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_free(struct sk_out *sk_out)
139 fio_mutex_remove(sk_out->lock);
140 fio_mutex_remove(sk_out->wait);
144 static int __sk_out_drop(struct sk_out *sk_out)
150 refs = --sk_out->refs;
162 void sk_out_drop(void)
164 struct sk_out *sk_out;
166 sk_out = pthread_getspecific(sk_out_key);
167 if (!__sk_out_drop(sk_out))
168 pthread_setspecific(sk_out_key, NULL);
171 const char *fio_server_op(unsigned int op)
175 if (op < FIO_NET_CMD_NR)
176 return fio_server_ops[op];
178 sprintf(buf, "UNKNOWN/%d", op);
182 static ssize_t iov_total_len(const struct iovec *iov, int count)
194 static int fio_sendv_data(int sk, struct iovec *iov, int count)
196 ssize_t total_len = iov_total_len(iov, count);
200 ret = writev(sk, iov, count);
207 if (ret >= iov->iov_len) {
212 iov->iov_base += ret;
218 else if (errno == EAGAIN || errno == EINTR)
222 } while (!exit_backend);
230 int fio_send_data(int sk, const void *p, unsigned int len)
232 struct iovec iov = { .iov_base = (void *) p, .iov_len = len };
234 assert(len <= sizeof(struct fio_net_cmd) + FIO_SERVER_MAX_FRAGMENT_PDU);
236 return fio_sendv_data(sk, &iov, 1);
239 int fio_recv_data(int sk, void *p, unsigned int len)
242 int ret = recv(sk, p, len, MSG_WAITALL);
252 else if (errno == EAGAIN || errno == EINTR)
256 } while (!exit_backend);
264 static int verify_convert_cmd(struct fio_net_cmd *cmd)
268 cmd->cmd_crc16 = le16_to_cpu(cmd->cmd_crc16);
269 cmd->pdu_crc16 = le16_to_cpu(cmd->pdu_crc16);
271 crc = fio_crc16(cmd, FIO_NET_CMD_CRC_SZ);
272 if (crc != cmd->cmd_crc16) {
273 log_err("fio: server bad crc on command (got %x, wanted %x)\n",
274 cmd->cmd_crc16, crc);
278 cmd->version = le16_to_cpu(cmd->version);
279 cmd->opcode = le16_to_cpu(cmd->opcode);
280 cmd->flags = le32_to_cpu(cmd->flags);
281 cmd->tag = le64_to_cpu(cmd->tag);
282 cmd->pdu_len = le32_to_cpu(cmd->pdu_len);
284 switch (cmd->version) {
288 log_err("fio: bad server cmd version %d\n", cmd->version);
292 if (cmd->pdu_len > FIO_SERVER_MAX_FRAGMENT_PDU) {
293 log_err("fio: command payload too large: %u\n", cmd->pdu_len);
301 * Read (and defragment, if necessary) incoming commands
303 struct fio_net_cmd *fio_net_recv_cmd(int sk)
305 struct fio_net_cmd cmd, *tmp, *cmdret = NULL;
306 size_t cmd_size = 0, pdu_offset = 0;
312 ret = fio_recv_data(sk, &cmd, sizeof(cmd));
316 /* We have a command, verify it and swap if need be */
317 ret = verify_convert_cmd(&cmd);
322 /* if this is text, add room for \0 at the end */
323 cmd_size = sizeof(cmd) + cmd.pdu_len + 1;
326 cmd_size += cmd.pdu_len;
328 if (cmd_size / 1024 > FIO_SERVER_MAX_CMD_MB * 1024) {
329 log_err("fio: cmd+pdu too large (%llu)\n", (unsigned long long) cmd_size);
334 tmp = realloc(cmdret, cmd_size);
336 log_err("fio: server failed allocating cmd\n");
343 memcpy(cmdret, &cmd, sizeof(cmd));
344 else if (cmdret->opcode != cmd.opcode) {
345 log_err("fio: fragment opcode mismatch (%d != %d)\n",
346 cmdret->opcode, cmd.opcode);
354 /* There's payload, get it */
355 pdu = (void *) cmdret->payload + pdu_offset;
356 ret = fio_recv_data(sk, pdu, cmd.pdu_len);
360 /* Verify payload crc */
361 crc = fio_crc16(pdu, cmd.pdu_len);
362 if (crc != cmd.pdu_crc16) {
363 log_err("fio: server bad crc on payload ");
364 log_err("(got %x, wanted %x)\n", cmd.pdu_crc16, crc);
369 pdu_offset += cmd.pdu_len;
371 cmdret->pdu_len += cmd.pdu_len;
373 } while (cmd.flags & FIO_NET_CMD_F_MORE);
379 /* zero-terminate text input */
380 if (cmdret->pdu_len) {
381 if (cmdret->opcode == FIO_NET_CMD_TEXT) {
382 struct cmd_text_pdu *__pdu = (struct cmd_text_pdu *) cmdret->payload;
383 char *buf = (char *) __pdu->buf;
385 buf[__pdu->buf_len] = '\0';
386 } else if (cmdret->opcode == FIO_NET_CMD_JOB) {
387 struct cmd_job_pdu *__pdu = (struct cmd_job_pdu *) cmdret->payload;
388 char *buf = (char *) __pdu->buf;
389 int len = le32_to_cpu(__pdu->buf_len);
395 /* frag flag is internal */
396 cmdret->flags &= ~FIO_NET_CMD_F_MORE;
402 static void add_reply(uint64_t tag, struct flist_head *list)
404 struct fio_net_cmd_reply *reply;
406 reply = (struct fio_net_cmd_reply *) (uintptr_t) tag;
407 flist_add_tail(&reply->list, list);
410 static uint64_t alloc_reply(uint64_t tag, uint16_t opcode)
412 struct fio_net_cmd_reply *reply;
414 reply = calloc(1, sizeof(*reply));
415 INIT_FLIST_HEAD(&reply->list);
416 fio_gettime(&reply->tv, NULL);
417 reply->saved_tag = tag;
418 reply->opcode = opcode;
420 return (uintptr_t) reply;
423 static void free_reply(uint64_t tag)
425 struct fio_net_cmd_reply *reply;
