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 static const char *fio_server_ops[FIO_NET_CMD_NR] = {
52 const char *fio_server_op(unsigned int op)
56 if (op < FIO_NET_CMD_NR)
57 return fio_server_ops[op];
59 sprintf(buf, "UNKNOWN/%d", op);
63 int fio_send_data(int sk, const void *p, unsigned int len)
65 assert(len <= sizeof(struct fio_net_cmd) + FIO_SERVER_MAX_PDU);
68 int ret = send(sk, p, len, 0);
78 else if (errno == EAGAIN || errno == EINTR)
80 } while (!exit_backend);
88 int fio_recv_data(int sk, void *p, unsigned int len)
91 int ret = recv(sk, p, len, MSG_WAITALL);
101 else if (errno == EAGAIN || errno == EINTR)
103 } while (!exit_backend);
111 static int verify_convert_cmd(struct fio_net_cmd *cmd)
115 cmd->cmd_crc16 = le16_to_cpu(cmd->cmd_crc16);
116 cmd->pdu_crc16 = le16_to_cpu(cmd->pdu_crc16);
118 crc = crc16(cmd, FIO_NET_CMD_CRC_SZ);
119 if (crc != cmd->cmd_crc16) {
120 log_err("fio: server bad crc on command (got %x, wanted %x)\n",
121 cmd->cmd_crc16, crc);
125 cmd->version = le16_to_cpu(cmd->version);
126 cmd->opcode = le16_to_cpu(cmd->opcode);
127 cmd->flags = le32_to_cpu(cmd->flags);
128 cmd->tag = le64_to_cpu(cmd->tag);
129 cmd->pdu_len = le32_to_cpu(cmd->pdu_len);
131 switch (cmd->version) {
135 log_err("fio: bad server cmd version %d\n", cmd->version);
139 if (cmd->pdu_len > FIO_SERVER_MAX_PDU) {
140 log_err("fio: command payload too large: %u\n", cmd->pdu_len);
148 * Read (and defragment, if necessary) incoming commands
150 struct fio_net_cmd *fio_net_recv_cmd(int sk)
152 struct fio_net_cmd cmd, *cmdret = NULL;
153 size_t cmd_size = 0, pdu_offset = 0;
159 ret = fio_recv_data(sk, &cmd, sizeof(cmd));
163 /* We have a command, verify it and swap if need be */
164 ret = verify_convert_cmd(&cmd);
169 /* if this is text, add room for \0 at the end */
170 cmd_size = sizeof(cmd) + cmd.pdu_len + 1;
173 cmd_size += cmd.pdu_len;
175 cmdret = realloc(cmdret, cmd_size);
178 memcpy(cmdret, &cmd, sizeof(cmd));
180 assert(cmdret->opcode == cmd.opcode);
185 /* There's payload, get it */
186 pdu = (void *) cmdret->payload + pdu_offset;
187 ret = fio_recv_data(sk, pdu, cmd.pdu_len);
191 /* Verify payload crc */
192 crc = crc16(pdu, cmd.pdu_len);
193 if (crc != cmd.pdu_crc16) {
194 log_err("fio: server bad crc on payload ");
195 log_err("(got %x, wanted %x)\n", cmd.pdu_crc16, crc);
200 pdu_offset += cmd.pdu_len;
202 cmdret->pdu_len += cmd.pdu_len;
204 } while (cmd.flags & FIO_NET_CMD_F_MORE);
210 /* zero-terminate text input */
211 if (cmdret->pdu_len && (cmdret->opcode == FIO_NET_CMD_TEXT ||
212 cmdret->opcode == FIO_NET_CMD_JOB)) {
213 char *buf = (char *) cmdret->payload;
215 buf[cmdret->pdu_len ] = '\0';
217 /* frag flag is internal */
218 cmdret->flags &= ~FIO_NET_CMD_F_MORE;
224 void fio_net_cmd_crc(struct fio_net_cmd *cmd)
228 cmd->cmd_crc16 = __cpu_to_le16(crc16(cmd, FIO_NET_CMD_CRC_SZ));
230 pdu_len = le32_to_cpu(cmd->pdu_len);
232 cmd->pdu_crc16 = __cpu_to_le16(crc16(cmd->payload, pdu_len));
235 int fio_net_send_cmd(int fd, uint16_t opcode, const void *buf, off_t size,
238 struct fio_net_cmd *cmd = NULL;
239 size_t this_len, cur_len = 0;
244 if (this_len > FIO_SERVER_MAX_PDU)
245 this_len = FIO_SERVER_MAX_PDU;
247 if (!cmd || cur_len < sizeof(*cmd) + this_len) {
251 cur_len = sizeof(*cmd) + this_len;
252 cmd = malloc(cur_len);
255 fio_init_net_cmd(cmd, opcode, buf, this_len, tag);
258 cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE);
260 fio_net_cmd_crc(cmd);
262 ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len);
265 } while (!ret && size);
273 static int fio_net_send_simple_stack_cmd(int sk, uint16_t opcode, uint64_t tag)
275 struct fio_net_cmd cmd;
277 fio_init_net_cmd(&cmd, opcode, NULL, 0, tag);
278 fio_net_cmd_crc(&cmd);
280 return fio_send_data(sk, &cmd, sizeof(cmd));
284 * If 'list' is non-NULL, then allocate and store the sent command for
285 * later verification.
