cmd_client_probe_pdu *) cmd->payload;
846 struct cmd_probe_reply_pdu probe;
847 uint64_t tag = cmd->tag;
848
849 dprint(FD_NET, "server: sending probe reply\n");
850
851 strcpy(me, (char *) pdu->server);
852
853 memset(&probe, 0, sizeof(probe));
854 gethostname((char *) probe.hostname, sizeof(probe.hostname));
855 #ifdef CONFIG_BIG_ENDIAN
856 probe.bigendian = 1;
857 #endif
858 strncpy((char *) probe.fio_version, fio_version_string, sizeof(probe.fio_version));
859
860 probe.os = FIO_OS;
861 probe.arch = FIO_ARCH;
862 probe.bpp = sizeof(void *);
863 probe.cpus = __cpu_to_le32(cpus_online());
864
865 /*
866 * If the client supports compression and we do too, then enable it
867 */
868 if (has_zlib && le64_to_cpu(pdu->flags) & FIO_PROBE_FLAG_ZLIB) {
869 probe.flags = __cpu_to_le64(FIO_PROBE_FLAG_ZLIB);
870 use_zlib = 1;
871 } else {
872 probe.flags = 0;
873 use_zlib = 0;
874 }
875
876 return fio_net_queue_cmd(FIO_NET_CMD_PROBE, &probe, sizeof(probe), &tag, SK_F_COPY);
877 }
878
handle_send_eta_cmd(struct fio_net_cmd * cmd)879 static int handle_send_eta_cmd(struct fio_net_cmd *cmd)
880 {
881 struct jobs_eta *je;
882 uint64_t tag = cmd->tag;
883 size_t size;
884 int i;
885
886 dprint(FD_NET, "server sending status\n");
887
888 /*
889 * Fake ETA return if we don't have a local one, otherwise the client
890 * will end up timing out waiting for a response to the ETA request
891 */
892 je = get_jobs_eta(true, &size);
893 if (!je) {
894 size = sizeof(*je);
895 je = calloc(1, size);
896 } else {
897 je->nr_running = cpu_to_le32(je->nr_running);
898 je->nr_ramp = cpu_to_le32(je->nr_ramp);
899 je->nr_pending = cpu_to_le32(je->nr_pending);
900 je->nr_setting_up = cpu_to_le32(je->nr_setting_up);
901 je->files_open = cpu_to_le32(je->files_open);
902
903 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
904 je->m_rate[i] = cpu_to_le64(je->m_rate[i]);
905 je->t_rate[i] = cpu_to_le64(je->t_rate[i]);
906 je->m_iops[i] = cpu_to_le32(je->m_iops[i]);
907 je->t_iops[i] = cpu_to_le32(je->t_iops[i]);
908 je->rate[i] = cpu_to_le64(je->rate[i]);
909 je->iops[i] = cpu_to_le32(je->iops[i]);
910 }
911
912 je->elapsed_sec = cpu_to_le64(je->elapsed_sec);
913 je->eta_sec = cpu_to_le64(je->eta_sec);
914 je->nr_threads = cpu_to_le32(je->nr_threads);
915 je->is_pow2 = cpu_to_le32(je->is_pow2);
916 je->unit_base = cpu_to_le32(je->unit_base);
917 }
918
919 fio_net_queue_cmd(FIO_NET_CMD_ETA, je, size, &tag, SK_F_FREE);
920 return 0;
921 }
922
send_update_job_reply(uint64_t __tag,int error)923 static int send_update_job_reply(uint64_t __tag, int error)
924 {
925 uint64_t tag = __tag;
926 uint32_t pdu_error;
927
928 pdu_error = __cpu_to_le32(error);
929 return fio_net_queue_cmd(FIO_NET_CMD_UPDATE_JOB, &pdu_error, sizeof(pdu_error), &tag, SK_F_COPY);
930 }
931
handle_update_job_cmd(struct fio_net_cmd * cmd)932 static int handle_update_job_cmd(struct fio_net_cmd *cmd)
933 {
934 struct cmd_add_job_pdu *pdu = (struct cmd_add_job_pdu *) cmd->payload;
935 struct thread_data *td;
936 uint32_t tnumber;
937
938 tnumber = le32_to_cpu(pdu->thread_number);
939
940 dprint(FD_NET, "server: updating options for job %u\n", tnumber);
941
942 if (!tnumber || tnumber > thread_number) {
943 send_update_job_reply(cmd->tag, ENODEV);
944 return 0;
945 }
946
947 td = &threads[tnumber - 1];
948 convert_thread_options_to_cpu(&td->o, &pdu->top);
949 send_update_job_reply(cmd->tag, 0);
950 return 0;
951 }
952
handle_trigger_cmd(struct fio_net_cmd * cmd)953 static int handle_trigger_cmd(struct fio_net_cmd *cmd)
954 {
955 struct cmd_vtrigger_pdu *pdu = (struct cmd_vtrigger_pdu *) cmd->payload;
956 char *buf = (char *) pdu->cmd;
957 struct all_io_list *rep;
958 size_t sz;
959
960 pdu->len = le16_to_cpu(pdu->len);
961 buf[pdu->len] = '\0';
962
963 rep = get_all_io_list(IO_LIST_ALL, &sz);
964 if (!rep) {
965 struct all_io_list state;
966
967 state.threads = cpu_to_le64((uint64_t) 0);
968 fio_net_queue_cmd(FIO_NET_CMD_VTRIGGER, &state, sizeof(state), NULL, SK_F_COPY | SK_F_INLINE);
969 } else
970 fio_net_queue_cmd(FIO_NET_CMD_VTRIGGER, rep, sz, NULL, SK_F_FREE | SK_F_INLINE);
971
972 exec_trigger(buf);
973 return 0;
974 }
975
handle_command(struct sk_out * sk_out,struct flist_head * job_list,struct fio_net_cmd * cmd)976 static int handle_command(struct sk_out *sk_out, struct flist_head *job_list,
977 struct fio_net_cmd *cmd)
978 {
979 int ret;
980
981 dprint(FD_NET, "server: got op [%s], pdu=%u, tag=%llx\n",
982 fio_server_op(cmd->opcode), cmd->pdu_len,
983 (unsigned long long) cmd->tag);
984
985 switch (cmd->opcode) {
986 case FIO_NET_CMD_QUIT:
987 fio_terminate_threads(TERMINATE_ALL);
988 ret = 0;
989 break;
990 case FIO_NET_CMD_EXIT:
991 exit_backend = 1;
992 return -1;
993 case FIO_NET_CMD_LOAD_FILE:
994 ret = handle_load_file_cmd(cmd);
995 break;
996 case FIO_NET_CMD_JOB:
997 ret = handle_job_cmd(cmd);
998 break;
999 case FIO_NET_CMD_JOBLINE:
1000 ret = handle_jobline_cmd(cmd);
1001 break;
1002 case FIO_NET_CMD_PROBE:
1003 ret = handle_probe_cmd(cmd);
1004 break;
1005 case FIO_NET_CMD_SEND_ETA:
1006 ret = handle_send_eta_cmd(cmd);
1007 break;
1008 case FIO_NET_CMD_RUN:
1009 ret = handle_run_cmd(sk_out, job_list, cmd);
1010 break;
1011 case FIO_NET_CMD_UPDATE_JOB:
1012 ret = handle_update_job_cmd(cmd);
1013 break;
1014 case FIO_NET_CMD_VTRIGGER:
1015 ret = handle_trigger_cmd(cmd);
1016 break;
1017 case FIO_NET_CMD_SENDFILE: {
1018 struct cmd_sendfile_reply *in;
1019 struct cmd_reply *rep;
1020
1021 rep = (struct cmd_reply *) (uintptr_t) cmd->tag;
1022
1023 in = (struct cmd_sendfile_reply *) cmd->payload;
1024 in->size = le32_to_cpu(in->size);
1025 in->error = le32_to_cpu(in->error);
