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)
82 } while (!exit_backend);
90 int fio_recv_data(int sk, void *p, unsigned int len)
93 int ret = recv(sk, p, len, MSG_WAITALL);
103 else if (errno == EAGAIN || errno == EINTR)
107 } while (!exit_backend);
115 static int verify_convert_cmd(struct fio_net_cmd *cmd)
119 cmd->cmd_crc16 = le16_to_cpu(cmd->cmd_crc16);
120 cmd->pdu_crc16 = le16_to_cpu(cmd->pdu_crc16);
122 crc = crc16(cmd, FIO_NET_CMD_CRC_SZ);
123 if (crc != cmd->cmd_crc16) {
124 log_err("fio: server bad crc on command (got %x, wanted %x)\n",
125 cmd->cmd_crc16, crc);
129 cmd->version = le16_to_cpu(cmd->version);
130 cmd->opcode = le16_to_cpu(cmd->opcode);
131 cmd->flags = le32_to_cpu(cmd->flags);
132 cmd->tag = le64_to_cpu(cmd->tag);
133 cmd->pdu_len = le32_to_cpu(cmd->pdu_len);
135 switch (cmd->version) {
139 log_err("fio: bad server cmd version %d\n", cmd->version);
143 if (cmd->pdu_len > FIO_SERVER_MAX_PDU) {
144 log_err("fio: command payload too large: %u\n", cmd->pdu_len);
152 * Read (and defragment, if necessary) incoming commands
154 struct fio_net_cmd *fio_net_recv_cmd(int sk)
156 struct fio_net_cmd cmd, *cmdret = NULL;
157 size_t cmd_size = 0, pdu_offset = 0;
163 ret = fio_recv_data(sk, &cmd, sizeof(cmd));
167 /* We have a command, verify it and swap if need be */
168 ret = verify_convert_cmd(&cmd);
173 /* if this is text, add room for \0 at the end */
174 cmd_size = sizeof(cmd) + cmd.pdu_len + 1;
177 cmd_size += cmd.pdu_len;
179 cmdret = realloc(cmdret, cmd_size);
182 memcpy(cmdret, &cmd, sizeof(cmd));
184 assert(cmdret->opcode == cmd.opcode);
189 /* There's payload, get it */
190 pdu = (void *) cmdret->payload + pdu_offset;
191 ret = fio_recv_data(sk, pdu, cmd.pdu_len);
195 /* Verify payload crc */
196 crc = crc16(pdu, cmd.pdu_len);
197 if (crc != cmd.pdu_crc16) {
198 log_err("fio: server bad crc on payload ");
199 log_err("(got %x, wanted %x)\n", cmd.pdu_crc16, crc);
204 pdu_offset += cmd.pdu_len;
206 cmdret->pdu_len += cmd.pdu_len;
208 } while (cmd.flags & FIO_NET_CMD_F_MORE);
214 /* zero-terminate text input */
215 if (cmdret->pdu_len && (cmdret->opcode == FIO_NET_CMD_TEXT ||
216 cmdret->opcode == FIO_NET_CMD_JOB)) {
217 char *buf = (char *) cmdret->payload;
219 buf[cmdret->pdu_len ] = '\0';
221 /* frag flag is internal */
222 cmdret->flags &= ~FIO_NET_CMD_F_MORE;
228 void fio_net_cmd_crc(struct fio_net_cmd *cmd)
232 cmd->cmd_crc16 = __cpu_to_le16(crc16(cmd, FIO_NET_CMD_CRC_SZ));
234 pdu_len = le32_to_cpu(cmd->pdu_len);
236 cmd->pdu_crc16 = __cpu_to_le16(crc16(cmd->payload, pdu_len));
239 int fio_net_send_cmd(int fd, uint16_t opcode, const void *buf, off_t size,
242 struct fio_net_cmd *cmd = NULL;
243 size_t this_len, cur_len = 0;
248 if (this_len > FIO_SERVER_MAX_PDU)
249 this_len = FIO_SERVER_MAX_PDU;
251 if (!cmd || cur_len < sizeof(*cmd) + this_len) {
255 cur_len = sizeof(*cmd) + this_len;
256 cmd = malloc(cur_len);
259 fio_init_net_cmd(cmd, opcode, buf, this_len, tag);
262 cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE);
264 fio_net_cmd_crc(cmd);
266 ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len);
269 } while (!ret && size);
277 static int fio_net_send_simple_stack_cmd(int sk, uint16_t opcode, uint64_t tag)
279 struct fio_net_cmd cmd;
281 fio_init_net_cmd(&cmd, opcode, NULL, 0, tag);
282 fio_net_cmd_crc(&cmd);
284 return fio_send_data(sk, &cmd, sizeof(cmd));
288 * If 'list' is non-NULL, then allocate and store the sent command for
289 * later verification.