427 reply = (struct fio_net_cmd_reply *) (uintptr_t) tag;
431 void fio_net_cmd_crc_pdu(struct fio_net_cmd *cmd, const void *pdu)
435 cmd->cmd_crc16 = __cpu_to_le16(fio_crc16(cmd, FIO_NET_CMD_CRC_SZ));
437 pdu_len = le32_to_cpu(cmd->pdu_len);
438 cmd->pdu_crc16 = __cpu_to_le16(fio_crc16(pdu, pdu_len));
441 void fio_net_cmd_crc(struct fio_net_cmd *cmd)
443 fio_net_cmd_crc_pdu(cmd, cmd->payload);
446 int fio_net_send_cmd(int fd, uint16_t opcode, const void *buf, off_t size,
447 uint64_t *tagptr, struct flist_head *list)
449 struct fio_net_cmd *cmd = NULL;
450 size_t this_len, cur_len = 0;
456 tag = *tagptr = alloc_reply(*tagptr, opcode);
458 tag = tagptr ? *tagptr : 0;
462 if (this_len > FIO_SERVER_MAX_FRAGMENT_PDU)
463 this_len = FIO_SERVER_MAX_FRAGMENT_PDU;
465 if (!cmd || cur_len < sizeof(*cmd) + this_len) {
469 cur_len = sizeof(*cmd) + this_len;
470 cmd = malloc(cur_len);
473 fio_init_net_cmd(cmd, opcode, buf, this_len, tag);
476 cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE);
478 fio_net_cmd_crc(cmd);
480 ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len);
483 } while (!ret && size);
489 add_reply(tag, list);
498 struct sk_entry *fio_net_prep_cmd(uint16_t opcode, void *buf, off_t size,
499 uint64_t *tagptr, int flags)
501 struct sk_entry *entry;
503 entry = smalloc(sizeof(*entry));
504 INIT_FLIST_HEAD(&entry->next);
505 entry->opcode = opcode;
506 if (flags & SK_F_COPY) {
507 entry->buf = smalloc(size);
508 memcpy(entry->buf, buf, size);
512 entry->tagptr = tagptr;
513 entry->flags = flags;
518 static void fio_net_queue_entry(struct sk_entry *entry)
520 struct sk_out *sk_out = pthread_getspecific(sk_out_key);
523 flist_add_tail(&entry->list, &sk_out->list);
526 fio_mutex_up(sk_out->wait);
529 static int fio_net_queue_cmd(uint16_t opcode, void *buf, off_t size,
530 uint64_t *tagptr, int flags)
532 struct sk_entry *entry;
534 entry = fio_net_prep_cmd(opcode, buf, size, tagptr, flags);
535 fio_net_queue_entry(entry);
539 static int fio_net_send_simple_stack_cmd(int sk, uint16_t opcode, uint64_t tag)
541 struct fio_net_cmd cmd;
543 fio_init_net_cmd(&cmd, opcode, NULL, 0, tag);
544 fio_net_cmd_crc(&cmd);
546 return fio_send_data(sk, &cmd, sizeof(cmd));
550 * If 'list' is non-NULL, then allocate and store the sent command for
551 * later verification.
553 int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t tag,
554 struct flist_head *list)
559 tag = alloc_reply(tag, opcode);
561 ret = fio_net_send_simple_stack_cmd(sk, opcode, tag);
570 add_reply(tag, list);
575 static int fio_net_queue_quit(void)
577 dprint(FD_NET, "server: sending quit\n");
579 return fio_net_queue_cmd(FIO_NET_CMD_QUIT, NULL, 0, 0, SK_F_SIMPLE);
582 int fio_net_send_quit(int sk)
584 dprint(FD_NET, "server: sending quit\n");
586 return fio_net_send_simple_cmd(sk, FIO_NET_CMD_QUIT, 0, NULL);
589 static int fio_net_send_ack(struct fio_net_cmd *cmd, int error, int signal)
591 struct cmd_end_pdu epdu;
597 epdu.error = __cpu_to_le32(error);
598 epdu.signal = __cpu_to_le32(signal);
599 return fio_net_queue_cmd(FIO_NET_CMD_STOP, &epdu, sizeof(epdu), &tag, SK_F_COPY);
602 static int fio_net_queue_stop(int error, int signal)
604 dprint(FD_NET, "server: sending stop (%d, %d)\n", error, signal);
605 return fio_net_send_ack(NULL, error, signal);
608 static void fio_server_add_fork_item(pid_t pid, struct flist_head *list)
610 struct fio_fork_item *ffi;
612 ffi = malloc(sizeof(*ffi));
617 flist_add_tail(&ffi->list, list);
620 static void fio_server_add_conn_pid(struct flist_head *conn_list, pid_t pid)
622 dprint(FD_NET, "server: forked off connection job (pid=%u)\n", (int) pid);
623 fio_server_add_fork_item(pid, conn_list);
626 static void fio_server_add_job_pid(struct flist_head *job_list, pid_t pid)
628 dprint(FD_NET, "server: forked off job job (pid=%u)\n", (int) pid);
629 fio_server_add_fork_item(pid, job_list);
632 static void fio_server_check_fork_item(struct fio_fork_item *ffi)
636 ret = waitpid(ffi->pid, &status, WNOHANG);
638 if (errno == ECHILD) {
639 log_err("fio: connection pid %u disappeared\n", (int) ffi->pid);
642 log_err("fio: waitpid: %s\n", strerror(errno));
643 } else if (ret == ffi->pid) {
644 if (WIFSIGNALED(status)) {
645 ffi->signal = WTERMSIG(status);
648 if (WIFEXITED(status)) {
649 if (WEXITSTATUS(status))
650 ffi->exitval = WEXITSTATUS(status);
656 static void fio_server_fork_item_done(struct fio_fork_item *ffi, bool stop)
658 dprint(FD_NET, "pid %u exited, sig=%u, exitval=%d\n", (int) ffi->pid, ffi->signal, ffi->exitval);
661 * Fold STOP and QUIT...