1026 if (in->error) {
1027 ret = 1;
1028 rep->error = in->error;
1029 } else {
1030 ret = 0;
1031 rep->data = smalloc(in->size);
1032 if (!rep->data) {
1033 ret = 1;
1034 rep->error = ENOMEM;
1035 } else {
1036 rep->size = in->size;
1037 memcpy(rep->data, in->data, in->size);
1038 }
1039 }
1040 fio_mutex_up(&rep->lock);
1041 break;
1042 }
1043 default:
1044 log_err("fio: unknown opcode: %s\n", fio_server_op(cmd->opcode));
1045 ret = 1;
1046 }
1047
1048 return ret;
1049 }
1050
1051 /*
1052 * Send a command with a separate PDU, not inlined in the command
1053 */
fio_send_cmd_ext_pdu(int sk,uint16_t opcode,const void * buf,off_t size,uint64_t tag,uint32_t flags)1054 static int fio_send_cmd_ext_pdu(int sk, uint16_t opcode, const void *buf,
1055 off_t size, uint64_t tag, uint32_t flags)
1056 {
1057 struct fio_net_cmd cmd;
1058 struct iovec iov[2];
1059 size_t this_len;
1060 int ret;
1061
1062 iov[0].iov_base = (void *) &cmd;
1063 iov[0].iov_len = sizeof(cmd);
1064
1065 do {
1066 uint32_t this_flags = flags;
1067
1068 this_len = size;
1069 if (this_len > FIO_SERVER_MAX_FRAGMENT_PDU)
1070 this_len = FIO_SERVER_MAX_FRAGMENT_PDU;
1071
1072 if (this_len < size)
1073 this_flags |= FIO_NET_CMD_F_MORE;
1074
1075 __fio_init_net_cmd(&cmd, opcode, this_len, tag);
1076 cmd.flags = __cpu_to_le32(this_flags);
1077 fio_net_cmd_crc_pdu(&cmd, buf);
1078
1079 iov[1].iov_base = (void *) buf;
1080 iov[1].iov_len = this_len;
1081
1082 ret = fio_sendv_data(sk, iov, 2);
1083 size -= this_len;
1084 buf += this_len;
1085 } while (!ret && size);
1086
1087 return ret;
1088 }
1089
finish_entry(struct sk_entry * entry)1090 static void finish_entry(struct sk_entry *entry)
1091 {
1092 if (entry->flags & SK_F_FREE)
1093 free(entry->buf);
1094 else if (entry->flags & SK_F_COPY)
1095 sfree(entry->buf);
1096
1097 sfree(entry);
1098 }
1099
entry_set_flags(struct sk_entry * entry,struct flist_head * list,unsigned int * flags)1100 static void entry_set_flags(struct sk_entry *entry, struct flist_head *list,
1101 unsigned int *flags)
1102 {
1103 if (!flist_empty(list))
1104 *flags = FIO_NET_CMD_F_MORE;
1105 else
1106 *flags = 0;
1107 }
1108
send_vec_entry(struct sk_out * sk_out,struct sk_entry * first)1109 static int send_vec_entry(struct sk_out *sk_out, struct sk_entry *first)
1110 {
1111 unsigned int flags;
1112 int ret;
1113
1114 entry_set_flags(first, &first->next, &flags);
1115
1116 ret = fio_send_cmd_ext_pdu(sk_out->sk, first->opcode, first->buf,
1117 first->size, first->tag, flags);
1118
1119 while (!flist_empty(&first->next)) {
1120 struct sk_entry *next;
1121
1122 next = flist_first_entry(&first->next, struct sk_entry, list);
1123 flist_del_init(&next->list);
1124
1125 entry_set_flags(next, &first->next, &flags);
1126
1127 ret += fio_send_cmd_ext_pdu(sk_out->sk, next->opcode, next->buf,
1128 next->size, next->tag, flags);
1129 finish_entry(next);
1130 }
1131
1132 return ret;
1133 }
1134
handle_sk_entry(struct sk_out * sk_out,struct sk_entry * entry)1135 static int handle_sk_entry(struct sk_out *sk_out, struct sk_entry *entry)
1136 {
1137 int ret;
1138
1139 fio_mutex_down(&sk_out->xmit);
1140
1141 if (entry->flags & SK_F_VEC)
1142 ret = send_vec_entry(sk_out, entry);
1143 else if (entry->flags & SK_F_SIMPLE) {
1144 ret = fio_net_send_simple_cmd(sk_out->sk, entry->opcode,
1145 entry->tag, NULL);
1146 } else {
1147 ret = fio_net_send_cmd(sk_out->sk, entry->opcode, entry->buf,
1148 entry->size, &entry->tag, NULL);
1149 }
1150
1151 fio_mutex_up(&sk_out->xmit);
1152
1153 if (ret)
1154 log_err("fio: failed handling cmd %s\n", fio_server_op(entry->opcode));
1155
1156 finish_entry(entry);
1157 return ret;
1158 }
1159
handle_xmits(struct sk_out * sk_out)1160 static int handle_xmits(struct sk_out *sk_out)
1161 {
1162 struct sk_entry *entry;
1163 FLIST_HEAD(list);
1164 int ret = 0;
1165
1166 sk_lock(sk_out);
1167 if (flist_empty(&sk_out->list)) {
1168 sk_unlock(sk_out);
1169 return 0;
1170 }
1171
1172 flist_splice_init(&sk_out->list, &list);
1173 sk_unlock(sk_out);
1174
1175 while (!flist_empty(&list)) {
1176 entry = flist_entry(list.next, struct sk_entry, list);
1177 flist_del(&entry->list);
1178 ret += handle_sk_entry(sk_out, entry);
1179 }
1180
1181 return ret;
1182 }
1183
handle_connection(struct sk_out * sk_out)1184 static int handle_connection(struct sk_out *sk_out)
1185 {
1186 struct fio_net_cmd *cmd = NULL;
1187 FLIST_HEAD(job_list);
1188 int ret = 0;
1189
1190 reset_fio_state();
1191
1192 /* read forever */
1193 while (!exit_backend) {
1194 struct pollfd pfd = {
1195 .fd = sk_out->sk,
1196 .events = POLLIN,
1197 };
1198
1199 ret = 0;
1200 do {
1201 int timeout = 1000;
1202
1203 if (!flist_empty(&job_list))
1204 timeout = 100;
1205
1206 handle_xmits(sk_out);
1207
1208 ret = poll(&pfd, 1, 0);
1209 if (ret < 0) {
1210 if (errno == EINTR)
1211 break;
1212 log_err("fio: poll: %s\n", strerror(errno));
1213 break;
1214 } else if (!ret) {
1215 fio_server_check_jobs(&job_list);
1216 fio_mutex_down_timeout(&sk_out->wait, timeout);
1217 continue;
1218 }
1219
1220 if (pfd.revents & POLLIN)
1221 break;
1222 if (pfd.revents & (POLLERR|POLLHUP)) {
1223 ret = 1;
1224 break;
1225 }
1226 } while (!exit_backend);
1227
1228 fio_server_check_jobs(&job_list);
1229
1230 if (ret < 0)
1231 break;
1232
1233 cmd = fio_net_recv_cmd(sk_out->sk, true);
1234 if (!cmd) {
1235 ret = -1;
1236 break;
1237 }
1238
1239 ret = handle_command(sk_out, &job_list, cmd);
1240 if (ret)
1241 break;
1242
1243 free(cmd);
1244 cmd = NULL;
1245 }
1246
1247 if (cmd)
1248 free(cmd);
1249
1250 handle_xmits(sk_out);
1251
1252 close(sk_out->sk);
1253 sk_out->sk = -1;
