client.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <unistd.h>
   4 #include <limits.h>
   5 #include <errno.h>
   6 #include <fcntl.h>
   7 #include <sys/poll.h>
   8 #include <sys/types.h>
   9 #include <sys/stat.h>
  10 #include <sys/wait.h>
  11 #include <sys/socket.h>
  12 #include <sys/un.h>
  13 #include <netinet/in.h>
  14 #include <arpa/inet.h>
  15 #include <netdb.h>
  16 #include <signal.h>
  17 #ifdef CONFIG_ZLIB
  18 #include <zlib.h>
  19 #endif
  20
  21 #include "fio.h"
  22 #include "client.h"
  23 #include "server.h"
  24 #include "flist.h"
  25 #include "hash.h"
  26
  27 static void handle_du(struct fio_client *client, struct fio_net_cmd *cmd);
  28 static void handle_ts(struct fio_client *client, struct fio_net_cmd *cmd);
  29 static void handle_gs(struct fio_client *client, struct fio_net_cmd *cmd);
  30 static void handle_probe(struct fio_client *client, struct fio_net_cmd *cmd);
  31 static void handle_text(struct fio_client *client, struct fio_net_cmd *cmd);
  32 static void handle_stop(struct fio_client *client, struct fio_net_cmd *cmd);
  33 static void handle_start(struct fio_client *client, struct fio_net_cmd *cmd);
  34
  35 struct client_ops fio_client_ops = {
  36         .text           = handle_text,
  37         .disk_util      = handle_du,
  38         .thread_status  = handle_ts,
  39         .group_stats    = handle_gs,
  40         .stop           = handle_stop,
  41         .start          = handle_start,
  42         .eta            = display_thread_status,
  43         .probe          = handle_probe,
  44         .eta_msec       = FIO_CLIENT_DEF_ETA_MSEC,
  45         .client_type    = FIO_CLIENT_TYPE_CLI,
  46 };
  47
  48 static struct timeval eta_tv;
  49
  50 static FLIST_HEAD(client_list);
  51 static FLIST_HEAD(eta_list);
  52
  53 static FLIST_HEAD(arg_list);
  54
  55 struct thread_stat client_ts;
  56 struct group_run_stats client_gs;
  57 int sum_stat_clients;
  58
  59 static int sum_stat_nr;
  60 static struct json_object *root = NULL;
  61 static struct json_array *clients_array = NULL;
  62 static struct json_array *du_array = NULL;
  63 static int do_output_all_clients;
  64
  65 #define FIO_CLIENT_HASH_BITS    7
  66 #define FIO_CLIENT_HASH_SZ      (1 << FIO_CLIENT_HASH_BITS)
  67 #define FIO_CLIENT_HASH_MASK    (FIO_CLIENT_HASH_SZ - 1)
  68 static struct flist_head client_hash[FIO_CLIENT_HASH_SZ];
  69
  70 static void fio_client_add_hash(struct fio_client *client)
  71 {
  72         int bucket = hash_long(client->fd, FIO_CLIENT_HASH_BITS);
  73
  74         bucket &= FIO_CLIENT_HASH_MASK;
  75         flist_add(&client->hash_list, &client_hash[bucket]);
  76 }
  77
  78 static void fio_client_remove_hash(struct fio_client *client)
  79 {
  80         if (!flist_empty(&client->hash_list))
  81                 flist_del_init(&client->hash_list);
  82 }
  83
  84 static void fio_init fio_client_hash_init(void)
  85 {
  86         int i;
  87
  88         for (i = 0; i < FIO_CLIENT_HASH_SZ; i++)
  89                 INIT_FLIST_HEAD(&client_hash[i]);
  90 }
  91
  92 static void fio_client_json_init(void)
  93 {
  94         if (output_format != FIO_OUTPUT_JSON)
  95                 return;
  96         root = json_create_object();
  97         json_object_add_value_string(root, "fio version", fio_version_string);
  98         clients_array = json_create_array();
  99         json_object_add_value_array(root, "client_stats", clients_array);
 100         du_array = json_create_array();
 101         json_object_add_value_array(root, "disk_util", du_array);
 102 }
 103
 104 static void fio_client_json_fini(void)
 105 {
 106         if (output_format != FIO_OUTPUT_JSON)
 107                 return;
 108         json_print_object(root);
 109         log_info("\n");
 110         json_free_object(root);
 111         root = NULL;
 112         clients_array = NULL;
 113         du_array = NULL;
 114 }
 115
 116 static struct fio_client *find_client_by_fd(int fd)
 117 {
 118         int bucket = hash_long(fd, FIO_CLIENT_HASH_BITS) & FIO_CLIENT_HASH_MASK;
 119         struct fio_client *client;
 120         struct flist_head *entry;
 121
 122         flist_for_each(entry, &client_hash[bucket]) {
 123                 client = flist_entry(entry, struct fio_client, hash_list);
 124
 125                 if (client->fd == fd) {
 126                         client->refs++;
 127                         return client;
 128                 }
 129         }
 130
 131         return NULL;
 132 }
 133
 134 void fio_put_client(struct fio_client *client)
 135 {
 136         if (--client->refs)
 137                 return;
 138
 139         free(client->hostname);
 140         if (client->argv)
 141                 free(client->argv);
 142         if (client->name)
 143                 free(client->name);
 144         while (client->nr_files) {
 145                 struct client_file *cf = &client->files[--client->nr_files];
 146
 147                 free(cf->file);
 148         }
 149         if (client->files)
 150                 free(client->files);
 151
 152         if (!client->did_stat)
 153                 sum_stat_clients -= client->nr_stat;
 154
 155         free(client);
 156 }
 157
 158 static void remove_client(struct fio_client *client)
 159 {
 160         assert(client->refs);
 161
 162         dprint(FD_NET, "client: removed <%s>\n", client->hostname);
 163
 164         if (!flist_empty(&client->list))
 165                 flist_del_init(&client->list);
 166
 167         fio_client_remove_hash(client);
 168
 169         if (!flist_empty(&client->eta_list)) {
 170                 flist_del_init(&client->eta_list);
 171                 fio_client_dec_jobs_eta(client->eta_in_flight, client->ops->eta);
 172         }
 173
 174         close(client->fd);
 175         client->fd = -1;
 176
