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] = {
60 const char *fio_server_op(unsigned int op)
64 if (op < FIO_NET_CMD_NR)
65 return fio_server_ops[op];
67 sprintf(buf, "UNKNOWN/%d", op);
71 static ssize_t iov_total_len(const struct iovec *iov, int count)
83 static int fio_sendv_data(int sk, struct iovec *iov, int count)
85 ssize_t total_len = iov_total_len(iov, count);
89 ret = writev(sk, iov, count);
96 if (ret >= iov->iov_len) {
101 iov->iov_base += ret;
107 else if (errno == EAGAIN || errno == EINTR)
111 } while (!exit_backend);
122 int fio_send_data(int sk, const void *p, unsigned int len)
124 struct iovec iov = { .iov_base = (void *) p, .iov_len = len };
126 assert(len <= sizeof(struct fio_net_cmd) + FIO_SERVER_MAX_FRAGMENT_PDU);
128 return fio_sendv_data(sk, &iov, 1);
131 int fio_recv_data(int sk, void *p, unsigned int len)
134 int ret = recv(sk, p, len, MSG_WAITALL);
144 else if (errno == EAGAIN || errno == EINTR)
148 } while (!exit_backend);
156 static int verify_convert_cmd(struct fio_net_cmd *cmd)
160 cmd->cmd_crc16 = le16_to_cpu(cmd->cmd_crc16);
161 cmd->pdu_crc16 = le16_to_cpu(cmd->pdu_crc16);
163 crc = fio_crc16(cmd, FIO_NET_CMD_CRC_SZ);
164 if (crc != cmd->cmd_crc16) {
165 log_err("fio: server bad crc on command (got %x, wanted %x)\n",
166 cmd->cmd_crc16, crc);
170 cmd->version = le16_to_cpu(cmd->version);
171 cmd->opcode = le16_to_cpu(cmd->opcode);
172 cmd->flags = le32_to_cpu(cmd->flags);
173 cmd->tag = le64_to_cpu(cmd->tag);
174 cmd->pdu_len = le32_to_cpu(cmd->pdu_len);
176 switch (cmd->version) {
180 log_err("fio: bad server cmd version %d\n", cmd->version);
184 if (cmd->pdu_len > FIO_SERVER_MAX_FRAGMENT_PDU) {
185 log_err("fio: command payload too large: %u\n", cmd->pdu_len);
193 * Read (and defragment, if necessary) incoming commands
195 struct fio_net_cmd *fio_net_recv_cmd(int sk)
197 struct fio_net_cmd cmd, *cmdret = NULL;
198 size_t cmd_size = 0, pdu_offset = 0;
204 ret = fio_recv_data(sk, &cmd, sizeof(cmd));
208 /* We have a command, verify it and swap if need be */
209 ret = verify_convert_cmd(&cmd);
214 /* if this is text, add room for \0 at the end */
215 cmd_size = sizeof(cmd) + cmd.pdu_len + 1;
218 cmd_size += cmd.pdu_len;
220 cmdret = realloc(cmdret, cmd_size);
223 memcpy(cmdret, &cmd, sizeof(cmd));
224 else if (cmdret->opcode != cmd.opcode) {
225 log_err("fio: fragment opcode mismatch (%d != %d)\n",
226 cmdret->opcode, cmd.opcode);
234 /* There's payload, get it */
235 pdu = (void *) cmdret->payload + pdu_offset;
236 ret = fio_recv_data(sk, pdu, cmd.pdu_len);
240 /* Verify payload crc */
241 crc = fio_crc16(pdu, cmd.pdu_len);
242 if (crc != cmd.pdu_crc16) {
243 log_err("fio: server bad crc on payload ");
244 log_err("(got %x, wanted %x)\n", cmd.pdu_crc16, crc);
249 pdu_offset += cmd.pdu_len;
251 cmdret->pdu_len += cmd.pdu_len;
253 } while (cmd.flags & FIO_NET_CMD_F_MORE);
259 /* zero-terminate text input */
