11 #include <sys/socket.h>
14 #include <netinet/in.h>
15 #include <arpa/inet.h>
23 #include "crc/crc16.h"
24 #include "lib/ieee754.h"
26 #include "fio_version.h"
28 int fio_net_port = FIO_NET_PORT;
32 static int server_fd = -1;
33 static char *fio_server_arg;
34 static char *bind_sock;
35 static struct sockaddr_in saddr_in;
36 static struct sockaddr_in6 saddr_in6;
37 static int first_cmd_check;
40 static const char *fio_server_ops[FIO_NET_CMD_NR] = {
61 const char *fio_server_op(unsigned int op)
65 if (op < FIO_NET_CMD_NR)
66 return fio_server_ops[op];
68 sprintf(buf, "UNKNOWN/%d", op);
72 static ssize_t iov_total_len(const struct iovec *iov, int count)
84 static int fio_sendv_data(int sk, struct iovec *iov, int count)
86 ssize_t total_len = iov_total_len(iov, count);
90 ret = writev(sk, iov, count);
97 if (ret >= iov->iov_len) {
102 iov->iov_base += ret;
108 else if (errno == EAGAIN || errno == EINTR)
112 } while (!exit_backend);
123 int fio_send_data(int sk, const void *p, unsigned int len)
125 struct iovec iov = { .iov_base = (void *) p, .iov_len = len };
127 assert(len <= sizeof(struct fio_net_cmd) + FIO_SERVER_MAX_FRAGMENT_PDU);
129 return fio_sendv_data(sk, &iov, 1);
132 int fio_recv_data(int sk, void *p, unsigned int len)
135 int ret = recv(sk, p, len, MSG_WAITALL);
145 else if (errno == EAGAIN || errno == EINTR)
149 } while (!exit_backend);
157 static int verify_convert_cmd(struct fio_net_cmd *cmd)
161 cmd->cmd_crc16 = le16_to_cpu(cmd->cmd_crc16);
162 cmd->pdu_crc16 = le16_to_cpu(cmd->pdu_crc16);
164 crc = fio_crc16(cmd, FIO_NET_CMD_CRC_SZ);
165 if (crc != cmd->cmd_crc16) {
166 log_err("fio: server bad crc on command (got %x, wanted %x)\n",
167 cmd->cmd_crc16, crc);
171 cmd->version = le16_to_cpu(cmd->version);
172 cmd->opcode = le16_to_cpu(cmd->opcode);
173 cmd->flags = le32_to_cpu(cmd->flags);
174 cmd->tag = le64_to_cpu(cmd->tag);
175 cmd->pdu_len = le32_to_cpu(cmd->pdu_len);
177 switch (cmd->version) {
181 log_err("fio: bad server cmd version %d\n", cmd->version);
185 if (cmd->pdu_len > FIO_SERVER_MAX_FRAGMENT_PDU) {
186 log_err("fio: command payload too large: %u\n", cmd->pdu_len);
194 * Read (and defragment, if necessary) incoming commands
196 struct fio_net_cmd *fio_net_recv_cmd(int sk)
198 struct fio_net_cmd cmd, *cmdret = NULL;
199 size_t cmd_size = 0, pdu_offset = 0;
205 ret = fio_recv_data(sk, &cmd, sizeof(cmd));
209 /* We have a command, verify it and swap if need be */
210 ret = verify_convert_cmd(&cmd);
215 /* if this is text, add room for \0 at the end */