664 fio_net_queue_stop(ffi->exitval, ffi->signal);
665 fio_net_queue_quit();
668 flist_del(&ffi->list);
672 static void fio_server_check_fork_items(struct flist_head *list, bool stop)
674 struct flist_head *entry, *tmp;
675 struct fio_fork_item *ffi;
677 flist_for_each_safe(entry, tmp, list) {
678 ffi = flist_entry(entry, struct fio_fork_item, list);
680 fio_server_check_fork_item(ffi);
683 fio_server_fork_item_done(ffi, stop);
687 static void fio_server_check_jobs(struct flist_head *job_list)
689 fio_server_check_fork_items(job_list, true);
692 static void fio_server_check_conns(struct flist_head *conn_list)
694 fio_server_check_fork_items(conn_list, false);
697 static int handle_load_file_cmd(struct fio_net_cmd *cmd)
699 struct cmd_load_file_pdu *pdu = (struct cmd_load_file_pdu *) cmd->payload;
700 void *file_name = pdu->file;
701 struct cmd_start_pdu spdu;
703 dprint(FD_NET, "server: loading local file %s\n", (char *) file_name);
705 pdu->name_len = le16_to_cpu(pdu->name_len);
706 pdu->client_type = le16_to_cpu(pdu->client_type);
708 if (parse_jobs_ini(file_name, 0, 0, pdu->client_type)) {
709 fio_net_queue_quit();
713 spdu.jobs = cpu_to_le32(thread_number);
714 spdu.stat_outputs = cpu_to_le32(stat_number);
715 fio_net_queue_cmd(FIO_NET_CMD_START, &spdu, sizeof(spdu), NULL, SK_F_COPY);
719 static int handle_run_cmd(struct sk_out *sk_out, struct flist_head *job_list,
720 struct fio_net_cmd *cmd)
730 fio_server_add_job_pid(job_list, pid);
734 ret = fio_backend(sk_out);
739 static int handle_job_cmd(struct fio_net_cmd *cmd)
741 struct cmd_job_pdu *pdu = (struct cmd_job_pdu *) cmd->payload;
742 void *buf = pdu->buf;
743 struct cmd_start_pdu spdu;
745 pdu->buf_len = le32_to_cpu(pdu->buf_len);
746 pdu->client_type = le32_to_cpu(pdu->client_type);
748 if (parse_jobs_ini(buf, 1, 0, pdu->client_type)) {
749 fio_net_queue_quit();
753 spdu.jobs = cpu_to_le32(thread_number);
754 spdu.stat_outputs = cpu_to_le32(stat_number);
756 fio_net_queue_cmd(FIO_NET_CMD_START, &spdu, sizeof(spdu), NULL, SK_F_COPY);
760 static int handle_jobline_cmd(struct fio_net_cmd *cmd)
762 void *pdu = cmd->payload;
763 struct cmd_single_line_pdu *cslp;
764 struct cmd_line_pdu *clp;
765 unsigned long offset;
766 struct cmd_start_pdu spdu;
771 clp->lines = le16_to_cpu(clp->lines);
772 clp->client_type = le16_to_cpu(clp->client_type);
773 argv = malloc(clp->lines * sizeof(char *));
774 offset = sizeof(*clp);
776 dprint(FD_NET, "server: %d command line args\n", clp->lines);
778 for (i = 0; i < clp->lines; i++) {
780 argv[i] = (char *) cslp->text;
782 offset += sizeof(*cslp) + le16_to_cpu(cslp->len);
783 dprint(FD_NET, "server: %d: %s\n", i, argv[i]);
786 if (parse_cmd_line(clp->lines, argv, clp->client_type)) {
787 fio_net_queue_quit();
794 spdu.jobs = cpu_to_le32(thread_number);
795 spdu.stat_outputs = cpu_to_le32(stat_number);
797 fio_net_queue_cmd(FIO_NET_CMD_START, &spdu, sizeof(spdu), NULL, SK_F_COPY);
801 static int handle_probe_cmd(struct fio_net_cmd *cmd)
803 struct cmd_client_probe_pdu *pdu = (struct cmd_client_probe_pdu *) cmd->payload;
804 struct cmd_probe_reply_pdu probe;
805 uint64_t tag = cmd->tag;
807 dprint(FD_NET, "server: sending probe reply\n");
809 strcpy(me, (char *) pdu->server);
811 memset(&probe, 0, sizeof(probe));
812 gethostname((char *) probe.hostname, sizeof(probe.hostname));
813 #ifdef CONFIG_BIG_ENDIAN
816 strncpy((char *) probe.fio_version, fio_version_string, sizeof(probe.fio_version));
819 probe.arch = FIO_ARCH;
820 probe.bpp = sizeof(void *);
821 probe.cpus = __cpu_to_le32(cpus_online());
824 * If the client supports compression and we do too, then enable it
826 if (has_zlib && le64_to_cpu(pdu->flags) & FIO_PROBE_FLAG_ZLIB) {
827 probe.flags = __cpu_to_le64(FIO_PROBE_FLAG_ZLIB);
834 return fio_net_queue_cmd(FIO_NET_CMD_PROBE, &probe, sizeof(probe), &tag, SK_F_COPY);
837 static int handle_send_eta_cmd(struct fio_net_cmd *cmd)
840 uint64_t tag = cmd->tag;
844 dprint(FD_NET, "server sending status\n");
847 * Fake ETA return if we don't have a local one, otherwise the client
848 * will end up timing out waiting for a response to the ETA request
850 je = get_jobs_eta(true, &size);
853 je = calloc(1, size);
855 je->nr_running = cpu_to_le32(je->nr_running);
856 je->nr_ramp = cpu_to_le32(je->nr_ramp);
857 je->nr_pending = cpu_to_le32(je->nr_pending);
858 je->nr_setting_up = cpu_to_le32(je->nr_setting_up);
859 je->files_open = cpu_to_le32(je->files_open);
861 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
862 je->m_rate[i] = cpu_to_le32(je->m_rate[i]);
863 je->t_rate[i] = cpu_to_le32(je->t_rate[i]);
864 je->m_iops[i] = cpu_to_le32(je->m_iops[i]);
865 je->t_iops[i] = cpu_to_le32(je->t_iops[i]);
866 je->rate[i] = cpu_to_le32(je->rate[i]);
867 je->iops[i] = cpu_to_le32(je->iops[i]);
870 je->elapsed_sec = cpu_to_le64(je->elapsed_sec);
871 je->eta_sec = cpu_to_le64(je->eta_sec);
872 je->nr_threads = cpu_to_le32(je->nr_threads);
