11 #include <sys/socket.h>
14 #include <netinet/in.h>
15 #include <arpa/inet.h>
22 #include "crc/crc16.h"
25 int fio_net_port = 8765;
29 static int server_fd = -1;
30 static char *fio_server_arg;
31 static char *bind_sock;
32 static struct sockaddr_in saddr_in;
34 int fio_send_data(int sk, const void *p, unsigned int len)
36 assert(len <= sizeof(struct fio_net_cmd) + FIO_SERVER_MAX_PDU);
39 int ret = send(sk, p, len, 0);
49 else if (errno == EAGAIN || errno == EINTR)
51 } while (!exit_backend);
59 int fio_recv_data(int sk, void *p, unsigned int len)
62 int ret = recv(sk, p, len, MSG_WAITALL);
72 else if (errno == EAGAIN || errno == EINTR)
74 } while (!exit_backend);
82 static int verify_convert_cmd(struct fio_net_cmd *cmd)
86 cmd->cmd_crc16 = le16_to_cpu(cmd->cmd_crc16);
87 cmd->pdu_crc16 = le16_to_cpu(cmd->pdu_crc16);
89 crc = crc16(cmd, FIO_NET_CMD_CRC_SZ);
90 if (crc != cmd->cmd_crc16) {
91 log_err("fio: server bad crc on command (got %x, wanted %x)\n",
96 cmd->version = le16_to_cpu(cmd->version);
97 cmd->opcode = le16_to_cpu(cmd->opcode);
98 cmd->flags = le32_to_cpu(cmd->flags);
99 cmd->serial = le64_to_cpu(cmd->serial);
100 cmd->pdu_len = le32_to_cpu(cmd->pdu_len);
102 switch (cmd->version) {
103 case FIO_SERVER_VER2:
106 log_err("fio: bad server cmd version %d\n", cmd->version);
110 if (cmd->pdu_len > FIO_SERVER_MAX_PDU) {
111 log_err("fio: command payload too large: %u\n", cmd->pdu_len);
119 * Read (and defragment, if necessary) incoming commands
121 struct fio_net_cmd *fio_net_recv_cmd(int sk)
123 struct fio_net_cmd cmd, *cmdret = NULL;
124 size_t cmd_size = 0, pdu_offset = 0;
130 ret = fio_recv_data(sk, &cmd, sizeof(cmd));
134 /* We have a command, verify it and swap if need be */
135 ret = verify_convert_cmd(&cmd);
140 /* if this is text, add room for \0 at the end */
141 cmd_size = sizeof(cmd) + cmd.pdu_len + 1;
144 cmd_size += cmd.pdu_len;
146 cmdret = realloc(cmdret, cmd_size);
149 memcpy(cmdret, &cmd, sizeof(cmd));
151 assert(cmdret->opcode == cmd.opcode);
156 /* There's payload, get it */
157 pdu = (void *) cmdret->payload + pdu_offset;
158 ret = fio_recv_data(sk, pdu, cmd.pdu_len);
162 /* Verify payload crc */
163 crc = crc16(pdu, cmd.pdu_len);
164 if (crc != cmd.pdu_crc16) {
165 log_err("fio: server bad crc on payload ");
166 log_err("(got %x, wanted %x)\n", cmd.pdu_crc16, crc);
171 pdu_offset += cmd.pdu_len;
173 cmdret->pdu_len += cmd.pdu_len;
175 } while (cmd.flags & FIO_NET_CMD_F_MORE);
181 /* zero-terminate text input */
182 if (cmdret->pdu_len && (cmdret->opcode == FIO_NET_CMD_TEXT ||
183 cmdret->opcode == FIO_NET_CMD_JOB)) {
184 char *buf = (char *) cmdret->payload;
186 buf[cmdret->pdu_len ] = '\0';
188 /* frag flag is internal */
189 cmdret->flags &= ~FIO_NET_CMD_F_MORE;
195 void fio_net_cmd_crc(struct fio_net_cmd *cmd)
199 cmd->cmd_crc16 = __cpu_to_le16(crc16(cmd, FIO_NET_CMD_CRC_SZ));
201 pdu_len = le32_to_cpu(cmd->pdu_len);
203 cmd->pdu_crc16 = __cpu_to_le16(crc16(cmd->payload, pdu_len));
206 int fio_net_send_cmd(int fd, uint16_t opcode, const void *buf, off_t size)
208 struct fio_net_cmd *cmd;
214 if (this_len > FIO_SERVER_MAX_PDU)
215 this_len = FIO_SERVER_MAX_PDU;
217 cmd = malloc(sizeof(*cmd) + this_len);
219 fio_init_net_cmd(cmd, opcode, buf, this_len);
222 cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE);
224 fio_net_cmd_crc(cmd);
226 ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len);
230 } while (!ret && size);
235 int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t serial)
237 struct fio_net_cmd cmd;
239 fio_init_net_cmd(&cmd, opcode, NULL, 0);
240 fio_net_cmd_crc(&cmd);
242 return fio_send_data(sk, &cmd, sizeof(cmd));
245 static int fio_server_send_quit_cmd(void)
247 dprint(FD_NET, "server: sending quit\n");
248 return fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_QUIT, 0);
251 static int handle_job_cmd(struct fio_net_cmd *cmd)
