11 #include <sys/socket.h>
14 #include <netinet/in.h>
15 #include <arpa/inet.h>
22 #include "crc/crc16.h"
25 #include "fio_version.h"
27 int fio_net_port = 8765;
31 static int server_fd = -1;
32 static char *fio_server_arg;
33 static char *bind_sock;
34 static struct sockaddr_in saddr_in;
36 int fio_send_data(int sk, const void *p, unsigned int len)
38 assert(len <= sizeof(struct fio_net_cmd) + FIO_SERVER_MAX_PDU);
41 int ret = send(sk, p, len, 0);
51 else if (errno == EAGAIN || errno == EINTR)
53 } while (!exit_backend);
61 int fio_recv_data(int sk, void *p, unsigned int len)
64 int ret = recv(sk, p, len, MSG_WAITALL);
74 else if (errno == EAGAIN || errno == EINTR)
76 } while (!exit_backend);
84 static int verify_convert_cmd(struct fio_net_cmd *cmd)
88 cmd->cmd_crc16 = le16_to_cpu(cmd->cmd_crc16);
89 cmd->pdu_crc16 = le16_to_cpu(cmd->pdu_crc16);
91 crc = crc16(cmd, FIO_NET_CMD_CRC_SZ);
92 if (crc != cmd->cmd_crc16) {
93 log_err("fio: server bad crc on command (got %x, wanted %x)\n",
98 cmd->version = le16_to_cpu(cmd->version);
99 cmd->opcode = le16_to_cpu(cmd->opcode);
100 cmd->flags = le32_to_cpu(cmd->flags);
101 cmd->tag = le64_to_cpu(cmd->tag);
102 cmd->pdu_len = le32_to_cpu(cmd->pdu_len);
104 switch (cmd->version) {
108 log_err("fio: bad server cmd version %d\n", cmd->version);
112 if (cmd->pdu_len > FIO_SERVER_MAX_PDU) {
113 log_err("fio: command payload too large: %u\n", cmd->pdu_len);
121 * Read (and defragment, if necessary) incoming commands
123 struct fio_net_cmd *fio_net_recv_cmd(int sk)
125 struct fio_net_cmd cmd, *cmdret = NULL;
126 size_t cmd_size = 0, pdu_offset = 0;
132 ret = fio_recv_data(sk, &cmd, sizeof(cmd));
136 /* We have a command, verify it and swap if need be */
137 ret = verify_convert_cmd(&cmd);
142 /* if this is text, add room for \0 at the end */
143 cmd_size = sizeof(cmd) + cmd.pdu_len + 1;
146 cmd_size += cmd.pdu_len;
148 cmdret = realloc(cmdret, cmd_size);
151 memcpy(cmdret, &cmd, sizeof(cmd));
153 assert(cmdret->opcode == cmd.opcode);
158 /* There's payload, get it */
159 pdu = (void *) cmdret->payload + pdu_offset;
160 ret = fio_recv_data(sk, pdu, cmd.pdu_len);
164 /* Verify payload crc */
165 crc = crc16(pdu, cmd.pdu_len);
166 if (crc != cmd.pdu_crc16) {
167 log_err("fio: server bad crc on payload ");
168 log_err("(got %x, wanted %x)\n", cmd.pdu_crc16, crc);
173 pdu_offset += cmd.pdu_len;
175 cmdret->pdu_len += cmd.pdu_len;
177 } while (cmd.flags & FIO_NET_CMD_F_MORE);
183 /* zero-terminate text input */
184 if (cmdret->pdu_len && (cmdret->opcode == FIO_NET_CMD_TEXT ||
185 cmdret->opcode == FIO_NET_CMD_JOB)) {
186 char *buf = (char *) cmdret->payload;
188 buf[cmdret->pdu_len ] = '\0';
190 /* frag flag is internal */
191 cmdret->flags &= ~FIO_NET_CMD_F_MORE;
197 void fio_net_cmd_crc(struct fio_net_cmd *cmd)
201 cmd->cmd_crc16 = __cpu_to_le16(crc16(cmd, FIO_NET_CMD_CRC_SZ));
203 pdu_len = le32_to_cpu(cmd->pdu_len);
205 cmd->pdu_crc16 = __cpu_to_le16(crc16(cmd->payload, pdu_len));