873 je->is_pow2 = cpu_to_le32(je->is_pow2);
874 je->unit_base = cpu_to_le32(je->unit_base);
877 fio_net_queue_cmd(FIO_NET_CMD_ETA, je, size, &tag, SK_F_FREE);
881 static int send_update_job_reply(uint64_t __tag, int error)
883 uint64_t tag = __tag;
886 pdu_error = __cpu_to_le32(error);
887 return fio_net_queue_cmd(FIO_NET_CMD_UPDATE_JOB, &pdu_error, sizeof(pdu_error), &tag, SK_F_COPY);
890 static int handle_update_job_cmd(struct fio_net_cmd *cmd)
892 struct cmd_add_job_pdu *pdu = (struct cmd_add_job_pdu *) cmd->payload;
893 struct thread_data *td;
896 tnumber = le32_to_cpu(pdu->thread_number);
898 dprint(FD_NET, "server: updating options for job %u\n", tnumber);
900 if (!tnumber || tnumber > thread_number) {
901 send_update_job_reply(cmd->tag, ENODEV);
905 td = &threads[tnumber - 1];
906 convert_thread_options_to_cpu(&td->o, &pdu->top);
907 send_update_job_reply(cmd->tag, 0);
911 static int handle_trigger_cmd(struct fio_net_cmd *cmd)
913 struct cmd_vtrigger_pdu *pdu = (struct cmd_vtrigger_pdu *) cmd->payload;
914 char *buf = (char *) pdu->cmd;
915 struct all_io_list *rep;
918 pdu->len = le16_to_cpu(pdu->len);
919 buf[pdu->len] = '\0';
921 rep = get_all_io_list(IO_LIST_ALL, &sz);
923 struct all_io_list state;
925 state.threads = cpu_to_le64((uint64_t) 0);
926 fio_net_queue_cmd(FIO_NET_CMD_VTRIGGER, &state, sizeof(state), NULL, SK_F_COPY);
928 fio_net_queue_cmd(FIO_NET_CMD_VTRIGGER, rep, sz, NULL, SK_F_FREE);
934 static int handle_command(struct sk_out *sk_out, struct flist_head *job_list,
935 struct fio_net_cmd *cmd)
939 dprint(FD_NET, "server: got op [%s], pdu=%u, tag=%llx\n",
940 fio_server_op(cmd->opcode), cmd->pdu_len,
941 (unsigned long long) cmd->tag);
943 switch (cmd->opcode) {
944 case FIO_NET_CMD_QUIT:
945 fio_terminate_threads(TERMINATE_ALL);
948 case FIO_NET_CMD_EXIT:
951 case FIO_NET_CMD_LOAD_FILE:
952 ret = handle_load_file_cmd(cmd);
954 case FIO_NET_CMD_JOB:
955 ret = handle_job_cmd(cmd);
957 case FIO_NET_CMD_JOBLINE:
958 ret = handle_jobline_cmd(cmd);
960 case FIO_NET_CMD_PROBE:
961 ret = handle_probe_cmd(cmd);
963 case FIO_NET_CMD_SEND_ETA:
964 ret = handle_send_eta_cmd(cmd);
966 case FIO_NET_CMD_RUN:
967 ret = handle_run_cmd(sk_out, job_list, cmd);
969 case FIO_NET_CMD_UPDATE_JOB:
970 ret = handle_update_job_cmd(cmd);
972 case FIO_NET_CMD_VTRIGGER:
973 ret = handle_trigger_cmd(cmd);
975 case FIO_NET_CMD_SENDFILE: {
976 struct cmd_sendfile_reply *in;
977 struct cmd_reply *rep;
979 rep = (struct cmd_reply *) (uintptr_t) cmd->tag;
981 in = (struct cmd_sendfile_reply *) cmd->payload;
982 in->size = le32_to_cpu(in->size);
983 in->error = le32_to_cpu(in->error);
986 rep->error = in->error;
989 rep->data = smalloc(in->size);
994 rep->size = in->size;
995 memcpy(rep->data, in->data, in->size);
998 fio_mutex_up(&rep->lock);
1002 log_err("fio: unknown opcode: %s\n", fio_server_op(cmd->opcode));
1010 * Send a command with a separate PDU, not inlined in the command
1012 static int fio_send_cmd_ext_pdu(int sk, uint16_t opcode, const void *buf,
1013 off_t size, uint64_t tag, uint32_t flags)
1015 struct fio_net_cmd cmd;
1016 struct iovec iov[2];
1018 iov[0].iov_base = (void *) &cmd;
1019 iov[0].iov_len = sizeof(cmd);
1020 iov[1].iov_base = (void *) buf;
1021 iov[1].iov_len = size;
1023 __fio_init_net_cmd(&cmd, opcode, size, tag);
1024 cmd.flags = __cpu_to_le32(flags);
1025 fio_net_cmd_crc_pdu(&cmd, buf);
1027 return fio_sendv_data(sk, iov, 2);
1030 static void finish_entry(struct sk_entry *entry)
1032 if (entry->flags & SK_F_FREE)
1034 else if (entry->flags & SK_F_COPY)
1040 static void entry_set_flags_tag(struct sk_entry *entry, struct flist_head *list,
1041 unsigned int *flags, uint64_t *tag)
1043 if (!flist_empty(list))
1044 *flags = FIO_NET_CMD_F_MORE;
1049 *tag = *entry->tagptr;
1054 static int send_vec_entry(struct sk_out *sk_out, struct sk_entry *first)
1060 entry_set_flags_tag(first, &first->next, &flags, &tag);
1062 ret = fio_send_cmd_ext_pdu(sk_out->sk, first->opcode, first->buf, first->size, tag, flags);
1064 while (!flist_empty(&first->next)) {
1065 struct sk_entry *next;
1067 next = flist_first_entry(&first->next, struct sk_entry, list);
1068 flist_del_init(&next->list);
1070 entry_set_flags_tag(next, &first->next, &flags, &tag);
1072 ret += fio_send_cmd_ext_pdu(sk_out->sk, next->opcode, next->buf, next->size, tag, flags);
1079 static int handle_sk_entry(struct sk_out *sk_out, struct sk_entry *entry)
1083 if (entry->flags & SK_F_VEC)
1084 ret = send_vec_entry(sk_out, entry);
1085 if (entry->flags & SK_F_SIMPLE) {
1089 tag = *entry->tagptr;
1091 ret = fio_net_send_simple_cmd(sk_out->sk, entry->opcode, tag, NULL);
1093 ret = fio_net_send_cmd(sk_out->sk, entry->opcode, entry->buf, entry->size, entry->tagptr, NULL);
1096 log_err("fio: failed handling cmd %s\n", fio_server_op(entry->opcode));
1098 finish_entry(entry);
1102 static int handle_xmits(struct sk_out *sk_out)
1104 struct sk_entry *entry;
1109 if (flist_empty(&sk_out->list)) {