1254 __sk_out_drop(sk_out);
1255 _exit(ret);
1256 }
1257
1258 /* get the address on this host bound by the input socket,
1259 * whether it is ipv6 or ipv4 */
1260
get_my_addr_str(int sk)1261 static int get_my_addr_str(int sk)
1262 {
1263 struct sockaddr_in6 myaddr6 = { 0, };
1264 struct sockaddr_in myaddr4 = { 0, };
1265 struct sockaddr *sockaddr_p;
1266 char *net_addr;
1267 socklen_t len;
1268 int ret;
1269
1270 if (use_ipv6) {
1271 len = sizeof(myaddr6);
1272 sockaddr_p = (struct sockaddr * )&myaddr6;
1273 net_addr = (char * )&myaddr6.sin6_addr;
1274 } else {
1275 len = sizeof(myaddr4);
1276 sockaddr_p = (struct sockaddr * )&myaddr4;
1277 net_addr = (char * )&myaddr4.sin_addr;
1278 }
1279
1280 ret = getsockname(sk, sockaddr_p, &len);
1281 if (ret) {
1282 log_err("fio: getsockaddr: %s\n", strerror(errno));
1283 return -1;
1284 }
1285
1286 if (!inet_ntop(use_ipv6?AF_INET6:AF_INET, net_addr, client_sockaddr_str, INET6_ADDRSTRLEN - 1)) {
1287 log_err("inet_ntop: failed to convert addr to string\n");
1288 return -1;
1289 }
1290
1291 dprint(FD_NET, "fio server bound to addr %s\n", client_sockaddr_str);
1292 return 0;
1293 }
1294
accept_loop(int listen_sk)1295 static int accept_loop(int listen_sk)
1296 {
1297 struct sockaddr_in addr;
1298 struct sockaddr_in6 addr6;
1299 socklen_t len = use_ipv6 ? sizeof(addr6) : sizeof(addr);
1300 struct pollfd pfd;
1301 int ret = 0, sk, exitval = 0;
1302 FLIST_HEAD(conn_list);
1303
1304 dprint(FD_NET, "server enter accept loop\n");
1305
1306 fio_set_fd_nonblocking(listen_sk, "server");
1307
1308 while (!exit_backend) {
1309 struct sk_out *sk_out;
1310 const char *from;
1311 char buf[64];
1312 pid_t pid;
1313
1314 pfd.fd = listen_sk;
1315 pfd.events = POLLIN;
1316 do {
1317 int timeout = 1000;
1318
1319 if (!flist_empty(&conn_list))
1320 timeout = 100;
1321
1322 ret = poll(&pfd, 1, timeout);
1323 if (ret < 0) {
1324 if (errno == EINTR)
1325 break;
1326 log_err("fio: poll: %s\n", strerror(errno));
1327 break;
1328 } else if (!ret) {
1329 fio_server_check_conns(&conn_list);
1330 continue;
1331 }
1332
1333 if (pfd.revents & POLLIN)
1334 break;
1335 } while (!exit_backend);
1336
1337 fio_server_check_conns(&conn_list);
1338
1339 if (exit_backend || ret < 0)
1340 break;
1341
1342 if (use_ipv6)
1343 sk = accept(listen_sk, (struct sockaddr *) &addr6, &len);
1344 else
1345 sk = accept(listen_sk, (struct sockaddr *) &addr, &len);
1346
1347 if (sk < 0) {
1348 log_err("fio: accept: %s\n", strerror(errno));
1349 return -1;
1350 }
1351
1352 if (use_ipv6)
1353 from = inet_ntop(AF_INET6, (struct sockaddr *) &addr6.sin6_addr, buf, sizeof(buf));
1354 else
1355 from = inet_ntop(AF_INET, (struct sockaddr *) &addr.sin_addr, buf, sizeof(buf));
1356
1357 dprint(FD_NET, "server: connect from %s\n", from);
1358
1359 sk_out = smalloc(sizeof(*sk_out));
1360 sk_out->sk = sk;
1361 INIT_FLIST_HEAD(&sk_out->list);
1362 __fio_mutex_init(&sk_out->lock, FIO_MUTEX_UNLOCKED);
1363 __fio_mutex_init(&sk_out->wait, FIO_MUTEX_LOCKED);
1364 __fio_mutex_init(&sk_out->xmit, FIO_MUTEX_UNLOCKED);
1365
1366 pid = fork();
1367 if (pid) {
1368 close(sk);
1369 fio_server_add_conn_pid(&conn_list, pid);
1370 continue;
1371 }
1372
1373 /* if error, it's already logged, non-fatal */
1374 get_my_addr_str(sk);
1375
1376 /*
1377 * Assign sk_out here, it'll be dropped in handle_connection()
1378 * since that function calls _exit() when done
1379 */
1380 sk_out_assign(sk_out);
1381 handle_connection(sk_out);
1382 }
1383
1384 return exitval;
1385 }
1386
fio_server_text_output(int level,const char * buf,size_t len)1387 int fio_server_text_output(int level, const char *buf, size_t len)
1388 {
1389 struct sk_out *sk_out = pthread_getspecific(sk_out_key);
1390 struct cmd_text_pdu *pdu;
1391 unsigned int tlen;
1392 struct timeval tv;
1393
1394 if (!sk_out || sk_out->sk == -1)
1395 return -1;
1396
1397 tlen = sizeof(*pdu) + len;
1398 pdu = malloc(tlen);
1399
1400 pdu->level = __cpu_to_le32(level);
1401 pdu->buf_len = __cpu_to_le32(len);
1402
1403 gettimeofday(&tv, NULL);
1404 pdu->log_sec = __cpu_to_le64(tv.tv_sec);
1405 pdu->log_usec = __cpu_to_le64(tv.tv_usec);
1406
1407 memcpy(pdu->buf, buf, len);
1408
1409 fio_net_queue_cmd(FIO_NET_CMD_TEXT, pdu, tlen, NULL, SK_F_COPY);
1410 free(pdu);
1411 return len;
1412 }
1413
convert_io_stat(struct io_stat * dst,struct io_stat * src)1414 static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
1415 {
1416 dst->max_val = cpu_to_le64(src->max_val);
1417 dst->min_val = cpu_to_le64(src->min_val);
1418 dst->samples = cpu_to_le64(src->samples);
1419
1420 /*
1421 * Encode to IEEE 754 for network transfer
1422 */
1423 dst->mean.u.i = cpu_to_le64(fio_double_to_uint64(src->mean.u.f));
1424 dst->S.u.i = cpu_to_le64(fio_double_to_uint64(src->S.u.f));
1425 }
1426
convert_gs(struct group_run_stats * dst,struct group_run_stats * src)1427 static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
1428 {
1429 int i;
1430
1431 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1432 dst->max_run[i] = cpu_to_le64(src->max_run[i]);
1433 dst->min_run[i] = cpu_to_le64(src->min_run[i]);
1434 dst->max_bw[i] = cpu_to_le64(src->max_bw[i]);
1435 dst->min_bw[i] = cpu_to_le64(src->min_bw[i]);
1436 dst->iobytes[i] = cpu_to_le64(src->iobytes[i]);
1437 dst->agg[i] = cpu_to_le64(src->agg[i]);
1438 }
1439
1440 dst->kb_base = cpu_to_le32(src->kb_base);
1441 dst->unit_base = cpu_to_le32(src->unit_base);
1442 dst->groupid = cpu_to_le32(src->groupid);
1443 dst->unified_rw_rep = cpu_to_le32(src->unified_rw_rep);
1444 }
1445
1446 /*
1447 * Send a CMD_TS, which packs struct thread_stat and group_run_stats
1448 * into a single payload.
