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->serial = le64_to_cpu(cmd->serial);
102 cmd->pdu_len = le32_to_cpu(cmd->pdu_len);
104 switch (cmd->version) {
105 case FIO_SERVER_VER3:
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)
210 struct fio_net_cmd *cmd;
216 if (this_len > FIO_SERVER_MAX_PDU)
217 this_len = FIO_SERVER_MAX_PDU;
219 cmd = malloc(sizeof(*cmd) + this_len);
221 fio_init_net_cmd(cmd, opcode, buf, this_len);
224 cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE);
226 fio_net_cmd_crc(cmd);
228 ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len);
232 } while (!ret && size);
237 int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t serial)
239 struct fio_net_cmd cmd;
241 fio_init_net_cmd(&cmd, opcode, NULL, 0);
242 fio_net_cmd_crc(&cmd);
244 return fio_send_data(sk, &cmd, sizeof(cmd));
247 static int fio_server_send_quit_cmd(void)
249 dprint(FD_NET, "server: sending quit\n");
250 return fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_QUIT, 0);
253 static int handle_job_cmd(struct fio_net_cmd *cmd)
255 char *buf = (char *) cmd->payload;
258 if (parse_jobs_ini(buf, 1, 0)) {
259 fio_server_send_quit_cmd();
263 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_START, 0);
266 fio_server_send_quit_cmd();
271 static int handle_jobline_cmd(struct fio_net_cmd *cmd)
273 struct cmd_line_pdu *pdu = (struct cmd_line_pdu *) cmd->payload;
274 char *argv[FIO_NET_CMD_JOBLINE_ARGV];
277 pdu->argc = le16_to_cpu(pdu->argc);
279 dprint(FD_NET, "server: %d command line args\n", pdu->argc);
281 for (i = 0; i < pdu->argc; i++) {
282 argv[i] = (char *) pdu->argv[i];
283 dprint(FD_NET, "server: %d: %s\n", i, argv[i]);
286 if (parse_cmd_line(pdu->argc, argv)) {
287 fio_server_send_quit_cmd();
291 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_START, 0);
294 fio_server_send_quit_cmd();
299 static int handle_probe_cmd(struct fio_net_cmd *cmd)
301 struct cmd_probe_pdu probe;
303 memset(&probe, 0, sizeof(probe));
304 gethostname((char *) probe.hostname, sizeof(probe.hostname));
305 #ifdef FIO_BIG_ENDIAN
308 probe.fio_major = FIO_MAJOR;
309 probe.fio_minor = FIO_MINOR;
310 probe.fio_patch = FIO_PATCH;
313 probe.arch = FIO_ARCH;
315 return fio_net_send_cmd(server_fd, FIO_NET_CMD_PROBE, &probe, sizeof(probe));
318 static int handle_command(struct fio_net_cmd *cmd)
322 dprint(FD_NET, "server: got opcode %d\n", cmd->opcode);
324 switch (cmd->opcode) {
325 case FIO_NET_CMD_QUIT:
326 fio_terminate_threads(TERMINATE_ALL);
328 case FIO_NET_CMD_EXIT:
331 case FIO_NET_CMD_JOB:
332 ret = handle_job_cmd(cmd);
334 case FIO_NET_CMD_JOBLINE:
335 ret = handle_jobline_cmd(cmd);
337 case FIO_NET_CMD_PROBE:
338 ret = handle_probe_cmd(cmd);
341 log_err("fio: unknown opcode: %d\n", cmd->opcode);
348 static int handle_connection(int sk, int block)
350 struct fio_net_cmd *cmd = NULL;
354 while (!exit_backend) {