260 if (cmdret->pdu_len) {
261 if (cmdret->opcode == FIO_NET_CMD_TEXT) {
262 struct cmd_text_pdu *pdu = (struct cmd_text_pdu *) cmdret->payload;
263 char *buf = (char *) pdu->buf;
265 buf[pdu->buf_len ] = '\0';
266 } else if (cmdret->opcode == FIO_NET_CMD_JOB) {
267 struct cmd_job_pdu *pdu = (struct cmd_job_pdu *) cmdret->payload;
268 char *buf = (char *) pdu->buf;
269 int len = le32_to_cpu(pdu->buf_len);
275 /* frag flag is internal */
276 cmdret->flags &= ~FIO_NET_CMD_F_MORE;
282 void fio_net_cmd_crc_pdu(struct fio_net_cmd *cmd, const void *pdu)
286 cmd->cmd_crc16 = __cpu_to_le16(fio_crc16(cmd, FIO_NET_CMD_CRC_SZ));
288 pdu_len = le32_to_cpu(cmd->pdu_len);
289 cmd->pdu_crc16 = __cpu_to_le16(fio_crc16(pdu, pdu_len));
292 void fio_net_cmd_crc(struct fio_net_cmd *cmd)
294 fio_net_cmd_crc_pdu(cmd, cmd->payload);
297 int fio_net_send_cmd(int fd, uint16_t opcode, const void *buf, off_t size,
300 struct fio_net_cmd *cmd = NULL;
301 size_t this_len, cur_len = 0;
306 if (this_len > FIO_SERVER_MAX_FRAGMENT_PDU)
307 this_len = FIO_SERVER_MAX_FRAGMENT_PDU;
309 if (!cmd || cur_len < sizeof(*cmd) + this_len) {
313 cur_len = sizeof(*cmd) + this_len;
314 cmd = malloc(cur_len);
317 fio_init_net_cmd(cmd, opcode, buf, this_len, tag);
320 cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE);
322 fio_net_cmd_crc(cmd);
324 ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len);
327 } while (!ret && size);
335 static int fio_net_send_simple_stack_cmd(int sk, uint16_t opcode, uint64_t tag)
337 struct fio_net_cmd cmd;
339 fio_init_net_cmd(&cmd, opcode, NULL, 0, tag);
340 fio_net_cmd_crc(&cmd);
342 return fio_send_data(sk, &cmd, sizeof(cmd));
346 * If 'list' is non-NULL, then allocate and store the sent command for
347 * later verification.
349 int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t tag,
350 struct flist_head *list)
352 struct fio_net_int_cmd *cmd;
356 return fio_net_send_simple_stack_cmd(sk, opcode, tag);
358 cmd = malloc(sizeof(*cmd));
360 fio_init_net_cmd(&cmd->cmd, opcode, NULL, 0, (uintptr_t) cmd);
361 fio_net_cmd_crc(&cmd->cmd);
363 INIT_FLIST_HEAD(&cmd->list);
364 gettimeofday(&cmd->tv, NULL);
365 cmd->saved_tag = tag;
367 ret = fio_send_data(sk, &cmd->cmd, sizeof(cmd->cmd));
373 flist_add_tail(&cmd->list, list);
377 static int fio_server_send_quit_cmd(void)
379 dprint(FD_NET, "server: sending quit\n");
380 return fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_QUIT, 0, NULL);
383 static int handle_run_cmd(struct fio_net_cmd *cmd)
385 struct cmd_end_pdu epdu;
391 fio_net_send_cmd(server_fd, FIO_NET_CMD_STOP, &epdu, sizeof(epdu), 0);
393 fio_server_send_quit_cmd();
399 static int handle_job_cmd(struct fio_net_cmd *cmd)
401 struct cmd_job_pdu *pdu = (struct cmd_job_pdu *) cmd->payload;
402 void *buf = pdu->buf;
403 struct cmd_start_pdu spdu;
405 pdu->buf_len = le32_to_cpu(pdu->buf_len);
406 pdu->client_type = le32_to_cpu(pdu->client_type);