 177         if (client->ops->removed)
 178                 client->ops->removed(client);
 179
 180         nr_clients--;
 181         fio_put_client(client);
 182 }
 183
 184 struct fio_client *fio_get_client(struct fio_client *client)
 185 {
 186         client->refs++;
 187         return client;
 188 }
 189
 190 static void __fio_client_add_cmd_option(struct fio_client *client,
 191                                         const char *opt)
 192 {
 193         int index;
 194
 195         index = client->argc++;
 196         client->argv = realloc(client->argv, sizeof(char *) * client->argc);
 197         client->argv[index] = strdup(opt);
 198         dprint(FD_NET, "client: add cmd %d: %s\n", index, opt);
 199 }
 200
 201 void fio_client_add_cmd_option(void *cookie, const char *opt)
 202 {
 203         struct fio_client *client = cookie;
 204         struct flist_head *entry;
 205
 206         if (!client || !opt)
 207                 return;
 208
 209         __fio_client_add_cmd_option(client, opt);
 210
 211         /*
 212          * Duplicate arguments to shared client group
 213          */
 214         flist_for_each(entry, &arg_list) {
 215                 client = flist_entry(entry, struct fio_client, arg_list);
 216
 217                 __fio_client_add_cmd_option(client, opt);
 218         }
 219 }
 220
 221 struct fio_client *fio_client_add_explicit(struct client_ops *ops,
 222                                            const char *hostname, int type,
 223                                            int port)
 224 {
 225         struct fio_client *client;
 226
 227         client = malloc(sizeof(*client));
 228         memset(client, 0, sizeof(*client));
 229
 230         INIT_FLIST_HEAD(&client->list);
 231         INIT_FLIST_HEAD(&client->hash_list);
 232         INIT_FLIST_HEAD(&client->arg_list);
 233         INIT_FLIST_HEAD(&client->eta_list);
 234         INIT_FLIST_HEAD(&client->cmd_list);
 235
 236         client->hostname = strdup(hostname);
 237
 238         if (type == Fio_client_socket)
 239                 client->is_sock = 1;
 240         else {
 241                 int ipv6;
 242
 243                 ipv6 = type == Fio_client_ipv6;
 244                 if (fio_server_parse_host(hostname, ipv6,
 245                                                 &client->addr.sin_addr,
 246                                                 &client->addr6.sin6_addr))
 247                         goto err;
 248
 249                 client->port = port;
 250         }
 251
 252         client->fd = -1;
 253         client->ops = ops;
 254         client->refs = 1;
 255         client->type = ops->client_type;
 256
 257         __fio_client_add_cmd_option(client, "fio");
 258
 259         flist_add(&client->list, &client_list);
 260         nr_clients++;
 261         dprint(FD_NET, "client: added <%s>\n", client->hostname);
 262         return client;
 263 err:
 264         free(client);
 265         return NULL;
 266 }
 267
 268 int fio_client_add_ini_file(void *cookie, const char *ini_file, int remote)
 269 {
 270         struct fio_client *client = cookie;
 271         struct client_file *cf;
 272         size_t new_size;
 273         void *new_files;
 274
 275         dprint(FD_NET, "client <%s>: add ini %s\n", client->hostname, ini_file);
 276
 277         new_size = (client->nr_files + 1) * sizeof(struct client_file);
 278         new_files = realloc(client->files, new_size);
 279         if (!new_files)
 280                 return 1;
 281
 282         client->files = new_files;
 283         cf = &client->files[client->nr_files];
 284         cf->file = strdup(ini_file);
 285         cf->remote = remote;
 286         client->nr_files++;
 287         return 0;
 288 }
 289
 290 int fio_client_add(struct client_ops *ops, const char *hostname, void **cookie)
 291 {
 292         struct fio_client *existing = *cookie;
 293         struct fio_client *client;
 294
 295         if (existing) {
 296                 /*
 297                  * We always add our "exec" name as the option, hence 1
 298                  * means empty.
 299                  */
 300                 if (existing->argc == 1)
 301                         flist_add_tail(&existing->arg_list, &arg_list);
 302                 else {
 303                         while (!flist_empty(&arg_list))
 304                                 flist_del_init(arg_list.next);
 305                 }
 306         }
 307
 308         client = malloc(sizeof(*client));
 309         memset(client, 0, sizeof(*client));
 310
 311         INIT_FLIST_HEAD(&client->list);
 312         INIT_FLIST_HEAD(&client->hash_list);
 313         INIT_FLIST_HEAD(&client->arg_list);
 314         INIT_FLIST_HEAD(&client->eta_list);
 315         INIT_FLIST_HEAD(&client->cmd_list);
 316
 317         if (fio_server_parse_string(hostname, &client->hostname,
 318                                         &client->is_sock, &client->port,
 319                                         &client->addr.sin_addr,
 320                                         &client->addr6.sin6_addr,
 321                                         &client->ipv6))
 322                 return -1;
 323
 324         client->fd = -1;
 325         client->ops = ops;
 326         client->refs = 1;
 327         client->type = ops->client_type;
 328
 329         __fio_client_add_cmd_option(client, "fio");
 330
 331         flist_add(&client->list, &client_list);
 332         nr_clients++;
 333         dprint(FD_NET, "client: added <%s>\n", client->hostname);
 334         *cookie = client;
 335         return 0;
 336 }
 337
 338 static void probe_client(struct fio_client *client)
 339 {
 340         struct cmd_client_probe_pdu pdu;
 341         uint64_t tag;
 342
 343         dprint(FD_NET, "client: send probe\n");
 344
 345 #ifdef CONFIG_ZLIB
 346         pdu.flags = __le64_to_cpu(FIO_PROBE_FLAG_ZLIB);
