11 #include <sys/socket.h>
12 #include <netinet/in.h>
13 #include <arpa/inet.h>
20 #include "crc/crc16.h"
23 int fio_net_port = 8765;
27 static int server_fd = -1;
29 int fio_send_data(int sk, const void *p, unsigned int len)
31 assert(len <= sizeof(struct fio_net_cmd) + FIO_SERVER_MAX_PDU);
34 int ret = send(sk, p, len, 0);
44 else if (errno == EAGAIN || errno == EINTR)
46 } while (!exit_backend);
54 int fio_recv_data(int sk, void *p, unsigned int len)
57 int ret = recv(sk, p, len, MSG_WAITALL);
67 else if (errno == EAGAIN || errno == EINTR)
69 } while (!exit_backend);
77 static int verify_convert_cmd(struct fio_net_cmd *cmd)
81 cmd->cmd_crc16 = le16_to_cpu(cmd->cmd_crc16);
82 cmd->pdu_crc16 = le16_to_cpu(cmd->pdu_crc16);
84 crc = crc16(cmd, FIO_NET_CMD_CRC_SZ);
85 if (crc != cmd->cmd_crc16) {
86 log_err("fio: server bad crc on command (got %x, wanted %x)\n",
91 cmd->version = le16_to_cpu(cmd->version);
92 cmd->opcode = le16_to_cpu(cmd->opcode);
93 cmd->flags = le32_to_cpu(cmd->flags);
94 cmd->serial = le64_to_cpu(cmd->serial);
95 cmd->pdu_len = le32_to_cpu(cmd->pdu_len);
97 switch (cmd->version) {
101 log_err("fio: bad server cmd version %d\n", cmd->version);
105 if (cmd->pdu_len > FIO_SERVER_MAX_PDU) {
106 log_err("fio: command payload too large: %u\n", cmd->pdu_len);
114 * Read (and defragment, if necessary) incoming commands
116 struct fio_net_cmd *fio_net_recv_cmd(int sk, int block)
118 struct fio_net_cmd cmd, *cmdret = NULL;
119 size_t cmd_size = 0, pdu_offset = 0;
131 int timeo = block ? 100 : 10;
133 ret = poll(&pfd, 1, timeo);
137 log_err("fio: poll: %s\n", strerror(errno));
145 if (pfd.revents & POLLIN)
147 if (pfd.revents & (POLLERR|POLLHUP)) {
151 } while (ret >= 0 && block);
156 ret = fio_recv_data(sk, &cmd, sizeof(cmd));
160 /* We have a command, verify it and swap if need be */
161 ret = verify_convert_cmd(&cmd);
166 /* if this is text, add room for \0 at the end */
167 cmd_size = sizeof(cmd) + cmd.pdu_len + 1;
170 cmd_size += cmd.pdu_len;
172 cmdret = realloc(cmdret, cmd_size);
175 memcpy(cmdret, &cmd, sizeof(cmd));
177 assert(cmdret->opcode == cmd.opcode);
182 /* There's payload, get it */
183 pdu = (void *) cmdret->payload + pdu_offset;
184 ret = fio_recv_data(sk, pdu, cmd.pdu_len);
188 /* Verify payload crc */
189 crc = crc16(pdu, cmd.pdu_len);
190 if (crc != cmd.pdu_crc16) {
191 log_err("fio: server bad crc on payload ");
192 log_err("(got %x, wanted %x)\n", cmd.pdu_crc16, crc);
197 pdu_offset += cmd.pdu_len;
199 cmdret->pdu_len += cmd.pdu_len;
201 } while (cmd.flags & FIO_NET_CMD_F_MORE);
207 /* zero-terminate text input */
208 if (cmdret->pdu_len && (cmdret->opcode == FIO_NET_CMD_TEXT ||
209 cmdret->opcode == FIO_NET_CMD_JOB)) {
210 char *buf = (char *) cmdret->payload;
212 buf[cmdret->pdu_len ] = '\0';
214 /* frag flag is internal */
215 cmdret->flags &= ~FIO_NET_CMD_F_MORE;
221 void fio_net_cmd_crc(struct fio_net_cmd *cmd)
225 cmd->cmd_crc16 = __cpu_to_le16(crc16(cmd, FIO_NET_CMD_CRC_SZ));
227 pdu_len = le32_to_cpu(cmd->pdu_len);
229 cmd->pdu_crc16 = __cpu_to_le16(crc16(cmd->payload, pdu_len));
232 int fio_net_send_cmd(int fd, uint16_t opcode, const void *buf, off_t size)