408 if (parse_jobs_ini(buf, 1, 0, pdu->client_type)) {
409 fio_server_send_quit_cmd();
413 spdu.jobs = cpu_to_le32(thread_number);
414 fio_net_send_cmd(server_fd, FIO_NET_CMD_START, &spdu, sizeof(spdu), 0);
418 static int handle_jobline_cmd(struct fio_net_cmd *cmd)
420 void *pdu = cmd->payload;
421 struct cmd_single_line_pdu *cslp;
422 struct cmd_line_pdu *clp;
423 unsigned long offset;
424 struct cmd_start_pdu spdu;
429 clp->lines = le16_to_cpu(clp->lines);
430 clp->client_type = le16_to_cpu(clp->client_type);
431 argv = malloc(clp->lines * sizeof(char *));
432 offset = sizeof(*clp);
434 dprint(FD_NET, "server: %d command line args\n", clp->lines);
436 for (i = 0; i < clp->lines; i++) {
438 argv[i] = (char *) cslp->text;
440 offset += sizeof(*cslp) + le16_to_cpu(cslp->len);
441 dprint(FD_NET, "server: %d: %s\n", i, argv[i]);
444 if (parse_cmd_line(clp->lines, argv, clp->client_type)) {
445 fio_server_send_quit_cmd();
452 spdu.jobs = cpu_to_le32(thread_number);
453 fio_net_send_cmd(server_fd, FIO_NET_CMD_START, &spdu, sizeof(spdu), 0);
457 static int handle_probe_cmd(struct fio_net_cmd *cmd)
459 struct cmd_probe_pdu probe;
461 dprint(FD_NET, "server: sending probe reply\n");
463 memset(&probe, 0, sizeof(probe));
464 gethostname((char *) probe.hostname, sizeof(probe.hostname));
465 #ifdef FIO_BIG_ENDIAN
468 probe.fio_major = FIO_MAJOR;
469 probe.fio_minor = FIO_MINOR;
470 probe.fio_patch = FIO_PATCH;
473 probe.arch = FIO_ARCH;
475 probe.bpp = sizeof(void *);
477 return fio_net_send_cmd(server_fd, FIO_NET_CMD_PROBE, &probe, sizeof(probe), cmd->tag);
480 static int handle_send_eta_cmd(struct fio_net_cmd *cmd)
489 size = sizeof(*je) + thread_number * sizeof(char) + 1;
493 if (!calc_thread_status(je, 1)) {
498 dprint(FD_NET, "server sending status\n");
500 je->nr_running = cpu_to_le32(je->nr_running);
501 je->nr_ramp = cpu_to_le32(je->nr_ramp);
502 je->nr_pending = cpu_to_le32(je->nr_pending);
503 je->files_open = cpu_to_le32(je->files_open);
505 for (i = 0; i < 2; i++) {
506 je->m_rate[i] = cpu_to_le32(je->m_rate[i]);
507 je->t_rate[i] = cpu_to_le32(je->t_rate[i]);
508 je->m_iops[i] = cpu_to_le32(je->m_iops[i]);
509 je->t_iops[i] = cpu_to_le32(je->t_iops[i]);
510 je->rate[i] = cpu_to_le32(je->rate[i]);
511 je->iops[i] = cpu_to_le32(je->iops[i]);
514 je->elapsed_sec = cpu_to_le64(je->elapsed_sec);
515 je->eta_sec = cpu_to_le64(je->eta_sec);
516 je->nr_threads = cpu_to_le32(je->nr_threads);
518 fio_net_send_cmd(server_fd, FIO_NET_CMD_ETA, je, size, cmd->tag);
523 static int handle_command(struct fio_net_cmd *cmd)
527 dprint(FD_NET, "server: got op [%s], pdu=%u, tag=%lx\n",
528 fio_server_op(cmd->opcode), cmd->pdu_len, cmd->tag);
530 switch (cmd->opcode) {
531 case FIO_NET_CMD_QUIT:
532 fio_terminate_threads(TERMINATE_ALL);
534 case FIO_NET_CMD_EXIT:
537 case FIO_NET_CMD_JOB:
538 ret = handle_job_cmd(cmd);
540 case FIO_NET_CMD_JOBLINE:
541 ret = handle_jobline_cmd(cmd);
