10 #include <sys/socket.h>
14 #include <netinet/in.h>
15 #include <arpa/inet.h>
26 #include "crc/crc16.h"
27 #include "lib/ieee754.h"
31 int fio_net_port = FIO_NET_PORT;
43 struct flist_head list; /* link on sk_out->list */
44 int flags; /* SK_F_* */
45 int opcode; /* Actual command fields */
49 struct flist_head next; /* Other sk_entry's, if linked command */
56 struct fio_mutex *lock;
57 struct flist_head list;
58 struct fio_mutex *wait;
61 static char *fio_server_arg;
62 static char *bind_sock;
63 static struct sockaddr_in saddr_in;
64 static struct sockaddr_in6 saddr_in6;
67 static unsigned int has_zlib = 1;
69 static unsigned int has_zlib = 0;
71 static unsigned int use_zlib;
74 static pthread_key_t sk_out_key;
76 struct fio_fork_item {
77 struct flist_head list;
85 struct fio_mutex lock;
91 static const char *fio_server_ops[FIO_NET_CMD_NR] = {
116 static void sk_lock(struct sk_out *sk_out)
118 fio_mutex_down(sk_out->lock);
121 static void sk_unlock(struct sk_out *sk_out)
123 fio_mutex_up(sk_out->lock);
126 void sk_out_assign(struct sk_out *sk_out)
134 pthread_setspecific(sk_out_key, sk_out);
137 static void __sk_out_drop(struct sk_out *sk_out)
139 fio_mutex_remove(sk_out->lock);
140 fio_mutex_remove(sk_out->wait);
144 void sk_out_drop(void)
146 struct sk_out *sk_out = pthread_getspecific(sk_out_key);
152 refs = --sk_out->refs;
156 __sk_out_drop(sk_out);
158 pthread_setspecific(sk_out_key, NULL);
162 const char *fio_server_op(unsigned int op)
166 if (op < FIO_NET_CMD_NR)
167 return fio_server_ops[op];
169 sprintf(buf, "UNKNOWN/%d", op);
173 static ssize_t iov_total_len(const struct iovec *iov, int count)
185 static int fio_sendv_data(int sk, struct iovec *iov, int count)
187 ssize_t total_len = iov_total_len(iov, count);
191 ret = writev(sk, iov, count);
198 if (ret >= iov->iov_len) {
203 iov->iov_base += ret;
209 else if (errno == EAGAIN || errno == EINTR)
213 } while (!exit_backend);
221 int fio_send_data(int sk, const void *p, unsigned int len)
223 struct iovec iov = { .iov_base = (void *) p, .iov_len = len };
225 assert(len <= sizeof(struct fio_net_cmd) + FIO_SERVER_MAX_FRAGMENT_PDU);
227 return fio_sendv_data(sk, &iov, 1);
230 int fio_recv_data(int sk, void *p, unsigned int len)
233 int ret = recv(sk, p, len, MSG_WAITALL);
243 else if (errno == EAGAIN || errno == EINTR)
247 } while (!exit_backend);
255 static int verify_convert_cmd(struct fio_net_cmd *cmd)
259 cmd->cmd_crc16 = le16_to_cpu(cmd->cmd_crc16);
260 cmd->pdu_crc16 = le16_to_cpu(cmd->pdu_crc16);
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);
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);
275 switch (cmd->version) {
279 log_err("fio: bad server cmd version %d\n", cmd->version);
283 if (cmd->pdu_len > FIO_SERVER_MAX_FRAGMENT_PDU) {
284 log_err("fio: command payload too large: %u\n", cmd->pdu_len);
292 * Read (and defragment, if necessary) incoming commands
294 struct fio_net_cmd *fio_net_recv_cmd(int sk)
296 struct fio_net_cmd cmd, *tmp, *cmdret = NULL;
297 size_t cmd_size = 0, pdu_offset = 0;
303 ret = fio_recv_data(sk, &cmd, sizeof(cmd));
307 /* We have a command, verify it and swap if need be */
308 ret = verify_convert_cmd(&cmd);
313 /* if this is text, add room for \0 at the end */
314 cmd_size = sizeof(cmd) + cmd.pdu_len + 1;
317 cmd_size += cmd.pdu_len;
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);
325 tmp = realloc(cmdret, cmd_size);
327 log_err("fio: server failed allocating cmd\n");
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);
345 /* There's payload, get it */
346 pdu = (void *) cmdret->payload + pdu_offset;
347 ret = fio_recv_data(sk, pdu, cmd.pdu_len);
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);
360 pdu_offset += cmd.pdu_len;
362 cmdret->pdu_len += cmd.pdu_len;
364 } while (cmd.flags & FIO_NET_CMD_F_MORE);
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;
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);
386 /* frag flag is internal */
387 cmdret->flags &= ~FIO_NET_CMD_F_MORE;
393 static void add_reply(uint64_t tag, struct flist_head *list)
395 struct fio_net_cmd_reply *reply;
397 reply = (struct fio_net_cmd_reply *) (uintptr_t) tag;
398 flist_add_tail(&reply->list, list);
401 static uint64_t alloc_reply(uint64_t tag, uint16_t opcode)
403 struct fio_net_cmd_reply *reply;
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;
411 return (uintptr_t) reply;