291 int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t tag,
292 struct flist_head *list)
294 struct fio_net_int_cmd *cmd;
298 return fio_net_send_simple_stack_cmd(sk, opcode, tag);
300 cmd = malloc(sizeof(*cmd));
302 fio_init_net_cmd(&cmd->cmd, opcode, NULL, 0, (uint64_t) cmd);
303 fio_net_cmd_crc(&cmd->cmd);
305 INIT_FLIST_HEAD(&cmd->list);
306 gettimeofday(&cmd->tv, NULL);
307 cmd->saved_tag = tag;
309 ret = fio_send_data(sk, &cmd->cmd, sizeof(cmd->cmd));
315 flist_add_tail(&cmd->list, list);
319 static int fio_server_send_quit_cmd(void)
321 dprint(FD_NET, "server: sending quit\n");
322 return fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_QUIT, 0, NULL);
325 static int handle_job_cmd(struct fio_net_cmd *cmd)
327 char *buf = (char *) cmd->payload;
330 if (parse_jobs_ini(buf, 1, 0)) {
331 fio_server_send_quit_cmd();
335 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_START, 0, NULL);
338 fio_server_send_quit_cmd();
343 static int handle_jobline_cmd(struct fio_net_cmd *cmd)
345 void *pdu = cmd->payload;
346 struct cmd_single_line_pdu *cslp;
347 struct cmd_line_pdu *clp;
348 unsigned long offset;
353 clp->lines = le16_to_cpu(clp->lines);
354 argv = malloc(clp->lines * sizeof(char *));
355 offset = sizeof(*clp);
357 dprint(FD_NET, "server: %d command line args\n", clp->lines);
359 for (i = 0; i < clp->lines; i++) {
361 argv[i] = (char *) cslp->text;
363 offset += sizeof(*cslp) + le16_to_cpu(cslp->len);
364 dprint(FD_NET, "server: %d: %s\n", i, argv[i]);
367 if (parse_cmd_line(clp->lines, argv)) {
368 fio_server_send_quit_cmd();
375 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_START, 0, NULL);
378 fio_server_send_quit_cmd();
383 static int handle_probe_cmd(struct fio_net_cmd *cmd)
385 struct cmd_probe_pdu probe;
387 dprint(FD_NET, "server: sending probe reply\n");
389 memset(&probe, 0, sizeof(probe));
390 gethostname((char *) probe.hostname, sizeof(probe.hostname));
391 #ifdef FIO_BIG_ENDIAN
394 probe.fio_major = FIO_MAJOR;
395 probe.fio_minor = FIO_MINOR;
396 probe.fio_patch = FIO_PATCH;
399 probe.arch = FIO_ARCH;
401 return fio_net_send_cmd(server_fd, FIO_NET_CMD_PROBE, &probe, sizeof(probe), cmd->tag);
404 static int handle_send_eta_cmd(struct fio_net_cmd *cmd)
410 size = sizeof(*je) + thread_number * sizeof(char);
414 if (!calc_thread_status(je, 1)) {
419 dprint(FD_NET, "server sending status\n");
421 je->nr_running = cpu_to_le32(je->nr_running);
422 je->nr_ramp = cpu_to_le32(je->nr_ramp);
423 je->nr_pending = cpu_to_le32(je->nr_pending);
424 je->files_open = cpu_to_le32(je->files_open);
425 je->m_rate = cpu_to_le32(je->m_rate);
426 je->t_rate = cpu_to_le32(je->t_rate);
427 je->m_iops = cpu_to_le32(je->m_iops);
428 je->t_iops = cpu_to_le32(je->t_iops);
430 for (i = 0; i < 2; i++) {
431 je->rate[i] = cpu_to_le32(je->rate[i]);
432 je->iops[i] = cpu_to_le32(je->iops[i]);
435 je->elapsed_sec = cpu_to_le32(je->nr_running);
436 je->eta_sec = cpu_to_le64(je->eta_sec);