1114 flist_splice_init(&sk_out->list, &list);
1117 while (!flist_empty(&list)) {
1118 entry = flist_entry(list.next, struct sk_entry, list);
1119 flist_del(&entry->list);
1120 ret += handle_sk_entry(sk_out, entry);
1126 static int handle_connection(struct sk_out *sk_out)
1128 struct fio_net_cmd *cmd = NULL;
1129 FLIST_HEAD(job_list);
1135 while (!exit_backend) {
1136 struct pollfd pfd = {
1145 if (!flist_empty(&job_list))
1148 handle_xmits(sk_out);
1150 ret = poll(&pfd, 1, 0);
1154 log_err("fio: poll: %s\n", strerror(errno));
1157 fio_server_check_jobs(&job_list);
1158 fio_mutex_down_timeout(sk_out->wait, timeout);
1162 if (pfd.revents & POLLIN)
1164 if (pfd.revents & (POLLERR|POLLHUP)) {
1168 } while (!exit_backend);
1170 fio_server_check_jobs(&job_list);
1175 cmd = fio_net_recv_cmd(sk_out->sk);
1181 ret = handle_command(sk_out, &job_list, cmd);
1192 handle_xmits(sk_out);
1195 __sk_out_drop(sk_out);
1199 /* get the address on this host bound by the input socket,
1200 * whether it is ipv6 or ipv4 */
1202 int get_my_addr_str(int sk)
1204 struct sockaddr_in6 myaddr6 = { 0, };
1205 struct sockaddr_in myaddr4 = { 0, };
1206 struct sockaddr *sockaddr_p;
1212 len = sizeof(myaddr6);
1213 sockaddr_p = (struct sockaddr * )&myaddr6;
1214 net_addr = (char * )&myaddr6.sin6_addr;
1216 len = sizeof(myaddr4);
1217 sockaddr_p = (struct sockaddr * )&myaddr4;
1218 net_addr = (char * )&myaddr4.sin_addr;
1221 ret = getsockname(sk, sockaddr_p, &len);
1223 log_err("fio: getsockaddr: %s\n", strerror(errno));
1227 if (!inet_ntop(use_ipv6?AF_INET6:AF_INET, net_addr, client_sockaddr_str, INET6_ADDRSTRLEN - 1)) {
1228 log_err("inet_ntop: failed to convert addr to string\n");
1232 dprint(FD_NET, "fio server bound to addr %s\n", client_sockaddr_str);
1236 static int accept_loop(struct sk_out *sk_out, int listen_sk)
1238 struct sockaddr_in addr;
1239 struct sockaddr_in6 addr6;
1240 socklen_t len = use_ipv6 ? sizeof(addr6) : sizeof(addr);
1242 int ret = 0, sk, exitval = 0;
1243 FLIST_HEAD(conn_list);
1245 dprint(FD_NET, "server enter accept loop\n");
1247 fio_set_fd_nonblocking(listen_sk, "server");
1249 while (!exit_backend) {
1255 pfd.events = POLLIN;
1259 if (!flist_empty(&conn_list))
1262 ret = poll(&pfd, 1, timeout);
1266 log_err("fio: poll: %s\n", strerror(errno));
1269 fio_server_check_conns(&conn_list);
1273 if (pfd.revents & POLLIN)
1275 } while (!exit_backend);
1277 fio_server_check_conns(&conn_list);
1279 if (exit_backend || ret < 0)
1283 sk = accept(listen_sk, (struct sockaddr *) &addr6, &len);
1285 sk = accept(listen_sk, (struct sockaddr *) &addr, &len);
1288 log_err("fio: accept: %s\n", strerror(errno));
1293 from = inet_ntop(AF_INET6, (struct sockaddr *) &addr6.sin6_addr, buf, sizeof(buf));
1295 from = inet_ntop(AF_INET, (struct sockaddr *) &addr.sin_addr, buf, sizeof(buf));
1297 dprint(FD_NET, "server: connect from %s\n", from);
1299 sk_out = smalloc(sizeof(*sk_out));
1301 INIT_FLIST_HEAD(&sk_out->list);
1302 sk_out->lock = fio_mutex_init(FIO_MUTEX_UNLOCKED);
1303 sk_out->wait = fio_mutex_init(FIO_MUTEX_LOCKED);
1308 fio_server_add_conn_pid(&conn_list, pid);
1313 get_my_addr_str(sk); /* if error, it's already logged, non-fatal */
1314 sk_out_assign(sk_out);
1315 handle_connection(sk_out);
1321 int fio_server_text_output(int level, const char *buf, size_t len)
1323 struct sk_out *sk_out = pthread_getspecific(sk_out_key);
1324 struct cmd_text_pdu *pdu;
1328 if (!sk_out || sk_out->sk == -1)
1331 tlen = sizeof(*pdu) + len;
1334 pdu->level = __cpu_to_le32(level);
1335 pdu->buf_len = __cpu_to_le32(len);
1337 gettimeofday(&tv, NULL);
1338 pdu->log_sec = __cpu_to_le64(tv.tv_sec);
1339 pdu->log_usec = __cpu_to_le64(tv.tv_usec);
1341 memcpy(pdu->buf, buf, len);
1343 fio_net_queue_cmd(FIO_NET_CMD_TEXT, pdu, tlen, NULL, SK_F_COPY);
1348 static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
1350 dst->max_val = cpu_to_le64(src->max_val);
1351 dst->min_val = cpu_to_le64(src->min_val);
1352 dst->samples = cpu_to_le64(src->samples);
1355 * Encode to IEEE 754 for network transfer
1357 dst->mean.u.i = cpu_to_le64(fio_double_to_uint64(src->mean.u.f));
1358 dst->S.u.i = cpu_to_le64(fio_double_to_uint64(src->S.u.f));
1361 static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
1365 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1366 dst->max_run[i] = cpu_to_le64(src->max_run[i]);
1367 dst->min_run[i] = cpu_to_le64(src->min_run[i]);
1368 dst->max_bw[i] = cpu_to_le64(src->max_bw[i]);
1369 dst->min_bw[i] = cpu_to_le64(src->min_bw[i]);
1370 dst->io_kb[i] = cpu_to_le64(src->io_kb[i]);
1371 dst->agg[i] = cpu_to_le64(src->agg[i]);
1374 dst->kb_base = cpu_to_le32(src->kb_base);
1375 dst->unit_base = cpu_to_le32(src->unit_base);
1376 dst->groupid = cpu_to_le32(src->groupid);
1377 dst->unified_rw_rep = cpu_to_le32(src->unified_rw_rep);
1381 * Send a CMD_TS, which packs struct thread_stat and group_run_stats
1382 * into a single payload.
