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)
118 struct fio_net_cmd cmd, *cmdret = NULL;
119 size_t cmd_size = 0, pdu_offset = 0;
125 ret = fio_recv_data(sk, &cmd, sizeof(cmd));
129 /* We have a command, verify it and swap if need be */
130 ret = verify_convert_cmd(&cmd);
135 /* if this is text, add room for \0 at the end */
136 cmd_size = sizeof(cmd) + cmd.pdu_len + 1;
139 cmd_size += cmd.pdu_len;
141 cmdret = realloc(cmdret, cmd_size);
144 memcpy(cmdret, &cmd, sizeof(cmd));
146 assert(cmdret->opcode == cmd.opcode);
151 /* There's payload, get it */
152 pdu = (void *) cmdret->payload + pdu_offset;
153 ret = fio_recv_data(sk, pdu, cmd.pdu_len);
157 /* Verify payload crc */
158 crc = crc16(pdu, cmd.pdu_len);
159 if (crc != cmd.pdu_crc16) {
160 log_err("fio: server bad crc on payload ");
161 log_err("(got %x, wanted %x)\n", cmd.pdu_crc16, crc);
166 pdu_offset += cmd.pdu_len;
168 cmdret->pdu_len += cmd.pdu_len;
170 } while (cmd.flags & FIO_NET_CMD_F_MORE);
176 /* zero-terminate text input */
177 if (cmdret->pdu_len && (cmdret->opcode == FIO_NET_CMD_TEXT ||
178 cmdret->opcode == FIO_NET_CMD_JOB)) {
179 char *buf = (char *) cmdret->payload;
181 buf[cmdret->pdu_len ] = '\0';
183 /* frag flag is internal */
184 cmdret->flags &= ~FIO_NET_CMD_F_MORE;
190 void fio_net_cmd_crc(struct fio_net_cmd *cmd)
194 cmd->cmd_crc16 = __cpu_to_le16(crc16(cmd, FIO_NET_CMD_CRC_SZ));
196 pdu_len = le32_to_cpu(cmd->pdu_len);
198 cmd->pdu_crc16 = __cpu_to_le16(crc16(cmd->payload, pdu_len));
201 int fio_net_send_cmd(int fd, uint16_t opcode, const void *buf, off_t size)
203 struct fio_net_cmd *cmd;
209 if (this_len > FIO_SERVER_MAX_PDU)
210 this_len = FIO_SERVER_MAX_PDU;
212 cmd = malloc(sizeof(*cmd) + this_len);
214 fio_init_net_cmd(cmd, opcode, buf, this_len);
217 cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE);
219 fio_net_cmd_crc(cmd);
221 ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len);
225 } while (!ret && size);
230 int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t serial)
232 struct fio_net_cmd cmd = {
233 .version = __cpu_to_le16(FIO_SERVER_VER1),
234 .opcode = cpu_to_le16(opcode),
235 .serial = cpu_to_le64(serial),
238 fio_net_cmd_crc(&cmd);
240 return fio_send_data(sk, &cmd, sizeof(cmd));
243 static int fio_server_send_quit_cmd(void)
245 dprint(FD_NET, "server: sending quit\n");
246 return fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_QUIT, 0);
249 static int handle_job_cmd(struct fio_net_cmd *cmd)
251 char *buf = (char *) cmd->payload;
254 if (parse_jobs_ini(buf, 1, 0)) {
255 fio_server_send_quit_cmd();
259 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_START, 0);
262 fio_server_send_quit_cmd();
267 static int handle_jobline_cmd(struct fio_net_cmd *cmd)
269 struct cmd_line_pdu *pdu = (struct cmd_line_pdu *) cmd->payload;
270 char *argv[FIO_NET_CMD_JOBLINE_ARGV];
273 pdu->argc = le16_to_cpu(pdu->argc);
275 dprint(FD_NET, "server: %d command line args\n", pdu->argc);
277 for (i = 0; i < pdu->argc; i++) {
278 argv[i] = (char *) pdu->argv[i];
279 dprint(FD_NET, "server: %d: %s\n", i, argv[i]);
282 if (parse_cmd_line(pdu->argc, argv)) {
283 fio_server_send_quit_cmd();
287 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_START, 0);
290 fio_server_send_quit_cmd();
295 static int handle_probe_cmd(struct fio_net_cmd *cmd)
297 struct cmd_probe_pdu probe;
299 memset(&probe, 0, sizeof(probe));
300 gethostname((char *) probe.hostname, sizeof(probe.hostname));
301 #ifdef FIO_BIG_ENDIAN
304 probe.fio_major = FIO_MAJOR;
305 probe.fio_minor = FIO_MINOR;
306 probe.fio_patch = FIO_PATCH;
308 return fio_net_send_cmd(server_fd, FIO_NET_CMD_PROBE, &probe, sizeof(probe));
311 static int handle_command(struct fio_net_cmd *cmd)
315 dprint(FD_NET, "server: got opcode %d\n", cmd->opcode);
317 switch (cmd->opcode) {
318 case FIO_NET_CMD_QUIT:
319 fio_terminate_threads(TERMINATE_ALL);
321 case FIO_NET_CMD_EXIT:
324 case FIO_NET_CMD_JOB:
325 ret = handle_job_cmd(cmd);
327 case FIO_NET_CMD_JOBLINE:
328 ret = handle_jobline_cmd(cmd);
330 case FIO_NET_CMD_PROBE:
331 ret = handle_probe_cmd(cmd);
334 log_err("fio: unknown opcode: %d\n", cmd->opcode);
341 static int handle_connection(int sk, int block)
343 struct fio_net_cmd *cmd = NULL;
347 while (!exit_backend) {
348 struct pollfd pfd = {
355 ret = poll(&pfd, 1, 100);
359 log_err("fio: poll: %s\n", strerror(errno));
367 if (pfd.revents & POLLIN)
369 if (pfd.revents & (POLLERR|POLLHUP)) {
373 } while (!exit_backend);
378 cmd = fio_net_recv_cmd(sk);
384 ret = handle_command(cmd);
398 void fio_server_idle_loop(void)
401 handle_connection(server_fd, 0);
404 static int accept_loop(int listen_sk)
406 struct sockaddr_in addr;
407 fio_socklen_t len = sizeof(addr);
409 int ret, sk, flags, exitval = 0;
411 dprint(FD_NET, "server enter accept loop\n");
413 flags = fcntl(listen_sk, F_GETFL);
415 fcntl(listen_sk, F_SETFL, flags);
420 ret = poll(&pfd, 1, 100);
424 log_err("fio: poll: %s\n", strerror(errno));
429 if (pfd.revents & POLLIN)
431 } while (!exit_backend);
436 sk = accept(listen_sk, (struct sockaddr *) &addr, &len);
438 log_err("fio: accept: %s\n", strerror(errno));
442 dprint(FD_NET, "server: connect from %s\n", inet_ntoa(addr.sin_addr));
446 exitval = handle_connection(sk, 1);
458 int fio_server_text_output(const char *buf, unsigned int len)
461 return fio_net_send_cmd(server_fd, FIO_NET_CMD_TEXT, buf, len);
463 return fwrite(buf, len, 1, f_err);
466 static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
468 dst->max_val = cpu_to_le64(src->max_val);
469 dst->min_val = cpu_to_le64(src->min_val);
470 dst->samples = cpu_to_le64(src->samples);
473 * Encode to IEEE 754 for network transfer
475 dst->mean.u.i = __cpu_to_le64(fio_double_to_uint64(src->mean.u.f));
476 dst->S.u.i = __cpu_to_le64(fio_double_to_uint64(src->S.u.f));
479 static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
483 for (i = 0; i < 2; i++) {
484 dst->max_run[i] = cpu_to_le64(src->max_run[i]);
485 dst->min_run[i] = cpu_to_le64(src->min_run[i]);
486 dst->max_bw[i] = cpu_to_le64(src->max_bw[i]);
487 dst->min_bw[i] = cpu_to_le64(src->min_bw[i]);
488 dst->io_kb[i] = cpu_to_le64(src->io_kb[i]);
489 dst->agg[i] = cpu_to_le64(src->agg[i]);
492 dst->kb_base = cpu_to_le32(src->kb_base);
493 dst->groupid = cpu_to_le32(src->groupid);
497 * Send a CMD_TS, which packs struct thread_stat and group_run_stats
498 * into a single payload.
500 void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs)
505 dprint(FD_NET, "server sending end stats\n");
507 memset(&p, 0, sizeof(p));
509 strcpy(p.ts.name, ts->name);
510 strcpy(p.ts.verror, ts->verror);
511 strcpy(p.ts.description, ts->description);
513 p.ts.error = cpu_to_le32(ts->error);
514 p.ts.groupid = cpu_to_le32(ts->groupid);
515 p.ts.pid = cpu_to_le32(ts->pid);
516 p.ts.members = cpu_to_le32(ts->members);
518 for (i = 0; i < 2; i++) {
519 convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]);
520 convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]);
521 convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]);
522 convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]);
525 p.ts.usr_time = cpu_to_le64(ts->usr_time);
526 p.ts.sys_time = cpu_to_le64(ts->sys_time);
527 p.ts.ctx = cpu_to_le64(ts->ctx);
528 p.ts.minf = cpu_to_le64(ts->minf);
529 p.ts.majf = cpu_to_le64(ts->majf);
530 p.ts.clat_percentiles = cpu_to_le64(ts->clat_percentiles);
532 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
533 fio_fp64_t *fp = &p.ts.percentile_list[i];
535 fp->u.i = __cpu_to_le64(fio_double_to_uint64(fp->u.f));
538 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
539 p.ts.io_u_map[i] = cpu_to_le32(ts->io_u_map[i]);
540 p.ts.io_u_submit[i] = cpu_to_le32(ts->io_u_submit[i]);
541 p.ts.io_u_complete[i] = cpu_to_le32(ts->io_u_complete[i]);
544 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