414 static void free_reply(uint64_t tag)
416 struct fio_net_cmd_reply *reply;
418 reply = (struct fio_net_cmd_reply *) (uintptr_t) tag;
422 void fio_net_cmd_crc_pdu(struct fio_net_cmd *cmd, const void *pdu)
426 cmd->cmd_crc16 = __cpu_to_le16(fio_crc16(cmd, FIO_NET_CMD_CRC_SZ));
428 pdu_len = le32_to_cpu(cmd->pdu_len);
429 cmd->pdu_crc16 = __cpu_to_le16(fio_crc16(pdu, pdu_len));
432 void fio_net_cmd_crc(struct fio_net_cmd *cmd)
434 fio_net_cmd_crc_pdu(cmd, cmd->payload);
437 int fio_net_send_cmd(int fd, uint16_t opcode, const void *buf, off_t size,
438 uint64_t *tagptr, struct flist_head *list)
440 struct fio_net_cmd *cmd = NULL;
441 size_t this_len, cur_len = 0;
447 tag = *tagptr = alloc_reply(*tagptr, opcode);
449 tag = tagptr ? *tagptr : 0;
453 if (this_len > FIO_SERVER_MAX_FRAGMENT_PDU)
454 this_len = FIO_SERVER_MAX_FRAGMENT_PDU;
456 if (!cmd || cur_len < sizeof(*cmd) + this_len) {
460 cur_len = sizeof(*cmd) + this_len;
461 cmd = malloc(cur_len);
464 fio_init_net_cmd(cmd, opcode, buf, this_len, tag);
467 cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE);
469 fio_net_cmd_crc(cmd);
471 ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len);
474 } while (!ret && size);
480 add_reply(tag, list);
489 struct sk_entry *fio_net_prep_cmd(uint16_t opcode, void *buf, off_t size,
490 uint64_t *tagptr, int flags)
492 struct sk_entry *entry;
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);
503 entry->tagptr = tagptr;
504 entry->flags = flags;
509 static void fio_net_queue_entry(struct sk_entry *entry)
511 struct sk_out *sk_out = pthread_getspecific(sk_out_key);
514 flist_add_tail(&entry->list, &sk_out->list);
517 fio_mutex_up(sk_out->wait);
520 static int fio_net_queue_cmd(uint16_t opcode, void *buf, off_t size,
521 uint64_t *tagptr, int flags)
523 struct sk_entry *entry;
525 entry = fio_net_prep_cmd(opcode, buf, size, tagptr, flags);
526 fio_net_queue_entry(entry);
530 static int fio_net_send_simple_stack_cmd(int sk, uint16_t opcode, uint64_t tag)
532 struct fio_net_cmd cmd;
534 fio_init_net_cmd(&cmd, opcode, NULL, 0, tag);
535 fio_net_cmd_crc(&cmd);
537 return fio_send_data(sk, &cmd, sizeof(cmd));
541 * If 'list' is non-NULL, then allocate and store the sent command for
542 * later verification.
544 int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t tag,
545 struct flist_head *list)
550 tag = alloc_reply(tag, opcode);
552 ret = fio_net_send_simple_stack_cmd(sk, opcode, tag);
561 add_reply(tag, list);
566 static int fio_net_queue_quit(void)
568 dprint(FD_NET, "server: sending quit\n");
570 return fio_net_queue_cmd(FIO_NET_CMD_QUIT, NULL, 0, 0, SK_F_SIMPLE);
573 int fio_net_send_quit(int sk)
575 dprint(FD_NET, "server: sending quit\n");
577 return fio_net_send_simple_cmd(sk, FIO_NET_CMD_QUIT, 0, NULL);
580 static int fio_net_send_ack(struct fio_net_cmd *cmd, int error, int signal)
582 struct cmd_end_pdu epdu;
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);
593 static int fio_net_queue_stop(int error, int signal)
595 dprint(FD_NET, "server: sending stop (%d, %d)\n", error, signal);
596 return fio_net_send_ack(NULL, error, signal);
599 static void fio_server_add_fork_item(pid_t pid, struct flist_head *list)
601 struct fio_fork_item *ffi;
603 ffi = malloc(sizeof(*ffi));
608 flist_add_tail(&ffi->list, list);
611 static void fio_server_add_conn_pid(struct flist_head *conn_list, pid_t pid)
613 dprint(FD_NET, "server: forked off connection job (pid=%u)\n", (int) pid);
614 fio_server_add_fork_item(pid, conn_list);
617 static void fio_server_add_job_pid(struct flist_head *job_list, pid_t pid)
619 dprint(FD_NET, "server: forked off job job (pid=%u)\n", (int) pid);
620 fio_server_add_fork_item(pid, job_list);
623 static void fio_server_check_fork_item(struct fio_fork_item *ffi)
627 ret = waitpid(ffi->pid, &status, WNOHANG);
629 if (errno == ECHILD) {
630 log_err("fio: connection pid %u disappeared\n", (int) ffi->pid);
633 log_err("fio: waitpid: %s\n", strerror(errno));
634 } else if (ret == ffi->pid) {
635 if (WIFSIGNALED(status)) {
636 ffi->signal = WTERMSIG(status);
639 if (WIFEXITED(status)) {
640 if (WEXITSTATUS(status))
641 ffi->exitval = WEXITSTATUS(status);
647 static void fio_server_fork_item_done(struct fio_fork_item *ffi, bool stop)
649 dprint(FD_NET, "pid %u exited, sig=%u, exitval=%d\n", (int) ffi->pid, ffi->signal, ffi->exitval);
652 * Fold STOP and QUIT...