208 int fio_net_send_cmd(int fd, uint16_t opcode, const void *buf, off_t size,
211 struct fio_net_cmd *cmd = NULL;
212 size_t this_len, cur_len = 0;
217 if (this_len > FIO_SERVER_MAX_PDU)
218 this_len = FIO_SERVER_MAX_PDU;
220 if (!cmd || cur_len < sizeof(*cmd) + this_len) {
224 cur_len = sizeof(*cmd) + this_len;
225 cmd = malloc(cur_len);
228 fio_init_net_cmd(cmd, opcode, buf, this_len, tag);
231 cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE);
233 fio_net_cmd_crc(cmd);
235 ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len);
238 } while (!ret && size);
246 int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t tag)
248 struct fio_net_cmd cmd;
250 fio_init_net_cmd(&cmd, opcode, NULL, 0, tag);
251 fio_net_cmd_crc(&cmd);
253 return fio_send_data(sk, &cmd, sizeof(cmd));
256 static int fio_server_send_quit_cmd(void)
258 dprint(FD_NET, "server: sending quit\n");
259 return fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_QUIT, 0);
262 static int handle_job_cmd(struct fio_net_cmd *cmd)
264 char *buf = (char *) cmd->payload;
267 if (parse_jobs_ini(buf, 1, 0)) {
268 fio_server_send_quit_cmd();
272 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_START, 0);
275 fio_server_send_quit_cmd();
280 static int handle_jobline_cmd(struct fio_net_cmd *cmd)
282 void *pdu = cmd->payload;
283 struct cmd_single_line_pdu *cslp;
284 struct cmd_line_pdu *clp;
285 unsigned long offset;
290 clp->lines = le16_to_cpu(clp->lines);
291 argv = malloc(clp->lines * sizeof(char *));
292 offset = sizeof(*clp);
294 dprint(FD_NET, "server: %d command line args\n", clp->lines);
296 for (i = 0; i < clp->lines; i++) {
298 argv[i] = (char *) cslp->text;
300 offset += sizeof(*cslp) + le16_to_cpu(cslp->len);
301 dprint(FD_NET, "server: %d: %s\n", i, argv[i]);
304 if (parse_cmd_line(clp->lines, argv)) {
305 fio_server_send_quit_cmd();
312 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_START, 0);
315 fio_server_send_quit_cmd();
320 static int handle_probe_cmd(struct fio_net_cmd *cmd)
322 struct cmd_probe_pdu probe;
324 memset(&probe, 0, sizeof(probe));
325 gethostname((char *) probe.hostname, sizeof(probe.hostname));
326 #ifdef FIO_BIG_ENDIAN
329 probe.fio_major = FIO_MAJOR;
330 probe.fio_minor = FIO_MINOR;
331 probe.fio_patch = FIO_PATCH;
334 probe.arch = FIO_ARCH;
336 return fio_net_send_cmd(server_fd, FIO_NET_CMD_PROBE, &probe, sizeof(probe), 0);
339 static int handle_send_eta_cmd(struct fio_net_cmd *cmd)
345 size = sizeof(*je) + thread_number * sizeof(char);
349 if (!calc_thread_status(je, 1)) {
354 dprint(FD_NET, "server sending status\n");
356 je->nr_running = cpu_to_le32(je->nr_running);
357 je->nr_ramp = cpu_to_le32(je->nr_ramp);
358 je->nr_pending = cpu_to_le32(je->nr_pending);
359 je->files_open = cpu_to_le32(je->files_open);
360 je->m_rate = cpu_to_le32(je->m_rate);
361 je->t_rate = cpu_to_le32(je->t_rate);
362 je->m_iops = cpu_to_le32(je->m_iops);
363 je->t_iops = cpu_to_le32(je->t_iops);
365 for (i = 0; i < 2; i++) {
366 je->rate[i] = cpu_to_le32(je->rate[i]);
