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->tag = le64_to_cpu(cmd->tag);
102 cmd->pdu_len = le32_to_cpu(cmd->pdu_len);
104 switch (cmd->version) {
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,
211 struct fio_net_cmd *cmd;
217 if (this_len > FIO_SERVER_MAX_PDU)
218 this_len = FIO_SERVER_MAX_PDU;
220 cmd = malloc(sizeof(*cmd) + this_len);
222 fio_init_net_cmd(cmd, opcode, buf, this_len, tag);
225 cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE);
227 fio_net_cmd_crc(cmd);
229 ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len);
233 } while (!ret && size);
238 int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t tag)
240 struct fio_net_cmd cmd;
242 fio_init_net_cmd(&cmd, opcode, NULL, 0, tag);
243 fio_net_cmd_crc(&cmd);
245 return fio_send_data(sk, &cmd, sizeof(cmd));
248 static int fio_server_send_quit_cmd(void)
250 dprint(FD_NET, "server: sending quit\n");
251 return fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_QUIT, 0);
254 static int handle_job_cmd(struct fio_net_cmd *cmd)
256 char *buf = (char *) cmd->payload;
259 if (parse_jobs_ini(buf, 1, 0)) {
260 fio_server_send_quit_cmd();
264 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_START, 0);
267 fio_server_send_quit_cmd();
272 static int handle_jobline_cmd(struct fio_net_cmd *cmd)
274 void *pdu = cmd->payload;
275 struct cmd_single_line_pdu *cslp;
276 struct cmd_line_pdu *clp;
277 unsigned long offset;
282 clp->lines = le16_to_cpu(clp->lines);
283 argv = malloc(clp->lines * sizeof(char *));
284 offset = sizeof(*clp);
286 dprint(FD_NET, "server: %d command line args\n", clp->lines);
288 for (i = 0; i < clp->lines; i++) {
290 argv[i] = (char *) cslp->text;
292 offset += sizeof(*cslp) + le16_to_cpu(cslp->len);
293 dprint(FD_NET, "server: %d: %s\n", i, argv[i]);
296 if (parse_cmd_line(clp->lines, argv)) {
297 fio_server_send_quit_cmd();
304 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_START, 0);
307 fio_server_send_quit_cmd();
312 static int handle_probe_cmd(struct fio_net_cmd *cmd)
314 struct cmd_probe_pdu probe;
316 memset(&probe, 0, sizeof(probe));
317 gethostname((char *) probe.hostname, sizeof(probe.hostname));
318 #ifdef FIO_BIG_ENDIAN
321 probe.fio_major = FIO_MAJOR;
322 probe.fio_minor = FIO_MINOR;
323 probe.fio_patch = FIO_PATCH;
326 probe.arch = FIO_ARCH;
328 return fio_net_send_cmd(server_fd, FIO_NET_CMD_PROBE, &probe, sizeof(probe), 0);
331 static int handle_send_eta_cmd(struct fio_net_cmd *cmd)
338 size = sizeof(*je) + thread_number * sizeof(char);
340 memset(buf, 0, size);
343 if (!calc_thread_status(je, 1)) {
348 dprint(FD_NET, "server sending status\n");
350 je->nr_running = cpu_to_le32(je->nr_running);
351 je->nr_ramp = cpu_to_le32(je->nr_ramp);
352 je->nr_pending = cpu_to_le32(je->nr_pending);
353 je->files_open = cpu_to_le32(je->files_open);
354 je->m_rate = cpu_to_le32(je->m_rate);
355 je->t_rate = cpu_to_le32(je->t_rate);
356 je->m_iops = cpu_to_le32(je->m_iops);
357 je->t_iops = cpu_to_le32(je->t_iops);
359 for (i = 0; i < 2; i++) {