655 fio_net_queue_stop(ffi->exitval, ffi->signal);
656 fio_net_queue_quit();
659 flist_del(&ffi->list);
663 static void fio_server_check_fork_items(struct flist_head *list, bool stop)
665 struct flist_head *entry, *tmp;
666 struct fio_fork_item *ffi;
668 flist_for_each_safe(entry, tmp, list) {
669 ffi = flist_entry(entry, struct fio_fork_item, list);
671 fio_server_check_fork_item(ffi);
674 fio_server_fork_item_done(ffi, stop);
678 static void fio_server_check_jobs(struct flist_head *job_list)
680 fio_server_check_fork_items(job_list, true);
683 static void fio_server_check_conns(struct flist_head *conn_list)
685 fio_server_check_fork_items(conn_list, false);
688 static int handle_load_file_cmd(struct fio_net_cmd *cmd)
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;
694 dprint(FD_NET, "server: loading local file %s\n", (char *) file_name);
696 pdu->name_len = le16_to_cpu(pdu->name_len);
697 pdu->client_type = le16_to_cpu(pdu->client_type);
699 if (parse_jobs_ini(file_name, 0, 0, pdu->client_type)) {
700 fio_net_queue_quit();
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);
710 static int handle_run_cmd(struct sk_out *sk_out, struct flist_head *job_list,
711 struct fio_net_cmd *cmd)
721 fio_server_add_job_pid(job_list, pid);
725 ret = fio_backend(sk_out);
730 static int handle_job_cmd(struct fio_net_cmd *cmd)
732 struct cmd_job_pdu *pdu = (struct cmd_job_pdu *) cmd->payload;
733 void *buf = pdu->buf;
734 struct cmd_start_pdu spdu;
736 pdu->buf_len = le32_to_cpu(pdu->buf_len);
737 pdu->client_type = le32_to_cpu(pdu->client_type);
739 if (parse_jobs_ini(buf, 1, 0, pdu->client_type)) {
740 fio_net_queue_quit();
744 spdu.jobs = cpu_to_le32(thread_number);
745 spdu.stat_outputs = cpu_to_le32(stat_number);
747 fio_net_queue_cmd(FIO_NET_CMD_START, &spdu, sizeof(spdu), NULL, SK_F_COPY);
751 static int handle_jobline_cmd(struct fio_net_cmd *cmd)
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;
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);
767 dprint(FD_NET, "server: %d command line args\n", clp->lines);
769 for (i = 0; i < clp->lines; i++) {
771 argv[i] = (char *) cslp->text;
773 offset += sizeof(*cslp) + le16_to_cpu(cslp->len);
774 dprint(FD_NET, "server: %d: %s\n", i, argv[i]);
777 if (parse_cmd_line(clp->lines, argv, clp->client_type)) {
778 fio_net_queue_quit();
785 spdu.jobs = cpu_to_le32(thread_number);
786 spdu.stat_outputs = cpu_to_le32(stat_number);
788 fio_net_queue_cmd(FIO_NET_CMD_START, &spdu, sizeof(spdu), NULL, SK_F_COPY);
792 static int handle_probe_cmd(struct fio_net_cmd *cmd)
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;
798 dprint(FD_NET, "server: sending probe reply\n");
800 strcpy(me, (char *) pdu->server);
802 memset(&probe, 0, sizeof(probe));
803 gethostname((char *) probe.hostname, sizeof(probe.hostname));
804 #ifdef CONFIG_BIG_ENDIAN
807 strncpy((char *) probe.fio_version, fio_version_string, sizeof(probe.fio_version));
810 probe.arch = FIO_ARCH;
811 probe.bpp = sizeof(void *);
812 probe.cpus = __cpu_to_le32(cpus_online());
815 * If the client supports compression and we do too, then enable it
817 if (has_zlib && le64_to_cpu(pdu->flags) & FIO_PROBE_FLAG_ZLIB) {
818 probe.flags = __cpu_to_le64(FIO_PROBE_FLAG_ZLIB);
825 return fio_net_queue_cmd(FIO_NET_CMD_PROBE, &probe, sizeof(probe), &tag, SK_F_COPY);
828 static int handle_send_eta_cmd(struct fio_net_cmd *cmd)
831 uint64_t tag = cmd->tag;
835 dprint(FD_NET, "server sending status\n");
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
841 je = get_jobs_eta(true, &size);
844 je = calloc(1, size);
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);
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]);
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);
868 fio_net_queue_cmd(FIO_NET_CMD_ETA, je, size, &tag, SK_F_FREE);
872 static int send_update_job_reply(uint64_t __tag, int error)
874 uint64_t tag = __tag;
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);
881 static int handle_update_job_cmd(struct fio_net_cmd *cmd)