355 struct pollfd pfd = {
362 ret = poll(&pfd, 1, 100);
366 log_err("fio: poll: %s\n", strerror(errno));
374 if (pfd.revents & POLLIN)
376 if (pfd.revents & (POLLERR|POLLHUP)) {
380 } while (!exit_backend);
385 cmd = fio_net_recv_cmd(sk);
391 ret = handle_command(cmd);
405 void fio_server_idle_loop(void)
408 handle_connection(server_fd, 0);
411 static int accept_loop(int listen_sk)
413 struct sockaddr_in addr;
414 fio_socklen_t len = sizeof(addr);
416 int ret, sk, flags, exitval = 0;
418 dprint(FD_NET, "server enter accept loop\n");
420 flags = fcntl(listen_sk, F_GETFL);
422 fcntl(listen_sk, F_SETFL, flags);
427 ret = poll(&pfd, 1, 100);
431 log_err("fio: poll: %s\n", strerror(errno));
436 if (pfd.revents & POLLIN)
438 } while (!exit_backend);
443 sk = accept(listen_sk, (struct sockaddr *) &addr, &len);
445 log_err("fio: accept: %s\n", strerror(errno));
449 dprint(FD_NET, "server: connect from %s\n", inet_ntoa(addr.sin_addr));
453 exitval = handle_connection(sk, 1);
465 int fio_server_text_output(const char *buf, unsigned int len)
468 return fio_net_send_cmd(server_fd, FIO_NET_CMD_TEXT, buf, len);
470 return fwrite(buf, len, 1, f_err);
473 static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
475 dst->max_val = cpu_to_le64(src->max_val);
476 dst->min_val = cpu_to_le64(src->min_val);
477 dst->samples = cpu_to_le64(src->samples);
480 * Encode to IEEE 754 for network transfer
482 dst->mean.u.i = __cpu_to_le64(fio_double_to_uint64(src->mean.u.f));
483 dst->S.u.i = __cpu_to_le64(fio_double_to_uint64(src->S.u.f));
486 static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
490 for (i = 0; i < 2; i++) {
491 dst->max_run[i] = cpu_to_le64(src->max_run[i]);
492 dst->min_run[i] = cpu_to_le64(src->min_run[i]);
493 dst->max_bw[i] = cpu_to_le64(src->max_bw[i]);
494 dst->min_bw[i] = cpu_to_le64(src->min_bw[i]);
495 dst->io_kb[i] = cpu_to_le64(src->io_kb[i]);
496 dst->agg[i] = cpu_to_le64(src->agg[i]);
499 dst->kb_base = cpu_to_le32(src->kb_base);
500 dst->groupid = cpu_to_le32(src->groupid);
504 * Send a CMD_TS, which packs struct thread_stat and group_run_stats
505 * into a single payload.
507 void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs)
512 dprint(FD_NET, "server sending end stats\n");
514 memset(&p, 0, sizeof(p));
516 strcpy(p.ts.name, ts->name);
517 strcpy(p.ts.verror, ts->verror);
518 strcpy(p.ts.description, ts->description);
520 p.ts.error = cpu_to_le32(ts->error);
521 p.ts.groupid = cpu_to_le32(ts->groupid);
522 p.ts.pid = cpu_to_le32(ts->pid);
523 p.ts.members = cpu_to_le32(ts->members);
525 for (i = 0; i < 2; i++) {
526 convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]);
527 convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]);
528 convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]);
529 convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]);