216 cmd_size = sizeof(cmd) + cmd.pdu_len + 1;
219 cmd_size += cmd.pdu_len;
221 cmdret = realloc(cmdret, cmd_size);
224 memcpy(cmdret, &cmd, sizeof(cmd));
225 else if (cmdret->opcode != cmd.opcode) {
226 log_err("fio: fragment opcode mismatch (%d != %d)\n",
227 cmdret->opcode, cmd.opcode);
235 /* There's payload, get it */
236 pdu = (void *) cmdret->payload + pdu_offset;
237 ret = fio_recv_data(sk, pdu, cmd.pdu_len);
241 /* Verify payload crc */
242 crc = fio_crc16(pdu, cmd.pdu_len);
243 if (crc != cmd.pdu_crc16) {
244 log_err("fio: server bad crc on payload ");
245 log_err("(got %x, wanted %x)\n", cmd.pdu_crc16, crc);
250 pdu_offset += cmd.pdu_len;
252 cmdret->pdu_len += cmd.pdu_len;
254 } while (cmd.flags & FIO_NET_CMD_F_MORE);
260 /* zero-terminate text input */
261 if (cmdret->pdu_len) {
262 if (cmdret->opcode == FIO_NET_CMD_TEXT) {
263 struct cmd_text_pdu *pdu = (struct cmd_text_pdu *) cmdret->payload;
264 char *buf = (char *) pdu->buf;
266 buf[pdu->buf_len ] = '\0';
267 } else if (cmdret->opcode == FIO_NET_CMD_JOB) {
268 struct cmd_job_pdu *pdu = (struct cmd_job_pdu *) cmdret->payload;
269 char *buf = (char *) pdu->buf;
270 int len = le32_to_cpu(pdu->buf_len);
276 /* frag flag is internal */
277 cmdret->flags &= ~FIO_NET_CMD_F_MORE;
283 void fio_net_cmd_crc_pdu(struct fio_net_cmd *cmd, const void *pdu)
287 cmd->cmd_crc16 = __cpu_to_le16(fio_crc16(cmd, FIO_NET_CMD_CRC_SZ));
289 pdu_len = le32_to_cpu(cmd->pdu_len);
290 cmd->pdu_crc16 = __cpu_to_le16(fio_crc16(pdu, pdu_len));
293 void fio_net_cmd_crc(struct fio_net_cmd *cmd)
295 fio_net_cmd_crc_pdu(cmd, cmd->payload);
298 int fio_net_send_cmd(int fd, uint16_t opcode, const void *buf, off_t size,
301 struct fio_net_cmd *cmd = NULL;
302 size_t this_len, cur_len = 0;
307 if (this_len > FIO_SERVER_MAX_FRAGMENT_PDU)
308 this_len = FIO_SERVER_MAX_FRAGMENT_PDU;
310 if (!cmd || cur_len < sizeof(*cmd) + this_len) {
314 cur_len = sizeof(*cmd) + this_len;
315 cmd = malloc(cur_len);
318 fio_init_net_cmd(cmd, opcode, buf, this_len, tag);
321 cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE);
323 fio_net_cmd_crc(cmd);
325 ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len);
328 } while (!ret && size);
336 static int fio_net_send_simple_stack_cmd(int sk, uint16_t opcode, uint64_t tag)
338 struct fio_net_cmd cmd;
340 fio_init_net_cmd(&cmd, opcode, NULL, 0, tag);
341 fio_net_cmd_crc(&cmd);
343 return fio_send_data(sk, &cmd, sizeof(cmd));
347 * If 'list' is non-NULL, then allocate and store the sent command for
348 * later verification.