883 struct cmd_add_job_pdu *pdu = (struct cmd_add_job_pdu *) cmd->payload;
884 struct thread_data *td;
887 tnumber = le32_to_cpu(pdu->thread_number);
889 dprint(FD_NET, "server: updating options for job %u\n", tnumber);
891 if (!tnumber || tnumber > thread_number) {
892 send_update_job_reply(cmd->tag, ENODEV);
896 td = &threads[tnumber - 1];
897 convert_thread_options_to_cpu(&td->o, &pdu->top);
898 send_update_job_reply(cmd->tag, 0);
902 static int handle_trigger_cmd(struct fio_net_cmd *cmd)
904 struct cmd_vtrigger_pdu *pdu = (struct cmd_vtrigger_pdu *) cmd->payload;
905 char *buf = (char *) pdu->cmd;
906 struct all_io_list *rep;
909 pdu->len = le16_to_cpu(pdu->len);
910 buf[pdu->len] = '\0';
912 rep = get_all_io_list(IO_LIST_ALL, &sz);
914 struct all_io_list state;
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);
919 fio_net_queue_cmd(FIO_NET_CMD_VTRIGGER, rep, sz, NULL, SK_F_FREE);
925 static int handle_command(struct sk_out *sk_out, struct flist_head *job_list,
926 struct fio_net_cmd *cmd)
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);
934 switch (cmd->opcode) {
935 case FIO_NET_CMD_QUIT:
936 fio_terminate_threads(TERMINATE_ALL);
939 case FIO_NET_CMD_EXIT:
942 case FIO_NET_CMD_LOAD_FILE:
943 ret = handle_load_file_cmd(cmd);
945 case FIO_NET_CMD_JOB:
946 ret = handle_job_cmd(cmd);
948 case FIO_NET_CMD_JOBLINE:
949 ret = handle_jobline_cmd(cmd);
951 case FIO_NET_CMD_PROBE:
952 ret = handle_probe_cmd(cmd);
954 case FIO_NET_CMD_SEND_ETA:
955 ret = handle_send_eta_cmd(cmd);
957 case FIO_NET_CMD_RUN:
958 ret = handle_run_cmd(sk_out, job_list, cmd);
960 case FIO_NET_CMD_UPDATE_JOB:
961 ret = handle_update_job_cmd(cmd);
963 case FIO_NET_CMD_VTRIGGER:
964 ret = handle_trigger_cmd(cmd);
966 case FIO_NET_CMD_SENDFILE: {
967 struct cmd_sendfile_reply *in;
968 struct cmd_reply *rep;
970 rep = (struct cmd_reply *) (uintptr_t) cmd->tag;
972 in = (struct cmd_sendfile_reply *) cmd->payload;
973 in->size = le32_to_cpu(in->size);
974 in->error = le32_to_cpu(in->error);
977 rep->error = in->error;
980 rep->data = smalloc(in->size);
985 rep->size = in->size;
986 memcpy(rep->data, in->data, in->size);
989 fio_mutex_up(&rep->lock);
993 log_err("fio: unknown opcode: %s\n", fio_server_op(cmd->opcode));
1001 * Send a command with a separate PDU, not inlined in the command
1003 static int fio_send_cmd_ext_pdu(int sk, uint16_t opcode, const void *buf,
1004 off_t size, uint64_t tag, uint32_t flags)
1006 struct fio_net_cmd cmd;
1007 struct iovec iov[2];
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;
1014 __fio_init_net_cmd(&cmd, opcode, size, tag);
1015 cmd.flags = __cpu_to_le32(flags);
1016 fio_net_cmd_crc_pdu(&cmd, buf);
1018 return fio_sendv_data(sk, iov, 2);
1021 static void finish_entry(struct sk_entry *entry)
1023 if (entry->flags & SK_F_FREE)
1025 else if (entry->flags & SK_F_COPY)
1031 static void entry_set_flags_tag(struct sk_entry *entry, struct flist_head *list,
1032 unsigned int *flags, uint64_t *tag)
1034 if (!flist_empty(list))
1035 *flags = FIO_NET_CMD_F_MORE;
1040 *tag = *entry->tagptr;
1045 static int send_vec_entry(struct sk_out *sk_out, struct sk_entry *first)
1051 entry_set_flags_tag(first, &first->next, &flags, &tag);
1053 ret = fio_send_cmd_ext_pdu(sk_out->sk, first->opcode, first->buf, first->size, tag, flags);
1055 while (!flist_empty(&first->next)) {
1056 struct sk_entry *next;
1058 next = flist_first_entry(&first->next, struct sk_entry, list);
1059 flist_del_init(&next->list);
1061 entry_set_flags_tag(next, &first->next, &flags, &tag);
1063 ret += fio_send_cmd_ext_pdu(sk_out->sk, next->opcode, next->buf, next->size, tag, flags);
1070 static int handle_sk_entry(struct sk_out *sk_out, struct sk_entry *entry)
1074 if (entry->flags & SK_F_VEC)
1075 ret = send_vec_entry(sk_out, entry);
1076 if (entry->flags & SK_F_SIMPLE) {
1080 tag = *entry->tagptr;
1082 ret = fio_net_send_simple_cmd(sk_out->sk, entry->opcode, tag, NULL);
1084 ret = fio_net_send_cmd(sk_out->sk, entry->opcode, entry->buf, entry->size, entry->tagptr, NULL);
1087 log_err("fio: failed handling cmd %s\n", fio_server_op(entry->opcode));