367 je->iops[i] = cpu_to_le32(je->iops[i]);
370 je->elapsed_sec = cpu_to_le32(je->nr_running);
371 je->eta_sec = cpu_to_le64(je->eta_sec);
373 fio_net_send_cmd(server_fd, FIO_NET_CMD_ETA, je, size, cmd->tag);
378 static int handle_command(struct fio_net_cmd *cmd)
382 dprint(FD_NET, "server: got opcode %d, pdu=%u\n", cmd->opcode, cmd->pdu_len);
384 switch (cmd->opcode) {
385 case FIO_NET_CMD_QUIT:
386 fio_terminate_threads(TERMINATE_ALL);
388 case FIO_NET_CMD_EXIT:
391 case FIO_NET_CMD_JOB:
392 ret = handle_job_cmd(cmd);
394 case FIO_NET_CMD_JOBLINE:
395 ret = handle_jobline_cmd(cmd);
397 case FIO_NET_CMD_PROBE:
398 ret = handle_probe_cmd(cmd);
400 case FIO_NET_CMD_SEND_ETA:
401 ret = handle_send_eta_cmd(cmd);
404 log_err("fio: unknown opcode: %d\n", cmd->opcode);
411 static int handle_connection(int sk, int block)
413 struct fio_net_cmd *cmd = NULL;
417 while (!exit_backend) {
418 struct pollfd pfd = {
425 ret = poll(&pfd, 1, 100);
429 log_err("fio: poll: %s\n", strerror(errno));
437 if (pfd.revents & POLLIN)
439 if (pfd.revents & (POLLERR|POLLHUP)) {
443 } while (!exit_backend);
448 cmd = fio_net_recv_cmd(sk);
454 ret = handle_command(cmd);
468 void fio_server_idle_loop(void)
471 handle_connection(server_fd, 0);
474 static int accept_loop(int listen_sk)
476 struct sockaddr_in addr;
477 fio_socklen_t len = sizeof(addr);
479 int ret, sk, flags, exitval = 0;
481 dprint(FD_NET, "server enter accept loop\n");
483 flags = fcntl(listen_sk, F_GETFL);
485 fcntl(listen_sk, F_SETFL, flags);
490 ret = poll(&pfd, 1, 100);
494 log_err("fio: poll: %s\n", strerror(errno));
499 if (pfd.revents & POLLIN)
501 } while (!exit_backend);
506 sk = accept(listen_sk, (struct sockaddr *) &addr, &len);
508 log_err("fio: accept: %s\n", strerror(errno));
512 dprint(FD_NET, "server: connect from %s\n", inet_ntoa(addr.sin_addr));
516 exitval = handle_connection(sk, 1);
528 int fio_server_text_output(const char *buf, size_t len)
531 return fio_net_send_cmd(server_fd, FIO_NET_CMD_TEXT, buf, len, 0);
533 return log_local_buf(buf, len);
536 static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
538 dst->max_val = cpu_to_le64(src->max_val);
539 dst->min_val = cpu_to_le64(src->min_val);
540 dst->samples = cpu_to_le64(src->samples);
543 * Encode to IEEE 754 for network transfer
545 dst->mean.u.i = __cpu_to_le64(fio_double_to_uint64(src->mean.u.f));
546 dst->S.u.i = __cpu_to_le64(fio_double_to_uint64(src->S.u.f));
549 static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
553 for (i = 0; i < 2; i++) {
554 dst->max_run[i] = cpu_to_le64(src->max_run[i]);
555 dst->min_run[i] = cpu_to_le64(src->min_run[i]);
556 dst->max_bw[i] = cpu_to_le64(src->max_bw[i]);
557 dst->min_bw[i] = cpu_to_le64(src->min_bw[i]);
558 dst->io_kb[i] = cpu_to_le64(src->io_kb[i]);
559 dst->agg[i] = cpu_to_le64(src->agg[i]);
562 dst->kb_base = cpu_to_le32(src->kb_base);
563 dst->groupid = cpu_to_le32(src->groupid);
567 * Send a CMD_TS, which packs struct thread_stat and group_run_stats
568 * into a single payload.