350 int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t tag,
351 struct flist_head *list)
353 struct fio_net_int_cmd *cmd;
357 return fio_net_send_simple_stack_cmd(sk, opcode, tag);
359 cmd = malloc(sizeof(*cmd));
361 fio_init_net_cmd(&cmd->cmd, opcode, NULL, 0, (uintptr_t) cmd);
362 fio_net_cmd_crc(&cmd->cmd);
364 INIT_FLIST_HEAD(&cmd->list);
365 gettimeofday(&cmd->tv, NULL);
366 cmd->saved_tag = tag;
368 ret = fio_send_data(sk, &cmd->cmd, sizeof(cmd->cmd));
374 flist_add_tail(&cmd->list, list);
378 static int fio_server_send_quit_cmd(void)
380 dprint(FD_NET, "server: sending quit\n");
381 return fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_QUIT, 0, NULL);
384 static int handle_run_cmd(struct fio_net_cmd *cmd)
386 struct cmd_end_pdu epdu;
392 fio_net_send_cmd(server_fd, FIO_NET_CMD_STOP, &epdu, sizeof(epdu), 0);
394 fio_server_send_quit_cmd();
400 static int handle_job_cmd(struct fio_net_cmd *cmd)
402 struct cmd_job_pdu *pdu = (struct cmd_job_pdu *) cmd->payload;
403 void *buf = pdu->buf;
404 struct cmd_start_pdu spdu;
406 pdu->buf_len = le32_to_cpu(pdu->buf_len);
407 pdu->client_type = le32_to_cpu(pdu->client_type);
409 if (parse_jobs_ini(buf, 1, 0, pdu->client_type)) {
410 fio_server_send_quit_cmd();
414 spdu.jobs = cpu_to_le32(thread_number);
415 fio_net_send_cmd(server_fd, FIO_NET_CMD_START, &spdu, sizeof(spdu), 0);
419 static int handle_jobline_cmd(struct fio_net_cmd *cmd)
421 void *pdu = cmd->payload;
422 struct cmd_single_line_pdu *cslp;
423 struct cmd_line_pdu *clp;
424 unsigned long offset;
425 struct cmd_start_pdu spdu;
430 clp->lines = le16_to_cpu(clp->lines);
431 clp->client_type = le16_to_cpu(clp->client_type);
432 argv = malloc(clp->lines * sizeof(char *));
433 offset = sizeof(*clp);
435 dprint(FD_NET, "server: %d command line args\n", clp->lines);
437 for (i = 0; i < clp->lines; i++) {
439 argv[i] = (char *) cslp->text;
441 offset += sizeof(*cslp) + le16_to_cpu(cslp->len);
442 dprint(FD_NET, "server: %d: %s\n", i, argv[i]);
445 if (parse_cmd_line(clp->lines, argv, clp->client_type)) {
446 fio_server_send_quit_cmd();
453 spdu.jobs = cpu_to_le32(thread_number);
454 fio_net_send_cmd(server_fd, FIO_NET_CMD_START, &spdu, sizeof(spdu), 0);
458 static int handle_probe_cmd(struct fio_net_cmd *cmd)
460 struct cmd_probe_pdu probe;
462 dprint(FD_NET, "server: sending probe reply\n");
464 memset(&probe, 0, sizeof(probe));
465 gethostname((char *) probe.hostname, sizeof(probe.hostname));
466 #ifdef FIO_BIG_ENDIAN
469 probe.fio_major = FIO_MAJOR;
470 probe.fio_minor = FIO_MINOR;
471 probe.fio_patch = FIO_PATCH;
474 probe.arch = FIO_ARCH;
476 probe.bpp = sizeof(void *);
478 return fio_net_send_cmd(server_fd, FIO_NET_CMD_PROBE, &probe, sizeof(probe), cmd->tag);
481 static int handle_send_eta_cmd(struct fio_net_cmd *cmd)
490 size = sizeof(*je) + thread_number * sizeof(char) + 1;
494 if (!calc_thread_status(je, 1)) {
499 dprint(FD_NET, "server sending status\n");
501 je->nr_running = cpu_to_le32(je->nr_running);
502 je->nr_ramp = cpu_to_le32(je->nr_ramp);
503 je->nr_pending = cpu_to_le32(je->nr_pending);
504 je->files_open = cpu_to_le32(je->files_open);
506 for (i = 0; i < 2; i++) {
507 je->m_rate[i] = cpu_to_le32(je->m_rate[i]);
508 je->t_rate[i] = cpu_to_le32(je->t_rate[i]);
509 je->m_iops[i] = cpu_to_le32(je->m_iops[i]);
510 je->t_iops[i] = cpu_to_le32(je->t_iops[i]);
511 je->rate[i] = cpu_to_le32(je->rate[i]);
512 je->iops[i] = cpu_to_le32(je->iops[i]);
515 je->elapsed_sec = cpu_to_le64(je->elapsed_sec);