287 int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t tag,
288 struct flist_head *list)
290 struct fio_net_int_cmd *cmd;
294 return fio_net_send_simple_stack_cmd(sk, opcode, tag);
296 cmd = malloc(sizeof(*cmd));
298 fio_init_net_cmd(&cmd->cmd, opcode, NULL, 0, (uint64_t) cmd);
299 fio_net_cmd_crc(&cmd->cmd);
301 INIT_FLIST_HEAD(&cmd->list);
302 gettimeofday(&cmd->tv, NULL);
303 cmd->saved_tag = tag;
305 ret = fio_send_data(sk, &cmd->cmd, sizeof(cmd->cmd));
311 flist_add_tail(&cmd->list, list);
315 static int fio_server_send_quit_cmd(void)
317 dprint(FD_NET, "server: sending quit\n");
318 return fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_QUIT, 0, NULL);
321 static int handle_job_cmd(struct fio_net_cmd *cmd)
323 char *buf = (char *) cmd->payload;
326 if (parse_jobs_ini(buf, 1, 0)) {
327 fio_server_send_quit_cmd();
331 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_START, 0, NULL);
334 fio_server_send_quit_cmd();
339 static int handle_jobline_cmd(struct fio_net_cmd *cmd)
341 void *pdu = cmd->payload;
342 struct cmd_single_line_pdu *cslp;
343 struct cmd_line_pdu *clp;
344 unsigned long offset;
349 clp->lines = le16_to_cpu(clp->lines);
350 argv = malloc(clp->lines * sizeof(char *));
351 offset = sizeof(*clp);
353 dprint(FD_NET, "server: %d command line args\n", clp->lines);
355 for (i = 0; i < clp->lines; i++) {
357 argv[i] = (char *) cslp->text;
359 offset += sizeof(*cslp) + le16_to_cpu(cslp->len);
360 dprint(FD_NET, "server: %d: %s\n", i, argv[i]);
363 if (parse_cmd_line(clp->lines, argv)) {
364 fio_server_send_quit_cmd();
371 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_START, 0, NULL);
374 fio_server_send_quit_cmd();
379 static int handle_probe_cmd(struct fio_net_cmd *cmd)
381 struct cmd_probe_pdu probe;
383 dprint(FD_NET, "server: sending probe reply\n");
385 memset(&probe, 0, sizeof(probe));
386 gethostname((char *) probe.hostname, sizeof(probe.hostname));
387 #ifdef FIO_BIG_ENDIAN
390 probe.fio_major = FIO_MAJOR;
391 probe.fio_minor = FIO_MINOR;
392 probe.fio_patch = FIO_PATCH;
395 probe.arch = FIO_ARCH;
397 return fio_net_send_cmd(server_fd, FIO_NET_CMD_PROBE, &probe, sizeof(probe), cmd->tag);
400 static int handle_send_eta_cmd(struct fio_net_cmd *cmd)
406 size = sizeof(*je) + thread_number * sizeof(char);
410 if (!calc_thread_status(je, 1)) {
415 dprint(FD_NET, "server sending status\n");
417 je->nr_running = cpu_to_le32(je->nr_running);
418 je->nr_ramp = cpu_to_le32(je->nr_ramp);
419 je->nr_pending = cpu_to_le32(je->nr_pending);
420 je->files_open = cpu_to_le32(je->files_open);
421 je->m_rate = cpu_to_le32(je->m_rate);
422 je->t_rate = cpu_to_le32(je->t_rate);
423 je->m_iops = cpu_to_le32(je->m_iops);
424 je->t_iops = cpu_to_le32(je->t_iops);
426 for (i = 0; i < 2; i++) {
427 je->rate[i] = cpu_to_le32(je->rate[i]);
428 je->iops[i] = cpu_to_le32(je->iops[i]);
431 je->elapsed_sec = cpu_to_le32(je->nr_running);
432 je->eta_sec = cpu_to_le64(je->eta_sec);