 347 #else
 348         pdu.flags = 0;
 349 #endif
 350
 351         fio_net_send_cmd(client->fd, FIO_NET_CMD_PROBE, &pdu, sizeof(pdu), &tag, &client->cmd_list);
 352 }
 353
 354 static int fio_client_connect_ip(struct fio_client *client)
 355 {
 356         struct sockaddr *addr;
 357         socklen_t socklen;
 358         int fd, domain;
 359
 360         if (client->ipv6) {
 361                 client->addr6.sin6_family = AF_INET6;
 362                 client->addr6.sin6_port = htons(client->port);
 363                 domain = AF_INET6;
 364                 addr = (struct sockaddr *) &client->addr6;
 365                 socklen = sizeof(client->addr6);
 366         } else {
 367                 client->addr.sin_family = AF_INET;
 368                 client->addr.sin_port = htons(client->port);
 369                 domain = AF_INET;
 370                 addr = (struct sockaddr *) &client->addr;
 371                 socklen = sizeof(client->addr);
 372         }
 373
 374         fd = socket(domain, SOCK_STREAM, 0);
 375         if (fd < 0) {
 376                 int ret = -errno;
 377
 378                 log_err("fio: socket: %s\n", strerror(errno));
 379                 return ret;
 380         }
 381
 382         if (connect(fd, addr, socklen) < 0) {
 383                 int ret = -errno;
 384
 385                 log_err("fio: connect: %s\n", strerror(errno));
 386                 log_err("fio: failed to connect to %s:%u\n", client->hostname,
 387                                                                 client->port);
 388                 close(fd);
 389                 return ret;
 390         }
 391
 392         return fd;
 393 }
 394
 395 static int fio_client_connect_sock(struct fio_client *client)
 396 {
 397         struct sockaddr_un *addr = &client->addr_un;
 398         socklen_t len;
 399         int fd;
 400
 401         memset(addr, 0, sizeof(*addr));
 402         addr->sun_family = AF_UNIX;
 403         strncpy(addr->sun_path, client->hostname, sizeof(addr->sun_path) - 1);
 404
 405         fd = socket(AF_UNIX, SOCK_STREAM, 0);
 406         if (fd < 0) {
 407                 int ret = -errno;
 408
 409                 log_err("fio: socket: %s\n", strerror(errno));
 410                 return ret;
 411         }
 412
 413         len = sizeof(addr->sun_family) + strlen(addr->sun_path) + 1;
 414         if (connect(fd, (struct sockaddr *) addr, len) < 0) {
 415                 int ret = -errno;
 416
 417                 log_err("fio: connect; %s\n", strerror(errno));
 418                 close(fd);
 419                 return ret;
 420         }
 421
 422         return fd;
 423 }
 424
 425 int fio_client_connect(struct fio_client *client)
 426 {
 427         int fd;
 428
 429         dprint(FD_NET, "client: connect to host %s\n", client->hostname);
 430
 431         if (client->is_sock)
 432                 fd = fio_client_connect_sock(client);
 433         else
 434                 fd = fio_client_connect_ip(client);
 435
 436         dprint(FD_NET, "client: %s connected %d\n", client->hostname, fd);
 437
 438         if (fd < 0)
 439                 return fd;
 440
 441         client->fd = fd;
 442         fio_client_add_hash(client);
 443         client->state = Client_connected;
 444
 445         probe_client(client);
 446         return 0;
 447 }
 448
 449 int fio_client_terminate(struct fio_client *client)
 450 {
 451         return fio_net_send_quit(client->fd);
 452 }
 453
 454 void fio_clients_terminate(void)
 455 {
 456         struct flist_head *entry;
 457         struct fio_client *client;
 458
 459         dprint(FD_NET, "client: terminate clients\n");
 460
 461         flist_for_each(entry, &client_list) {
 462                 client = flist_entry(entry, struct fio_client, list);
 463                 fio_client_terminate(client);
 464         }
 465 }
 466
 467 static void sig_int(int sig)
 468 {
 469         dprint(FD_NET, "client: got signal %d\n", sig);
 470         fio_clients_terminate();
 471 }
 472
 473 static void sig_show_status(int sig)
 474 {
 475         show_running_run_stats();
 476 }
 477
 478 static void client_signal_handler(void)
 479 {
 480         struct sigaction act;
 481
 482         memset(&act, 0, sizeof(act));
 483         act.sa_handler = sig_int;
 484         act.sa_flags = SA_RESTART;
 485         sigaction(SIGINT, &act, NULL);
 486
 487         memset(&act, 0, sizeof(act));
 488         act.sa_handler = sig_int;
 489         act.sa_flags = SA_RESTART;
 490         sigaction(SIGTERM, &act, NULL);
 491
 492 /* Windows uses SIGBREAK as a quit signal from other applications */
 493 #ifdef WIN32
 494         memset(&act, 0, sizeof(act));
 495         act.sa_handler = sig_int;
 496         act.sa_flags = SA_RESTART;
 497         sigaction(SIGBREAK, &act, NULL);
 498 #endif
 499
 500         memset(&act, 0, sizeof(act));
 501         act.sa_handler = sig_show_status;
 502         act.sa_flags = SA_RESTART;
 503         sigaction(SIGUSR1, &act, NULL);
 504 }
 505
 506 static int send_client_cmd_line(struct fio_client *client)
 507 {
 508         struct cmd_single_line_pdu *cslp;
 509         struct cmd_line_pdu *clp;
 510         unsigned long offset;
 511         unsigned int *lens;
 512         void *pdu;
 513         size_t mem;
 514         int i, ret;
 515
 516         dprint(FD_NET, "client: send cmdline %d\n", client->argc);
 517
 518         lens = malloc(client->argc * sizeof(unsigned int));
 519
 520         /*
 521          * Find out how much mem we need
 522          */
 523         for (i = 0, mem = 0; i < client->argc; i++) {
 524                 lens[i] = strlen(client->argv[i]) + 1;
 525                 mem += lens[i];
 526         }
 527
 528         /*
 529          * We need one cmd_line_pdu, and argc number of cmd_single_line_pdu