543 case FIO_NET_CMD_PROBE:
544 ret = handle_probe_cmd(cmd);
546 case FIO_NET_CMD_SEND_ETA:
547 ret = handle_send_eta_cmd(cmd);
549 case FIO_NET_CMD_RUN:
550 ret = handle_run_cmd(cmd);
553 log_err("fio: unknown opcode: %s\n",fio_server_op(cmd->opcode));
560 static int handle_connection(int sk, int block)
562 struct fio_net_cmd *cmd = NULL;
566 while (!exit_backend) {
567 struct pollfd pfd = {
574 ret = poll(&pfd, 1, 100);
578 log_err("fio: poll: %s\n", strerror(errno));
586 if (pfd.revents & POLLIN)
588 if (pfd.revents & (POLLERR|POLLHUP)) {
592 } while (!exit_backend);
597 cmd = fio_net_recv_cmd(sk);
603 ret = handle_command(cmd);
617 void fio_server_idle_loop(void)
619 if (!first_cmd_check) {
620 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_SERVER_START, 0, NULL);
624 handle_connection(server_fd, 0);
627 static int accept_loop(int listen_sk)
629 struct sockaddr_in addr;
630 fio_socklen_t len = sizeof(addr);
632 int ret, sk, flags, exitval = 0;
634 dprint(FD_NET, "server enter accept loop\n");
636 flags = fcntl(listen_sk, F_GETFL);
638 fcntl(listen_sk, F_SETFL, flags);
643 ret = poll(&pfd, 1, 100);
647 log_err("fio: poll: %s\n", strerror(errno));
652 if (pfd.revents & POLLIN)
654 } while (!exit_backend);
659 sk = accept(listen_sk, (struct sockaddr *) &addr, &len);
661 log_err("fio: accept: %s\n", strerror(errno));
665 dprint(FD_NET, "server: connect from %s\n", inet_ntoa(addr.sin_addr));
669 exitval = handle_connection(sk, 1);
681 int fio_server_text_output(int level, const char *buf, size_t len)
683 struct cmd_text_pdu *pdu;
688 return log_local_buf(buf, len);
690 tlen = sizeof(*pdu) + len;
693 pdu->level = __cpu_to_le32(level);
694 pdu->buf_len = __cpu_to_le32(len);
696 gettimeofday(&tv, NULL);
697 pdu->log_sec = __cpu_to_le64(tv.tv_sec);
698 pdu->log_usec = __cpu_to_le64(tv.tv_usec);
700 memcpy(pdu->buf, buf, len);
702 fio_net_send_cmd(server_fd, FIO_NET_CMD_TEXT, pdu, tlen, 0);
707 static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
709 dst->max_val = cpu_to_le64(src->max_val);
710 dst->min_val = cpu_to_le64(src->min_val);
711 dst->samples = cpu_to_le64(src->samples);
714 * Encode to IEEE 754 for network transfer
716 dst->mean.u.i = __cpu_to_le64(fio_double_to_uint64(src->mean.u.f));
717 dst->S.u.i = __cpu_to_le64(fio_double_to_uint64(src->S.u.f));
720 static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
724 for (i = 0; i < 2; i++) {
725 dst->max_run[i] = cpu_to_le64(src->max_run[i]);
726 dst->min_run[i] = cpu_to_le64(src->min_run[i]);
727 dst->max_bw[i] = cpu_to_le64(src->max_bw[i]);
728 dst->min_bw[i] = cpu_to_le64(src->min_bw[i]);
729 dst->io_kb[i] = cpu_to_le64(src->io_kb[i]);
730 dst->agg[i] = cpu_to_le64(src->agg[i]);
733 dst->kb_base = cpu_to_le32(src->kb_base);
734 dst->groupid = cpu_to_le32(src->groupid);
738 * Send a CMD_TS, which packs struct thread_stat and group_run_stats
739 * into a single payload.