434 fio_net_send_cmd(server_fd, FIO_NET_CMD_ETA, je, size, cmd->tag);
439 static int handle_command(struct fio_net_cmd *cmd)
443 dprint(FD_NET, "server: got op [%s], pdu=%u, tag=%lx\n",
444 fio_server_op(cmd->opcode), cmd->pdu_len, cmd->tag);
446 switch (cmd->opcode) {
447 case FIO_NET_CMD_QUIT:
448 fio_terminate_threads(TERMINATE_ALL);
450 case FIO_NET_CMD_EXIT:
453 case FIO_NET_CMD_JOB:
454 ret = handle_job_cmd(cmd);
456 case FIO_NET_CMD_JOBLINE:
457 ret = handle_jobline_cmd(cmd);
459 case FIO_NET_CMD_PROBE:
460 ret = handle_probe_cmd(cmd);
462 case FIO_NET_CMD_SEND_ETA:
463 ret = handle_send_eta_cmd(cmd);
466 log_err("fio: unknown opcode: %s\n",fio_server_op(cmd->opcode));
473 static int handle_connection(int sk, int block)
475 struct fio_net_cmd *cmd = NULL;
479 while (!exit_backend) {
480 struct pollfd pfd = {
487 ret = poll(&pfd, 1, 100);
491 log_err("fio: poll: %s\n", strerror(errno));
499 if (pfd.revents & POLLIN)
501 if (pfd.revents & (POLLERR|POLLHUP)) {
505 } while (!exit_backend);
510 cmd = fio_net_recv_cmd(sk);
516 ret = handle_command(cmd);
530 void fio_server_idle_loop(void)
533 handle_connection(server_fd, 0);
536 static int accept_loop(int listen_sk)
538 struct sockaddr_in addr;
539 fio_socklen_t len = sizeof(addr);
541 int ret, sk, flags, exitval = 0;
543 dprint(FD_NET, "server enter accept loop\n");
545 flags = fcntl(listen_sk, F_GETFL);
547 fcntl(listen_sk, F_SETFL, flags);
552 ret = poll(&pfd, 1, 100);
556 log_err("fio: poll: %s\n", strerror(errno));
561 if (pfd.revents & POLLIN)
563 } while (!exit_backend);
568 sk = accept(listen_sk, (struct sockaddr *) &addr, &len);
570 log_err("fio: accept: %s\n", strerror(errno));
574 dprint(FD_NET, "server: connect from %s\n", inet_ntoa(addr.sin_addr));
578 exitval = handle_connection(sk, 1);
590 int fio_server_text_output(const char *buf, size_t len)
593 return fio_net_send_cmd(server_fd, FIO_NET_CMD_TEXT, buf, len, 0);
595 return log_local_buf(buf, len);
598 static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
600 dst->max_val = cpu_to_le64(src->max_val);
601 dst->min_val = cpu_to_le64(src->min_val);
602 dst->samples = cpu_to_le64(src->samples);
605 * Encode to IEEE 754 for network transfer
607 dst->mean.u.i = __cpu_to_le64(fio_double_to_uint64(src->mean.u.f));
608 dst->S.u.i = __cpu_to_le64(fio_double_to_uint64(src->S.u.f));
611 static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
615 for (i = 0; i < 2; i++) {
616 dst->max_run[i] = cpu_to_le64(src->max_run[i]);
617 dst->min_run[i] = cpu_to_le64(src->min_run[i]);
618 dst->max_bw[i] = cpu_to_le64(src->max_bw[i]);
619 dst->min_bw[i] = cpu_to_le64(src->min_bw[i]);
620 dst->io_kb[i] = cpu_to_le64(src->io_kb[i]);
621 dst->agg[i] = cpu_to_le64(src->agg[i]);
624 dst->kb_base = cpu_to_le32(src->kb_base);
625 dst->groupid = cpu_to_le32(src->groupid);
629 * Send a CMD_TS, which packs struct thread_stat and group_run_stats
630 * into a single payload.