545 p.ts.io_u_lat_u[i] = cpu_to_le32(ts->io_u_lat_u[i]);
546 p.ts.io_u_lat_m[i] = cpu_to_le32(ts->io_u_lat_m[i]);
549 for (i = 0; i < 2; i++)
550 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
551 p.ts.io_u_plat[i][j] = cpu_to_le32(ts->io_u_plat[i][j]);
553 for (i = 0; i < 3; i++) {
554 p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]);
555 p.ts.short_io_u[i] = cpu_to_le64(ts->short_io_u[i]);
558 p.ts.total_submit = cpu_to_le64(ts->total_submit);
559 p.ts.total_complete = cpu_to_le64(ts->total_complete);
561 for (i = 0; i < 2; i++) {
562 p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]);
563 p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]);
566 p.ts.total_run_time = cpu_to_le64(ts->total_run_time);
567 p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error);
568 p.ts.total_err_count = cpu_to_le64(ts->total_err_count);
569 p.ts.first_error = cpu_to_le32(ts->first_error);
570 p.ts.kb_base = cpu_to_le32(ts->kb_base);
572 convert_gs(&p.rs, rs);
574 fio_net_send_cmd(server_fd, FIO_NET_CMD_TS, &p, sizeof(p));
577 void fio_server_send_gs(struct group_run_stats *rs)
579 struct group_run_stats gs;
581 dprint(FD_NET, "server sending group run stats\n");
584 fio_net_send_cmd(server_fd, FIO_NET_CMD_GS, &gs, sizeof(gs));
587 void fio_server_send_status(void)
594 size = sizeof(*je) + thread_number * sizeof(char);
596 memset(buf, 0, size);
599 if (!calc_thread_status(je)) {
604 dprint(FD_NET, "server sending status\n");
606 je->nr_running = cpu_to_le32(je->nr_running);
607 je->nr_ramp = cpu_to_le32(je->nr_ramp);
608 je->nr_pending = cpu_to_le32(je->nr_pending);
609 je->files_open = cpu_to_le32(je->files_open);
610 je->m_rate = cpu_to_le32(je->m_rate);
611 je->t_rate = cpu_to_le32(je->t_rate);
612 je->m_iops = cpu_to_le32(je->m_iops);
613 je->t_iops = cpu_to_le32(je->t_iops);
615 for (i = 0; i < 2; i++) {
616 je->rate[i] = cpu_to_le32(je->rate[i]);
617 je->iops[i] = cpu_to_le32(je->iops[i]);
620 je->elapsed_sec = cpu_to_le32(je->nr_running);
621 je->eta_sec = cpu_to_le64(je->eta_sec);
623 fio_net_send_cmd(server_fd, FIO_NET_CMD_ETA, buf, size);
627 int fio_server_log(const char *format, ...)
633 dprint(FD_NET, "server log\n");
635 va_start(args, format);
636 len = vsnprintf(buffer, sizeof(buffer), format, args);
639 return fio_server_text_output(buffer, len);
642 static int fio_server(void)
644 struct sockaddr_in saddr_in;
645 struct sockaddr addr;
649 dprint(FD_NET, "starting server\n");
651 sk = socket(AF_INET, SOCK_STREAM, 0);
653 log_err("fio: socket: %s\n", strerror(errno));
658 if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) {
659 log_err("fio: setsockopt: %s\n", strerror(errno));
663 if (setsockopt(sk, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) {
664 log_err("fio: setsockopt: %s\n", strerror(errno));
669 saddr_in.sin_family = AF_INET;
670 saddr_in.sin_addr.s_addr = htonl(INADDR_ANY);
671 saddr_in.sin_port = htons(fio_net_port);
673 if (bind(sk, (struct sockaddr *) &saddr_in, sizeof(saddr_in)) < 0) {
674 log_err("fio: bind: %s\n", strerror(errno));
678 if (listen(sk, 1) < 0) {
679 log_err("fio: listen: %s\n", strerror(errno));
684 if (getsockname(sk, &addr, &len) < 0) {
685 log_err("fio: getsockname: %s\n", strerror(errno));
689 ret = accept_loop(sk);
694 static void sig_int(int sig)
696 fio_terminate_threads(TERMINATE_ALL);
700 static void server_signal_handler(void)
702 struct sigaction act;
704 memset(&act, 0, sizeof(act));
705 act.sa_handler = sig_int;
706 act.sa_flags = SA_RESTART;
707 sigaction(SIGINT, &act, NULL);
709 memset(&act, 0, sizeof(act));
710 act.sa_handler = sig_int;
711 act.sa_flags = SA_RESTART;
712 sigaction(SIGTERM, &act, NULL);
715 int fio_start_server(int daemonize)
719 server_signal_handler();
724 openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER);
727 syslog(LOG_ERR, "failed server fork");
734 close(STDOUT_FILENO);
735 close(STDERR_FILENO);