360 je->rate[i] = cpu_to_le32(je->rate[i]);
361 je->iops[i] = cpu_to_le32(je->iops[i]);
364 je->elapsed_sec = cpu_to_le32(je->nr_running);
365 je->eta_sec = cpu_to_le64(je->eta_sec);
367 fio_net_send_cmd(server_fd, FIO_NET_CMD_ETA, buf, size, cmd->tag);
372 static int handle_command(struct fio_net_cmd *cmd)
376 dprint(FD_NET, "server: got opcode %d\n", cmd->opcode);
378 switch (cmd->opcode) {
379 case FIO_NET_CMD_QUIT:
380 fio_terminate_threads(TERMINATE_ALL);
382 case FIO_NET_CMD_EXIT:
385 case FIO_NET_CMD_JOB:
386 ret = handle_job_cmd(cmd);
388 case FIO_NET_CMD_JOBLINE:
389 ret = handle_jobline_cmd(cmd);
391 case FIO_NET_CMD_PROBE:
392 ret = handle_probe_cmd(cmd);
394 case FIO_NET_CMD_SEND_ETA:
395 ret = handle_send_eta_cmd(cmd);
398 log_err("fio: unknown opcode: %d\n", cmd->opcode);
405 static int handle_connection(int sk, int block)
407 struct fio_net_cmd *cmd = NULL;
411 while (!exit_backend) {
412 struct pollfd pfd = {
419 ret = poll(&pfd, 1, 100);
423 log_err("fio: poll: %s\n", strerror(errno));
431 if (pfd.revents & POLLIN)
433 if (pfd.revents & (POLLERR|POLLHUP)) {
437 } while (!exit_backend);
442 cmd = fio_net_recv_cmd(sk);
448 ret = handle_command(cmd);
462 void fio_server_idle_loop(void)
465 handle_connection(server_fd, 0);
468 static int accept_loop(int listen_sk)
470 struct sockaddr_in addr;
471 fio_socklen_t len = sizeof(addr);
473 int ret, sk, flags, exitval = 0;
475 dprint(FD_NET, "server enter accept loop\n");
477 flags = fcntl(listen_sk, F_GETFL);
479 fcntl(listen_sk, F_SETFL, flags);
484 ret = poll(&pfd, 1, 100);
488 log_err("fio: poll: %s\n", strerror(errno));
493 if (pfd.revents & POLLIN)
495 } while (!exit_backend);
500 sk = accept(listen_sk, (struct sockaddr *) &addr, &len);
502 log_err("fio: accept: %s\n", strerror(errno));
506 dprint(FD_NET, "server: connect from %s\n", inet_ntoa(addr.sin_addr));
510 exitval = handle_connection(sk, 1);
522 int fio_server_text_output(const char *buf, unsigned int len)
525 return fio_net_send_cmd(server_fd, FIO_NET_CMD_TEXT, buf, len, 0);
527 return fwrite(buf, len, 1, f_err);
530 static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
532 dst->max_val = cpu_to_le64(src->max_val);
533 dst->min_val = cpu_to_le64(src->min_val);
534 dst->samples = cpu_to_le64(src->samples);
537 * Encode to IEEE 754 for network transfer
539 dst->mean.u.i = __cpu_to_le64(fio_double_to_uint64(src->mean.u.f));
540 dst->S.u.i = __cpu_to_le64(fio_double_to_uint64(src->S.u.f));
543 static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
547 for (i = 0; i < 2; i++) {
548 dst->max_run[i] = cpu_to_le64(src->max_run[i]);
549 dst->min_run[i] = cpu_to_le64(src->min_run[i]);
550 dst->max_bw[i] = cpu_to_le64(src->max_bw[i]);
551 dst->min_bw[i] = cpu_to_le64(src->min_bw[i]);
552 dst->io_kb[i] = cpu_to_le64(src->io_kb[i]);
553 dst->agg[i] = cpu_to_le64(src->agg[i]);
556 dst->kb_base = cpu_to_le32(src->kb_base);
557 dst->groupid = cpu_to_le32(src->groupid);
561 * Send a CMD_TS, which packs struct thread_stat and group_run_stats
562 * into a single payload.