234 struct fio_net_cmd *cmd;
240 if (this_len > FIO_SERVER_MAX_PDU)
241 this_len = FIO_SERVER_MAX_PDU;
243 cmd = malloc(sizeof(*cmd) + this_len);
245 fio_init_net_cmd(cmd, opcode, buf, this_len);
248 cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE);
250 fio_net_cmd_crc(cmd);
252 ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len);
256 } while (!ret && size);
261 int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t serial)
263 struct fio_net_cmd cmd = {
264 .version = __cpu_to_le16(FIO_SERVER_VER1),
265 .opcode = cpu_to_le16(opcode),
266 .serial = cpu_to_le64(serial),
269 fio_net_cmd_crc(&cmd);
271 return fio_send_data(sk, &cmd, sizeof(cmd));
274 static int fio_server_send_quit_cmd(void)
276 dprint(FD_NET, "server: sending quit\n");
277 return fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_QUIT, 0);
280 static int handle_job_cmd(struct fio_net_cmd *cmd)
282 char *buf = (char *) cmd->payload;
285 if (parse_jobs_ini(buf, 1, 0))
288 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_START, 0);
291 fio_server_send_quit_cmd();
296 static int handle_jobline_cmd(struct fio_net_cmd *cmd)
298 struct cmd_line_pdu *pdu = (struct cmd_line_pdu *) cmd->payload;
299 char *argv[FIO_NET_CMD_JOBLINE_ARGV];
302 pdu->argc = le16_to_cpu(pdu->argc);
304 dprint(FD_NET, "server: %d command line args\n", pdu->argc);
306 for (i = 0; i < pdu->argc; i++) {
307 argv[i] = (char *) pdu->argv[i];
308 dprint(FD_NET, "server: %d: %s\n", i, argv[i]);
311 if (parse_cmd_line(pdu->argc, argv))
314 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_START, 0);
317 fio_server_send_quit_cmd();
322 static int handle_probe_cmd(struct fio_net_cmd *cmd)
324 struct cmd_probe_pdu probe;
326 memset(&probe, 0, sizeof(probe));
327 gethostname((char *) probe.hostname, sizeof(probe.hostname));
328 #ifdef FIO_BIG_ENDIAN
331 probe.fio_major = FIO_MAJOR;
332 probe.fio_minor = FIO_MINOR;
333 probe.fio_patch = FIO_PATCH;
335 return fio_net_send_cmd(server_fd, FIO_NET_CMD_PROBE, &probe, sizeof(probe));
338 static int handle_command(struct fio_net_cmd *cmd)
342 dprint(FD_NET, "server: got opcode %d\n", cmd->opcode);
344 switch (cmd->opcode) {
345 case FIO_NET_CMD_QUIT:
346 fio_terminate_threads(TERMINATE_ALL);
348 case FIO_NET_CMD_EXIT:
351 case FIO_NET_CMD_JOB:
352 ret = handle_job_cmd(cmd);
354 case FIO_NET_CMD_JOBLINE:
355 ret = handle_jobline_cmd(cmd);
357 case FIO_NET_CMD_PROBE:
358 ret = handle_probe_cmd(cmd);
361 log_err("fio: unknown opcode: %d\n", cmd->opcode);
368 static int handle_connection(int sk, int block)
370 struct fio_net_cmd *cmd = NULL;
374 while (!exit_backend) {
375 cmd = fio_net_recv_cmd(sk, block);
381 ret = handle_command(cmd);
395 void fio_server_idle_loop(void)
398 handle_connection(server_fd, 0);
401 static int accept_loop(int listen_sk)
403 struct sockaddr_in addr;
404 fio_socklen_t len = sizeof(addr);
406 int ret, sk, flags, exitval = 0;
408 dprint(FD_NET, "server enter accept loop\n");
410 flags = fcntl(listen_sk, F_GETFL);
412 fcntl(listen_sk, F_SETFL, flags);
417 ret = poll(&pfd, 1, 100);
421 log_err("fio: poll: %s\n", strerror(errno));
426 if (pfd.revents & POLLIN)
428 } while (!exit_backend);