 530          */
 531         mem += sizeof(*clp) + (client->argc * sizeof(*cslp));
 532
 533         pdu = malloc(mem);
 534         clp = pdu;
 535         offset = sizeof(*clp);
 536
 537         for (i = 0; i < client->argc; i++) {
 538                 uint16_t arg_len = lens[i];
 539
 540                 cslp = pdu + offset;
 541                 strcpy((char *) cslp->text, client->argv[i]);
 542                 cslp->len = cpu_to_le16(arg_len);
 543                 offset += sizeof(*cslp) + arg_len;
 544         }
 545
 546         free(lens);
 547         clp->lines = cpu_to_le16(client->argc);
 548         clp->client_type = __cpu_to_le16(client->type);
 549         ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOBLINE, pdu, mem, NULL, NULL);
 550         free(pdu);
 551         return ret;
 552 }
 553
 554 int fio_clients_connect(void)
 555 {
 556         struct fio_client *client;
 557         struct flist_head *entry, *tmp;
 558         int ret;
 559
 560 #ifdef WIN32
 561         WSADATA wsd;
 562         WSAStartup(MAKEWORD(2, 2), &wsd);
 563 #endif
 564
 565         dprint(FD_NET, "client: connect all\n");
 566
 567         client_signal_handler();
 568
 569         flist_for_each_safe(entry, tmp, &client_list) {
 570                 client = flist_entry(entry, struct fio_client, list);
 571
 572                 ret = fio_client_connect(client);
 573                 if (ret) {
 574                         remove_client(client);
 575                         continue;
 576                 }
 577
 578                 if (client->argc > 1)
 579                         send_client_cmd_line(client);
 580         }
 581
 582         return !nr_clients;
 583 }
 584
 585 int fio_start_client(struct fio_client *client)
 586 {
 587         dprint(FD_NET, "client: start %s\n", client->hostname);
 588         return fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_RUN, 0, NULL);
 589 }
 590
 591 int fio_start_all_clients(void)
 592 {
 593         struct fio_client *client;
 594         struct flist_head *entry, *tmp;
 595         int ret;
 596
 597         dprint(FD_NET, "client: start all\n");
 598
 599         fio_client_json_init();
 600
 601         flist_for_each_safe(entry, tmp, &client_list) {
 602                 client = flist_entry(entry, struct fio_client, list);
 603
 604                 ret = fio_start_client(client);
 605                 if (ret) {
 606                         remove_client(client);
 607                         continue;
 608                 }
 609         }
 610
 611         return flist_empty(&client_list);
 612 }
 613
 614 static int __fio_client_send_remote_ini(struct fio_client *client,
 615                                         const char *filename)
 616 {
 617         struct cmd_load_file_pdu *pdu;
 618         size_t p_size;
 619         int ret;
 620
 621         dprint(FD_NET, "send remote ini %s to %s\n", filename, client->hostname);
 622
 623         p_size = sizeof(*pdu) + strlen(filename) + 1;
 624         pdu = malloc(p_size);
 625         memset(pdu, 0, p_size);
 626         pdu->name_len = strlen(filename);
 627         strcpy((char *) pdu->file, filename);
 628         pdu->client_type = cpu_to_le16((uint16_t) client->type);
 629
 630         client->sent_job = 1;
 631         ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_LOAD_FILE, pdu, p_size,NULL, NULL);
 632         free(pdu);
 633         return ret;
 634 }
 635
 636 /*
 637  * Send file contents to server backend. We could use sendfile(), but to remain
 638  * more portable lets just read/write the darn thing.
 639  */
 640 static int __fio_client_send_local_ini(struct fio_client *client,
 641                                        const char *filename)
 642 {
 643         struct cmd_job_pdu *pdu;
 644         size_t p_size;
 645         struct stat sb;
 646         char *p;
 647         void *buf;
 648         off_t len;
 649         int fd, ret;
 650
 651         dprint(FD_NET, "send ini %s to %s\n", filename, client->hostname);
 652
 653         fd = open(filename, O_RDONLY);
 654         if (fd < 0) {
 655                 int ret = -errno;
 656
 657                 log_err("fio: job file <%s> open: %s\n", filename, strerror(errno));
 658                 return ret;
 659         }
 660
 661         if (fstat(fd, &sb) < 0) {
 662                 int ret = -errno;
 663
 664                 log_err("fio: job file stat: %s\n", strerror(errno));
 665                 close(fd);
 666                 return ret;
 667         }
 668
 669         p_size = sb.st_size + sizeof(*pdu);
 670         pdu = malloc(p_size);
 671         buf = pdu->buf;
 672
 673         len = sb.st_size;
 674         p = buf;
 675         do {
 676                 ret = read(fd, p, len);
 677                 if (ret > 0) {
 678                         len -= ret;
 679                         if (!len)
 680                                 break;
 681                         p += ret;
 682                         continue;
 683                 } else if (!ret)
 684                         break;
 685                 else if (errno == EAGAIN || errno == EINTR)
 686                         continue;
 687         } while (1);
 688
 689         if (len) {
 690                 log_err("fio: failed reading job file %s\n", filename);
 691                 close(fd);
 692                 free(pdu);
 693                 return 1;
 694         }
 695
 696         pdu->buf_len = __cpu_to_le32(sb.st_size);
 697         pdu->client_type = cpu_to_le32(client->type);
 698
 699         client->sent_job = 1;
 700         ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOB, pdu, p_size, NULL, NULL);
 701         free(pdu);
 702         close(fd);
 703         return ret;
 704 }
 705
 706 int fio_client_send_ini(struct fio_client *client, const char *filename,