1449 */
fio_server_send_ts(struct thread_stat * ts,struct group_run_stats * rs)1450 void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs)
1451 {
1452 struct cmd_ts_pdu p;
1453 int i, j;
1454 void *ss_buf;
1455 uint64_t *ss_iops, *ss_bw;
1456
1457 dprint(FD_NET, "server sending end stats\n");
1458
1459 memset(&p, 0, sizeof(p));
1460
1461 strncpy(p.ts.name, ts->name, FIO_JOBNAME_SIZE - 1);
1462 strncpy(p.ts.verror, ts->verror, FIO_VERROR_SIZE - 1);
1463 strncpy(p.ts.description, ts->description, FIO_JOBDESC_SIZE - 1);
1464
1465 p.ts.error = cpu_to_le32(ts->error);
1466 p.ts.thread_number = cpu_to_le32(ts->thread_number);
1467 p.ts.groupid = cpu_to_le32(ts->groupid);
1468 p.ts.pid = cpu_to_le32(ts->pid);
1469 p.ts.members = cpu_to_le32(ts->members);
1470 p.ts.unified_rw_rep = cpu_to_le32(ts->unified_rw_rep);
1471
1472 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1473 convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]);
1474 convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]);
1475 convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]);
1476 convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]);
1477 }
1478
1479 p.ts.usr_time = cpu_to_le64(ts->usr_time);
1480 p.ts.sys_time = cpu_to_le64(ts->sys_time);
1481 p.ts.ctx = cpu_to_le64(ts->ctx);
1482 p.ts.minf = cpu_to_le64(ts->minf);
1483 p.ts.majf = cpu_to_le64(ts->majf);
1484 p.ts.clat_percentiles = cpu_to_le64(ts->clat_percentiles);
1485 p.ts.percentile_precision = cpu_to_le64(ts->percentile_precision);
1486
1487 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
1488 fio_fp64_t *src = &ts->percentile_list[i];
1489 fio_fp64_t *dst = &p.ts.percentile_list[i];
1490
1491 dst->u.i = cpu_to_le64(fio_double_to_uint64(src->u.f));
1492 }
1493
1494 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
1495 p.ts.io_u_map[i] = cpu_to_le32(ts->io_u_map[i]);
1496 p.ts.io_u_submit[i] = cpu_to_le32(ts->io_u_submit[i]);
1497 p.ts.io_u_complete[i] = cpu_to_le32(ts->io_u_complete[i]);
1498 }
1499
1500 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++)
1501 p.ts.io_u_lat_u[i] = cpu_to_le32(ts->io_u_lat_u[i]);
1502 for (i = 0; i < FIO_IO_U_LAT_M_NR; i++)
1503 p.ts.io_u_lat_m[i] = cpu_to_le32(ts->io_u_lat_m[i]);
1504
1505 for (i = 0; i < DDIR_RWDIR_CNT; i++)
1506 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
1507 p.ts.io_u_plat[i][j] = cpu_to_le32(ts->io_u_plat[i][j]);
1508
1509 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1510 p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]);
1511 p.ts.short_io_u[i] = cpu_to_le64(ts->short_io_u[i]);
1512 p.ts.drop_io_u[i] = cpu_to_le64(ts->drop_io_u[i]);
1513 }
1514
1515 p.ts.total_submit = cpu_to_le64(ts->total_submit);
1516 p.ts.total_complete = cpu_to_le64(ts->total_complete);
1517
1518 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1519 p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]);
1520 p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]);
1521 }
1522
1523 p.ts.total_run_time = cpu_to_le64(ts->total_run_time);
1524 p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error);
1525 p.ts.total_err_count = cpu_to_le64(ts->total_err_count);
1526 p.ts.first_error = cpu_to_le32(ts->first_error);
1527 p.ts.kb_base = cpu_to_le32(ts->kb_base);
1528 p.ts.unit_base = cpu_to_le32(ts->unit_base);
1529
1530 p.ts.latency_depth = cpu_to_le32(ts->latency_depth);
1531 p.ts.latency_target = cpu_to_le64(ts->latency_target);
1532 p.ts.latency_window = cpu_to_le64(ts->latency_window);
1533 p.ts.latency_percentile.u.i = cpu_to_le64(fio_double_to_uint64(ts->latency_percentile.u.f));
1534
1535 p.ts.nr_block_infos = cpu_to_le64(ts->nr_block_infos);
1536 for (i = 0; i < p.ts.nr_block_infos; i++)
1537 p.ts.block_infos[i] = cpu_to_le32(ts->block_infos[i]);
1538
1539 p.ts.ss_dur = cpu_to_le64(ts->ss_dur);
1540 p.ts.ss_state = cpu_to_le32(ts->ss_state);
1541 p.ts.ss_head = cpu_to_le32(ts->ss_head);
1542 p.ts.ss_limit.u.i = cpu_to_le64(fio_double_to_uint64(ts->ss_limit.u.f));
1543 p.ts.ss_slope.u.i = cpu_to_le64(fio_double_to_uint64(ts->ss_slope.u.f));
1544 p.ts.ss_deviation.u.i = cpu_to_le64(fio_double_to_uint64(ts->ss_deviation.u.f));
1545 p.ts.ss_criterion.u.i = cpu_to_le64(fio_double_to_uint64(ts->ss_criterion.u.f));
1546
1547 convert_gs(&p.rs, rs);
1548
1549 dprint(FD_NET, "ts->ss_state = %d\n", ts->ss_state);
1550 if (ts->ss_state & __FIO_SS_DATA) {
1551 dprint(FD_NET, "server sending steadystate ring buffers\n");
1552
1553 ss_buf = malloc(sizeof(p) + 2*ts->ss_dur*sizeof(uint64_t));
1554
1555 memcpy(ss_buf, &p, sizeof(p));
1556
1557 ss_iops = (uint64_t *) ((struct cmd_ts_pdu *)ss_buf + 1);
1558 ss_bw = ss_iops + (int) ts->ss_dur;
1559 for (i = 0; i < ts->ss_dur; i++) {
1560 ss_iops[i] = cpu_to_le64(ts->ss_iops_data[i]);
1561 ss_bw[i] = cpu_to_le64(ts->ss_bw_data[i]);
1562 }
1563
1564 fio_net_queue_cmd(FIO_NET_CMD_TS, ss_buf, sizeof(p) + 2*ts->ss_dur*sizeof(uint64_t), NULL, SK_F_COPY);
1565
1566 free(ss_buf);
1567 }
1568 else
1569 fio_net_queue_cmd(FIO_NET_CMD_TS, &p, sizeof(p), NULL, SK_F_COPY);
1570 }
1571
fio_server_send_gs(struct group_run_stats * rs)1572 void fio_server_send_gs(struct group_run_stats *rs)
1573 {
1574 struct group_run_stats gs;
1575
1576 dprint(FD_NET, "server sending group run stats\n");
1577
1578 convert_gs(&gs, rs);
1579 fio_net_queue_cmd(FIO_NET_CMD_GS, &gs, sizeof(gs), NULL, SK_F_COPY);
1580 }
1581
fio_server_send_job_options(struct flist_head * opt_list,unsigned int groupid)1582 void fio_server_send_job_options(struct flist_head *opt_list,
1583 unsigned int groupid)
1584 {
1585 struct cmd_job_option pdu;
1586 struct flist_head *entry;
1587
1588 if (flist_empty(opt_list))
1589 return;
1590
1591 flist_for_each(entry, opt_list) {
1592 struct print_option *p;
1593 size_t len;
1594
1595 p = flist_entry(entry, struct print_option, list);
1596 memset(&pdu, 0, sizeof(pdu));
1597
1598 if (groupid == -1U) {
1599 pdu.global = __cpu_to_le16(1);
1600 pdu.groupid = 0;
1601 } else {
1602 pdu.global = 0;
1603 pdu.groupid = cpu_to_le32(groupid);
1604 }
1605 len = strlen(p->name);
1606 if (len >= sizeof(pdu.name)) {
1607 len = sizeof(pdu.name) - 1;
1608 pdu.truncated = __cpu_to_le16(1);
1609 }
1610 memcpy(pdu.name, p->name, len);
1611 if (p->value) {
1612 len = strlen(p->value);
1613 if (len >= sizeof(pdu.value)) {
1614 len = sizeof(pdu.value) - 1;
1615 pdu.truncated = __cpu_to_le16(1);
1616 }
1617 memcpy(pdu.value, p->value, len);
1618 }
1619 fio_net_queue_cmd(FIO_NET_CMD_JOB_OPT, &pdu, sizeof(pdu), NULL, SK_F_COPY);
1620 }
1621 }
1622
convert_agg(struct disk_util_agg * dst,struct disk_util_agg * src)1623 static void convert_agg(struct disk_util_agg *dst, struct disk_util_agg *src)
1624 {
1625 int i;
1626
1627 for (i = 0; i < 2; i++) {
1628 dst->ios[i] = cpu_to_le64(src->ios[i]);
1629 dst->merges[i] = cpu_to_le64(src->merges[i]);
1630 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
1631 dst->ticks[i] = cpu_to_le64(src->ticks[i]);
1632 }
1633
1634 dst->io_ticks = cpu_to_le64(src->io_ticks);
1635 dst->time_in_queue = cpu_to_le64(src->time_in_queue);
1636 dst->slavecount = cpu_to_le32(src->slavecount);
1637 dst->max_util.u.i = cpu_to_le64(fio_double_to_uint64(src->max_util.u.f));
1638 }
1639
convert_dus(struct disk_util_stat * dst,struct disk_util_stat * src)1640 static void convert_dus(struct disk_util_stat *dst, struct disk_util_stat *src)
1641 {
1642 int i;
1643
1644 dst->name[FIO_DU_NAME_SZ - 1] = '\0';
1645 strncpy((char *) dst->name, (char *) src->name, FIO_DU_NAME_SZ - 1);
1646
1647 for (i = 0; i < 2; i++) {
1648 dst->s.ios[i] = cpu_to_le64(src->s.ios[i]);
1649 dst->s.merges[i] = cpu_to_le64(src->s.merges[i]);
1650 dst->s.sectors[i] = cpu_to_le64(src->s.sectors[i]);
1651 dst->s.ticks[i] = cpu_to_le64(src->s.ticks[i]);
1652 }
1653
1654 dst->s.io_ticks = cpu_to_le64(src->s.io_ticks);
1655 dst->s.time_in_queue = cpu_to_le64(src->s.time_in_queue);
1656 dst->s.msec = cpu_to_le64(src->s.msec);
1657 }
1658
fio_server_send_du(void)1659 void fio_server_send_du(void)
1660 {
1661 struct disk_util *du;
1662 struct flist_head *entry;
1663 struct cmd_du_pdu pdu;
1664
1665 dprint(FD_NET, "server: sending disk_util %d\n", !flist_empty(&disk_list));
1666
1667 memset(&pdu, 0, sizeof(pdu));
1668
1669 flist_for_each(entry, &disk_list) {
1670 du = flist_entry(entry, struct disk_util, list);
1671
1672 convert_dus(&pdu.dus, &du->dus);
1673 convert_agg(&pdu.agg, &du->agg);
1674
1675 fio_net_queue_cmd(FIO_NET_CMD_DU, &pdu, sizeof(pdu), NULL, SK_F_COPY);
1676 }
1677 }
1678
1679 #ifdef CONFIG_ZLIB
1680
__fio_net_prep_tail(z_stream * stream,void * out_pdu,struct sk_entry ** last_entry,struct sk_entry * first)1681 static inline void __fio_net_prep_tail(z_stream *stream, void *out_pdu,
1682 struct sk_entry **last_entry,
1683 struct sk_entry *first)
1684 {
1685 unsigned int this_len = FIO_SERVER_MAX_FRAGMENT_PDU - stream->avail_out;
1686
1687 *last_entry = fio_net_prep_cmd(FIO_NET_CMD_IOLOG, out_pdu, this_len,
1688 NULL, SK_F_VEC | SK_F_INLINE | SK_F_FREE);
1689 flist_add_tail(&(*last_entry)->list, &first->next);
1690
1691 }
1692
1693 /*
1694 * Deflates the next input given, creating as many new packets in the
1695 * linked list as necessary.