1089 finish_entry(entry);
1093 static int handle_xmits(struct sk_out *sk_out)
1095 struct sk_entry *entry;
1100 if (flist_empty(&sk_out->list)) {
1105 flist_splice_init(&sk_out->list, &list);
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);
1117 static int handle_connection(struct sk_out *sk_out)
1119 struct fio_net_cmd *cmd = NULL;
1120 FLIST_HEAD(job_list);
1126 while (!exit_backend) {
1127 struct pollfd pfd = {
1136 if (!flist_empty(&job_list))
1139 handle_xmits(sk_out);
1141 ret = poll(&pfd, 1, 0);
1145 log_err("fio: poll: %s\n", strerror(errno));
1148 fio_server_check_jobs(&job_list);
1149 fio_mutex_down_timeout(sk_out->wait, timeout);
1153 if (pfd.revents & POLLIN)
1155 if (pfd.revents & (POLLERR|POLLHUP)) {
1159 } while (!exit_backend);
1161 fio_server_check_jobs(&job_list);
1166 cmd = fio_net_recv_cmd(sk_out->sk);
1172 ret = handle_command(sk_out, &job_list, cmd);
1183 handle_xmits(sk_out);
1189 /* get the address on this host bound by the input socket,
1190 * whether it is ipv6 or ipv4 */
1192 int get_my_addr_str(int sk)
1194 struct sockaddr_in6 myaddr6 = { 0, };
1195 struct sockaddr_in myaddr4 = { 0, };
1196 struct sockaddr *sockaddr_p;
1202 len = sizeof(myaddr6);
1203 sockaddr_p = (struct sockaddr * )&myaddr6;
1204 net_addr = (char * )&myaddr6.sin6_addr;
1206 len = sizeof(myaddr4);
1207 sockaddr_p = (struct sockaddr * )&myaddr4;
1208 net_addr = (char * )&myaddr4.sin_addr;
1211 ret = getsockname(sk, sockaddr_p, &len);
1213 log_err("fio: getsockaddr: %s\n", strerror(errno));
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");
1222 dprint(FD_NET, "fio server bound to addr %s\n", client_sockaddr_str);
1226 static int accept_loop(struct sk_out *sk_out, int listen_sk)
1228 struct sockaddr_in addr;
1229 struct sockaddr_in6 addr6;
1230 socklen_t len = use_ipv6 ? sizeof(addr6) : sizeof(addr);
1232 int ret = 0, sk, exitval = 0;
1233 FLIST_HEAD(conn_list);
1235 dprint(FD_NET, "server enter accept loop\n");
1237 fio_set_fd_nonblocking(listen_sk, "server");
1239 while (!exit_backend) {
1245 pfd.events = POLLIN;
1249 if (!flist_empty(&conn_list))
1252 ret = poll(&pfd, 1, timeout);
1256 log_err("fio: poll: %s\n", strerror(errno));
1259 fio_server_check_conns(&conn_list);
1263 if (pfd.revents & POLLIN)
1265 } while (!exit_backend);
1267 fio_server_check_conns(&conn_list);
1269 if (exit_backend || ret < 0)
1273 sk = accept(listen_sk, (struct sockaddr *) &addr6, &len);
1275 sk = accept(listen_sk, (struct sockaddr *) &addr, &len);
1278 log_err("fio: accept: %s\n", strerror(errno));
1283 from = inet_ntop(AF_INET6, (struct sockaddr *) &addr6.sin6_addr, buf, sizeof(buf));
1285 from = inet_ntop(AF_INET, (struct sockaddr *) &addr.sin_addr, buf, sizeof(buf));
1287 dprint(FD_NET, "server: connect from %s\n", from);
1294 fio_server_add_conn_pid(&conn_list, pid);
1295 pthread_setspecific(sk_out_key, sk_out);
1300 get_my_addr_str(sk); /* if error, it's already logged, non-fatal */
1301 handle_connection(sk_out);
1307 int fio_server_text_output(int level, const char *buf, size_t len)
1309 struct sk_out *sk_out = pthread_getspecific(sk_out_key);
1310 struct cmd_text_pdu *pdu;
1314 if (!sk_out || sk_out->sk == -1)
1317 tlen = sizeof(*pdu) + len;
1320 pdu->level = __cpu_to_le32(level);
1321 pdu->buf_len = __cpu_to_le32(len);
1323 gettimeofday(&tv, NULL);
1324 pdu->log_sec = __cpu_to_le64(tv.tv_sec);
1325 pdu->log_usec = __cpu_to_le64(tv.tv_usec);
1327 memcpy(pdu->buf, buf, len);
1329 fio_net_queue_cmd(FIO_NET_CMD_TEXT, pdu, tlen, NULL, SK_F_COPY);
1334 static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
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);
1341 * Encode to IEEE 754 for network transfer
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));
1347 static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
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]);
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);
1367 * Send a CMD_TS, which packs struct thread_stat and group_run_stats
1368 * into a single payload.