 707                         int remote)
 708 {
 709         int ret;
 710
 711         if (!remote)
 712                 ret = __fio_client_send_local_ini(client, filename);
 713         else
 714                 ret = __fio_client_send_remote_ini(client, filename);
 715
 716         if (!ret)
 717                 client->sent_job = 1;
 718
 719         return ret;
 720 }
 721
 722 static int fio_client_send_cf(struct fio_client *client,
 723                               struct client_file *cf)
 724 {
 725         return fio_client_send_ini(client, cf->file, cf->remote);
 726 }
 727
 728 int fio_clients_send_ini(const char *filename)
 729 {
 730         struct fio_client *client;
 731         struct flist_head *entry, *tmp;
 732
 733         flist_for_each_safe(entry, tmp, &client_list) {
 734                 client = flist_entry(entry, struct fio_client, list);
 735
 736                 if (client->nr_files) {
 737                         int i;
 738
 739                         for (i = 0; i < client->nr_files; i++) {
 740                                 struct client_file *cf;
 741
 742                                 cf = &client->files[i];
 743
 744                                 if (fio_client_send_cf(client, cf)) {
 745                                         remove_client(client);
 746                                         break;
 747                                 }
 748                         }
 749                 }
 750                 if (client->sent_job)
 751                         continue;
 752                 if (!filename || fio_client_send_ini(client, filename, 0))
 753                         remove_client(client);
 754         }
 755
 756         return !nr_clients;
 757 }
 758
 759 int fio_client_update_options(struct fio_client *client,
 760                               struct thread_options *o, uint64_t *tag)
 761 {
 762         struct cmd_add_job_pdu pdu;
 763
 764         pdu.thread_number = cpu_to_le32(client->thread_number);
 765         pdu.groupid = cpu_to_le32(client->groupid);
 766         convert_thread_options_to_net(&pdu.top, o);
 767
 768         return fio_net_send_cmd(client->fd, FIO_NET_CMD_UPDATE_JOB, &pdu, sizeof(pdu), tag, &client->cmd_list);
 769 }
 770
 771 static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
 772 {
 773         dst->max_val    = le64_to_cpu(src->max_val);
 774         dst->min_val    = le64_to_cpu(src->min_val);
 775         dst->samples    = le64_to_cpu(src->samples);
 776
 777         /*
 778          * Floats arrive as IEEE 754 encoded uint64_t, convert back to double
 779          */
 780         dst->mean.u.f   = fio_uint64_to_double(le64_to_cpu(dst->mean.u.i));
 781         dst->S.u.f      = fio_uint64_to_double(le64_to_cpu(dst->S.u.i));
 782 }
 783
 784 static void convert_ts(struct thread_stat *dst, struct thread_stat *src)
 785 {
 786         int i, j;
 787
 788         dst->error              = le32_to_cpu(src->error);
 789         dst->thread_number      = le32_to_cpu(src->thread_number);
 790         dst->groupid            = le32_to_cpu(src->groupid);
 791         dst->pid                = le32_to_cpu(src->pid);
 792         dst->members            = le32_to_cpu(src->members);
 793         dst->unified_rw_rep     = le32_to_cpu(src->unified_rw_rep);
 794
 795         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
 796                 convert_io_stat(&dst->clat_stat[i], &src->clat_stat[i]);
 797                 convert_io_stat(&dst->slat_stat[i], &src->slat_stat[i]);
 798                 convert_io_stat(&dst->lat_stat[i], &src->lat_stat[i]);
 799                 convert_io_stat(&dst->bw_stat[i], &src->bw_stat[i]);
 800         }
 801
 802         dst->usr_time           = le64_to_cpu(src->usr_time);
 803         dst->sys_time           = le64_to_cpu(src->sys_time);
 804         dst->ctx                = le64_to_cpu(src->ctx);
 805         dst->minf               = le64_to_cpu(src->minf);
 806         dst->majf               = le64_to_cpu(src->majf);
 807         dst->clat_percentiles   = le64_to_cpu(src->clat_percentiles);
 808
 809         for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
 810                 fio_fp64_t *fps = &src->percentile_list[i];
 811                 fio_fp64_t *fpd = &dst->percentile_list[i];
 812
 813                 fpd->u.f = fio_uint64_to_double(le64_to_cpu(fps->u.i));
 814         }
 815
 816         for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
 817                 dst->io_u_map[i]        = le32_to_cpu(src->io_u_map[i]);
 818                 dst->io_u_submit[i]     = le32_to_cpu(src->io_u_submit[i]);
 819                 dst->io_u_complete[i]   = le32_to_cpu(src->io_u_complete[i]);
 820         }
 821
 822         for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
 823                 dst->io_u_lat_u[i]      = le32_to_cpu(src->io_u_lat_u[i]);
 824                 dst->io_u_lat_m[i]      = le32_to_cpu(src->io_u_lat_m[i]);
 825         }
 826
 827         for (i = 0; i < DDIR_RWDIR_CNT; i++)
 828                 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
 829                         dst->io_u_plat[i][j] = le32_to_cpu(src->io_u_plat[i][j]);
 830
 831         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
 832                 dst->total_io_u[i]      = le64_to_cpu(src->total_io_u[i]);
 833                 dst->short_io_u[i]      = le64_to_cpu(src->short_io_u[i]);
 834         }
 835
 836         dst->total_submit       = le64_to_cpu(src->total_submit);
 837         dst->total_complete     = le64_to_cpu(src->total_complete);
 838
 839         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
 840                 dst->io_bytes[i]        = le64_to_cpu(src->io_bytes[i]);
 841                 dst->runtime[i]         = le64_to_cpu(src->runtime[i]);
 842         }
 843
 844         dst->total_run_time     = le64_to_cpu(src->total_run_time);