1696 */
__deflate_pdu_buffer(void * next_in,unsigned int next_sz,void ** out_pdu,struct sk_entry ** last_entry,z_stream * stream,struct sk_entry * first)1697 static int __deflate_pdu_buffer(void *next_in, unsigned int next_sz, void **out_pdu,
1698 struct sk_entry **last_entry, z_stream *stream,
1699 struct sk_entry *first)
1700 {
1701 int ret;
1702
1703 stream->next_in = next_in;
1704 stream->avail_in = next_sz;
1705 do {
1706 if (! stream->avail_out) {
1707
1708 __fio_net_prep_tail(stream, *out_pdu, last_entry, first);
1709
1710 *out_pdu = malloc(FIO_SERVER_MAX_FRAGMENT_PDU);
1711
1712 stream->avail_out = FIO_SERVER_MAX_FRAGMENT_PDU;
1713 stream->next_out = *out_pdu;
1714 }
1715
1716 ret = deflate(stream, Z_BLOCK);
1717
1718 if (ret < 0) {
1719 free(*out_pdu);
1720 return 1;
1721 }
1722 } while (stream->avail_in);
1723
1724 return 0;
1725 }
1726
__fio_append_iolog_gz_hist(struct sk_entry * first,struct io_log * log,struct io_logs * cur_log,z_stream * stream)1727 static int __fio_append_iolog_gz_hist(struct sk_entry *first, struct io_log *log,
1728 struct io_logs *cur_log, z_stream *stream)
1729 {
1730 struct sk_entry *entry;
1731 void *out_pdu;
1732 int ret, i, j;
1733 int sample_sz = log_entry_sz(log);
1734
1735 out_pdu = malloc(FIO_SERVER_MAX_FRAGMENT_PDU);
1736 stream->avail_out = FIO_SERVER_MAX_FRAGMENT_PDU;
1737 stream->next_out = out_pdu;
1738
1739 for (i = 0; i < cur_log->nr_samples; i++) {
1740 struct io_sample *s;
1741 struct io_u_plat_entry *cur_plat_entry, *prev_plat_entry;
1742 unsigned int *cur_plat, *prev_plat;
1743
1744 s = get_sample(log, cur_log, i);
1745 ret = __deflate_pdu_buffer(s, sample_sz, &out_pdu, &entry, stream, first);
1746 if (ret)
1747 return ret;
1748
1749 /* Do the subtraction on server side so that client doesn't have to
1750 * reconstruct our linked list from packets.
1751 */
1752 cur_plat_entry = s->data.plat_entry;
1753 prev_plat_entry = flist_first_entry(&cur_plat_entry->list, struct io_u_plat_entry, list);
1754 cur_plat = cur_plat_entry->io_u_plat;
1755 prev_plat = prev_plat_entry->io_u_plat;
1756
1757 for (j = 0; j < FIO_IO_U_PLAT_NR; j++) {
1758 cur_plat[j] -= prev_plat[j];
1759 }
1760
1761 flist_del(&prev_plat_entry->list);
1762 free(prev_plat_entry);
1763
1764 ret = __deflate_pdu_buffer(cur_plat_entry, sizeof(*cur_plat_entry),
1765 &out_pdu, &entry, stream, first);
1766
1767 if (ret)
1768 return ret;
1769 }
1770
1771 __fio_net_prep_tail(stream, out_pdu, &entry, first);
1772
1773 return 0;
1774 }
1775
__fio_append_iolog_gz(struct sk_entry * first,struct io_log * log,struct io_logs * cur_log,z_stream * stream)1776 static int __fio_append_iolog_gz(struct sk_entry *first, struct io_log *log,
1777 struct io_logs *cur_log, z_stream *stream)
1778 {
1779 unsigned int this_len;
1780 void *out_pdu;
1781 int ret;
1782
1783 if (log->log_type == IO_LOG_TYPE_HIST)
1784 return __fio_append_iolog_gz_hist(first, log, cur_log, stream);
1785
1786 stream->next_in = (void *) cur_log->log;
1787 stream->avail_in = cur_log->nr_samples * log_entry_sz(log);
1788
1789 do {
1790 struct sk_entry *entry;
1791
1792 /*
1793 * Dirty - since the log is potentially huge, compress it into
1794 * FIO_SERVER_MAX_FRAGMENT_PDU chunks and let the receiving
1795 * side defragment it.