532 p.ts.usr_time = cpu_to_le64(ts->usr_time);
533 p.ts.sys_time = cpu_to_le64(ts->sys_time);
534 p.ts.ctx = cpu_to_le64(ts->ctx);
535 p.ts.minf = cpu_to_le64(ts->minf);
536 p.ts.majf = cpu_to_le64(ts->majf);
537 p.ts.clat_percentiles = cpu_to_le64(ts->clat_percentiles);
539 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
540 fio_fp64_t *fp = &p.ts.percentile_list[i];
542 fp->u.i = __cpu_to_le64(fio_double_to_uint64(fp->u.f));
545 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
546 p.ts.io_u_map[i] = cpu_to_le32(ts->io_u_map[i]);
547 p.ts.io_u_submit[i] = cpu_to_le32(ts->io_u_submit[i]);
548 p.ts.io_u_complete[i] = cpu_to_le32(ts->io_u_complete[i]);
551 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
552 p.ts.io_u_lat_u[i] = cpu_to_le32(ts->io_u_lat_u[i]);
553 p.ts.io_u_lat_m[i] = cpu_to_le32(ts->io_u_lat_m[i]);
556 for (i = 0; i < 2; i++)
557 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
558 p.ts.io_u_plat[i][j] = cpu_to_le32(ts->io_u_plat[i][j]);
560 for (i = 0; i < 3; i++) {
561 p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]);
562 p.ts.short_io_u[i] = cpu_to_le64(ts->short_io_u[i]);
565 p.ts.total_submit = cpu_to_le64(ts->total_submit);
566 p.ts.total_complete = cpu_to_le64(ts->total_complete);
568 for (i = 0; i < 2; i++) {
569 p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]);
570 p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]);
573 p.ts.total_run_time = cpu_to_le64(ts->total_run_time);
574 p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error);
575 p.ts.total_err_count = cpu_to_le64(ts->total_err_count);
576 p.ts.first_error = cpu_to_le32(ts->first_error);
577 p.ts.kb_base = cpu_to_le32(ts->kb_base);
579 convert_gs(&p.rs, rs);
581 fio_net_send_cmd(server_fd, FIO_NET_CMD_TS, &p, sizeof(p));
584 void fio_server_send_gs(struct group_run_stats *rs)
586 struct group_run_stats gs;
588 dprint(FD_NET, "server sending group run stats\n");
591 fio_net_send_cmd(server_fd, FIO_NET_CMD_GS, &gs, sizeof(gs));
594 void fio_server_send_status(void)
601 size = sizeof(*je) + thread_number * sizeof(char);
603 memset(buf, 0, size);
606 if (!calc_thread_status(je)) {
611 dprint(FD_NET, "server sending status\n");
613 je->nr_running = cpu_to_le32(je->nr_running);
614 je->nr_ramp = cpu_to_le32(je->nr_ramp);
615 je->nr_pending = cpu_to_le32(je->nr_pending);
616 je->files_open = cpu_to_le32(je->files_open);
617 je->m_rate = cpu_to_le32(je->m_rate);
618 je->t_rate = cpu_to_le32(je->t_rate);
619 je->m_iops = cpu_to_le32(je->m_iops);
620 je->t_iops = cpu_to_le32(je->t_iops);
622 for (i = 0; i < 2; i++) {
623 je->rate[i] = cpu_to_le32(je->rate[i]);
624 je->iops[i] = cpu_to_le32(je->iops[i]);
627 je->elapsed_sec = cpu_to_le32(je->nr_running);
628 je->eta_sec = cpu_to_le64(je->eta_sec);
630 fio_net_send_cmd(server_fd, FIO_NET_CMD_ETA, buf, size);
634 int fio_server_log(const char *format, ...)