433 sk = accept(listen_sk, (struct sockaddr *) &addr, &len);
435 log_err("fio: accept: %s\n", strerror(errno));
439 dprint(FD_NET, "server: connect from %s\n", inet_ntoa(addr.sin_addr));
443 exitval = handle_connection(sk, 1);
455 int fio_server_text_output(const char *buf, unsigned int len)
458 return fio_net_send_cmd(server_fd, FIO_NET_CMD_TEXT, buf, len);
460 return fwrite(buf, len, 1, f_err);
463 static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
465 dst->max_val = cpu_to_le64(src->max_val);
466 dst->min_val = cpu_to_le64(src->min_val);
467 dst->samples = cpu_to_le64(src->samples);
470 * Encode to IEEE 754 for network transfer
472 dst->mean.u.i = __cpu_to_le64(fio_double_to_uint64(src->mean.u.f));
473 dst->S.u.i = __cpu_to_le64(fio_double_to_uint64(src->S.u.f));
476 static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
480 for (i = 0; i < 2; i++) {
481 dst->max_run[i] = cpu_to_le64(src->max_run[i]);
482 dst->min_run[i] = cpu_to_le64(src->min_run[i]);
483 dst->max_bw[i] = cpu_to_le64(src->max_bw[i]);
484 dst->min_bw[i] = cpu_to_le64(src->min_bw[i]);
485 dst->io_kb[i] = cpu_to_le64(src->io_kb[i]);
486 dst->agg[i] = cpu_to_le64(src->agg[i]);
489 dst->kb_base = cpu_to_le32(src->kb_base);
490 dst->groupid = cpu_to_le32(src->groupid);
494 * Send a CMD_TS, which packs struct thread_stat and group_run_stats
495 * into a single payload.
497 void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs)
502 dprint(FD_NET, "server sending end stats\n");
504 memset(&p, 0, sizeof(p));
506 strcpy(p.ts.name, ts->name);
507 strcpy(p.ts.verror, ts->verror);
508 strcpy(p.ts.description, ts->description);
510 p.ts.error = cpu_to_le32(ts->error);
511 p.ts.groupid = cpu_to_le32(ts->groupid);
512 p.ts.pid = cpu_to_le32(ts->pid);
513 p.ts.members = cpu_to_le32(ts->members);
515 for (i = 0; i < 2; i++) {
516 convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]);
517 convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]);
518 convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]);
519 convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]);
522 p.ts.usr_time = cpu_to_le64(ts->usr_time);
523 p.ts.sys_time = cpu_to_le64(ts->sys_time);
524 p.ts.ctx = cpu_to_le64(ts->ctx);
525 p.ts.minf = cpu_to_le64(ts->minf);
526 p.ts.majf = cpu_to_le64(ts->majf);
527 p.ts.clat_percentiles = cpu_to_le64(ts->clat_percentiles);
529 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
530 fio_fp64_t *fp = &p.ts.percentile_list[i];
532 fp->u.i = __cpu_to_le64(fio_double_to_uint64(fp->u.f));
535 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
536 p.ts.io_u_map[i] = cpu_to_le32(ts->io_u_map[i]);
537 p.ts.io_u_submit[i] = cpu_to_le32(ts->io_u_submit[i]);
538 p.ts.io_u_complete[i] = cpu_to_le32(ts->io_u_complete[i]);
541 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
542 p.ts.io_u_lat_u[i] = cpu_to_le32(ts->io_u_lat_u[i]);
543 p.ts.io_u_lat_m[i] = cpu_to_le32(ts->io_u_lat_m[i]);
546 for (i = 0; i < 2; i++)
547 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
548 p.ts.io_u_plat[i][j] = cpu_to_le32(ts->io_u_plat[i][j]);
550 for (i = 0; i < 3; i++) {
551 p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]);