 845         dst->continue_on_error  = le16_to_cpu(src->continue_on_error);
 846         dst->total_err_count    = le64_to_cpu(src->total_err_count);
 847         dst->first_error        = le32_to_cpu(src->first_error);
 848         dst->kb_base            = le32_to_cpu(src->kb_base);
 849         dst->unit_base          = le32_to_cpu(src->unit_base);
 850
 851         dst->latency_depth      = le32_to_cpu(src->latency_depth);
 852         dst->latency_target     = le64_to_cpu(src->latency_target);
 853         dst->latency_window     = le64_to_cpu(src->latency_window);
 854         dst->latency_percentile.u.f = fio_uint64_to_double(le64_to_cpu(src->latency_percentile.u.i));
 855 }
 856
 857 static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
 858 {
 859         int i;
 860
 861         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
 862                 dst->max_run[i]         = le64_to_cpu(src->max_run[i]);
 863                 dst->min_run[i]         = le64_to_cpu(src->min_run[i]);
 864                 dst->max_bw[i]          = le64_to_cpu(src->max_bw[i]);
 865                 dst->min_bw[i]          = le64_to_cpu(src->min_bw[i]);
 866                 dst->io_kb[i]           = le64_to_cpu(src->io_kb[i]);
 867                 dst->agg[i]             = le64_to_cpu(src->agg[i]);
 868         }
 869
 870         dst->kb_base    = le32_to_cpu(src->kb_base);
 871         dst->unit_base  = le32_to_cpu(src->unit_base);
 872         dst->groupid    = le32_to_cpu(src->groupid);
 873         dst->unified_rw_rep     = le32_to_cpu(src->unified_rw_rep);
 874 }
 875
 876 static void json_object_add_client_info(struct json_object *obj,
 877                                         struct fio_client *client)
 878 {
 879         const char *hostname = client->hostname ? client->hostname : "";
 880
 881         json_object_add_value_string(obj, "hostname", hostname);
 882         json_object_add_value_int(obj, "port", client->port);
 883 }
 884
 885 static void handle_ts(struct fio_client *client, struct fio_net_cmd *cmd)
 886 {
 887         struct cmd_ts_pdu *p = (struct cmd_ts_pdu *) cmd->payload;
 888         struct json_object *tsobj;
 889
 890         tsobj = show_thread_status(&p->ts, &p->rs);
 891         client->did_stat = 1;
 892         if (tsobj) {
 893                 json_object_add_client_info(tsobj, client);
 894                 json_array_add_value_object(clients_array, tsobj);
 895         }
 896
 897         if (!do_output_all_clients)
 898                 return;
 899
 900         sum_thread_stats(&client_ts, &p->ts, sum_stat_nr);
 901         sum_group_stats(&client_gs, &p->rs);
 902
 903         client_ts.members++;
 904         client_ts.thread_number = p->ts.thread_number;
 905         client_ts.groupid = p->ts.groupid;
 906         client_ts.unified_rw_rep = p->ts.unified_rw_rep;
 907
 908         if (++sum_stat_nr == sum_stat_clients) {
 909                 strcpy(client_ts.name, "All clients");
 910                 tsobj = show_thread_status(&client_ts, &client_gs);
 911                 if (tsobj) {
 912                         json_object_add_client_info(tsobj, client);
 913                         json_array_add_value_object(clients_array, tsobj);
 914                 }
 915         }
 916 }
 917
 918 static void handle_gs(struct fio_client *client, struct fio_net_cmd *cmd)
 919 {
 920         struct group_run_stats *gs = (struct group_run_stats *) cmd->payload;
 921
 922         show_group_stats(gs);
 923 }
 924
 925 static void handle_text(struct fio_client *client, struct fio_net_cmd *cmd)
 926 {
 927         struct cmd_text_pdu *pdu = (struct cmd_text_pdu *) cmd->payload;
 928         const char *buf = (const char *) pdu->buf;
 929         const char *name;
 930         int fio_unused ret;
 931
 932         name = client->name ? client->name : client->hostname;
 933
 934         if (!client->skip_newline)
 935                 fprintf(f_out, "<%s> ", name);
 936         ret = fwrite(buf, pdu->buf_len, 1, f_out);
 937         fflush(f_out);
 938         client->skip_newline = strchr(buf, '\n') == NULL;
 939 }
 940
 941 static void convert_agg(struct disk_util_agg *agg)
 942 {
 943         int i;
 944
 945         for (i = 0; i < 2; i++) {
 946                 agg->ios[i]     = le32_to_cpu(agg->ios[i]);
 947                 agg->merges[i]  = le32_to_cpu(agg->merges[i]);
 948                 agg->sectors[i] = le64_to_cpu(agg->sectors[i]);
 949                 agg->ticks[i]   = le32_to_cpu(agg->ticks[i]);
 950         }
 951
 952         agg->io_ticks           = le32_to_cpu(agg->io_ticks);
 953         agg->time_in_queue      = le32_to_cpu(agg->time_in_queue);
 954         agg->slavecount         = le32_to_cpu(agg->slavecount);
 955         agg->max_util.u.f       = fio_uint64_to_double(__le64_to_cpu(agg->max_util.u.i));
 956 }
 957
 958 static void convert_dus(struct disk_util_stat *dus)
 959 {
 960         int i;
 961
 962         for (i = 0; i < 2; i++) {
 963                 dus->s.ios[i]           = le32_to_cpu(dus->s.ios[i]);
 964                 dus->s.merges[i]        = le32_to_cpu(dus->s.merges[i]);
 965                 dus->s.sectors[i]       = le64_to_cpu(dus->s.sectors[i]);
 966                 dus->s.ticks[i]         = le32_to_cpu(dus->s.ticks[i]);
 967         }
 968
 969         dus->s.io_ticks         = le32_to_cpu(dus->s.io_ticks);
 970         dus->s.time_in_queue    = le32_to_cpu(dus->s.time_in_queue);
 971         dus->s.msec             = le64_to_cpu(dus->s.msec);
 972 }
 973
 974 static void handle_du(struct fio_client *client, struct fio_net_cmd *cmd)
 975 {
 976         struct cmd_du_pdu *du = (struct cmd_du_pdu *) cmd->payload;
 977
 978         if (!client->disk_stats_shown) {
 979                 client->disk_stats_shown = 1;
 980                 log_info("\nDisk stats (read/write):\n");