640 dprint(FD_NET, "server log\n");
642 va_start(args, format);
643 len = vsnprintf(buffer, sizeof(buffer), format, args);
646 return fio_server_text_output(buffer, len);
649 static int fio_init_server_ip(void)
653 sk = socket(AF_INET, SOCK_STREAM, 0);
655 log_err("fio: socket: %s\n", strerror(errno));
660 if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) {
661 log_err("fio: setsockopt: %s\n", strerror(errno));
666 if (setsockopt(sk, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) {
667 log_err("fio: setsockopt: %s\n", strerror(errno));
673 saddr_in.sin_family = AF_INET;
675 if (bind(sk, (struct sockaddr *) &saddr_in, sizeof(saddr_in)) < 0) {
676 log_err("fio: bind: %s\n", strerror(errno));
684 static int fio_init_server_sock(void)
686 struct sockaddr_un addr;
691 sk = socket(AF_UNIX, SOCK_STREAM, 0);
693 log_err("fio: socket: %s\n", strerror(errno));
699 memset(&addr, 0, sizeof(addr));
700 addr.sun_family = AF_UNIX;
701 strcpy(addr.sun_path, bind_sock);
704 len = sizeof(addr.sun_family) + strlen(bind_sock) + 1;
706 if (bind(sk, (struct sockaddr *) &addr, len) < 0) {
707 log_err("fio: bind: %s\n", strerror(errno));
716 static int fio_init_server_connection(void)
721 dprint(FD_NET, "starting server\n");
724 sk = fio_init_server_ip();
726 sk = fio_init_server_sock();
732 sprintf(bind_str, "%s:%u", inet_ntoa(saddr_in.sin_addr), fio_net_port);
734 strcpy(bind_str, bind_sock);
736 log_info("fio: server listening on %s\n", bind_str);
738 if (listen(sk, 1) < 0) {
739 log_err("fio: listen: %s\n", strerror(errno));
746 int fio_server_parse_string(const char *str, char **ptr, int *is_sock,
747 int *port, struct in_addr *inp)
751 *port = fio_net_port;
753 if (!strncmp(str, "sock:", 5)) {
754 *ptr = strdup(str + 5);
757 const char *host = str;
762 * Is it ip:<ip or host>:port
764 if (!strncmp(host, "ip:", 3))
766 else if (host[0] == ':') {
767 /* String is :port */
770 if (!lport || lport > 65535) {
771 log_err("fio: bad server port %u\n", port);
774 /* no hostname given, we are done */
780 * If no port seen yet, check if there's a last ':' at the end
783 portp = strchr(host, ':');
788 if (!lport || lport > 65535) {
789 log_err("fio: bad server port %u\n", port);
800 if (inet_aton(host, inp) != 1) {
801 struct hostent *hent;
803 hent = gethostbyname(host);
810 memcpy(inp, hent->h_addr, 4);
815 *port = fio_net_port;
821 * Server arg should be one of:
823 * sock:/path/to/socket
827 * Where sock uses unix domain sockets, and ip binds the server to
828 * a specific interface. If no arguments are given to the server, it
829 * uses IP and binds to 0.0.0.0.
832 static int fio_handle_server_arg(void)
834 int port = fio_net_port;
835 int is_sock, ret = 0;
837 saddr_in.sin_addr.s_addr = htonl(INADDR_ANY);
842 ret = fio_server_parse_string(fio_server_arg, &bind_sock, &is_sock,
843 &port, &saddr_in.sin_addr);
845 if (!is_sock && bind_sock) {
852 saddr_in.sin_port = htons(port);
856 static int fio_server(void)
860 dprint(FD_NET, "starting server\n");
862 if (fio_handle_server_arg())
865 sk = fio_init_server_connection();
869 ret = accept_loop(sk);
873 if (fio_server_arg) {
874 free(fio_server_arg);
875 fio_server_arg = NULL;
883 static void sig_int(int sig)
885 fio_terminate_threads(TERMINATE_ALL);
889 static void server_signal_handler(void)
891 struct sigaction act;
893 memset(&act, 0, sizeof(act));
894 act.sa_handler = sig_int;
895 act.sa_flags = SA_RESTART;
896 sigaction(SIGINT, &act, NULL);
898 memset(&act, 0, sizeof(act));
899 act.sa_handler = sig_int;
900 act.sa_flags = SA_RESTART;
901 sigaction(SIGTERM, &act, NULL);
904 int fio_start_server(int daemonize)
908 server_signal_handler();
913 openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER);
916 syslog(LOG_ERR, "failed server fork");
923 close(STDOUT_FILENO);
924 close(STDERR_FILENO);
931 void fio_server_set_arg(const char *arg)
933 fio_server_arg = strdup(arg);