516 je->eta_sec = cpu_to_le64(je->eta_sec);
517 je->nr_threads = cpu_to_le32(je->nr_threads);
519 fio_net_send_cmd(server_fd, FIO_NET_CMD_ETA, je, size, cmd->tag);
524 static int handle_command(struct fio_net_cmd *cmd)
528 dprint(FD_NET, "server: got op [%s], pdu=%u, tag=%lx\n",
529 fio_server_op(cmd->opcode), cmd->pdu_len, cmd->tag);
531 switch (cmd->opcode) {
532 case FIO_NET_CMD_QUIT:
533 fio_terminate_threads(TERMINATE_ALL);
535 case FIO_NET_CMD_EXIT:
538 case FIO_NET_CMD_JOB:
539 ret = handle_job_cmd(cmd);
541 case FIO_NET_CMD_JOBLINE:
542 ret = handle_jobline_cmd(cmd);
544 case FIO_NET_CMD_PROBE:
545 ret = handle_probe_cmd(cmd);
547 case FIO_NET_CMD_SEND_ETA:
548 ret = handle_send_eta_cmd(cmd);
550 case FIO_NET_CMD_RUN:
551 ret = handle_run_cmd(cmd);
554 log_err("fio: unknown opcode: %s\n",fio_server_op(cmd->opcode));
561 static int handle_connection(int sk, int block)
563 struct fio_net_cmd *cmd = NULL;
567 while (!exit_backend) {
568 struct pollfd pfd = {
575 ret = poll(&pfd, 1, 100);
579 log_err("fio: poll: %s\n", strerror(errno));
587 if (pfd.revents & POLLIN)
589 if (pfd.revents & (POLLERR|POLLHUP)) {
593 } while (!exit_backend);
598 cmd = fio_net_recv_cmd(sk);
604 ret = handle_command(cmd);
618 void fio_server_idle_loop(void)
620 if (!first_cmd_check) {
621 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_SERVER_START, 0, NULL);
625 handle_connection(server_fd, 0);
628 static int accept_loop(int listen_sk)
630 struct sockaddr_in addr;
631 fio_socklen_t len = sizeof(addr);
633 int ret, sk, flags, exitval = 0;
635 dprint(FD_NET, "server enter accept loop\n");
637 flags = fcntl(listen_sk, F_GETFL);
639 fcntl(listen_sk, F_SETFL, flags);
644 ret = poll(&pfd, 1, 100);
648 log_err("fio: poll: %s\n", strerror(errno));
653 if (pfd.revents & POLLIN)
655 } while (!exit_backend);
660 sk = accept(listen_sk, (struct sockaddr *) &addr, &len);
662 log_err("fio: accept: %s\n", strerror(errno));
666 dprint(FD_NET, "server: connect from %s\n", inet_ntoa(addr.sin_addr));
670 exitval = handle_connection(sk, 1);
682 int fio_server_text_output(int level, const char *buf, size_t len)
684 struct cmd_text_pdu *pdu;
689 return log_local_buf(buf, len);
691 tlen = sizeof(*pdu) + len;
694 pdu->level = __cpu_to_le32(level);
695 pdu->buf_len = __cpu_to_le32(len);
697 gettimeofday(&tv, NULL);
698 pdu->log_sec = __cpu_to_le64(tv.tv_sec);
699 pdu->log_usec = __cpu_to_le64(tv.tv_usec);
701 memcpy(pdu->buf, buf, len);
703 fio_net_send_cmd(server_fd, FIO_NET_CMD_TEXT, pdu, tlen, 0);
708 static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
710 dst->max_val = cpu_to_le64(src->max_val);
711 dst->min_val = cpu_to_le64(src->min_val);
712 dst->samples = cpu_to_le64(src->samples);
715 * Encode to IEEE 754 for network transfer
717 dst->mean.u.i = __cpu_to_le64(fio_double_to_uint64(src->mean.u.f));
718 dst->S.u.i = __cpu_to_le64(fio_double_to_uint64(src->S.u.f));
721 static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
725 for (i = 0; i < 2; i++) {
726 dst->max_run[i] = cpu_to_le64(src->max_run[i]);
727 dst->min_run[i] = cpu_to_le64(src->min_run[i]);
728 dst->max_bw[i] = cpu_to_le64(src->max_bw[i]);
729 dst->min_bw[i] = cpu_to_le64(src->min_bw[i]);
730 dst->io_kb[i] = cpu_to_le64(src->io_kb[i]);
731 dst->agg[i] = cpu_to_le64(src->agg[i]);
734 dst->kb_base = cpu_to_le32(src->kb_base);
735 dst->groupid = cpu_to_le32(src->groupid);
739 * Send a CMD_TS, which packs struct thread_stat and group_run_stats
740 * into a single payload.