741 void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs)
746 dprint(FD_NET, "server sending end stats\n");
748 memset(&p, 0, sizeof(p));
750 strcpy(p.ts.name, ts->name);
751 strcpy(p.ts.verror, ts->verror);
752 strcpy(p.ts.description, ts->description);
754 p.ts.error = cpu_to_le32(ts->error);
755 p.ts.groupid = cpu_to_le32(ts->groupid);
756 p.ts.pid = cpu_to_le32(ts->pid);
757 p.ts.members = cpu_to_le32(ts->members);
759 for (i = 0; i < 2; i++) {
760 convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]);
761 convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]);
762 convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]);
763 convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]);
766 p.ts.usr_time = cpu_to_le64(ts->usr_time);
767 p.ts.sys_time = cpu_to_le64(ts->sys_time);
768 p.ts.ctx = cpu_to_le64(ts->ctx);
769 p.ts.minf = cpu_to_le64(ts->minf);
770 p.ts.majf = cpu_to_le64(ts->majf);
771 p.ts.clat_percentiles = cpu_to_le64(ts->clat_percentiles);
773 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
774 fio_fp64_t *src = &ts->percentile_list[i];
775 fio_fp64_t *dst = &p.ts.percentile_list[i];
777 dst->u.i = __cpu_to_le64(fio_double_to_uint64(src->u.f));
780 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
781 p.ts.io_u_map[i] = cpu_to_le32(ts->io_u_map[i]);
782 p.ts.io_u_submit[i] = cpu_to_le32(ts->io_u_submit[i]);
783 p.ts.io_u_complete[i] = cpu_to_le32(ts->io_u_complete[i]);
786 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
787 p.ts.io_u_lat_u[i] = cpu_to_le32(ts->io_u_lat_u[i]);
788 p.ts.io_u_lat_m[i] = cpu_to_le32(ts->io_u_lat_m[i]);
791 for (i = 0; i < 2; i++)
792 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
793 p.ts.io_u_plat[i][j] = cpu_to_le32(ts->io_u_plat[i][j]);
795 for (i = 0; i < 3; i++) {
796 p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]);
797 p.ts.short_io_u[i] = cpu_to_le64(ts->short_io_u[i]);
800 p.ts.total_submit = cpu_to_le64(ts->total_submit);
801 p.ts.total_complete = cpu_to_le64(ts->total_complete);
803 for (i = 0; i < 2; i++) {
804 p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]);
805 p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]);
808 p.ts.total_run_time = cpu_to_le64(ts->total_run_time);
809 p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error);
810 p.ts.total_err_count = cpu_to_le64(ts->total_err_count);
811 p.ts.first_error = cpu_to_le32(ts->first_error);
812 p.ts.kb_base = cpu_to_le32(ts->kb_base);
814 convert_gs(&p.rs, rs);
816 fio_net_send_cmd(server_fd, FIO_NET_CMD_TS, &p, sizeof(p), 0);
819 void fio_server_send_gs(struct group_run_stats *rs)
821 struct group_run_stats gs;
823 dprint(FD_NET, "server sending group run stats\n");
826 fio_net_send_cmd(server_fd, FIO_NET_CMD_GS, &gs, sizeof(gs), 0);
829 static void convert_agg(struct disk_util_agg *dst, struct disk_util_agg *src)