1370 void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs)
1372 struct cmd_ts_pdu p;
1375 dprint(FD_NET, "server sending end stats\n");
1377 memset(&p, 0, sizeof(p));
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);
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);
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]);
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);
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];
1409 dst->u.i = cpu_to_le64(fio_double_to_uint64(src->u.f));
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]);
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]);
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]);
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]);
1433 p.ts.total_submit = cpu_to_le64(ts->total_submit);
1434 p.ts.total_complete = cpu_to_le64(ts->total_complete);
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]);
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);
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));
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]);
1457 convert_gs(&p.rs, rs);
1459 fio_net_queue_cmd(FIO_NET_CMD_TS, &p, sizeof(p), NULL, SK_F_COPY);
1462 void fio_server_send_gs(struct group_run_stats *rs)
1464 struct group_run_stats gs;
1466 dprint(FD_NET, "server sending group run stats\n");
1468 convert_gs(&gs, rs);
1469 fio_net_queue_cmd(FIO_NET_CMD_GS, &gs, sizeof(gs), NULL, SK_F_COPY);
1472 static void convert_agg(struct disk_util_agg *dst, struct disk_util_agg *src)
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]);
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));
1489 static void convert_dus(struct disk_util_stat *dst, struct disk_util_stat *src)
1493 dst->name[FIO_DU_NAME_SZ - 1] = '\0';
1494 strncpy((char *) dst->name, (char *) src->name, FIO_DU_NAME_SZ - 1);
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]);
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);
1508 void fio_server_send_du(void)
1510 struct disk_util *du;
1511 struct flist_head *entry;
1512 struct cmd_du_pdu pdu;
1514 dprint(FD_NET, "server: sending disk_util %d\n", !flist_empty(&disk_list));
1516 memset(&pdu, 0, sizeof(pdu));
1518 flist_for_each(entry, &disk_list) {
1519 du = flist_entry(entry, struct disk_util, list);
1521 convert_dus(&pdu.dus, &du->dus);
1522 convert_agg(&pdu.agg, &du->agg);
1524 fio_net_queue_cmd(FIO_NET_CMD_DU, &pdu, sizeof(pdu), NULL, SK_F_COPY);
1528 static int fio_send_iolog_gz(struct sk_entry *first, struct io_log *log)
1532 struct sk_entry *entry;
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.
1541 out_pdu = malloc(FIO_SERVER_MAX_FRAGMENT_PDU);
1543 stream.zalloc = Z_NULL;
1544 stream.zfree = Z_NULL;
1545 stream.opaque = Z_NULL;
1547 if (deflateInit(&stream, Z_DEFAULT_COMPRESSION) != Z_OK) {
1552 stream.next_in = (void *) log->log;
1553 stream.avail_in = log->nr_samples * log_entry_sz(log);
1556 unsigned int this_len;
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 */
1565 this_len = FIO_SERVER_MAX_FRAGMENT_PDU - stream.avail_out;
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);
1573 deflateEnd(&stream);
1580 int fio_send_iolog(struct thread_data *td, struct io_log *log, const char *name)
1582 struct cmd_iolog_pdu pdu;
1583 struct sk_entry *first;
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);
1591 strncpy((char *) pdu.name, name, FIO_NET_NAME_MAX);
1592 pdu.name[FIO_NET_NAME_MAX - 1] = '\0';
1594 for (i = 0; i < log->nr_samples; i++) {
1595 struct io_sample *s = get_sample(log, i);
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);
1602 if (log->log_offset) {
1603 struct io_sample_offset *so = (void *) s;
1605 so->offset = cpu_to_le64(so->offset);
1610 * Assemble header entry first
1612 first = fio_net_prep_cmd(FIO_NET_CMD_IOLOG, &pdu, sizeof(pdu), NULL, SK_F_COPY | SK_F_VEC);
1615 * Now append actual log entries. Compress if we can, otherwise just
1616 * plain text output.