1796 */
1797 out_pdu = malloc(FIO_SERVER_MAX_FRAGMENT_PDU);
1798
1799 stream->avail_out = FIO_SERVER_MAX_FRAGMENT_PDU;
1800 stream->next_out = out_pdu;
1801 ret = deflate(stream, Z_BLOCK);
1802 /* may be Z_OK, or Z_STREAM_END */
1803 if (ret < 0) {
1804 free(out_pdu);
1805 return 1;
1806 }
1807
1808 this_len = FIO_SERVER_MAX_FRAGMENT_PDU - stream->avail_out;
1809
1810 entry = fio_net_prep_cmd(FIO_NET_CMD_IOLOG, out_pdu, this_len,
1811 NULL, SK_F_VEC | SK_F_INLINE | SK_F_FREE);
1812 flist_add_tail(&entry->list, &first->next);
1813 } while (stream->avail_in);
1814
1815 return 0;
1816 }
1817
fio_append_iolog_gz(struct sk_entry * first,struct io_log * log)1818 static int fio_append_iolog_gz(struct sk_entry *first, struct io_log *log)
1819 {
1820 int ret = 0;
1821 z_stream stream;
1822
1823 memset(&stream, 0, sizeof(stream));
1824 stream.zalloc = Z_NULL;
1825 stream.zfree = Z_NULL;
1826 stream.opaque = Z_NULL;
1827
1828 if (deflateInit(&stream, Z_DEFAULT_COMPRESSION) != Z_OK)
1829 return 1;
1830
1831 while (!flist_empty(&log->io_logs)) {
1832 struct io_logs *cur_log;
1833
1834 cur_log = flist_first_entry(&log->io_logs, struct io_logs, list);
1835 flist_del_init(&cur_log->list);
1836
1837 ret = __fio_append_iolog_gz(first, log, cur_log, &stream);
1838 if (ret)
1839 break;
1840 }
1841
1842 ret = deflate(&stream, Z_FINISH);
1843
1844 while (ret != Z_STREAM_END) {
1845 struct sk_entry *entry;
1846 unsigned int this_len;
1847 void *out_pdu;
1848
1849 out_pdu = malloc(FIO_SERVER_MAX_FRAGMENT_PDU);
1850 stream.avail_out = FIO_SERVER_MAX_FRAGMENT_PDU;
1851 stream.next_out = out_pdu;
1852
1853 ret = deflate(&stream, Z_FINISH);
1854 /* may be Z_OK, or Z_STREAM_END */
1855 if (ret < 0) {
1856 free(out_pdu);
1857 break;
1858 }
1859
1860 this_len = FIO_SERVER_MAX_FRAGMENT_PDU - stream.avail_out;
1861
1862 entry = fio_net_prep_cmd(FIO_NET_CMD_IOLOG, out_pdu, this_len,
1863 NULL, SK_F_VEC | SK_F_INLINE | SK_F_FREE);
1864 flist_add_tail(&entry->list, &first->next);
1865 } while (ret != Z_STREAM_END);
1866
1867 ret = deflateEnd(&stream);
1868 if (ret == Z_OK)
1869 return 0;
1870
1871 return 1;
1872 }
1873 #else
fio_append_iolog_gz(struct sk_entry * first,struct io_log * log)1874 static int fio_append_iolog_gz(struct sk_entry *first, struct io_log *log)
1875 {
1876 return 1;
1877 }
1878 #endif
1879
fio_append_gz_chunks(struct sk_entry * first,struct io_log * log)1880 static int fio_append_gz_chunks(struct sk_entry *first, struct io_log *log)
1881 {
1882 struct sk_entry *entry;
1883 struct flist_head *node;
1884
1885 pthread_mutex_lock(&log->chunk_lock);
1886 flist_for_each(node, &log->chunk_list) {
1887 struct iolog_compress *c;
1888
1889 c = flist_entry(node, struct iolog_compress, list);
1890 entry = fio_net_prep_cmd(FIO_NET_CMD_IOLOG, c->buf, c->len,
1891 NULL, SK_F_VEC | SK_F_INLINE);
1892 flist_add_tail(&entry->list, &first->next);
1893 }
1894 pthread_mutex_unlock(&log->chunk_lock);
1895
1896 return 0;
1897 }
1898
fio_append_text_log(struct sk_entry * first,struct io_log * log)1899 static int fio_append_text_log(struct sk_entry *first, struct io_log *log)
1900 {
1901 struct sk_entry *entry;
1902
1903 while (!flist_empty(&log->io_logs)) {
1904 struct io_logs *cur_log;
1905 size_t size;
1906
1907 cur_log = flist_first_entry(&log->io_logs, struct io_logs, list);
1908 flist_del_init(&cur_log->list);
1909
1910 size = cur_log->nr_samples * log_entry_sz(log);
1911
1912 entry = fio_net_prep_cmd(FIO_NET_CMD_IOLOG, cur_log->log, size,
1913 NULL, SK_F_VEC | SK_F_INLINE);
1914 flist_add_tail(&entry->list, &first->next);
1915 }
1916
1917 return 0;
1918 }
1919
fio_send_iolog(struct thread_data * td,struct io_log * log,const char * name)1920 int fio_send_iolog(struct thread_data *td, struct io_log *log, const char *name)
1921 {
1922 struct cmd_iolog_pdu pdu;
1923 struct sk_entry *first;
1924 struct flist_head *entry;
1925 int ret = 0;
1926
1927 pdu.nr_samples = cpu_to_le64(iolog_nr_samples(log));
1928 pdu.thread_number = cpu_to_le32(td->thread_number);
1929 pdu.log_type = cpu_to_le32(log->log_type);
1930 pdu.log_hist_coarseness = cpu_to_le32(log->hist_coarseness);
1931
1932 if (!flist_empty(&log->chunk_list))
1933 pdu.compressed = __cpu_to_le32(STORE_COMPRESSED);
1934 else if (use_zlib)
1935 pdu.compressed = __cpu_to_le32(XMIT_COMPRESSED);
1936 else
1937 pdu.compressed = 0;
1938
1939 strncpy((char *) pdu.name, name, FIO_NET_NAME_MAX);
1940 pdu.name[FIO_NET_NAME_MAX - 1] = '\0';
1941
1942 /*
1943 * We can't do this for a pre-compressed log, but for that case,
1944 * log->nr_samples is zero anyway.
1945 */
1946 flist_for_each(entry, &log->io_logs) {
1947 struct io_logs *cur_log;
1948 int i;
1949
1950 cur_log = flist_entry(entry, struct io_logs, list);
1951
1952 for (i = 0; i < cur_log->nr_samples; i++) {
1953 struct io_sample *s = get_sample(log, cur_log, i);
1954
1955 s->time = cpu_to_le64(s->time);
1956 s->data.val = cpu_to_le64(s->data.val);
1957 s->__ddir = cpu_to_le32(s->__ddir);
1958 s->bs = cpu_to_le32(s->bs);
1959
1960 if (log->log_offset) {
1961 struct io_sample_offset *so = (void *) s;
1962
1963 so->offset = cpu_to_le64(so->offset);
1964 }
1965 }
1966 }
1967
1968 /*
1969 * Assemble header entry first
1970 */
1971 first = fio_net_prep_cmd(FIO_NET_CMD_IOLOG, &pdu, sizeof(pdu), NULL, SK_F_VEC | SK_F_INLINE | SK_F_COPY);
1972
1973 /*
1974 * Now append actual log entries. If log compression was enabled on
1975 * the job, just send out the compressed chunks directly. If we
1976 * have a plain log, compress if we can, then send. Otherwise, send
1977 * the plain text output.