833 for (i = 0; i < 2; i++) {
834 dst->ios[i] = cpu_to_le32(src->ios[i]);
835 dst->merges[i] = cpu_to_le32(src->merges[i]);
836 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
837 dst->ticks[i] = cpu_to_le32(src->ticks[i]);
840 dst->io_ticks = cpu_to_le32(src->io_ticks);
841 dst->time_in_queue = cpu_to_le32(src->time_in_queue);
842 dst->slavecount = cpu_to_le32(src->slavecount);
843 dst->max_util.u.i = __cpu_to_le64(fio_double_to_uint64(src->max_util.u.f));
846 static void convert_dus(struct disk_util_stat *dst, struct disk_util_stat *src)
850 strcpy((char *) dst->name, (char *) src->name);
852 for (i = 0; i < 2; i++) {
853 dst->ios[i] = cpu_to_le32(src->ios[i]);
854 dst->merges[i] = cpu_to_le32(src->merges[i]);
855 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
856 dst->ticks[i] = cpu_to_le32(src->ticks[i]);
859 dst->io_ticks = cpu_to_le32(src->io_ticks);
860 dst->time_in_queue = cpu_to_le32(src->time_in_queue);
861 dst->msec = cpu_to_le64(src->msec);
864 void fio_server_send_du(void)
866 struct disk_util *du;
867 struct flist_head *entry;
868 struct cmd_du_pdu pdu;
870 dprint(FD_NET, "server: sending disk_util %d\n", !flist_empty(&disk_list));
872 memset(&pdu, 0, sizeof(pdu));
874 flist_for_each(entry, &disk_list) {
875 du = flist_entry(entry, struct disk_util, list);
877 convert_dus(&pdu.dus, &du->dus);
878 convert_agg(&pdu.agg, &du->agg);
880 fio_net_send_cmd(server_fd, FIO_NET_CMD_DU, &pdu, sizeof(pdu), 0);
885 * Send a command with a separate PDU, not inlined in the command
887 static int fio_send_cmd_ext_pdu(int sk, uint16_t opcode, const void *buf,
888 off_t size, uint64_t tag, uint32_t flags)
890 struct fio_net_cmd cmd;
893 iov[0].iov_base = &cmd;
894 iov[0].iov_len = sizeof(cmd);
895 iov[1].iov_base = (void *) buf;
896 iov[1].iov_len = size;
898 __fio_init_net_cmd(&cmd, opcode, size, tag);
899 cmd.flags = __cpu_to_le32(flags);
900 fio_net_cmd_crc_pdu(&cmd, buf);
902 return fio_sendv_data(server_fd, iov, 2);
905 int fio_send_iolog(struct thread_data *td, struct io_log *log, const char *name)
907 struct cmd_iolog_pdu pdu;
912 pdu.nr_samples = __cpu_to_le32(log->nr_samples);
913 pdu.log_type = cpu_to_le32(log->log_type);
914 strcpy((char *) pdu.name, name);
916 for (i = 0; i < log->nr_samples; i++) {
917 struct io_sample *s = &log->log[i];
919 s->time = cpu_to_le64(s->time);
920 s->val = cpu_to_le64(s->val);
921 s->ddir = cpu_to_le32(s->ddir);
922 s->bs = cpu_to_le32(s->bs);
926 * Dirty - since the log is potentially huge, compress it into
927 * FIO_SERVER_MAX_FRAGMENT_PDU chunks and let the receiving
928 * side defragment it.
930 out_pdu = malloc(FIO_SERVER_MAX_FRAGMENT_PDU);
932 stream.zalloc = Z_NULL;
933 stream.zfree = Z_NULL;
934 stream.opaque = Z_NULL;
936 if (deflateInit(&stream, Z_DEFAULT_COMPRESSION) != Z_OK) {
942 * Send header first, it's not compressed.