1384 void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs)
1386 struct cmd_ts_pdu p;
1389 dprint(FD_NET, "server sending end stats\n");
1391 memset(&p, 0, sizeof(p));
1393 strncpy(p.ts.name, ts->name, FIO_JOBNAME_SIZE - 1);
1394 strncpy(p.ts.verror, ts->verror, FIO_VERROR_SIZE - 1);
1395 strncpy(p.ts.description, ts->description, FIO_JOBDESC_SIZE - 1);
1397 p.ts.error = cpu_to_le32(ts->error);
1398 p.ts.thread_number = cpu_to_le32(ts->thread_number);
1399 p.ts.groupid = cpu_to_le32(ts->groupid);
1400 p.ts.pid = cpu_to_le32(ts->pid);
1401 p.ts.members = cpu_to_le32(ts->members);
1402 p.ts.unified_rw_rep = cpu_to_le32(ts->unified_rw_rep);
1404 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1405 convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]);
1406 convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]);
1407 convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]);
1408 convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]);
1411 p.ts.usr_time = cpu_to_le64(ts->usr_time);
1412 p.ts.sys_time = cpu_to_le64(ts->sys_time);
1413 p.ts.ctx = cpu_to_le64(ts->ctx);
1414 p.ts.minf = cpu_to_le64(ts->minf);
1415 p.ts.majf = cpu_to_le64(ts->majf);
1416 p.ts.clat_percentiles = cpu_to_le64(ts->clat_percentiles);
1417 p.ts.percentile_precision = cpu_to_le64(ts->percentile_precision);
1419 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
1420 fio_fp64_t *src = &ts->percentile_list[i];
1421 fio_fp64_t *dst = &p.ts.percentile_list[i];
1423 dst->u.i = cpu_to_le64(fio_double_to_uint64(src->u.f));
1426 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
1427 p.ts.io_u_map[i] = cpu_to_le32(ts->io_u_map[i]);
1428 p.ts.io_u_submit[i] = cpu_to_le32(ts->io_u_submit[i]);
1429 p.ts.io_u_complete[i] = cpu_to_le32(ts->io_u_complete[i]);
1432 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
1433 p.ts.io_u_lat_u[i] = cpu_to_le32(ts->io_u_lat_u[i]);
1434 p.ts.io_u_lat_m[i] = cpu_to_le32(ts->io_u_lat_m[i]);
1437 for (i = 0; i < DDIR_RWDIR_CNT; i++)
1438 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
1439 p.ts.io_u_plat[i][j] = cpu_to_le32(ts->io_u_plat[i][j]);
1441 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1442 p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]);
1443 p.ts.short_io_u[i] = cpu_to_le64(ts->short_io_u[i]);
1444 p.ts.drop_io_u[i] = cpu_to_le64(ts->drop_io_u[i]);
1447 p.ts.total_submit = cpu_to_le64(ts->total_submit);
1448 p.ts.total_complete = cpu_to_le64(ts->total_complete);
1450 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1451 p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]);
1452 p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]);
1455 p.ts.total_run_time = cpu_to_le64(ts->total_run_time);
1456 p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error);
1457 p.ts.total_err_count = cpu_to_le64(ts->total_err_count);
1458 p.ts.first_error = cpu_to_le32(ts->first_error);
1459 p.ts.kb_base = cpu_to_le32(ts->kb_base);
1460 p.ts.unit_base = cpu_to_le32(ts->unit_base);
1462 p.ts.latency_depth = cpu_to_le32(ts->latency_depth);
1463 p.ts.latency_target = cpu_to_le64(ts->latency_target);
1464 p.ts.latency_window = cpu_to_le64(ts->latency_window);
1465 p.ts.latency_percentile.u.i = cpu_to_le64(fio_double_to_uint64(ts->latency_percentile.u.f));
1467 p.ts.nr_block_infos = le64_to_cpu(ts->nr_block_infos);
1468 for (i = 0; i < p.ts.nr_block_infos; i++)
1469 p.ts.block_infos[i] = le32_to_cpu(ts->block_infos[i]);
1471 convert_gs(&p.rs, rs);
1473 fio_net_queue_cmd(FIO_NET_CMD_TS, &p, sizeof(p), NULL, SK_F_COPY);
1476 void fio_server_send_gs(struct group_run_stats *rs)
1478 struct group_run_stats gs;
1480 dprint(FD_NET, "server sending group run stats\n");
1482 convert_gs(&gs, rs);
1483 fio_net_queue_cmd(FIO_NET_CMD_GS, &gs, sizeof(gs), NULL, SK_F_COPY);
1486 static void convert_agg(struct disk_util_agg *dst, struct disk_util_agg *src)
1490 for (i = 0; i < 2; i++) {
1491 dst->ios[i] = cpu_to_le64(src->ios[i]);
1492 dst->merges[i] = cpu_to_le64(src->merges[i]);
1493 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
1494 dst->ticks[i] = cpu_to_le64(src->ticks[i]);
1497 dst->io_ticks = cpu_to_le64(src->io_ticks);
1498 dst->time_in_queue = cpu_to_le64(src->time_in_queue);
1499 dst->slavecount = cpu_to_le32(src->slavecount);
1500 dst->max_util.u.i = cpu_to_le64(fio_double_to_uint64(src->max_util.u.f));
1503 static void convert_dus(struct disk_util_stat *dst, struct disk_util_stat *src)
1507 dst->name[FIO_DU_NAME_SZ - 1] = '\0';
1508 strncpy((char *) dst->name, (char *) src->name, FIO_DU_NAME_SZ - 1);
1510 for (i = 0; i < 2; i++) {
1511 dst->s.ios[i] = cpu_to_le64(src->s.ios[i]);
1512 dst->s.merges[i] = cpu_to_le64(src->s.merges[i]);
1513 dst->s.sectors[i] = cpu_to_le64(src->s.sectors[i]);
1514 dst->s.ticks[i] = cpu_to_le64(src->s.ticks[i]);
1517 dst->s.io_ticks = cpu_to_le64(src->s.io_ticks);
1518 dst->s.time_in_queue = cpu_to_le64(src->s.time_in_queue);
1519 dst->s.msec = cpu_to_le64(src->s.msec);
1522 void fio_server_send_du(void)
1524 struct disk_util *du;
1525 struct flist_head *entry;
1526 struct cmd_du_pdu pdu;
1528 dprint(FD_NET, "server: sending disk_util %d\n", !flist_empty(&disk_list));
1530 memset(&pdu, 0, sizeof(pdu));
1532 flist_for_each(entry, &disk_list) {
1533 du = flist_entry(entry, struct disk_util, list);
1535 convert_dus(&pdu.dus, &du->dus);
1536 convert_agg(&pdu.agg, &du->agg);
1538 fio_net_queue_cmd(FIO_NET_CMD_DU, &pdu, sizeof(pdu), NULL, SK_F_COPY);
1542 static int fio_send_iolog_gz(struct sk_entry *first, struct io_log *log)
1546 struct sk_entry *entry;
1551 * Dirty - since the log is potentially huge, compress it into
1552 * FIO_SERVER_MAX_FRAGMENT_PDU chunks and let the receiving
1553 * side defragment it.