1619 ret = fio_send_iolog_gz(first, log);
1621 struct sk_entry *entry;
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);
1632 void fio_server_send_add_job(struct thread_data *td)
1634 struct cmd_add_job_pdu pdu;
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);
1641 fio_net_queue_cmd(FIO_NET_CMD_ADD_JOB, &pdu, sizeof(pdu), NULL, SK_F_COPY);
1644 void fio_server_send_start(struct thread_data *td)
1646 struct sk_out *sk_out = pthread_getspecific(sk_out_key);
1648 assert(sk_out->sk != -1);
1650 fio_net_queue_cmd(FIO_NET_CMD_SERVER_START, NULL, 0, 0, SK_F_SIMPLE);
1653 int fio_server_get_verify_state(const char *name, int threadnumber,
1654 void **datap, int *version)
1656 struct thread_io_list *s;
1657 struct cmd_sendfile out;
1658 struct cmd_reply *rep;
1662 dprint(FD_NET, "server: request verify state\n");
1664 rep = smalloc(sizeof(*rep));
1666 log_err("fio: smalloc pool too small\n");
1670 __fio_mutex_init(&rep->lock, FIO_MUTEX_LOCKED);
1674 verify_state_gen_name((char *) out.path, sizeof(out.path), name, me,
1676 tag = (uint64_t) (uintptr_t) rep;
1677 fio_net_queue_cmd(FIO_NET_CMD_SENDFILE, &out, sizeof(out), &tag, SK_F_COPY);
1680 * Wait for the backend to receive the reply
1682 if (fio_mutex_down_timeout(&rep->lock, 10000)) {
1683 log_err("fio: timed out waiting for reply\n");
1688 log_err("fio: failure on receiving state file: %s\n", strerror(rep->error));
1692 fio_net_queue_quit();
1697 * The format is verify_state_hdr, then thread_io_list. Verify
1698 * the header, and the thread_io_list checksum
1700 s = rep->data + sizeof(struct verify_state_hdr);
1701 if (verify_state_hdr(rep->data, s, version))
1705 * Don't need the header from now, copy just the thread_io_list
1707 rep->size -= sizeof(struct verify_state_hdr);
1708 data = malloc(rep->size);
1709 memcpy(data, s, rep->size);
1713 __fio_mutex_remove(&rep->lock);
1718 static int fio_init_server_ip(void)
1720 struct sockaddr *addr;
1727 sk = socket(AF_INET6, SOCK_STREAM, 0);
1729 sk = socket(AF_INET, SOCK_STREAM, 0);
1732 log_err("fio: socket: %s\n", strerror(errno));
1737 if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, (void *)&opt, sizeof(opt)) < 0) {
1738 log_err("fio: setsockopt(REUSEADDR): %s\n", strerror(errno));
1743 if (setsockopt(sk, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) {
1744 log_err("fio: setsockopt(REUSEPORT): %s\n", strerror(errno));
1751 const void *src = &saddr_in6.sin6_addr;
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));
1758 const void *src = &saddr_in.sin_addr;
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));
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);
1776 static int fio_init_server_sock(void)
1778 struct sockaddr_un addr;
1783 sk = socket(AF_UNIX, SOCK_STREAM, 0);
1785 log_err("fio: socket: %s\n", strerror(errno));
1791 memset(&addr, 0, sizeof(addr));
1792 addr.sun_family = AF_UNIX;
1793 strncpy(addr.sun_path, bind_sock, sizeof(addr.sun_path) - 1);
1795 len = sizeof(addr.sun_family) + strlen(bind_sock) + 1;
1797 if (bind(sk, (struct sockaddr *) &addr, len) < 0) {
1798 log_err("fio: bind: %s\n", strerror(errno));
1807 static int fio_init_server_connection(void)
1812 dprint(FD_NET, "starting server\n");
1815 sk = fio_init_server_ip();
1817 sk = fio_init_server_sock();
1822 memset(bind_str, 0, sizeof(bind_str));
1831 src = &saddr_in6.sin6_addr;
1834 src = &saddr_in.sin_addr;
1837 p = (char *) inet_ntop(af, src, bind_str, sizeof(bind_str));
1839 sprintf(port, ",%u", fio_net_port);
1843 strncpy(bind_str, port, sizeof(bind_str) - 1);
1845 strncpy(bind_str, bind_sock, sizeof(bind_str) - 1);
1847 log_info("fio: server listening on %s\n", bind_str);
1849 if (listen(sk, 0) < 0) {
1850 log_err("fio: listen: %s\n", strerror(errno));
1858 int fio_server_parse_host(const char *host, int ipv6, struct in_addr *inp,
1859 struct in6_addr *inp6)
1865 ret = inet_pton(AF_INET6, host, inp6);
1867 ret = inet_pton(AF_INET, host, inp);
1870 struct addrinfo hints, *res;
1872 memset(&hints, 0, sizeof(hints));
1873 hints.ai_family = ipv6 ? AF_INET6 : AF_INET;
1874 hints.ai_socktype = SOCK_STREAM;
1876 ret = getaddrinfo(host, NULL, &hints, &res);
1878 log_err("fio: failed to resolve <%s> (%s)\n", host,
1884 memcpy(inp6, &((struct sockaddr_in6 *) res->ai_addr)->sin6_addr, sizeof(*inp6));
1886 memcpy(inp, &((struct sockaddr_in *) res->ai_addr)->sin_addr, sizeof(*inp));
1896 * Parse a host/ip/port string. Reads from 'str'.