253 char *buf = (char *) cmd->payload;
256 if (parse_jobs_ini(buf, 1, 0)) {
257 fio_server_send_quit_cmd();
261 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_START, 0);
264 fio_server_send_quit_cmd();
269 static int handle_jobline_cmd(struct fio_net_cmd *cmd)
271 struct cmd_line_pdu *pdu = (struct cmd_line_pdu *) cmd->payload;
272 char *argv[FIO_NET_CMD_JOBLINE_ARGV];
275 pdu->argc = le16_to_cpu(pdu->argc);
277 dprint(FD_NET, "server: %d command line args\n", pdu->argc);
279 for (i = 0; i < pdu->argc; i++) {
280 argv[i] = (char *) pdu->argv[i];
281 dprint(FD_NET, "server: %d: %s\n", i, argv[i]);
284 if (parse_cmd_line(pdu->argc, argv)) {
285 fio_server_send_quit_cmd();
289 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_START, 0);
292 fio_server_send_quit_cmd();
297 static int handle_probe_cmd(struct fio_net_cmd *cmd)
299 struct cmd_probe_pdu probe;
301 memset(&probe, 0, sizeof(probe));
302 gethostname((char *) probe.hostname, sizeof(probe.hostname));
303 #ifdef FIO_BIG_ENDIAN
306 probe.fio_major = FIO_MAJOR;
307 probe.fio_minor = FIO_MINOR;
308 probe.fio_patch = FIO_PATCH;
310 return fio_net_send_cmd(server_fd, FIO_NET_CMD_PROBE, &probe, sizeof(probe));
313 static int handle_command(struct fio_net_cmd *cmd)
317 dprint(FD_NET, "server: got opcode %d\n", cmd->opcode);
319 switch (cmd->opcode) {
320 case FIO_NET_CMD_QUIT:
321 fio_terminate_threads(TERMINATE_ALL);
323 case FIO_NET_CMD_EXIT:
326 case FIO_NET_CMD_JOB:
327 ret = handle_job_cmd(cmd);
329 case FIO_NET_CMD_JOBLINE:
330 ret = handle_jobline_cmd(cmd);
332 case FIO_NET_CMD_PROBE:
333 ret = handle_probe_cmd(cmd);
336 log_err("fio: unknown opcode: %d\n", cmd->opcode);
343 static int handle_connection(int sk, int block)
345 struct fio_net_cmd *cmd = NULL;
349 while (!exit_backend) {
350 struct pollfd pfd = {
357 ret = poll(&pfd, 1, 100);
361 log_err("fio: poll: %s\n", strerror(errno));
369 if (pfd.revents & POLLIN)
371 if (pfd.revents & (POLLERR|POLLHUP)) {
375 } while (!exit_backend);
380 cmd = fio_net_recv_cmd(sk);
386 ret = handle_command(cmd);
400 void fio_server_idle_loop(void)
403 handle_connection(server_fd, 0);
406 static int accept_loop(int listen_sk)
408 struct sockaddr_in addr;
409 fio_socklen_t len = sizeof(addr);
411 int ret, sk, flags, exitval = 0;
413 dprint(FD_NET, "server enter accept loop\n");
415 flags = fcntl(listen_sk, F_GETFL);
417 fcntl(listen_sk, F_SETFL, flags);
422 ret = poll(&pfd, 1, 100);
426 log_err("fio: poll: %s\n", strerror(errno));
431 if (pfd.revents & POLLIN)
433 } while (!exit_backend);
438 sk = accept(listen_sk, (struct sockaddr *) &addr, &len);
440 log_err("fio: accept: %s\n", strerror(errno));
444 dprint(FD_NET, "server: connect from %s\n", inet_ntoa(addr.sin_addr));
448 exitval = handle_connection(sk, 1);
460 int fio_server_text_output(const char *buf, unsigned int len)
463 return fio_net_send_cmd(server_fd, FIO_NET_CMD_TEXT, buf, len);
465 return fwrite(buf, len, 1, f_err);
468 static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
470 dst->max_val = cpu_to_le64(src->max_val);
471 dst->min_val = cpu_to_le64(src->min_val);
472 dst->samples = cpu_to_le64(src->samples);
475 * Encode to IEEE 754 for network transfer
477 dst->mean.u.i = __cpu_to_le64(fio_double_to_uint64(src->mean.u.f));
478 dst->S.u.i = __cpu_to_le64(fio_double_to_uint64(src->S.u.f));
481 static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
485 for (i = 0; i < 2; i++) {
486 dst->max_run[i] = cpu_to_le64(src->max_run[i]);
487 dst->min_run[i] = cpu_to_le64(src->min_run[i]);
488 dst->max_bw[i] = cpu_to_le64(src->max_bw[i]);
489 dst->min_bw[i] = cpu_to_le64(src->min_bw[i]);
490 dst->io_kb[i] = cpu_to_le64(src->io_kb[i]);
491 dst->agg[i] = cpu_to_le64(src->agg[i]);
494 dst->kb_base = cpu_to_le32(src->kb_base);
495 dst->groupid = cpu_to_le32(src->groupid);
499 * Send a CMD_TS, which packs struct thread_stat and group_run_stats
500 * into a single payload.