742 void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs)
747 dprint(FD_NET, "server sending end stats\n");
749 memset(&p, 0, sizeof(p));
751 strcpy(p.ts.name, ts->name);
752 strcpy(p.ts.verror, ts->verror);
753 strcpy(p.ts.description, ts->description);
755 p.ts.error = cpu_to_le32(ts->error);
756 p.ts.groupid = cpu_to_le32(ts->groupid);
757 p.ts.pid = cpu_to_le32(ts->pid);
758 p.ts.members = cpu_to_le32(ts->members);
760 for (i = 0; i < 2; i++) {
761 convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]);
762 convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]);
763 convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]);
764 convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]);
767 p.ts.usr_time = cpu_to_le64(ts->usr_time);
768 p.ts.sys_time = cpu_to_le64(ts->sys_time);
769 p.ts.ctx = cpu_to_le64(ts->ctx);
770 p.ts.minf = cpu_to_le64(ts->minf);
771 p.ts.majf = cpu_to_le64(ts->majf);
772 p.ts.clat_percentiles = cpu_to_le64(ts->clat_percentiles);
774 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
775 fio_fp64_t *src = &ts->percentile_list[i];
776 fio_fp64_t *dst = &p.ts.percentile_list[i];
778 dst->u.i = __cpu_to_le64(fio_double_to_uint64(src->u.f));
781 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
782 p.ts.io_u_map[i] = cpu_to_le32(ts->io_u_map[i]);
783 p.ts.io_u_submit[i] = cpu_to_le32(ts->io_u_submit[i]);
784 p.ts.io_u_complete[i] = cpu_to_le32(ts->io_u_complete[i]);
787 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
788 p.ts.io_u_lat_u[i] = cpu_to_le32(ts->io_u_lat_u[i]);
789 p.ts.io_u_lat_m[i] = cpu_to_le32(ts->io_u_lat_m[i]);
792 for (i = 0; i < 2; i++)
793 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
794 p.ts.io_u_plat[i][j] = cpu_to_le32(ts->io_u_plat[i][j]);
796 for (i = 0; i < 3; i++) {
797 p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]);
798 p.ts.short_io_u[i] = cpu_to_le64(ts->short_io_u[i]);
801 p.ts.total_submit = cpu_to_le64(ts->total_submit);
802 p.ts.total_complete = cpu_to_le64(ts->total_complete);
804 for (i = 0; i < 2; i++) {
805 p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]);
806 p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]);
809 p.ts.total_run_time = cpu_to_le64(ts->total_run_time);
810 p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error);
811 p.ts.total_err_count = cpu_to_le64(ts->total_err_count);
812 p.ts.first_error = cpu_to_le32(ts->first_error);
813 p.ts.kb_base = cpu_to_le32(ts->kb_base);
815 convert_gs(&p.rs, rs);
817 fio_net_send_cmd(server_fd, FIO_NET_CMD_TS, &p, sizeof(p), 0);
820 void fio_server_send_gs(struct group_run_stats *rs)
822 struct group_run_stats gs;
824 dprint(FD_NET, "server sending group run stats\n");
827 fio_net_send_cmd(server_fd, FIO_NET_CMD_GS, &gs, sizeof(gs), 0);
830 static void convert_agg(struct disk_util_agg *dst, struct disk_util_agg *src)