1978 */
1979 if (!flist_empty(&log->chunk_list))
1980 ret = fio_append_gz_chunks(first, log);
1981 else if (use_zlib)
1982 ret = fio_append_iolog_gz(first, log);
1983 else
1984 ret = fio_append_text_log(first, log);
1985
1986 fio_net_queue_entry(first);
1987 return ret;
1988 }
1989
fio_server_send_add_job(struct thread_data * td)1990 void fio_server_send_add_job(struct thread_data *td)
1991 {
1992 struct cmd_add_job_pdu pdu;
1993
1994 memset(&pdu, 0, sizeof(pdu));
1995 pdu.thread_number = cpu_to_le32(td->thread_number);
1996 pdu.groupid = cpu_to_le32(td->groupid);
1997 convert_thread_options_to_net(&pdu.top, &td->o);
1998
1999 fio_net_queue_cmd(FIO_NET_CMD_ADD_JOB, &pdu, sizeof(pdu), NULL,
2000 SK_F_COPY);
2001 }
2002
fio_server_send_start(struct thread_data * td)2003 void fio_server_send_start(struct thread_data *td)
2004 {
2005 struct sk_out *sk_out = pthread_getspecific(sk_out_key);
2006
2007 assert(sk_out->sk != -1);
2008
2009 fio_net_queue_cmd(FIO_NET_CMD_SERVER_START, NULL, 0, NULL, SK_F_SIMPLE);
2010 }
2011
fio_server_get_verify_state(const char * name,int threadnumber,void ** datap)2012 int fio_server_get_verify_state(const char *name, int threadnumber,
2013 void **datap)
2014 {
2015 struct thread_io_list *s;
2016 struct cmd_sendfile out;
2017 struct cmd_reply *rep;
2018 uint64_t tag;
2019 void *data;
2020 int ret;
2021
2022 dprint(FD_NET, "server: request verify state\n");
2023
2024 rep = smalloc(sizeof(*rep));
2025 if (!rep)
2026 return ENOMEM;
2027
2028 __fio_mutex_init(&rep->lock, FIO_MUTEX_LOCKED);
2029 rep->data = NULL;
2030 rep->error = 0;
2031
2032 verify_state_gen_name((char *) out.path, sizeof(out.path), name, me,
2033 threadnumber);
2034 tag = (uint64_t) (uintptr_t) rep;
2035 fio_net_queue_cmd(FIO_NET_CMD_SENDFILE, &out, sizeof(out), &tag,
2036 SK_F_COPY);
2037
2038 /*
2039 * Wait for the backend to receive the reply
2040 */
2041 if (fio_mutex_down_timeout(&rep->lock, 10000)) {
2042 log_err("fio: timed out waiting for reply\n");
2043 ret = ETIMEDOUT;
2044 goto fail;
2045 }
2046
2047 if (rep->error) {
2048 log_err("fio: failure on receiving state file %s: %s\n",
2049 out.path, strerror(rep->error));
2050 ret = rep->error;
2051 fail:
2052 *datap = NULL;
2053 sfree(rep);
2054 fio_net_queue_quit();
2055 return ret;
2056 }
2057
2058 /*
2059 * The format is verify_state_hdr, then thread_io_list. Verify
2060 * the header, and the thread_io_list checksum
2061 */
2062 s = rep->data + sizeof(struct verify_state_hdr);
2063 if (verify_state_hdr(rep->data, s)) {
2064 ret = EILSEQ;
2065 goto fail;
2066 }
2067
2068 /*
2069 * Don't need the header from now, copy just the thread_io_list
2070 */
2071 ret = 0;
2072 rep->size -= sizeof(struct verify_state_hdr);
2073 data = malloc(rep->size);
2074 memcpy(data, s, rep->size);
2075 *datap = data;
2076
2077 sfree(rep->data);
2078 __fio_mutex_remove(&rep->lock);
2079 sfree(rep);
2080 return ret;
2081 }
2082
fio_init_server_ip(void)2083 static int fio_init_server_ip(void)
2084 {
2085 struct sockaddr *addr;
2086 socklen_t socklen;
2087 char buf[80];
2088 const char *str;
2089 int sk, opt;
2090
2091 if (use_ipv6)
2092 sk = socket(AF_INET6, SOCK_STREAM, 0);
2093 else
2094 sk = socket(AF_INET, SOCK_STREAM, 0);
2095
2096 if (sk < 0) {
2097 log_err("fio: socket: %s\n", strerror(errno));
2098 return -1;
2099 }
2100
2101 opt = 1;
2102 if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, (void *)&opt, sizeof(opt)) < 0) {
2103 log_err("fio: setsockopt(REUSEADDR): %s\n", strerror(errno));
2104 close(sk);
2105 return -1;
2106 }
2107 #ifdef SO_REUSEPORT
2108 /*
2109 * Not fatal if fails, so just ignore it if that happens
2110 */
2111 setsockopt(sk, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt));
2112 #endif
2113
2114 if (use_ipv6) {
2115 const void *src = &saddr_in6.sin6_addr;
2116
2117 addr = (struct sockaddr *) &saddr_in6;
2118 socklen = sizeof(saddr_in6);
2119 saddr_in6.sin6_family = AF_INET6;
2120 str = inet_ntop(AF_INET6, src, buf, sizeof(buf));
2121 } else {
2122 const void *src = &saddr_in.sin_addr;
2123
2124 addr = (struct sockaddr *) &saddr_in;
2125 socklen = sizeof(saddr_in);
2126 saddr_in.sin_family = AF_INET;
2127 str = inet_ntop(AF_INET, src, buf, sizeof(buf));
2128 }
2129
2130 if (bind(sk, addr, socklen) < 0) {
2131 log_err("fio: bind: %s\n", strerror(errno));
2132 log_info("fio: failed with IPv%c %s\n", use_ipv6 ? '6' : '4', str);
2133 close(sk);
2134 return -1;
2135 }
2136
2137 return sk;
2138 }
2139
fio_init_server_sock(void)2140 static int fio_init_server_sock(void)
2141 {
2142 struct sockaddr_un addr;
2143 socklen_t len;
2144 mode_t mode;
2145 int sk;
2146
2147 sk = socket(AF_UNIX, SOCK_STREAM, 0);
2148 if (sk < 0) {
2149 log_err("fio: socket: %s\n", strerror(errno));
2150 return -1;
2151 }
2152
2153 mode = umask(000);
2154
2155 memset(&addr, 0, sizeof(addr));
2156 addr.sun_family = AF_UNIX;
2157 strncpy(addr.sun_path, bind_sock, sizeof(addr.sun_path) - 1);
2158
2159 len = sizeof(addr.sun_family) + strlen(bind_sock) + 1;
2160
2161 if (bind(sk, (struct sockaddr *) &addr, len) < 0) {
2162 log_err("fio: bind: %s\n", strerror(errno));
2163 close(sk);
2164 return -1;
2165 }
2166
2167 umask(mode);
2168 return sk;
2169 }
2170
fio_init_server_connection(void)2171 static int fio_init_server_connection(void)
2172 {
2173 char bind_str[128];
2174 int sk;
2175
2176 dprint(FD_NET, "starting server\n");
2177
2178 if (!bind_sock)
2179 sk = fio_init_server_ip();
2180 else
2181 sk = fio_init_server_sock();
2182
2183 if (sk < 0)
2184 return sk;
2185
2186 memset(bind_str, 0, sizeof(bind_str));
2187
2188 if (!bind_sock) {
2189 char *p, port[16];
2190 const void *src;
2191 int af;
2192
2193 if (use_ipv6) {
2194 af = AF_INET6;
2195 src = &saddr_in6.sin6_addr;
2196 } else {
2197 af = AF_INET;
2198 src = &saddr_in.sin_addr;
2199 }
2200
2201 p = (char *) inet_ntop(af, src, bind_str, sizeof(bind_str));
2202
2203 sprintf(port, ",%u", fio_net_port);
2204 if (p)
2205 strcat(p, port);
2206 else
2207 strncpy(bind_str, port, sizeof(bind_str) - 1);
2208 } else
2209 strncpy(bind_str, bind_sock, sizeof(bind_str) - 1);
2210
2211 log_info("fio: server listening on %s\n", bind_str);
2212
2213 if (listen(sk, 4) < 0) {
2214 log_err("fio: listen: %s\n", strerror(errno));
2215 close(sk);
2216 return -1;
2217 }
2218
2219 return sk;
2220 }
2221
fio_server_parse_host(const char * host,int ipv6,struct in_addr * inp,struct in6_addr * inp6)2222 int fio_server_parse_host(const char *host, int ipv6, struct in_addr *inp,
2223 struct in6_addr *inp6)
2224
2225 {
2226 int ret = 0;
2227
2228 if (ipv6)
2229 ret = inet_pton(AF_INET6, host, inp6);
2230 else
2231 ret = inet_pton(AF_INET, host, inp);
2232
2233 if (ret != 1) {
2234 struct addrinfo hints, *res;
2235
2236 memset(&hints, 0, sizeof(hints));
2237 hints.ai_family = ipv6 ? AF_INET6 : AF_INET;
2238 hints.ai_socktype = SOCK_STREAM;
2239
2240 ret = getaddrinfo(host, NULL, &hints, &res);
2241 if (ret) {
2242 log_err("fio: failed to resolve <%s> (%s)\n", host,
2243 gai_strerror(ret));
2244 return 1;
2245 }
2246
2247 if (ipv6)
2248 memcpy(inp6, &((struct sockaddr_in6 *) res->ai_addr)->sin6_addr, sizeof(*inp6));
2249 else
2250 memcpy(inp, &((struct sockaddr_in *) res->ai_addr)->sin_addr, sizeof(*inp));
2251
2252 ret = 1;
2253 freeaddrinfo(res);
2254 }
2255
2256 return !(ret == 1);
2257 }
2258
2259 /*
2260 * Parse a host/ip/port string. Reads from 'str'.
2261 *
2262 * Outputs:
2263 *
2264 * For IPv4:
2265 * *ptr is the host, *port is the port, inp is the destination.
2266 * For IPv6:
2267 * *ptr is the host, *port is the port, inp6 is the dest, and *ipv6 is 1.
2268 * For local domain sockets:
2269 * *ptr is the filename, *is_sock is 1.