 981         }
 982
 983         if (output_format == FIO_OUTPUT_JSON) {
 984                 struct json_object *duobj;
 985                 json_array_add_disk_util(&du->dus, &du->agg, du_array);
 986                 duobj = json_array_last_value_object(du_array);
 987                 json_object_add_client_info(duobj, client);
 988         } else
 989                 print_disk_util(&du->dus, &du->agg, output_format == FIO_OUTPUT_TERSE);
 990 }
 991
 992 static void convert_jobs_eta(struct jobs_eta *je)
 993 {
 994         int i;
 995
 996         je->nr_running          = le32_to_cpu(je->nr_running);
 997         je->nr_ramp             = le32_to_cpu(je->nr_ramp);
 998         je->nr_pending          = le32_to_cpu(je->nr_pending);
 999         je->nr_setting_up       = le32_to_cpu(je->nr_setting_up);
1000         je->files_open          = le32_to_cpu(je->files_open);
1001
1002         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1003                 je->m_rate[i]   = le32_to_cpu(je->m_rate[i]);
1004                 je->t_rate[i]   = le32_to_cpu(je->t_rate[i]);
1005                 je->m_iops[i]   = le32_to_cpu(je->m_iops[i]);
1006                 je->t_iops[i]   = le32_to_cpu(je->t_iops[i]);
1007                 je->rate[i]     = le32_to_cpu(je->rate[i]);
1008                 je->iops[i]     = le32_to_cpu(je->iops[i]);
1009         }
1010
1011         je->elapsed_sec         = le64_to_cpu(je->elapsed_sec);
1012         je->eta_sec             = le64_to_cpu(je->eta_sec);
1013         je->nr_threads          = le32_to_cpu(je->nr_threads);
1014         je->is_pow2             = le32_to_cpu(je->is_pow2);
1015         je->unit_base           = le32_to_cpu(je->unit_base);
1016 }
1017
1018 void fio_client_sum_jobs_eta(struct jobs_eta *dst, struct jobs_eta *je)
1019 {
1020         int i;
1021
1022         dst->nr_running         += je->nr_running;
1023         dst->nr_ramp            += je->nr_ramp;
1024         dst->nr_pending         += je->nr_pending;
1025         dst->nr_setting_up      += je->nr_setting_up;
1026         dst->files_open         += je->files_open;
1027
1028         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1029                 dst->m_rate[i]  += je->m_rate[i];
1030                 dst->t_rate[i]  += je->t_rate[i];
1031                 dst->m_iops[i]  += je->m_iops[i];
1032                 dst->t_iops[i]  += je->t_iops[i];
1033                 dst->rate[i]    += je->rate[i];
1034                 dst->iops[i]    += je->iops[i];
1035         }
1036
1037         dst->elapsed_sec        += je->elapsed_sec;
1038
1039         if (je->eta_sec > dst->eta_sec)
1040                 dst->eta_sec = je->eta_sec;
1041
1042         dst->nr_threads         += je->nr_threads;
1043
1044         /*
1045          * This wont be correct for multiple strings, but at least it
1046          * works for the basic cases.
1047          */
1048         strcpy((char *) dst->run_str, (char *) je->run_str);
1049 }
1050
1051 void fio_client_dec_jobs_eta(struct client_eta *eta, client_eta_op eta_fn)
1052 {
1053         if (!--eta->pending) {
1054                 eta_fn(&eta->eta);
1055                 free(eta);
1056         }
1057 }
1058
1059 static void remove_reply_cmd(struct fio_client *client, struct fio_net_cmd *cmd)
1060 {
1061         struct fio_net_cmd_reply *reply = NULL;
1062         struct flist_head *entry;
1063
1064         flist_for_each(entry, &client->cmd_list) {
1065                 reply = flist_entry(entry, struct fio_net_cmd_reply, list);
1066
1067                 if (cmd->tag == (uintptr_t) reply)
1068                         break;
1069
1070                 reply = NULL;
1071         }
1072
1073         if (!reply) {
1074                 log_err("fio: client: unable to find matching tag (%llx)\n", (unsigned long long) cmd->tag);
1075                 return;
1076         }
1077
1078         flist_del(&reply->list);
1079         cmd->tag = reply->saved_tag;
1080         free(reply);
1081 }
1082
1083 int fio_client_wait_for_reply(struct fio_client *client, uint64_t tag)
1084 {
1085         do {
1086                 struct fio_net_cmd_reply *reply = NULL;
1087                 struct flist_head *entry;
1088
1089                 flist_for_each(entry, &client->cmd_list) {
1090                         reply = flist_entry(entry, struct fio_net_cmd_reply, list);
1091
1092                         if (tag == (uintptr_t) reply)
1093                                 break;
1094
1095                         reply = NULL;
1096                 }
1097
1098                 if (!reply)
1099                         break;
1100
1101                 usleep(1000);
1102         } while (1);
1103
1104         return 0;
1105 }
1106
1107 static void handle_eta(struct fio_client *client, struct fio_net_cmd *cmd)
1108 {
1109         struct jobs_eta *je = (struct jobs_eta *) cmd->payload;
1110         struct client_eta *eta = (struct client_eta *) (uintptr_t) cmd->tag;
1111
1112         dprint(FD_NET, "client: got eta tag %p, %d\n", eta, eta->pending);
1113
1114         assert(client->eta_in_flight == eta);
1115
1116         client->eta_in_flight = NULL;
1117         flist_del_init(&client->eta_list);
1118
1119         if (client->ops->jobs_eta)
1120                 client->ops->jobs_eta(client, je);
1121
1122         fio_client_sum_jobs_eta(&eta->eta, je);
1123         fio_client_dec_jobs_eta(eta, client->ops->eta);
1124 }
1125
1126 static void handle_probe(struct fio_client *client, struct fio_net_cmd *cmd)
1127 {
1128         struct cmd_probe_reply_pdu *probe = (struct cmd_probe_reply_pdu *) cmd->payload;
1129         const char *os, *arch;
1130         char bit[16];
1131
1132         os = fio_get_os_string(probe->os);
1133         if (!os)
1134                 os = "unknown";
1135
1136         arch = fio_get_arch_string(probe->arch);