944 ret = fio_send_cmd_ext_pdu(server_fd, FIO_NET_CMD_IOLOG, &pdu,
945 sizeof(pdu), 0, FIO_NET_CMD_F_MORE);
949 stream.next_in = (void *) log->log;
950 stream.avail_in = log->nr_samples * sizeof(struct io_sample);
953 unsigned int this_len, flags = 0;
956 stream.avail_out = FIO_SERVER_MAX_FRAGMENT_PDU;
957 stream.next_out = out_pdu;
958 ret = deflate(&stream, Z_FINISH);
959 /* may be Z_OK, or Z_STREAM_END */
963 this_len = FIO_SERVER_MAX_FRAGMENT_PDU - stream.avail_out;
966 flags = FIO_NET_CMD_F_MORE;
968 ret = fio_send_cmd_ext_pdu(server_fd, FIO_NET_CMD_IOLOG,
969 out_pdu, this_len, 0, flags);
972 } while (stream.avail_in);
981 void fio_server_send_add_job(struct thread_options *o, const char *ioengine)
983 struct cmd_add_job_pdu pdu;
985 memset(&pdu, 0, sizeof(pdu));
986 convert_thread_options_to_net(&pdu.top, o);
988 fio_net_send_cmd(server_fd, FIO_NET_CMD_ADD_JOB, &pdu, sizeof(pdu), 0);
991 static int fio_init_server_ip(void)
993 struct sockaddr *addr;
994 fio_socklen_t socklen;
998 sk = socket(AF_INET6, SOCK_STREAM, 0);
1000 sk = socket(AF_INET, SOCK_STREAM, 0);
1003 log_err("fio: socket: %s\n", strerror(errno));
1008 if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) {
1009 log_err("fio: setsockopt: %s\n", strerror(errno));
1014 if (setsockopt(sk, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) {
1015 log_err("fio: setsockopt: %s\n", strerror(errno));
1022 addr = (struct sockaddr *) &saddr_in6;
1023 socklen = sizeof(saddr_in6);
1024 saddr_in6.sin6_family = AF_INET6;
1026 addr = (struct sockaddr *) &saddr_in;
1027 socklen = sizeof(saddr_in);
1028 saddr_in.sin_family = AF_INET;
1031 if (bind(sk, addr, socklen) < 0) {
1032 log_err("fio: bind: %s\n", strerror(errno));
1040 static int fio_init_server_sock(void)
1042 struct sockaddr_un addr;
1047 sk = socket(AF_UNIX, SOCK_STREAM, 0);
1049 log_err("fio: socket: %s\n", strerror(errno));
1055 memset(&addr, 0, sizeof(addr));
1056 addr.sun_family = AF_UNIX;
1057 strcpy(addr.sun_path, bind_sock);
1060 len = sizeof(addr.sun_family) + strlen(bind_sock) + 1;
1062 if (bind(sk, (struct sockaddr *) &addr, len) < 0) {
1063 log_err("fio: bind: %s\n", strerror(errno));
1072 static int fio_init_server_connection(void)
1077 dprint(FD_NET, "starting server\n");
1080 sk = fio_init_server_ip();
1082 sk = fio_init_server_sock();
1094 src = &saddr_in6.sin6_addr;
1097 src = &saddr_in.sin_addr;
1100 p = (char *) inet_ntop(af, src, bind_str, sizeof(bind_str));
1102 sprintf(port, ",%u", fio_net_port);
1106 strcpy(bind_str, port);
1108 strcpy(bind_str, bind_sock);
1110 log_info("fio: server listening on %s\n", bind_str);
1112 if (listen(sk, 0) < 0) {
1113 log_err("fio: listen: %s\n", strerror(errno));
1120 int fio_server_parse_host(const char *host, int *ipv6, struct in_addr *inp,
1121 struct in6_addr *inp6)
1127 ret = inet_pton(AF_INET6, host, inp6);
1129 ret = inet_pton(AF_INET, host, inp);
1132 struct hostent *hent;
1134 hent = gethostbyname(host);
1136 log_err("fio: failed to resolve <%s>\n", host);
1141 if (hent->h_addrtype != AF_INET6) {
1142 log_info("fio: falling back to IPv4\n");
1145 memcpy(inp6, hent->h_addr_list[0], 16);
1148 if (hent->h_addrtype != AF_INET) {
1149 log_err("fio: lookup type mismatch\n");
1152 memcpy(inp, hent->h_addr_list[0], 4);
1161 * Parse a host/ip/port string. Reads from 'str'.
1166 * *ptr is the host, *port is the port, inp is the destination.