552 p.ts.short_io_u[i] = cpu_to_le64(ts->short_io_u[i]);
555 p.ts.total_submit = cpu_to_le64(ts->total_submit);
556 p.ts.total_complete = cpu_to_le64(ts->total_complete);
558 for (i = 0; i < 2; i++) {
559 p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]);
560 p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]);
563 p.ts.total_run_time = cpu_to_le64(ts->total_run_time);
564 p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error);
565 p.ts.total_err_count = cpu_to_le64(ts->total_err_count);
566 p.ts.first_error = cpu_to_le32(ts->first_error);
567 p.ts.kb_base = cpu_to_le32(ts->kb_base);
569 convert_gs(&p.rs, rs);
571 fio_net_send_cmd(server_fd, FIO_NET_CMD_TS, &p, sizeof(p));
574 void fio_server_send_gs(struct group_run_stats *rs)
576 struct group_run_stats gs;
578 dprint(FD_NET, "server sending group run stats\n");
581 fio_net_send_cmd(server_fd, FIO_NET_CMD_GS, &gs, sizeof(gs));
584 void fio_server_send_status(void)
591 size = sizeof(*je) + thread_number * sizeof(char);
593 memset(buf, 0, size);
596 if (!calc_thread_status(je)) {
601 dprint(FD_NET, "server sending status\n");
603 je->nr_running = cpu_to_le32(je->nr_running);
604 je->nr_ramp = cpu_to_le32(je->nr_ramp);
605 je->nr_pending = cpu_to_le32(je->nr_pending);
606 je->files_open = cpu_to_le32(je->files_open);
607 je->m_rate = cpu_to_le32(je->m_rate);
608 je->t_rate = cpu_to_le32(je->t_rate);
609 je->m_iops = cpu_to_le32(je->m_iops);
610 je->t_iops = cpu_to_le32(je->t_iops);
612 for (i = 0; i < 2; i++) {
613 je->rate[i] = cpu_to_le32(je->rate[i]);
614 je->iops[i] = cpu_to_le32(je->iops[i]);
617 je->elapsed_sec = cpu_to_le32(je->nr_running);
618 je->eta_sec = cpu_to_le64(je->eta_sec);
620 fio_net_send_cmd(server_fd, FIO_NET_CMD_ETA, buf, size);
624 int fio_server_log(const char *format, ...)
630 dprint(FD_NET, "server log\n");
632 va_start(args, format);
633 len = vsnprintf(buffer, sizeof(buffer), format, args);
636 return fio_server_text_output(buffer, len);
639 static int fio_server(void)
641 struct sockaddr_in saddr_in;
642 struct sockaddr addr;
646 dprint(FD_NET, "starting server\n");
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_addr.s_addr = htonl(INADDR_ANY);
668 saddr_in.sin_port = htons(fio_net_port);
670 if (bind(sk, (struct sockaddr *) &saddr_in, sizeof(saddr_in)) < 0) {
671 log_err("fio: bind: %s\n", strerror(errno));
675 if (listen(sk, 1) < 0) {
676 log_err("fio: listen: %s\n", strerror(errno));
681 if (getsockname(sk, &addr, &len) < 0) {
682 log_err("fio: getsockname: %s\n", strerror(errno));
686 ret = accept_loop(sk);
691 static void sig_int(int sig)
693 fio_terminate_threads(TERMINATE_ALL);
697 static void server_signal_handler(void)
699 struct sigaction act;
701 memset(&act, 0, sizeof(act));
702 act.sa_handler = sig_int;
703 act.sa_flags = SA_RESTART;
704 sigaction(SIGINT, &act, NULL);
706 memset(&act, 0, sizeof(act));
707 act.sa_handler = sig_int;
708 act.sa_flags = SA_RESTART;
709 sigaction(SIGTERM, &act, NULL);
712 int fio_start_server(int daemonize)
716 server_signal_handler();
721 openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER);
724 syslog(LOG_ERR, "failed server fork");
731 close(STDOUT_FILENO);
732 close(STDERR_FILENO);