1555 out_pdu = malloc(FIO_SERVER_MAX_FRAGMENT_PDU);
1557 stream.zalloc = Z_NULL;
1558 stream.zfree = Z_NULL;
1559 stream.opaque = Z_NULL;
1561 if (deflateInit(&stream, Z_DEFAULT_COMPRESSION) != Z_OK) {
1566 stream.next_in = (void *) log->log;
1567 stream.avail_in = log->nr_samples * log_entry_sz(log);
1570 unsigned int this_len;
1572 stream.avail_out = FIO_SERVER_MAX_FRAGMENT_PDU;
1573 stream.next_out = out_pdu;
1574 ret = deflate(&stream, Z_FINISH);
1575 /* may be Z_OK, or Z_STREAM_END */
1579 this_len = FIO_SERVER_MAX_FRAGMENT_PDU - stream.avail_out;
1581 entry = fio_net_prep_cmd(FIO_NET_CMD_IOLOG, out_pdu, this_len,
1582 NULL, SK_F_FREE | SK_F_VEC);
1583 flist_add_tail(&entry->list, &first->next);
1584 } while (stream.avail_in);
1587 deflateEnd(&stream);
1594 int fio_send_iolog(struct thread_data *td, struct io_log *log, const char *name)
1596 struct cmd_iolog_pdu pdu;
1597 struct sk_entry *first;
1600 pdu.nr_samples = cpu_to_le64(log->nr_samples);
1601 pdu.thread_number = cpu_to_le32(td->thread_number);
1602 pdu.log_type = cpu_to_le32(log->log_type);
1603 pdu.compressed = cpu_to_le32(use_zlib);
1605 strncpy((char *) pdu.name, name, FIO_NET_NAME_MAX);
1606 pdu.name[FIO_NET_NAME_MAX - 1] = '\0';
1608 for (i = 0; i < log->nr_samples; i++) {
1609 struct io_sample *s = get_sample(log, i);
1611 s->time = cpu_to_le64(s->time);
1612 s->val = cpu_to_le64(s->val);
1613 s->__ddir = cpu_to_le32(s->__ddir);
1614 s->bs = cpu_to_le32(s->bs);
1616 if (log->log_offset) {
1617 struct io_sample_offset *so = (void *) s;
1619 so->offset = cpu_to_le64(so->offset);
1624 * Assemble header entry first
1626 first = fio_net_prep_cmd(FIO_NET_CMD_IOLOG, &pdu, sizeof(pdu), NULL, SK_F_COPY | SK_F_VEC);
1629 * Now append actual log entries. Compress if we can, otherwise just
1630 * plain text output.
1633 ret = fio_send_iolog_gz(first, log);
1635 struct sk_entry *entry;
1637 entry = fio_net_prep_cmd(FIO_NET_CMD_IOLOG, log->log,
1638 log->nr_samples * log_entry_sz(log),
1639 NULL, SK_F_FREE | SK_F_VEC);
1640 flist_add_tail(&entry->list, &first->next);
1646 void fio_server_send_add_job(struct thread_data *td)
1648 struct cmd_add_job_pdu pdu;
1650 memset(&pdu, 0, sizeof(pdu));
1651 pdu.thread_number = cpu_to_le32(td->thread_number);
1652 pdu.groupid = cpu_to_le32(td->groupid);
1653 convert_thread_options_to_net(&pdu.top, &td->o);
1655 fio_net_queue_cmd(FIO_NET_CMD_ADD_JOB, &pdu, sizeof(pdu), NULL, SK_F_COPY);
1658 void fio_server_send_start(struct thread_data *td)
1660 struct sk_out *sk_out = pthread_getspecific(sk_out_key);
1662 assert(sk_out->sk != -1);
1664 fio_net_queue_cmd(FIO_NET_CMD_SERVER_START, NULL, 0, 0, SK_F_SIMPLE);
1667 int fio_server_get_verify_state(const char *name, int threadnumber,
1668 void **datap, int *version)
1670 struct thread_io_list *s;
1671 struct cmd_sendfile out;
1672 struct cmd_reply *rep;
1676 dprint(FD_NET, "server: request verify state\n");
1678 rep = smalloc(sizeof(*rep));
1680 log_err("fio: smalloc pool too small\n");
1684 __fio_mutex_init(&rep->lock, FIO_MUTEX_LOCKED);
1688 verify_state_gen_name((char *) out.path, sizeof(out.path), name, me,
1690 tag = (uint64_t) (uintptr_t) rep;
1691 fio_net_queue_cmd(FIO_NET_CMD_SENDFILE, &out, sizeof(out), &tag, SK_F_COPY);
1694 * Wait for the backend to receive the reply
1696 if (fio_mutex_down_timeout(&rep->lock, 10000)) {
1697 log_err("fio: timed out waiting for reply\n");
1702 log_err("fio: failure on receiving state file: %s\n", strerror(rep->error));
1706 fio_net_queue_quit();
1711 * The format is verify_state_hdr, then thread_io_list. Verify
1712 * the header, and the thread_io_list checksum
1714 s = rep->data + sizeof(struct verify_state_hdr);
1715 if (verify_state_hdr(rep->data, s, version))
1719 * Don't need the header from now, copy just the thread_io_list
1721 rep->size -= sizeof(struct verify_state_hdr);
1722 data = malloc(rep->size);
1723 memcpy(data, s, rep->size);
1727 __fio_mutex_remove(&rep->lock);
1732 static int fio_init_server_ip(void)
1734 struct sockaddr *addr;
1741 sk = socket(AF_INET6, SOCK_STREAM, 0);
1743 sk = socket(AF_INET, SOCK_STREAM, 0);
1746 log_err("fio: socket: %s\n", strerror(errno));
1751 if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, (void *)&opt, sizeof(opt)) < 0) {
1752 log_err("fio: setsockopt(REUSEADDR): %s\n", strerror(errno));
1757 if (setsockopt(sk, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) {
1758 log_err("fio: setsockopt(REUSEPORT): %s\n", strerror(errno));
1765 const void *src = &saddr_in6.sin6_addr;
1767 addr = (struct sockaddr *) &saddr_in6;
1768 socklen = sizeof(saddr_in6);
1769 saddr_in6.sin6_family = AF_INET6;
1770 str = inet_ntop(AF_INET6, src, buf, sizeof(buf));
1772 const void *src = &saddr_in.sin_addr;
1774 addr = (struct sockaddr *) &saddr_in;
1775 socklen = sizeof(saddr_in);
1776 saddr_in.sin_family = AF_INET;
1777 str = inet_ntop(AF_INET, src, buf, sizeof(buf));
1780 if (bind(sk, addr, socklen) < 0) {
1781 log_err("fio: bind: %s\n", strerror(errno));
1782 log_info("fio: failed with IPv%c %s\n", use_ipv6 ? '6' : '4', str);
1790 static int fio_init_server_sock(void)
1792 struct sockaddr_un addr;
1797 sk = socket(AF_UNIX, SOCK_STREAM, 0);
1799 log_err("fio: socket: %s\n", strerror(errno));
1805 memset(&addr, 0, sizeof(addr));
1806 addr.sun_family = AF_UNIX;