570 void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs)
575 dprint(FD_NET, "server sending end stats\n");
577 memset(&p, 0, sizeof(p));
579 strcpy(p.ts.name, ts->name);
580 strcpy(p.ts.verror, ts->verror);
581 strcpy(p.ts.description, ts->description);
583 p.ts.error = cpu_to_le32(ts->error);
584 p.ts.groupid = cpu_to_le32(ts->groupid);
585 p.ts.pid = cpu_to_le32(ts->pid);
586 p.ts.members = cpu_to_le32(ts->members);
588 for (i = 0; i < 2; i++) {
589 convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]);
590 convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]);
591 convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]);
592 convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]);
595 p.ts.usr_time = cpu_to_le64(ts->usr_time);
596 p.ts.sys_time = cpu_to_le64(ts->sys_time);
597 p.ts.ctx = cpu_to_le64(ts->ctx);
598 p.ts.minf = cpu_to_le64(ts->minf);
599 p.ts.majf = cpu_to_le64(ts->majf);
600 p.ts.clat_percentiles = cpu_to_le64(ts->clat_percentiles);
602 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
603 fio_fp64_t *fp = &p.ts.percentile_list[i];
605 fp->u.i = __cpu_to_le64(fio_double_to_uint64(fp->u.f));
608 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
609 p.ts.io_u_map[i] = cpu_to_le32(ts->io_u_map[i]);
610 p.ts.io_u_submit[i] = cpu_to_le32(ts->io_u_submit[i]);
611 p.ts.io_u_complete[i] = cpu_to_le32(ts->io_u_complete[i]);
614 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
615 p.ts.io_u_lat_u[i] = cpu_to_le32(ts->io_u_lat_u[i]);
616 p.ts.io_u_lat_m[i] = cpu_to_le32(ts->io_u_lat_m[i]);
619 for (i = 0; i < 2; i++)
620 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
621 p.ts.io_u_plat[i][j] = cpu_to_le32(ts->io_u_plat[i][j]);
623 for (i = 0; i < 3; i++) {
624 p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]);
625 p.ts.short_io_u[i] = cpu_to_le64(ts->short_io_u[i]);
628 p.ts.total_submit = cpu_to_le64(ts->total_submit);
629 p.ts.total_complete = cpu_to_le64(ts->total_complete);
631 for (i = 0; i < 2; i++) {
632 p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]);
633 p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]);
636 p.ts.total_run_time = cpu_to_le64(ts->total_run_time);
637 p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error);
638 p.ts.total_err_count = cpu_to_le64(ts->total_err_count);
639 p.ts.first_error = cpu_to_le32(ts->first_error);
640 p.ts.kb_base = cpu_to_le32(ts->kb_base);
642 convert_gs(&p.rs, rs);
644 fio_net_send_cmd(server_fd, FIO_NET_CMD_TS, &p, sizeof(p), 0);
647 void fio_server_send_gs(struct group_run_stats *rs)
649 struct group_run_stats gs;
651 dprint(FD_NET, "server sending group run stats\n");
654 fio_net_send_cmd(server_fd, FIO_NET_CMD_GS, &gs, sizeof(gs), 0);
657 int fio_server_log(const char *format, ...)
663 dprint(FD_NET, "server log\n");
665 va_start(args, format);
666 len = vsnprintf(buffer, sizeof(buffer), format, args);
669 return fio_server_text_output(buffer, len);
672 static int fio_init_server_ip(void)
676 sk = socket(AF_INET, SOCK_STREAM, 0);
678 log_err("fio: socket: %s\n", strerror(errno));
683 if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) {
684 log_err("fio: setsockopt: %s\n", strerror(errno));
689 if (setsockopt(sk, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) {
690 log_err("fio: setsockopt: %s\n", strerror(errno));
696 saddr_in.sin_family = AF_INET;
698 if (bind(sk, (struct sockaddr *) &saddr_in, sizeof(saddr_in)) < 0) {
699 log_err("fio: bind: %s\n", strerror(errno));
707 static int fio_init_server_sock(void)
709 struct sockaddr_un addr;
714 sk = socket(AF_UNIX, SOCK_STREAM, 0);
716 log_err("fio: socket: %s\n", strerror(errno));