834 for (i = 0; i < 2; i++) {
835 dst->ios[i] = cpu_to_le32(src->ios[i]);
836 dst->merges[i] = cpu_to_le32(src->merges[i]);
837 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
838 dst->ticks[i] = cpu_to_le32(src->ticks[i]);
841 dst->io_ticks = cpu_to_le32(src->io_ticks);
842 dst->time_in_queue = cpu_to_le32(src->time_in_queue);
843 dst->slavecount = cpu_to_le32(src->slavecount);
844 dst->max_util.u.i = __cpu_to_le64(fio_double_to_uint64(src->max_util.u.f));
847 static void convert_dus(struct disk_util_stat *dst, struct disk_util_stat *src)
851 strcpy((char *) dst->name, (char *) src->name);
853 for (i = 0; i < 2; i++) {
854 dst->ios[i] = cpu_to_le32(src->ios[i]);
855 dst->merges[i] = cpu_to_le32(src->merges[i]);
856 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
857 dst->ticks[i] = cpu_to_le32(src->ticks[i]);
860 dst->io_ticks = cpu_to_le32(src->io_ticks);
861 dst->time_in_queue = cpu_to_le32(src->time_in_queue);
862 dst->msec = cpu_to_le64(src->msec);
865 void fio_server_send_du(void)
867 struct disk_util *du;
868 struct flist_head *entry;
869 struct cmd_du_pdu pdu;
871 dprint(FD_NET, "server: sending disk_util %d\n", !flist_empty(&disk_list));
873 memset(&pdu, 0, sizeof(pdu));
875 flist_for_each(entry, &disk_list) {
876 du = flist_entry(entry, struct disk_util, list);
878 convert_dus(&pdu.dus, &du->dus);
879 convert_agg(&pdu.agg, &du->agg);
881 fio_net_send_cmd(server_fd, FIO_NET_CMD_DU, &pdu, sizeof(pdu), 0);
886 * Send a command with a separate PDU, not inlined in the command
888 static int fio_send_cmd_ext_pdu(int sk, uint16_t opcode, const void *buf,
889 off_t size, uint64_t tag, uint32_t flags)
891 struct fio_net_cmd cmd;
894 iov[0].iov_base = &cmd;
895 iov[0].iov_len = sizeof(cmd);
896 iov[1].iov_base = (void *) buf;
897 iov[1].iov_len = size;
899 __fio_init_net_cmd(&cmd, opcode, size, tag);
900 cmd.flags = __cpu_to_le32(flags);
901 fio_net_cmd_crc_pdu(&cmd, buf);
903 return fio_sendv_data(server_fd, iov, 2);
906 int fio_send_iolog(struct thread_data *td, struct io_log *log, const char *name)
908 struct cmd_iolog_pdu pdu;
913 pdu.nr_samples = __cpu_to_le32(log->nr_samples);
914 pdu.log_type = cpu_to_le32(log->log_type);
915 strcpy((char *) pdu.name, name);
917 for (i = 0; i < log->nr_samples; i++) {
918 struct io_sample *s = &log->log[i];
920 s->time = cpu_to_le64(s->time);
921 s->val = cpu_to_le64(s->val);
922 s->ddir = cpu_to_le32(s->ddir);
923 s->bs = cpu_to_le32(s->bs);
927 * Dirty - since the log is potentially huge, compress it into
928 * FIO_SERVER_MAX_FRAGMENT_PDU chunks and let the receiving
929 * side defragment it.
931 out_pdu = malloc(FIO_SERVER_MAX_FRAGMENT_PDU);
933 stream.zalloc = Z_NULL;
934 stream.zfree = Z_NULL;
935 stream.opaque = Z_NULL;
937 if (deflateInit(&stream, Z_DEFAULT_COMPRESSION) != Z_OK) {
943 * Send header first, it's not compressed.