1807 strncpy(addr.sun_path, bind_sock, sizeof(addr.sun_path) - 1);
1809 len = sizeof(addr.sun_family) + strlen(bind_sock) + 1;
1811 if (bind(sk, (struct sockaddr *) &addr, len) < 0) {
1812 log_err("fio: bind: %s\n", strerror(errno));
1821 static int fio_init_server_connection(void)
1826 dprint(FD_NET, "starting server\n");
1829 sk = fio_init_server_ip();
1831 sk = fio_init_server_sock();
1836 memset(bind_str, 0, sizeof(bind_str));
1845 src = &saddr_in6.sin6_addr;
1848 src = &saddr_in.sin_addr;
1851 p = (char *) inet_ntop(af, src, bind_str, sizeof(bind_str));
1853 sprintf(port, ",%u", fio_net_port);
1857 strncpy(bind_str, port, sizeof(bind_str) - 1);
1859 strncpy(bind_str, bind_sock, sizeof(bind_str) - 1);
1861 log_info("fio: server listening on %s\n", bind_str);
1863 if (listen(sk, 0) < 0) {
1864 log_err("fio: listen: %s\n", strerror(errno));
1872 int fio_server_parse_host(const char *host, int ipv6, struct in_addr *inp,
1873 struct in6_addr *inp6)
1879 ret = inet_pton(AF_INET6, host, inp6);
1881 ret = inet_pton(AF_INET, host, inp);
1884 struct addrinfo hints, *res;
1886 memset(&hints, 0, sizeof(hints));
1887 hints.ai_family = ipv6 ? AF_INET6 : AF_INET;
1888 hints.ai_socktype = SOCK_STREAM;
1890 ret = getaddrinfo(host, NULL, &hints, &res);
1892 log_err("fio: failed to resolve <%s> (%s)\n", host,
1898 memcpy(inp6, &((struct sockaddr_in6 *) res->ai_addr)->sin6_addr, sizeof(*inp6));
1900 memcpy(inp, &((struct sockaddr_in *) res->ai_addr)->sin_addr, sizeof(*inp));
1910 * Parse a host/ip/port string. Reads from 'str'.
1915 * *ptr is the host, *port is the port, inp is the destination.
1917 * *ptr is the host, *port is the port, inp6 is the dest, and *ipv6 is 1.
1918 * For local domain sockets:
1919 * *ptr is the filename, *is_sock is 1.
1921 int fio_server_parse_string(const char *str, char **ptr, int *is_sock,
1922 int *port, struct in_addr *inp,
1923 struct in6_addr *inp6, int *ipv6)
1925 const char *host = str;
1931 *port = fio_net_port;
1934 if (!strncmp(str, "sock:", 5)) {
1935 *ptr = strdup(str + 5);
1942 * Is it ip:<ip or host>:port
1944 if (!strncmp(host, "ip:", 3))
1946 else if (!strncmp(host, "ip4:", 4))
1948 else if (!strncmp(host, "ip6:", 4)) {
1951 } else if (host[0] == ':') {
1952 /* String is :port */
1955 if (!lport || lport > 65535) {
1956 log_err("fio: bad server port %u\n", lport);
1959 /* no hostname given, we are done */
1965 * If no port seen yet, check if there's a last ',' at the end
1968 portp = strchr(host, ',');
1972 lport = atoi(portp);
1973 if (!lport || lport > 65535) {
1974 log_err("fio: bad server port %u\n", lport);
1986 *ptr = strdup(host);
1988 if (fio_server_parse_host(*ptr, *ipv6, inp, inp6)) {
1995 *port = fio_net_port;
2001 * Server arg should be one of:
2003 * sock:/path/to/socket
2007 * Where sock uses unix domain sockets, and ip binds the server to
2008 * a specific interface. If no arguments are given to the server, it
2009 * uses IP and binds to 0.0.0.0.
2012 static int fio_handle_server_arg(void)
2014 int port = fio_net_port;
2015 int is_sock, ret = 0;
2017 saddr_in.sin_addr.s_addr = htonl(INADDR_ANY);
2019 if (!fio_server_arg)
2022 ret = fio_server_parse_string(fio_server_arg, &bind_sock, &is_sock,
2023 &port, &saddr_in.sin_addr,
2024 &saddr_in6.sin6_addr, &use_ipv6);
2026 if (!is_sock && bind_sock) {
2032 fio_net_port = port;
2033 saddr_in.sin_port = htons(port);
2034 saddr_in6.sin6_port = htons(port);
2038 static void sig_int(int sig)
2044 static void set_sig_handlers(void)
2046 struct sigaction act;
2048 memset(&act, 0, sizeof(act));
2049 act.sa_handler = sig_int;
2050 act.sa_flags = SA_RESTART;
2051 sigaction(SIGINT, &act, NULL);
2054 static int fio_server(void)
2056 struct sk_out *sk_out;
2059 dprint(FD_NET, "starting server\n");
2061 if (fio_handle_server_arg())
2064 sk = fio_init_server_connection();
2070 if (pthread_key_create(&sk_out_key, NULL))
2071 log_err("fio: can't create sk_out backend key\n");
2073 ret = accept_loop(sk_out, sk);
2077 if (fio_server_arg) {
2078 free(fio_server_arg);
2079 fio_server_arg = NULL;
2087 void fio_server_got_signal(int signal)
2089 struct sk_out *sk_out = pthread_getspecific(sk_out_key);
2093 if (signal == SIGPIPE)
2096 log_info("\nfio: terminating on signal %d\n", signal);
2101 static int check_existing_pidfile(const char *pidfile)
2108 if (stat(pidfile, &sb))
2111 f = fopen(pidfile, "r");
2115 if (fread(buf, sb.st_size, 1, f) <= 0) {
2122 if (kill(pid, SIGCONT) < 0)
2123 return errno != ESRCH;
2128 static int write_pid(pid_t pid, const char *pidfile)
2132 fpid = fopen(pidfile, "w");
2134 log_err("fio: failed opening pid file %s\n", pidfile);
2138 fprintf(fpid, "%u\n", (unsigned int) pid);
2144 * If pidfile is specified, background us.
2146 int fio_start_server(char *pidfile)
2153 WSAStartup(MAKEWORD(2, 2), &wsd);
2157 return fio_server();
2159 if (check_existing_pidfile(pidfile)) {
2160 log_err("fio: pidfile %s exists and server appears alive\n",
2168 log_err("fio: failed server fork: %s", strerror(errno));
2172 ret = write_pid(pid, pidfile);
2178 openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER);
2180 close(STDIN_FILENO);
2181 close(STDOUT_FILENO);
2182 close(STDERR_FILENO);
2194 void fio_server_set_arg(const char *arg)
2196 fio_server_arg = strdup(arg);