438 fio_net_send_cmd(server_fd, FIO_NET_CMD_ETA, je, size, cmd->tag);
443 static int handle_command(struct fio_net_cmd *cmd)
447 dprint(FD_NET, "server: got op [%s], pdu=%u, tag=%lx\n",
448 fio_server_op(cmd->opcode), cmd->pdu_len, cmd->tag);
450 switch (cmd->opcode) {
451 case FIO_NET_CMD_QUIT:
452 fio_terminate_threads(TERMINATE_ALL);
454 case FIO_NET_CMD_EXIT:
457 case FIO_NET_CMD_JOB:
458 ret = handle_job_cmd(cmd);
460 case FIO_NET_CMD_JOBLINE:
461 ret = handle_jobline_cmd(cmd);
463 case FIO_NET_CMD_PROBE:
464 ret = handle_probe_cmd(cmd);
466 case FIO_NET_CMD_SEND_ETA:
467 ret = handle_send_eta_cmd(cmd);
470 log_err("fio: unknown opcode: %s\n",fio_server_op(cmd->opcode));
477 static int handle_connection(int sk, int block)
479 struct fio_net_cmd *cmd = NULL;
483 while (!exit_backend) {
484 struct pollfd pfd = {
491 ret = poll(&pfd, 1, 100);
495 log_err("fio: poll: %s\n", strerror(errno));
503 if (pfd.revents & POLLIN)
505 if (pfd.revents & (POLLERR|POLLHUP)) {
509 } while (!exit_backend);
514 cmd = fio_net_recv_cmd(sk);
520 ret = handle_command(cmd);
534 void fio_server_idle_loop(void)
537 handle_connection(server_fd, 0);
540 static int accept_loop(int listen_sk)
542 struct sockaddr_in addr;
543 fio_socklen_t len = sizeof(addr);
545 int ret, sk, flags, exitval = 0;
547 dprint(FD_NET, "server enter accept loop\n");
549 flags = fcntl(listen_sk, F_GETFL);
551 fcntl(listen_sk, F_SETFL, flags);
556 ret = poll(&pfd, 1, 100);
560 log_err("fio: poll: %s\n", strerror(errno));
565 if (pfd.revents & POLLIN)
567 } while (!exit_backend);
572 sk = accept(listen_sk, (struct sockaddr *) &addr, &len);
574 log_err("fio: accept: %s\n", strerror(errno));
578 dprint(FD_NET, "server: connect from %s\n", inet_ntoa(addr.sin_addr));
582 exitval = handle_connection(sk, 1);
594 int fio_server_text_output(const char *buf, size_t len)
597 return fio_net_send_cmd(server_fd, FIO_NET_CMD_TEXT, buf, len, 0);
599 return log_local_buf(buf, len);
602 static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
604 dst->max_val = cpu_to_le64(src->max_val);
605 dst->min_val = cpu_to_le64(src->min_val);
606 dst->samples = cpu_to_le64(src->samples);
609 * Encode to IEEE 754 for network transfer
611 dst->mean.u.i = __cpu_to_le64(fio_double_to_uint64(src->mean.u.f));
612 dst->S.u.i = __cpu_to_le64(fio_double_to_uint64(src->S.u.f));
615 static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
619 for (i = 0; i < 2; i++) {
620 dst->max_run[i] = cpu_to_le64(src->max_run[i]);
621 dst->min_run[i] = cpu_to_le64(src->min_run[i]);
622 dst->max_bw[i] = cpu_to_le64(src->max_bw[i]);
623 dst->min_bw[i] = cpu_to_le64(src->min_bw[i]);
624 dst->io_kb[i] = cpu_to_le64(src->io_kb[i]);
625 dst->agg[i] = cpu_to_le64(src->agg[i]);
628 dst->kb_base = cpu_to_le32(src->kb_base);
629 dst->groupid = cpu_to_le32(src->groupid);
633 * Send a CMD_TS, which packs struct thread_stat and group_run_stats
634 * into a single payload.