945 ret = fio_send_cmd_ext_pdu(server_fd, FIO_NET_CMD_IOLOG, &pdu,
946 sizeof(pdu), 0, FIO_NET_CMD_F_MORE);
950 stream.next_in = (void *) log->log;
951 stream.avail_in = log->nr_samples * sizeof(struct io_sample);
954 unsigned int this_len, flags = 0;
957 stream.avail_out = FIO_SERVER_MAX_FRAGMENT_PDU;
958 stream.next_out = out_pdu;
959 ret = deflate(&stream, Z_FINISH);
960 /* may be Z_OK, or Z_STREAM_END */
964 this_len = FIO_SERVER_MAX_FRAGMENT_PDU - stream.avail_out;
967 flags = FIO_NET_CMD_F_MORE;
969 ret = fio_send_cmd_ext_pdu(server_fd, FIO_NET_CMD_IOLOG,
970 out_pdu, this_len, 0, flags);
973 } while (stream.avail_in);
982 void fio_server_send_add_job(struct thread_options *o, const char *ioengine)
984 struct cmd_add_job_pdu pdu;
986 memset(&pdu, 0, sizeof(pdu));
987 convert_thread_options_to_net(&pdu.top, o);
989 fio_net_send_cmd(server_fd, FIO_NET_CMD_ADD_JOB, &pdu, sizeof(pdu), 0);
992 static int fio_init_server_ip(void)
994 struct sockaddr *addr;
995 fio_socklen_t socklen;
999 sk = socket(AF_INET6, SOCK_STREAM, 0);
1001 sk = socket(AF_INET, SOCK_STREAM, 0);
1004 log_err("fio: socket: %s\n", strerror(errno));
1009 if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) {
1010 log_err("fio: setsockopt: %s\n", strerror(errno));
1015 if (setsockopt(sk, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) {
1016 log_err("fio: setsockopt: %s\n", strerror(errno));
1023 addr = (struct sockaddr *) &saddr_in6;
1024 socklen = sizeof(saddr_in6);
1025 saddr_in6.sin6_family = AF_INET6;
1027 addr = (struct sockaddr *) &saddr_in;
1028 socklen = sizeof(saddr_in);
1029 saddr_in.sin_family = AF_INET;
1032 if (bind(sk, addr, socklen) < 0) {
1033 log_err("fio: bind: %s\n", strerror(errno));
1041 static int fio_init_server_sock(void)
1043 struct sockaddr_un addr;
1048 sk = socket(AF_UNIX, SOCK_STREAM, 0);
1050 log_err("fio: socket: %s\n", strerror(errno));
1056 memset(&addr, 0, sizeof(addr));
1057 addr.sun_family = AF_UNIX;
1058 strcpy(addr.sun_path, bind_sock);
1061 len = sizeof(addr.sun_family) + strlen(bind_sock) + 1;
1063 if (bind(sk, (struct sockaddr *) &addr, len) < 0) {
1064 log_err("fio: bind: %s\n", strerror(errno));
1073 static int fio_init_server_connection(void)
1078 dprint(FD_NET, "starting server\n");
1081 sk = fio_init_server_ip();
1083 sk = fio_init_server_sock();
1095 src = &saddr_in6.sin6_addr;
1098 src = &saddr_in.sin_addr;
1101 p = (char *) inet_ntop(af, src, bind_str, sizeof(bind_str));
1103 sprintf(port, ",%u", fio_net_port);
1107 strcpy(bind_str, port);
1109 strcpy(bind_str, bind_sock);
1111 log_info("fio: server listening on %s\n", bind_str);
1113 if (listen(sk, 0) < 0) {
1114 log_err("fio: listen: %s\n", strerror(errno));
1121 int fio_server_parse_host(const char *host, int *ipv6, struct in_addr *inp,
1122 struct in6_addr *inp6)
1128 ret = inet_pton(AF_INET6, host, inp6);
1130 ret = inet_pton(AF_INET, host, inp);
1133 struct hostent *hent;
1135 hent = gethostbyname(host);
1137 log_err("fio: failed to resolve <%s>\n", host);
1142 if (hent->h_addrtype != AF_INET6) {
1143 log_info("fio: falling back to IPv4\n");
1146 memcpy(inp6, hent->h_addr_list[0], 16);
1149 if (hent->h_addrtype != AF_INET) {
1150 log_err("fio: lookup type mismatch\n");
1153 memcpy(inp, hent->h_addr_list[0], 4);
1162 * Parse a host/ip/port string. Reads from 'str'.
1167 * *ptr is the host, *port is the port, inp is the destination.