1168 * *ptr is the host, *port is the port, inp6 is the dest, and *ipv6 is 1.
1169 * For local domain sockets:
1170 * *ptr is the filename, *is_sock is 1.
1172 int fio_server_parse_string(const char *str, char **ptr, int *is_sock,
1173 int *port, struct in_addr *inp,
1174 struct in6_addr *inp6, int *ipv6)
1176 const char *host = str;
1182 *port = fio_net_port;
1185 if (!strncmp(str, "sock:", 5)) {
1186 *ptr = strdup(str + 5);
1193 * Is it ip:<ip or host>:port
1195 if (!strncmp(host, "ip:", 3))
1197 else if (!strncmp(host, "ip4:", 4))
1199 else if (!strncmp(host, "ip6:", 4)) {
1202 } else if (host[0] == ':') {
1203 /* String is :port */
1206 if (!lport || lport > 65535) {
1207 log_err("fio: bad server port %u\n", port);
1210 /* no hostname given, we are done */
1216 * If no port seen yet, check if there's a last ':' at the end
1219 portp = strchr(host, ',');
1223 lport = atoi(portp);
1224 if (!lport || lport > 65535) {
1225 log_err("fio: bad server port %u\n", port);
1237 *ptr = strdup(host);
1239 if (fio_server_parse_host(*ptr, ipv6, inp, inp6)) {
1246 *port = fio_net_port;
1252 * Server arg should be one of:
1254 * sock:/path/to/socket
1258 * Where sock uses unix domain sockets, and ip binds the server to
1259 * a specific interface. If no arguments are given to the server, it
1260 * uses IP and binds to 0.0.0.0.
1263 static int fio_handle_server_arg(void)
1265 int port = fio_net_port;
1266 int is_sock, ret = 0;
1268 saddr_in.sin_addr.s_addr = htonl(INADDR_ANY);
1270 if (!fio_server_arg)
1273 ret = fio_server_parse_string(fio_server_arg, &bind_sock, &is_sock,
1274 &port, &saddr_in.sin_addr,
1275 &saddr_in6.sin6_addr, &use_ipv6);
1277 if (!is_sock && bind_sock) {
1283 fio_net_port = port;
1284 saddr_in.sin_port = htons(port);
1285 saddr_in6.sin6_port = htons(port);
1289 static int fio_server(void)
1293 dprint(FD_NET, "starting server\n");
1295 if (fio_handle_server_arg())
1298 sk = fio_init_server_connection();
1302 ret = accept_loop(sk);
1306 if (fio_server_arg) {
1307 free(fio_server_arg);
1308 fio_server_arg = NULL;
1316 void fio_server_got_signal(int signal)
1318 if (signal == SIGPIPE)
1321 log_info("\nfio: terminating on signal %d\n", signal);
1326 static int check_existing_pidfile(const char *pidfile)
1333 if (stat(pidfile, &sb))
1336 f = fopen(pidfile, "r");
1340 if (fread(buf, sb.st_size, 1, f) <= 0) {
1347 if (kill(pid, SIGCONT) < 0)
1348 return errno != ESRCH;
1353 static int write_pid(pid_t pid, const char *pidfile)
1357 fpid = fopen(pidfile, "w");
1359 log_err("fio: failed opening pid file %s\n", pidfile);
1363 fprintf(fpid, "%u\n", (unsigned int) pid);
1369 * If pidfile is specified, background us.
1371 int fio_start_server(char *pidfile)
1378 WSAStartup(MAKEWORD(2,2), &wsd);
1382 return fio_server();
1384 if (check_existing_pidfile(pidfile)) {
1385 log_err("fio: pidfile %s exists and server appears alive\n",
1392 log_err("fio: failed server fork: %s", strerror(errno));
1396 int ret = write_pid(pid, pidfile);
1402 openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER);
1404 close(STDIN_FILENO);
1405 close(STDOUT_FILENO);
1406 close(STDERR_FILENO);
1418 void fio_server_set_arg(const char *arg)
1420 fio_server_arg = strdup(arg);