502 void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs)
507 dprint(FD_NET, "server sending end stats\n");
509 memset(&p, 0, sizeof(p));
511 strcpy(p.ts.name, ts->name);
512 strcpy(p.ts.verror, ts->verror);
513 strcpy(p.ts.description, ts->description);
515 p.ts.error = cpu_to_le32(ts->error);
516 p.ts.groupid = cpu_to_le32(ts->groupid);
517 p.ts.pid = cpu_to_le32(ts->pid);
518 p.ts.members = cpu_to_le32(ts->members);
520 for (i = 0; i < 2; i++) {
521 convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]);
522 convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]);
523 convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]);
524 convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]);
527 p.ts.usr_time = cpu_to_le64(ts->usr_time);
528 p.ts.sys_time = cpu_to_le64(ts->sys_time);
529 p.ts.ctx = cpu_to_le64(ts->ctx);
530 p.ts.minf = cpu_to_le64(ts->minf);
531 p.ts.majf = cpu_to_le64(ts->majf);
532 p.ts.clat_percentiles = cpu_to_le64(ts->clat_percentiles);
534 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
535 fio_fp64_t *fp = &p.ts.percentile_list[i];
537 fp->u.i = __cpu_to_le64(fio_double_to_uint64(fp->u.f));
540 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
541 p.ts.io_u_map[i] = cpu_to_le32(ts->io_u_map[i]);
542 p.ts.io_u_submit[i] = cpu_to_le32(ts->io_u_submit[i]);
543 p.ts.io_u_complete[i] = cpu_to_le32(ts->io_u_complete[i]);
546 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
547 p.ts.io_u_lat_u[i] = cpu_to_le32(ts->io_u_lat_u[i]);
548 p.ts.io_u_lat_m[i] = cpu_to_le32(ts->io_u_lat_m[i]);
551 for (i = 0; i < 2; i++)
552 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
553 p.ts.io_u_plat[i][j] = cpu_to_le32(ts->io_u_plat[i][j]);
555 for (i = 0; i < 3; i++) {
556 p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]);
557 p.ts.short_io_u[i] = cpu_to_le64(ts->short_io_u[i]);
560 p.ts.total_submit = cpu_to_le64(ts->total_submit);
561 p.ts.total_complete = cpu_to_le64(ts->total_complete);
563 for (i = 0; i < 2; i++) {
564 p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]);
565 p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]);
568 p.ts.total_run_time = cpu_to_le64(ts->total_run_time);
569 p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error);
570 p.ts.total_err_count = cpu_to_le64(ts->total_err_count);
571 p.ts.first_error = cpu_to_le32(ts->first_error);
572 p.ts.kb_base = cpu_to_le32(ts->kb_base);
574 convert_gs(&p.rs, rs);
576 fio_net_send_cmd(server_fd, FIO_NET_CMD_TS, &p, sizeof(p));
579 void fio_server_send_gs(struct group_run_stats *rs)
581 struct group_run_stats gs;
583 dprint(FD_NET, "server sending group run stats\n");
586 fio_net_send_cmd(server_fd, FIO_NET_CMD_GS, &gs, sizeof(gs));
589 void fio_server_send_status(void)
596 size = sizeof(*je) + thread_number * sizeof(char);
598 memset(buf, 0, size);
601 if (!calc_thread_status(je)) {
606 dprint(FD_NET, "server sending status\n");
608 je->nr_running = cpu_to_le32(je->nr_running);
609 je->nr_ramp = cpu_to_le32(je->nr_ramp);
610 je->nr_pending = cpu_to_le32(je->nr_pending);
611 je->files_open = cpu_to_le32(je->files_open);
612 je->m_rate = cpu_to_le32(je->m_rate);
613 je->t_rate = cpu_to_le32(je->t_rate);
614 je->m_iops = cpu_to_le32(je->m_iops);
615 je->t_iops = cpu_to_le32(je->t_iops);
617 for (i = 0; i < 2; i++) {
618 je->rate[i] = cpu_to_le32(je->rate[i]);
619 je->iops[i] = cpu_to_le32(je->iops[i]);
622 je->elapsed_sec = cpu_to_le32(je->nr_running);
623 je->eta_sec = cpu_to_le64(je->eta_sec);
625 fio_net_send_cmd(server_fd, FIO_NET_CMD_ETA, buf, size);
629 int fio_server_log(const char *format, ...)