632 void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs)
637 dprint(FD_NET, "server sending end stats\n");
639 memset(&p, 0, sizeof(p));
641 strcpy(p.ts.name, ts->name);
642 strcpy(p.ts.verror, ts->verror);
643 strcpy(p.ts.description, ts->description);
645 p.ts.error = cpu_to_le32(ts->error);
646 p.ts.groupid = cpu_to_le32(ts->groupid);
647 p.ts.pid = cpu_to_le32(ts->pid);
648 p.ts.members = cpu_to_le32(ts->members);
650 for (i = 0; i < 2; i++) {
651 convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]);
652 convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]);
653 convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]);
654 convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]);
657 p.ts.usr_time = cpu_to_le64(ts->usr_time);
658 p.ts.sys_time = cpu_to_le64(ts->sys_time);
659 p.ts.ctx = cpu_to_le64(ts->ctx);
660 p.ts.minf = cpu_to_le64(ts->minf);
661 p.ts.majf = cpu_to_le64(ts->majf);
662 p.ts.clat_percentiles = cpu_to_le64(ts->clat_percentiles);
664 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
665 fio_fp64_t *fp = &p.ts.percentile_list[i];
667 fp->u.i = __cpu_to_le64(fio_double_to_uint64(fp->u.f));
670 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
671 p.ts.io_u_map[i] = cpu_to_le32(ts->io_u_map[i]);
672 p.ts.io_u_submit[i] = cpu_to_le32(ts->io_u_submit[i]);
673 p.ts.io_u_complete[i] = cpu_to_le32(ts->io_u_complete[i]);
676 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
677 p.ts.io_u_lat_u[i] = cpu_to_le32(ts->io_u_lat_u[i]);
678 p.ts.io_u_lat_m[i] = cpu_to_le32(ts->io_u_lat_m[i]);
681 for (i = 0; i < 2; i++)
682 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
683 p.ts.io_u_plat[i][j] = cpu_to_le32(ts->io_u_plat[i][j]);
685 for (i = 0; i < 3; i++) {
686 p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]);
687 p.ts.short_io_u[i] = cpu_to_le64(ts->short_io_u[i]);
690 p.ts.total_submit = cpu_to_le64(ts->total_submit);
691 p.ts.total_complete = cpu_to_le64(ts->total_complete);
693 for (i = 0; i < 2; i++) {
694 p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]);
695 p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]);
698 p.ts.total_run_time = cpu_to_le64(ts->total_run_time);
699 p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error);
700 p.ts.total_err_count = cpu_to_le64(ts->total_err_count);
701 p.ts.first_error = cpu_to_le32(ts->first_error);
702 p.ts.kb_base = cpu_to_le32(ts->kb_base);
704 convert_gs(&p.rs, rs);
706 fio_net_send_cmd(server_fd, FIO_NET_CMD_TS, &p, sizeof(p), 0);
709 void fio_server_send_gs(struct group_run_stats *rs)
711 struct group_run_stats gs;
713 dprint(FD_NET, "server sending group run stats\n");
716 fio_net_send_cmd(server_fd, FIO_NET_CMD_GS, &gs, sizeof(gs), 0);
719 int fio_server_log(const char *format, ...)