564 void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs)
569 dprint(FD_NET, "server sending end stats\n");
571 memset(&p, 0, sizeof(p));
573 strcpy(p.ts.name, ts->name);
574 strcpy(p.ts.verror, ts->verror);
575 strcpy(p.ts.description, ts->description);
577 p.ts.error = cpu_to_le32(ts->error);
578 p.ts.groupid = cpu_to_le32(ts->groupid);
579 p.ts.pid = cpu_to_le32(ts->pid);
580 p.ts.members = cpu_to_le32(ts->members);
582 for (i = 0; i < 2; i++) {
583 convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]);
584 convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]);
585 convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]);
586 convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]);
589 p.ts.usr_time = cpu_to_le64(ts->usr_time);
590 p.ts.sys_time = cpu_to_le64(ts->sys_time);
591 p.ts.ctx = cpu_to_le64(ts->ctx);
592 p.ts.minf = cpu_to_le64(ts->minf);
593 p.ts.majf = cpu_to_le64(ts->majf);
594 p.ts.clat_percentiles = cpu_to_le64(ts->clat_percentiles);
596 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
597 fio_fp64_t *fp = &p.ts.percentile_list[i];
599 fp->u.i = __cpu_to_le64(fio_double_to_uint64(fp->u.f));
602 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
603 p.ts.io_u_map[i] = cpu_to_le32(ts->io_u_map[i]);
604 p.ts.io_u_submit[i] = cpu_to_le32(ts->io_u_submit[i]);
605 p.ts.io_u_complete[i] = cpu_to_le32(ts->io_u_complete[i]);
608 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
609 p.ts.io_u_lat_u[i] = cpu_to_le32(ts->io_u_lat_u[i]);
610 p.ts.io_u_lat_m[i] = cpu_to_le32(ts->io_u_lat_m[i]);
613 for (i = 0; i < 2; i++)
614 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
615 p.ts.io_u_plat[i][j] = cpu_to_le32(ts->io_u_plat[i][j]);
617 for (i = 0; i < 3; i++) {
618 p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]);
619 p.ts.short_io_u[i] = cpu_to_le64(ts->short_io_u[i]);
622 p.ts.total_submit = cpu_to_le64(ts->total_submit);
623 p.ts.total_complete = cpu_to_le64(ts->total_complete);
625 for (i = 0; i < 2; i++) {
626 p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]);
627 p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]);
630 p.ts.total_run_time = cpu_to_le64(ts->total_run_time);
631 p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error);
632 p.ts.total_err_count = cpu_to_le64(ts->total_err_count);
633 p.ts.first_error = cpu_to_le32(ts->first_error);
634 p.ts.kb_base = cpu_to_le32(ts->kb_base);
636 convert_gs(&p.rs, rs);
638 fio_net_send_cmd(server_fd, FIO_NET_CMD_TS, &p, sizeof(p), 0);
641 void fio_server_send_gs(struct group_run_stats *rs)
643 struct group_run_stats gs;
645 dprint(FD_NET, "server sending group run stats\n");
648 fio_net_send_cmd(server_fd, FIO_NET_CMD_GS, &gs, sizeof(gs), 0);
651 int fio_server_log(const char *format, ...)