636 void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs)
641 dprint(FD_NET, "server sending end stats\n");
643 memset(&p, 0, sizeof(p));
645 strcpy(p.ts.name, ts->name);
646 strcpy(p.ts.verror, ts->verror);
647 strcpy(p.ts.description, ts->description);
649 p.ts.error = cpu_to_le32(ts->error);
650 p.ts.groupid = cpu_to_le32(ts->groupid);
651 p.ts.pid = cpu_to_le32(ts->pid);
652 p.ts.members = cpu_to_le32(ts->members);
654 for (i = 0; i < 2; i++) {
655 convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]);
656 convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]);
657 convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]);
658 convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]);
661 p.ts.usr_time = cpu_to_le64(ts->usr_time);
662 p.ts.sys_time = cpu_to_le64(ts->sys_time);
663 p.ts.ctx = cpu_to_le64(ts->ctx);
664 p.ts.minf = cpu_to_le64(ts->minf);
665 p.ts.majf = cpu_to_le64(ts->majf);
666 p.ts.clat_percentiles = cpu_to_le64(ts->clat_percentiles);
668 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
669 fio_fp64_t *fp = &p.ts.percentile_list[i];
671 fp->u.i = __cpu_to_le64(fio_double_to_uint64(fp->u.f));
674 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
675 p.ts.io_u_map[i] = cpu_to_le32(ts->io_u_map[i]);
676 p.ts.io_u_submit[i] = cpu_to_le32(ts->io_u_submit[i]);
677 p.ts.io_u_complete[i] = cpu_to_le32(ts->io_u_complete[i]);
680 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
681 p.ts.io_u_lat_u[i] = cpu_to_le32(ts->io_u_lat_u[i]);
682 p.ts.io_u_lat_m[i] = cpu_to_le32(ts->io_u_lat_m[i]);
685 for (i = 0; i < 2; i++)
686 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
687 p.ts.io_u_plat[i][j] = cpu_to_le32(ts->io_u_plat[i][j]);
689 for (i = 0; i < 3; i++) {
690 p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]);
691 p.ts.short_io_u[i] = cpu_to_le64(ts->short_io_u[i]);
694 p.ts.total_submit = cpu_to_le64(ts->total_submit);
695 p.ts.total_complete = cpu_to_le64(ts->total_complete);
697 for (i = 0; i < 2; i++) {
698 p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]);
699 p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]);
702 p.ts.total_run_time = cpu_to_le64(ts->total_run_time);
703 p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error);
704 p.ts.total_err_count = cpu_to_le64(ts->total_err_count);
705 p.ts.first_error = cpu_to_le32(ts->first_error);
706 p.ts.kb_base = cpu_to_le32(ts->kb_base);
708 convert_gs(&p.rs, rs);
710 fio_net_send_cmd(server_fd, FIO_NET_CMD_TS, &p, sizeof(p), 0);
713 void fio_server_send_gs(struct group_run_stats *rs)
715 struct group_run_stats gs;
717 dprint(FD_NET, "server sending group run stats\n");
720 fio_net_send_cmd(server_fd, FIO_NET_CMD_GS, &gs, sizeof(gs), 0);
723 int fio_server_log(const char *format, ...)