722 memset(&addr, 0, sizeof(addr));
723 addr.sun_family = AF_UNIX;
724 strcpy(addr.sun_path, bind_sock);
727 len = sizeof(addr.sun_family) + strlen(bind_sock) + 1;
729 if (bind(sk, (struct sockaddr *) &addr, len) < 0) {
730 log_err("fio: bind: %s\n", strerror(errno));
739 static int fio_init_server_connection(void)
744 dprint(FD_NET, "starting server\n");
747 sk = fio_init_server_ip();
749 sk = fio_init_server_sock();
755 sprintf(bind_str, "%s:%u", inet_ntoa(saddr_in.sin_addr), fio_net_port);
757 strcpy(bind_str, bind_sock);
759 log_info("fio: server listening on %s\n", bind_str);
761 if (listen(sk, 1) < 0) {
762 log_err("fio: listen: %s\n", strerror(errno));
769 int fio_server_parse_string(const char *str, char **ptr, int *is_sock,
770 int *port, struct in_addr *inp)
774 *port = fio_net_port;
776 if (!strncmp(str, "sock:", 5)) {
777 *ptr = strdup(str + 5);
780 const char *host = str;
785 * Is it ip:<ip or host>:port
787 if (!strncmp(host, "ip:", 3))
789 else if (host[0] == ':') {
790 /* String is :port */
793 if (!lport || lport > 65535) {
794 log_err("fio: bad server port %u\n", port);
797 /* no hostname given, we are done */
803 * If no port seen yet, check if there's a last ':' at the end
806 portp = strchr(host, ':');
811 if (!lport || lport > 65535) {
812 log_err("fio: bad server port %u\n", port);
823 if (inet_aton(host, inp) != 1) {
824 struct hostent *hent;
826 hent = gethostbyname(host);
833 memcpy(inp, hent->h_addr, 4);
838 *port = fio_net_port;
844 * Server arg should be one of:
846 * sock:/path/to/socket
850 * Where sock uses unix domain sockets, and ip binds the server to
851 * a specific interface. If no arguments are given to the server, it
852 * uses IP and binds to 0.0.0.0.
855 static int fio_handle_server_arg(void)
857 int port = fio_net_port;
858 int is_sock, ret = 0;
860 saddr_in.sin_addr.s_addr = htonl(INADDR_ANY);
865 ret = fio_server_parse_string(fio_server_arg, &bind_sock, &is_sock,
866 &port, &saddr_in.sin_addr);
868 if (!is_sock && bind_sock) {
875 saddr_in.sin_port = htons(port);
879 static int fio_server(void)
883 dprint(FD_NET, "starting server\n");
885 if (fio_handle_server_arg())
888 sk = fio_init_server_connection();
892 ret = accept_loop(sk);
896 if (fio_server_arg) {
897 free(fio_server_arg);
898 fio_server_arg = NULL;
906 static void sig_int(int sig)
908 fio_terminate_threads(TERMINATE_ALL);
912 static void server_signal_handler(void)
914 struct sigaction act;
916 memset(&act, 0, sizeof(act));
917 act.sa_handler = sig_int;
918 act.sa_flags = SA_RESTART;
919 sigaction(SIGINT, &act, NULL);
921 memset(&act, 0, sizeof(act));
922 act.sa_handler = sig_int;
923 act.sa_flags = SA_RESTART;
924 sigaction(SIGTERM, &act, NULL);
927 static int check_existing_pidfile(const char *pidfile)
934 if (stat(pidfile, &sb))
937 f = fopen(pidfile, "r");
941 if (fread(buf, sb.st_size, 1, f) <= 0) {
948 if (kill(pid, SIGCONT) < 0)
954 static int write_pid(pid_t pid, const char *pidfile)
958 fpid = fopen(pidfile, "w");
960 log_err("fio: failed opening pid file %s\n", pidfile);
964 fprintf(fpid, "%u\n", (unsigned int) pid);
970 * If pidfile is specified, background us.
972 int fio_start_server(char *pidfile)
977 server_signal_handler();
982 if (check_existing_pidfile(pidfile)) {
983 log_err("fio: pidfile %s exists and server appears alive\n",
990 log_err("fio: failed server fork: %s", strerror(errno));
994 int ret = write_pid(pid, pidfile);
1000 openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER);
1002 close(STDIN_FILENO);
1003 close(STDOUT_FILENO);
1004 close(STDERR_FILENO);
1016 void fio_server_set_arg(const char *arg)
1018 fio_server_arg = strdup(arg);