657 dprint(FD_NET, "server log\n");
659 va_start(args, format);
660 len = vsnprintf(buffer, sizeof(buffer), format, args);
663 return fio_server_text_output(buffer, len);
666 static int fio_init_server_ip(void)
670 sk = socket(AF_INET, SOCK_STREAM, 0);
672 log_err("fio: socket: %s\n", strerror(errno));
677 if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) {
678 log_err("fio: setsockopt: %s\n", strerror(errno));
683 if (setsockopt(sk, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) {
684 log_err("fio: setsockopt: %s\n", strerror(errno));
690 saddr_in.sin_family = AF_INET;
692 if (bind(sk, (struct sockaddr *) &saddr_in, sizeof(saddr_in)) < 0) {
693 log_err("fio: bind: %s\n", strerror(errno));
701 static int fio_init_server_sock(void)
703 struct sockaddr_un addr;
708 sk = socket(AF_UNIX, SOCK_STREAM, 0);
710 log_err("fio: socket: %s\n", strerror(errno));
716 memset(&addr, 0, sizeof(addr));
717 addr.sun_family = AF_UNIX;
718 strcpy(addr.sun_path, bind_sock);
721 len = sizeof(addr.sun_family) + strlen(bind_sock) + 1;
723 if (bind(sk, (struct sockaddr *) &addr, len) < 0) {
724 log_err("fio: bind: %s\n", strerror(errno));
733 static int fio_init_server_connection(void)
738 dprint(FD_NET, "starting server\n");
741 sk = fio_init_server_ip();
743 sk = fio_init_server_sock();
749 sprintf(bind_str, "%s:%u", inet_ntoa(saddr_in.sin_addr), fio_net_port);
751 strcpy(bind_str, bind_sock);
753 log_info("fio: server listening on %s\n", bind_str);
755 if (listen(sk, 1) < 0) {
756 log_err("fio: listen: %s\n", strerror(errno));
763 int fio_server_parse_string(const char *str, char **ptr, int *is_sock,
764 int *port, struct in_addr *inp)
768 *port = fio_net_port;
770 if (!strncmp(str, "sock:", 5)) {
771 *ptr = strdup(str + 5);
774 const char *host = str;
779 * Is it ip:<ip or host>:port
781 if (!strncmp(host, "ip:", 3))
783 else if (host[0] == ':') {
784 /* String is :port */
787 if (!lport || lport > 65535) {
788 log_err("fio: bad server port %u\n", port);
791 /* no hostname given, we are done */
797 * If no port seen yet, check if there's a last ':' at the end
800 portp = strchr(host, ':');
805 if (!lport || lport > 65535) {
806 log_err("fio: bad server port %u\n", port);
817 if (inet_aton(host, inp) != 1) {
818 struct hostent *hent;
820 hent = gethostbyname(host);
827 memcpy(inp, hent->h_addr, 4);
832 *port = fio_net_port;
838 * Server arg should be one of:
840 * sock:/path/to/socket
844 * Where sock uses unix domain sockets, and ip binds the server to
845 * a specific interface. If no arguments are given to the server, it
846 * uses IP and binds to 0.0.0.0.
849 static int fio_handle_server_arg(void)
851 int port = fio_net_port;
852 int is_sock, ret = 0;
854 saddr_in.sin_addr.s_addr = htonl(INADDR_ANY);
859 ret = fio_server_parse_string(fio_server_arg, &bind_sock, &is_sock,
860 &port, &saddr_in.sin_addr);
862 if (!is_sock && bind_sock) {
869 saddr_in.sin_port = htons(port);
873 static int fio_server(void)
877 dprint(FD_NET, "starting server\n");
879 if (fio_handle_server_arg())
882 sk = fio_init_server_connection();
886 ret = accept_loop(sk);
890 if (fio_server_arg) {
891 free(fio_server_arg);
892 fio_server_arg = NULL;
900 static void sig_int(int sig)
902 fio_terminate_threads(TERMINATE_ALL);
906 static void server_signal_handler(void)
908 struct sigaction act;
910 memset(&act, 0, sizeof(act));
911 act.sa_handler = sig_int;
912 act.sa_flags = SA_RESTART;
913 sigaction(SIGINT, &act, NULL);
915 memset(&act, 0, sizeof(act));
916 act.sa_handler = sig_int;
917 act.sa_flags = SA_RESTART;
918 sigaction(SIGTERM, &act, NULL);
921 int fio_start_server(int daemonize)
925 server_signal_handler();
930 openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER);
933 syslog(LOG_ERR, "failed server fork");
940 close(STDOUT_FILENO);
941 close(STDERR_FILENO);
948 void fio_server_set_arg(const char *arg)
950 fio_server_arg = strdup(arg);