2270 */
fio_server_parse_string(const char * str,char ** ptr,int * is_sock,int * port,struct in_addr * inp,struct in6_addr * inp6,int * ipv6)2271 int fio_server_parse_string(const char *str, char **ptr, int *is_sock,
2272 int *port, struct in_addr *inp,
2273 struct in6_addr *inp6, int *ipv6)
2274 {
2275 const char *host = str;
2276 char *portp;
2277 int lport = 0;
2278
2279 *ptr = NULL;
2280 *is_sock = 0;
2281 *port = fio_net_port;
2282 *ipv6 = 0;
2283
2284 if (!strncmp(str, "sock:", 5)) {
2285 *ptr = strdup(str + 5);
2286 *is_sock = 1;
2287
2288 return 0;
2289 }
2290
2291 /*
2292 * Is it ip:<ip or host>:port
2293 */
2294 if (!strncmp(host, "ip:", 3))
2295 host += 3;
2296 else if (!strncmp(host, "ip4:", 4))
2297 host += 4;
2298 else if (!strncmp(host, "ip6:", 4)) {
2299 host += 4;
2300 *ipv6 = 1;
2301 } else if (host[0] == ':') {
2302 /* String is :port */
2303 host++;
2304 lport = atoi(host);
2305 if (!lport || lport > 65535) {
2306 log_err("fio: bad server port %u\n", lport);
2307 return 1;
2308 }
2309 /* no hostname given, we are done */
2310 *port = lport;
2311 return 0;
2312 }
2313
2314 /*
2315 * If no port seen yet, check if there's a last ',' at the end
2316 */
2317 if (!lport) {
2318 portp = strchr(host, ',');
2319 if (portp) {
2320 *portp = '\0';
2321 portp++;
2322 lport = atoi(portp);
2323 if (!lport || lport > 65535) {
2324 log_err("fio: bad server port %u\n", lport);
2325 return 1;
2326 }
2327 }
2328 }
2329
2330 if (lport)
2331 *port = lport;
2332
2333 if (!strlen(host))
2334 return 0;
2335
2336 *ptr = strdup(host);
2337
2338 if (fio_server_parse_host(*ptr, *ipv6, inp, inp6)) {
2339 free(*ptr);
2340 *ptr = NULL;
2341 return 1;
2342 }
2343
2344 if (*port == 0)
2345 *port = fio_net_port;
2346
2347 return 0;
2348 }
2349
2350 /*
2351 * Server arg should be one of:
2352 *
2353 * sock:/path/to/socket
2354 * ip:1.2.3.4
2355 * 1.2.3.4
2356 *
2357 * Where sock uses unix domain sockets, and ip binds the server to
2358 * a specific interface. If no arguments are given to the server, it
2359 * uses IP and binds to 0.0.0.0.
2360 *
2361 */
fio_handle_server_arg(void)2362 static int fio_handle_server_arg(void)
2363 {
2364 int port = fio_net_port;
2365 int is_sock, ret = 0;
2366
2367 saddr_in.sin_addr.s_addr = htonl(INADDR_ANY);
2368
2369 if (!fio_server_arg)
2370 goto out;
2371
2372 ret = fio_server_parse_string(fio_server_arg, &bind_sock, &is_sock,
2373 &port, &saddr_in.sin_addr,
2374 &saddr_in6.sin6_addr, &use_ipv6);
2375
2376 if (!is_sock && bind_sock) {
2377 free(bind_sock);
2378 bind_sock = NULL;
2379 }
2380
2381 out:
2382 fio_net_port = port;
2383 saddr_in.sin_port = htons(port);
2384 saddr_in6.sin6_port = htons(port);
2385 return ret;
2386 }
2387
sig_int(int sig)2388 static void sig_int(int sig)
2389 {
2390 if (bind_sock)
2391 unlink(bind_sock);
2392 }
2393
set_sig_handlers(void)2394 static void set_sig_handlers(void)
2395 {
2396 struct sigaction act;
2397
2398 memset(&act, 0, sizeof(act));
2399 act.sa_handler = sig_int;
2400 act.sa_flags = SA_RESTART;
2401 sigaction(SIGINT, &act, NULL);
2402 }
2403
fio_server_destroy_sk_key(void)2404 void fio_server_destroy_sk_key(void)
2405 {
2406 pthread_key_delete(sk_out_key);
2407 }
2408
fio_server_create_sk_key(void)2409 int fio_server_create_sk_key(void)
2410 {
2411 if (pthread_key_create(&sk_out_key, NULL)) {
2412 log_err("fio: can't create sk_out backend key\n");
2413 return 1;
2414 }
2415
2416 pthread_setspecific(sk_out_key, NULL);
2417 return 0;
2418 }
2419
fio_server(void)2420 static int fio_server(void)
2421 {
2422 int sk, ret;
2423
2424 dprint(FD_NET, "starting server\n");
2425
2426 if (fio_handle_server_arg())
2427 return -1;
2428
2429 sk = fio_init_server_connection();
2430 if (sk < 0)
2431 return -1;
2432
2433 set_sig_handlers();
2434
2435 ret = accept_loop(sk);
2436
2437 close(sk);
2438
2439 if (fio_server_arg) {
2440 free(fio_server_arg);
2441 fio_server_arg = NULL;
2442 }
2443 if (bind_sock)
2444 free(bind_sock);
2445
2446 return ret;
2447 }
2448
fio_server_got_signal(int signal)2449 void fio_server_got_signal(int signal)
2450 {
2451 struct sk_out *sk_out = pthread_getspecific(sk_out_key);
2452
2453 assert(sk_out);
2454
2455 if (signal == SIGPIPE)
2456 sk_out->sk = -1;
2457 else {
2458 log_info("\nfio: terminating on signal %d\n", signal);
2459 exit_backend = 1;
2460 }
2461 }
2462
check_existing_pidfile(const char * pidfile)2463 static int check_existing_pidfile(const char *pidfile)
2464 {
2465 struct stat sb;
2466 char buf[16];
2467 pid_t pid;
2468 FILE *f;
2469
2470 if (stat(pidfile, &sb))
2471 return 0;
2472
2473 f = fopen(pidfile, "r");
2474 if (!f)
2475 return 0;
2476
2477 if (fread(buf, sb.st_size, 1, f) <= 0) {
2478 fclose(f);
2479 return 1;
2480 }
2481 fclose(f);
2482
2483 pid = atoi(buf);
2484 if (kill(pid, SIGCONT) < 0)
2485 return errno != ESRCH;
2486
2487 return 1;
2488 }
2489
write_pid(pid_t pid,const char * pidfile)2490 static int write_pid(pid_t pid, const char *pidfile)
2491 {
2492 FILE *fpid;
2493
2494 fpid = fopen(pidfile, "w");
2495 if (!fpid) {
2496 log_err("fio: failed opening pid file %s\n", pidfile);
2497 return 1;
2498 }
2499
2500 fprintf(fpid, "%u\n", (unsigned int) pid);
2501 fclose(fpid);
2502 return 0;
2503 }
2504
2505 /*
2506 * If pidfile is specified, background us.
2507 */
fio_start_server(char * pidfile)2508 int fio_start_server(char *pidfile)
2509 {
2510 pid_t pid;
2511 int ret;
2512
2513 #if defined(WIN32)
2514 WSADATA wsd;
2515 WSAStartup(MAKEWORD(2, 2), &wsd);
2516 #endif
2517
2518 if (!pidfile)
2519 return fio_server();
2520
2521 if (check_existing_pidfile(pidfile)) {
2522 log_err("fio: pidfile %s exists and server appears alive\n",
2523 pidfile);
2524 free(pidfile);
2525 return -1;
2526 }
2527
2528 pid = fork();
2529 if (pid < 0) {
2530 log_err("fio: failed server fork: %s\n", strerror(errno));
2531 free(pidfile);
2532 return -1;
2533 } else if (pid) {
2534 ret = write_pid(pid, pidfile);
2535 free(pidfile);
2536 _exit(ret);
2537 }
2538
2539 setsid();
2540 openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER);
2541 log_syslog = 1;
2542 close(STDIN_FILENO);
2543 close(STDOUT_FILENO);
2544 close(STDERR_FILENO);
2545 f_out = NULL;
2546 f_err = NULL;
2547
2548 ret = fio_server();
2549
2550 closelog();
2551 unlink(pidfile);
2552 free(pidfile);
2553 return ret;
2554 }
2555
fio_server_set_arg(const char * arg)2556 void fio_server_set_arg(const char *arg)
2557 {
2558 fio_server_arg = strdup(arg);
2559 }
2560