729 dprint(FD_NET, "server log\n");
731 va_start(args, format);
732 len = vsnprintf(buffer, sizeof(buffer), format, args);
735 return fio_server_text_output(buffer, len);
738 static int fio_init_server_ip(void)
742 sk = socket(AF_INET, SOCK_STREAM, 0);
744 log_err("fio: socket: %s\n", strerror(errno));
749 if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) {
750 log_err("fio: setsockopt: %s\n", strerror(errno));
755 if (setsockopt(sk, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) {
756 log_err("fio: setsockopt: %s\n", strerror(errno));
762 saddr_in.sin_family = AF_INET;
764 if (bind(sk, (struct sockaddr *) &saddr_in, sizeof(saddr_in)) < 0) {
765 log_err("fio: bind: %s\n", strerror(errno));
773 static int fio_init_server_sock(void)
775 struct sockaddr_un addr;
780 sk = socket(AF_UNIX, SOCK_STREAM, 0);
782 log_err("fio: socket: %s\n", strerror(errno));
788 memset(&addr, 0, sizeof(addr));
789 addr.sun_family = AF_UNIX;
790 strcpy(addr.sun_path, bind_sock);
793 len = sizeof(addr.sun_family) + strlen(bind_sock) + 1;
795 if (bind(sk, (struct sockaddr *) &addr, len) < 0) {
796 log_err("fio: bind: %s\n", strerror(errno));
805 static int fio_init_server_connection(void)
810 dprint(FD_NET, "starting server\n");
813 sk = fio_init_server_ip();
815 sk = fio_init_server_sock();
821 sprintf(bind_str, "%s:%u", inet_ntoa(saddr_in.sin_addr), fio_net_port);
823 strcpy(bind_str, bind_sock);
825 log_info("fio: server listening on %s\n", bind_str);
827 if (listen(sk, 0) < 0) {
828 log_err("fio: listen: %s\n", strerror(errno));
835 int fio_server_parse_string(const char *str, char **ptr, int *is_sock,
836 int *port, struct in_addr *inp)
840 *port = fio_net_port;
842 if (!strncmp(str, "sock:", 5)) {
843 *ptr = strdup(str + 5);
846 const char *host = str;
851 * Is it ip:<ip or host>:port
853 if (!strncmp(host, "ip:", 3))
855 else if (host[0] == ':') {
856 /* String is :port */
859 if (!lport || lport > 65535) {
860 log_err("fio: bad server port %u\n", port);
863 /* no hostname given, we are done */
869 * If no port seen yet, check if there's a last ':' at the end
872 portp = strchr(host, ':');
877 if (!lport || lport > 65535) {
878 log_err("fio: bad server port %u\n", port);
889 if (inet_aton(host, inp) != 1) {
890 struct hostent *hent;
892 hent = gethostbyname(host);
899 memcpy(inp, hent->h_addr, 4);
904 *port = fio_net_port;
910 * Server arg should be one of:
912 * sock:/path/to/socket
916 * Where sock uses unix domain sockets, and ip binds the server to
917 * a specific interface. If no arguments are given to the server, it
918 * uses IP and binds to 0.0.0.0.
921 static int fio_handle_server_arg(void)
923 int port = fio_net_port;
924 int is_sock, ret = 0;
926 saddr_in.sin_addr.s_addr = htonl(INADDR_ANY);
931 ret = fio_server_parse_string(fio_server_arg, &bind_sock, &is_sock,
932 &port, &saddr_in.sin_addr);
934 if (!is_sock && bind_sock) {
941 saddr_in.sin_port = htons(port);
945 static int fio_server(void)
949 dprint(FD_NET, "starting server\n");
951 if (fio_handle_server_arg())
954 sk = fio_init_server_connection();
958 ret = accept_loop(sk);
962 if (fio_server_arg) {
963 free(fio_server_arg);
964 fio_server_arg = NULL;
972 void fio_server_got_signal(int signal)
974 if (signal == SIGPIPE)
977 log_info("\nfio: terminating on signal %d\n", signal);
982 static int check_existing_pidfile(const char *pidfile)
989 if (stat(pidfile, &sb))
992 f = fopen(pidfile, "r");
996 if (fread(buf, sb.st_size, 1, f) <= 0) {
1003 if (kill(pid, SIGCONT) < 0)
1004 return errno != ESRCH;
1009 static int write_pid(pid_t pid, const char *pidfile)
1013 fpid = fopen(pidfile, "w");
1015 log_err("fio: failed opening pid file %s\n", pidfile);
1019 fprintf(fpid, "%u\n", (unsigned int) pid);
1025 * If pidfile is specified, background us.
1027 int fio_start_server(char *pidfile)
1033 return fio_server();
1035 if (check_existing_pidfile(pidfile)) {
1036 log_err("fio: pidfile %s exists and server appears alive\n",
1043 log_err("fio: failed server fork: %s", strerror(errno));
1047 int ret = write_pid(pid, pidfile);
1053 openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER);
1055 close(STDIN_FILENO);
1056 close(STDOUT_FILENO);
1057 close(STDERR_FILENO);
1069 void fio_server_set_arg(const char *arg)
1071 fio_server_arg = strdup(arg);