1901 * *ptr is the host, *port is the port, inp is the destination.
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.
1907 int 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)
1911 const char *host = str;
1917 *port = fio_net_port;
1920 if (!strncmp(str, "sock:", 5)) {
1921 *ptr = strdup(str + 5);
1928 * Is it ip:<ip or host>:port
1930 if (!strncmp(host, "ip:", 3))
1932 else if (!strncmp(host, "ip4:", 4))
1934 else if (!strncmp(host, "ip6:", 4)) {
1937 } else if (host[0] == ':') {
1938 /* String is :port */
1941 if (!lport || lport > 65535) {
1942 log_err("fio: bad server port %u\n", lport);
1945 /* no hostname given, we are done */
1951 * If no port seen yet, check if there's a last ',' at the end
1954 portp = strchr(host, ',');
1958 lport = atoi(portp);
1959 if (!lport || lport > 65535) {
1960 log_err("fio: bad server port %u\n", lport);
1972 *ptr = strdup(host);
1974 if (fio_server_parse_host(*ptr, *ipv6, inp, inp6)) {
1981 *port = fio_net_port;
1987 * Server arg should be one of:
1989 * sock:/path/to/socket
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.
1998 static int fio_handle_server_arg(void)
2000 int port = fio_net_port;
2001 int is_sock, ret = 0;
2003 saddr_in.sin_addr.s_addr = htonl(INADDR_ANY);
2005 if (!fio_server_arg)
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);
2012 if (!is_sock && bind_sock) {
2018 fio_net_port = port;
2019 saddr_in.sin_port = htons(port);
2020 saddr_in6.sin6_port = htons(port);
2024 static void sig_int(int sig)
2030 static void set_sig_handlers(void)
2032 struct sigaction act;
2034 memset(&act, 0, sizeof(act));
2035 act.sa_handler = sig_int;
2036 act.sa_flags = SA_RESTART;
2037 sigaction(SIGINT, &act, NULL);
2040 static int fio_server(void)
2042 struct sk_out *sk_out;
2045 dprint(FD_NET, "starting server\n");
2047 if (fio_handle_server_arg())
2050 sk = fio_init_server_connection();
2056 if (pthread_key_create(&sk_out_key, NULL))
2057 log_err("fio: can't create sk_out backend key\n");
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);
2064 sk_out_assign(sk_out);
2066 ret = accept_loop(sk_out, sk);
2070 if (fio_server_arg) {
2071 free(fio_server_arg);
2072 fio_server_arg = NULL;
2082 void fio_server_got_signal(int signal)
2084 struct sk_out *sk_out = pthread_getspecific(sk_out_key);
2088 if (signal == SIGPIPE)
2091 log_info("\nfio: terminating on signal %d\n", signal);
2096 static int check_existing_pidfile(const char *pidfile)
2103 if (stat(pidfile, &sb))
2106 f = fopen(pidfile, "r");
2110 if (fread(buf, sb.st_size, 1, f) <= 0) {
2117 if (kill(pid, SIGCONT) < 0)
2118 return errno != ESRCH;
2123 static int write_pid(pid_t pid, const char *pidfile)
2127 fpid = fopen(pidfile, "w");
2129 log_err("fio: failed opening pid file %s\n", pidfile);
2133 fprintf(fpid, "%u\n", (unsigned int) pid);
2139 * If pidfile is specified, background us.
2141 int fio_start_server(char *pidfile)
2148 WSAStartup(MAKEWORD(2, 2), &wsd);
2152 return fio_server();
2154 if (check_existing_pidfile(pidfile)) {
2155 log_err("fio: pidfile %s exists and server appears alive\n",
2163 log_err("fio: failed server fork: %s", strerror(errno));
2167 ret = write_pid(pid, pidfile);
2173 openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER);
2175 close(STDIN_FILENO);
2176 close(STDOUT_FILENO);
2177 close(STDERR_FILENO);
2189 void fio_server_set_arg(const char *arg)
2191 fio_server_arg = strdup(arg);