635 dprint(FD_NET, "server log\n");
637 va_start(args, format);
638 len = vsnprintf(buffer, sizeof(buffer), format, args);
641 return fio_server_text_output(buffer, len);
644 static int fio_init_server_ip(void)
648 sk = socket(AF_INET, SOCK_STREAM, 0);
650 log_err("fio: socket: %s\n", strerror(errno));
655 if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) {
656 log_err("fio: setsockopt: %s\n", strerror(errno));
660 if (setsockopt(sk, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) {
661 log_err("fio: setsockopt: %s\n", strerror(errno));
666 saddr_in.sin_family = AF_INET;
667 saddr_in.sin_port = htons(fio_net_port);
669 if (bind(sk, (struct sockaddr *) &saddr_in, sizeof(saddr_in)) < 0) {
670 log_err("fio: bind: %s\n", strerror(errno));
677 static int fio_init_server_sock(void)
679 struct sockaddr_un addr;
684 sk = socket(AF_UNIX, SOCK_STREAM, 0);
686 log_err("fio: socket: %s\n", strerror(errno));
692 memset(&addr, 0, sizeof(addr));
693 addr.sun_family = AF_UNIX;
694 strcpy(addr.sun_path, bind_sock);
697 len = sizeof(addr.sun_family) + strlen(bind_sock) + 1;
699 if (bind(sk, (struct sockaddr *) &addr, len) < 0) {
700 log_err("fio: bind: %s\n", strerror(errno));
708 static int fio_init_server_connection(void)
712 dprint(FD_NET, "starting server\n");
715 sk = fio_init_server_ip();
717 sk = fio_init_server_sock();
722 if (listen(sk, 1) < 0) {
723 log_err("fio: listen: %s\n", strerror(errno));
731 * Server arg should be one of:
733 * sock:/path/to/socket
737 * Where sock uses unix domain sockets, and ip binds the server to
738 * a specific interface. If no arguments are given to the server, it
739 * uses IP and binds to 0.0.0.0.
742 static int fio_handle_server_arg(void)
744 saddr_in.sin_addr.s_addr = htonl(INADDR_ANY);
748 if (!strncmp(fio_server_arg, "sock:", 5)) {
749 bind_sock = fio_server_arg += 5;
752 char *host = fio_server_arg;
754 if (!strncmp(host, "ip:", 3))
757 if (inet_aton(host, &saddr_in.sin_addr) != 1) {
758 struct hostent *hent;
760 hent = gethostbyname(host);
762 memcpy(&saddr_in.sin_addr, hent->h_addr, 4);
768 static int fio_server(void)
772 dprint(FD_NET, "starting server\n");
774 if (fio_handle_server_arg())
777 sk = fio_init_server_connection();
781 ret = accept_loop(sk);
785 if (fio_server_arg) {
786 free(fio_server_arg);
787 fio_server_arg = NULL;
793 static void sig_int(int sig)
795 fio_terminate_threads(TERMINATE_ALL);
799 static void server_signal_handler(void)
801 struct sigaction act;
803 memset(&act, 0, sizeof(act));
804 act.sa_handler = sig_int;
805 act.sa_flags = SA_RESTART;
806 sigaction(SIGINT, &act, NULL);
808 memset(&act, 0, sizeof(act));
809 act.sa_handler = sig_int;
810 act.sa_flags = SA_RESTART;
811 sigaction(SIGTERM, &act, NULL);
814 int fio_start_server(int daemonize)
818 server_signal_handler();
823 openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER);
826 syslog(LOG_ERR, "failed server fork");
833 close(STDOUT_FILENO);
834 close(STDERR_FILENO);
841 void fio_server_add_arg(const char *arg)
843 fio_server_arg = strdup(arg);