725 dprint(FD_NET, "server log\n");
727 va_start(args, format);
728 len = vsnprintf(buffer, sizeof(buffer), format, args);
731 return fio_server_text_output(buffer, len);
734 static int fio_init_server_ip(void)
738 sk = socket(AF_INET, SOCK_STREAM, 0);
740 log_err("fio: socket: %s\n", strerror(errno));
745 if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) {
746 log_err("fio: setsockopt: %s\n", strerror(errno));
751 if (setsockopt(sk, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) {
752 log_err("fio: setsockopt: %s\n", strerror(errno));
758 saddr_in.sin_family = AF_INET;
760 if (bind(sk, (struct sockaddr *) &saddr_in, sizeof(saddr_in)) < 0) {
761 log_err("fio: bind: %s\n", strerror(errno));
769 static int fio_init_server_sock(void)
771 struct sockaddr_un addr;
776 sk = socket(AF_UNIX, SOCK_STREAM, 0);
778 log_err("fio: socket: %s\n", strerror(errno));
784 memset(&addr, 0, sizeof(addr));
785 addr.sun_family = AF_UNIX;
786 strcpy(addr.sun_path, bind_sock);
789 len = sizeof(addr.sun_family) + strlen(bind_sock) + 1;
791 if (bind(sk, (struct sockaddr *) &addr, len) < 0) {
792 log_err("fio: bind: %s\n", strerror(errno));
801 static int fio_init_server_connection(void)
806 dprint(FD_NET, "starting server\n");
809 sk = fio_init_server_ip();
811 sk = fio_init_server_sock();
817 sprintf(bind_str, "%s:%u", inet_ntoa(saddr_in.sin_addr), fio_net_port);
819 strcpy(bind_str, bind_sock);
821 log_info("fio: server listening on %s\n", bind_str);
823 if (listen(sk, 0) < 0) {
824 log_err("fio: listen: %s\n", strerror(errno));
831 int fio_server_parse_string(const char *str, char **ptr, int *is_sock,
832 int *port, struct in_addr *inp)
836 *port = fio_net_port;
838 if (!strncmp(str, "sock:", 5)) {
839 *ptr = strdup(str + 5);
842 const char *host = str;
847 * Is it ip:<ip or host>:port
849 if (!strncmp(host, "ip:", 3))
851 else if (host[0] == ':') {
852 /* String is :port */
855 if (!lport || lport > 65535) {
856 log_err("fio: bad server port %u\n", port);
859 /* no hostname given, we are done */
865 * If no port seen yet, check if there's a last ':' at the end
868 portp = strchr(host, ':');
873 if (!lport || lport > 65535) {
874 log_err("fio: bad server port %u\n", port);
885 if (inet_aton(host, inp) != 1) {
886 struct hostent *hent;
888 hent = gethostbyname(host);
895 memcpy(inp, hent->h_addr, 4);
900 *port = fio_net_port;
906 * Server arg should be one of:
908 * sock:/path/to/socket
912 * Where sock uses unix domain sockets, and ip binds the server to
913 * a specific interface. If no arguments are given to the server, it
914 * uses IP and binds to 0.0.0.0.
917 static int fio_handle_server_arg(void)
919 int port = fio_net_port;
920 int is_sock, ret = 0;
922 saddr_in.sin_addr.s_addr = htonl(INADDR_ANY);
927 ret = fio_server_parse_string(fio_server_arg, &bind_sock, &is_sock,
928 &port, &saddr_in.sin_addr);
930 if (!is_sock && bind_sock) {
937 saddr_in.sin_port = htons(port);
941 static int fio_server(void)
945 dprint(FD_NET, "starting server\n");
947 if (fio_handle_server_arg())
950 sk = fio_init_server_connection();
954 ret = accept_loop(sk);
958 if (fio_server_arg) {
959 free(fio_server_arg);
960 fio_server_arg = NULL;
968 static void sig_int(int sig)
970 fio_terminate_threads(TERMINATE_ALL);
974 static void server_signal_handler(void)
976 struct sigaction act;
978 memset(&act, 0, sizeof(act));
979 act.sa_handler = sig_int;
980 act.sa_flags = SA_RESTART;
981 sigaction(SIGINT, &act, NULL);
983 memset(&act, 0, sizeof(act));
984 act.sa_handler = sig_int;
985 act.sa_flags = SA_RESTART;
986 sigaction(SIGTERM, &act, NULL);
989 static int check_existing_pidfile(const char *pidfile)
996 if (stat(pidfile, &sb))
999 f = fopen(pidfile, "r");
1003 if (fread(buf, sb.st_size, 1, f) <= 0) {
1010 if (kill(pid, SIGCONT) < 0)
1011 return errno != ESRCH;
1016 static int write_pid(pid_t pid, const char *pidfile)
1020 fpid = fopen(pidfile, "w");
1022 log_err("fio: failed opening pid file %s\n", pidfile);
1026 fprintf(fpid, "%u\n", (unsigned int) pid);
1032 * If pidfile is specified, background us.
1034 int fio_start_server(char *pidfile)
1039 server_signal_handler();
1042 return fio_server();
1044 if (check_existing_pidfile(pidfile)) {
1045 log_err("fio: pidfile %s exists and server appears alive\n",
1052 log_err("fio: failed server fork: %s", strerror(errno));
1056 int ret = write_pid(pid, pidfile);
1062 openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER);
1064 close(STDIN_FILENO);
1065 close(STDOUT_FILENO);
1066 close(STDERR_FILENO);
1078 void fio_server_set_arg(const char *arg)
1080 fio_server_arg = strdup(arg);