1169 * *ptr is the host, *port is the port, inp6 is the dest, and *ipv6 is 1.
1170 * For local domain sockets:
1171 * *ptr is the filename, *is_sock is 1.
1173 int fio_server_parse_string(const char *str, char **ptr, int *is_sock,
1174 int *port, struct in_addr *inp,
1175 struct in6_addr *inp6, int *ipv6)
1177 const char *host = str;
1183 *port = fio_net_port;
1186 if (!strncmp(str, "sock:", 5)) {
1187 *ptr = strdup(str + 5);
1194 * Is it ip:<ip or host>:port
1196 if (!strncmp(host, "ip:", 3))
1198 else if (!strncmp(host, "ip4:", 4))
1200 else if (!strncmp(host, "ip6:", 4)) {
1203 } else if (host[0] == ':') {
1204 /* String is :port */
1207 if (!lport || lport > 65535) {
1208 log_err("fio: bad server port %u\n", port);
1211 /* no hostname given, we are done */
1217 * If no port seen yet, check if there's a last ':' at the end
1220 portp = strchr(host, ',');
1224 lport = atoi(portp);
1225 if (!lport || lport > 65535) {
1226 log_err("fio: bad server port %u\n", port);
1238 *ptr = strdup(host);
1240 if (fio_server_parse_host(*ptr, ipv6, inp, inp6)) {
1247 *port = fio_net_port;
1253 * Server arg should be one of:
1255 * sock:/path/to/socket
1259 * Where sock uses unix domain sockets, and ip binds the server to
1260 * a specific interface. If no arguments are given to the server, it
1261 * uses IP and binds to 0.0.0.0.
1264 static int fio_handle_server_arg(void)
1266 int port = fio_net_port;
1267 int is_sock, ret = 0;
1269 saddr_in.sin_addr.s_addr = htonl(INADDR_ANY);
1271 if (!fio_server_arg)
1274 ret = fio_server_parse_string(fio_server_arg, &bind_sock, &is_sock,
1275 &port, &saddr_in.sin_addr,
1276 &saddr_in6.sin6_addr, &use_ipv6);
1278 if (!is_sock && bind_sock) {
1284 fio_net_port = port;
1285 saddr_in.sin_port = htons(port);
1286 saddr_in6.sin6_port = htons(port);
1290 static int fio_server(void)
1294 dprint(FD_NET, "starting server\n");
1296 if (fio_handle_server_arg())
1299 sk = fio_init_server_connection();
1303 ret = accept_loop(sk);
1307 if (fio_server_arg) {
1308 free(fio_server_arg);
1309 fio_server_arg = NULL;
1317 void fio_server_got_signal(int signal)
1319 if (signal == SIGPIPE)
1322 log_info("\nfio: terminating on signal %d\n", signal);
1327 static int check_existing_pidfile(const char *pidfile)
1334 if (stat(pidfile, &sb))
1337 f = fopen(pidfile, "r");
1341 if (fread(buf, sb.st_size, 1, f) <= 0) {
1348 if (kill(pid, SIGCONT) < 0)
1349 return errno != ESRCH;
1354 static int write_pid(pid_t pid, const char *pidfile)
1358 fpid = fopen(pidfile, "w");
1360 log_err("fio: failed opening pid file %s\n", pidfile);
1364 fprintf(fpid, "%u\n", (unsigned int) pid);
1370 * If pidfile is specified, background us.
1372 int fio_start_server(char *pidfile)
1379 WSAStartup(MAKEWORD(2,2), &wsd);
1383 return fio_server();
1385 if (check_existing_pidfile(pidfile)) {
1386 log_err("fio: pidfile %s exists and server appears alive\n",
1393 log_err("fio: failed server fork: %s", strerror(errno));
1397 int ret = write_pid(pid, pidfile);
1403 openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER);
1405 close(STDIN_FILENO);
1406 close(STDOUT_FILENO);
1407 close(STDERR_FILENO);
1419 void fio_server_set_arg(const char *arg)
1421 fio_server_arg = strdup(arg);