1137         if (!arch)
1138                 os = "unknown";
1139
1140         sprintf(bit, "%d-bit", probe->bpp * 8);
1141         probe->flags = le64_to_cpu(probe->flags);
1142
1143         log_info("hostname=%s, be=%u, %s, os=%s, arch=%s, fio=%s, flags=%lx\n",
1144                 probe->hostname, probe->bigendian, bit, os, arch,
1145                 probe->fio_version, (unsigned long) probe->flags);
1146
1147         if (!client->name)
1148                 client->name = strdup((char *) probe->hostname);
1149 }
1150
1151 static void handle_start(struct fio_client *client, struct fio_net_cmd *cmd)
1152 {
1153         struct cmd_start_pdu *pdu = (struct cmd_start_pdu *) cmd->payload;
1154
1155         client->state = Client_started;
1156         client->jobs = le32_to_cpu(pdu->jobs);
1157         client->nr_stat = le32_to_cpu(pdu->stat_outputs);
1158
1159         if (sum_stat_clients > 1)
1160                 do_output_all_clients = 1;
1161
1162         sum_stat_clients += client->nr_stat;
1163 }
1164
1165 static void handle_stop(struct fio_client *client, struct fio_net_cmd *cmd)
1166 {
1167         if (client->error)
1168                 log_info("client <%s>: exited with error %d\n", client->hostname, client->error);
1169 }
1170
1171 static void convert_stop(struct fio_net_cmd *cmd)
1172 {
1173         struct cmd_end_pdu *pdu = (struct cmd_end_pdu *) cmd->payload;
1174
1175         pdu->error = le32_to_cpu(pdu->error);
1176 }
1177
1178 static void convert_text(struct fio_net_cmd *cmd)
1179 {
1180         struct cmd_text_pdu *pdu = (struct cmd_text_pdu *) cmd->payload;
1181
1182         pdu->level      = le32_to_cpu(pdu->level);
1183         pdu->buf_len    = le32_to_cpu(pdu->buf_len);
1184         pdu->log_sec    = le64_to_cpu(pdu->log_sec);
1185         pdu->log_usec   = le64_to_cpu(pdu->log_usec);
1186 }
1187
1188 static struct cmd_iolog_pdu *convert_iolog_gz(struct fio_net_cmd *cmd,
1189                                               struct cmd_iolog_pdu *pdu)
1190 {
1191 #ifdef CONFIG_ZLIB
1192         struct cmd_iolog_pdu *ret;
1193         z_stream stream;
1194         uint32_t nr_samples;
1195         size_t total;
1196         void *p;
1197
1198         stream.zalloc = Z_NULL;
1199         stream.zfree = Z_NULL;
1200         stream.opaque = Z_NULL;
1201         stream.avail_in = 0;
1202         stream.next_in = Z_NULL;
1203
1204         if (inflateInit(&stream) != Z_OK)
1205                 return NULL;
1206
1207         /*
1208          * Get header first, it's not compressed
1209          */
1210         nr_samples = le64_to_cpu(pdu->nr_samples);
1211
1212         total = nr_samples * __log_entry_sz(le32_to_cpu(pdu->log_offset));
1213         ret = malloc(total + sizeof(*pdu));
1214         ret->nr_samples = nr_samples;
1215
1216         memcpy(ret, pdu, sizeof(*pdu));
1217
1218         p = (void *) ret + sizeof(*pdu);
1219
1220         stream.avail_in = cmd->pdu_len - sizeof(*pdu);
1221         stream.next_in = (void *) pdu + sizeof(*pdu);
1222         while (stream.avail_in) {
1223                 unsigned int this_chunk = 65536;
1224                 unsigned int this_len;
1225                 int err;
1226
1227                 if (this_chunk > total)
1228                         this_chunk = total;
1229
1230                 stream.avail_out = this_chunk;
1231                 stream.next_out = p;
1232                 err = inflate(&stream, Z_NO_FLUSH);
1233                 /* may be Z_OK, or Z_STREAM_END */
1234                 if (err < 0) {
1235                         log_err("fio: inflate error %d\n", err);
1236                         free(ret);
1237                         ret = NULL;
1238                         goto err;
1239                 }
1240
1241                 this_len = this_chunk - stream.avail_out;
1242                 p += this_len;
1243                 total -= this_len;
1244         }
1245
1246 err:
1247         inflateEnd(&stream);
1248         return ret;
1249 #else
1250         return NULL;
1251 #endif
1252 }
1253
1254 /*
1255  * This has been compressed on the server side, since it can be big.
1256  * Uncompress here.
1257  */
1258 static struct cmd_iolog_pdu *convert_iolog(struct fio_net_cmd *cmd)
1259 {
1260         struct cmd_iolog_pdu *pdu = (struct cmd_iolog_pdu *) cmd->payload;
1261         struct cmd_iolog_pdu *ret;
1262         uint64_t i;
1263         void *samples;
1264
1265         /*
1266          * Convert if compressed and we support it. If it's not
1267          * compressed, we need not do anything.
1268          */
1269         if (le32_to_cpu(pdu->compressed)) {
1270 #ifndef CONFIG_ZLIB
1271                 log_err("fio: server sent compressed data by mistake\n");
1272                 return NULL;
1273 #endif
1274                 ret = convert_iolog_gz(cmd, pdu);
1275                 if (!ret) {
1276                         log_err("fio: failed decompressing log\n");
1277                         return NULL;
1278                 }
1279         } else
1280                 ret = pdu;
1281
1282         ret->nr_samples         = le64_to_cpu(ret->nr_samples);
1283         ret->thread_number      = le32_to_cpu(ret->thread_number);
1284         ret->log_type           = le32_to_cpu(ret->log_type);
1285         ret->compressed         = le32_to_cpu(ret->compressed);
1286         ret->log_offset         = le32_to_cpu(ret->log_offset);
1287
1288         samples = &ret->samples[0];
1289         for (i = 0; i < ret->nr_samples; i++) {
1290                 struct io_sample *s;
1291
1292                 s = __get_sample(samples, ret->log_offset, i);
1293                 s->time         = le64_to_cpu(s->time);
1294                 s->val          = le64_to_cpu(s->val);
1295                 s->__ddir       = le32_to_cpu(s->__ddir);
1296                 s->bs           = le32_to_cpu(s->bs);
1297
1298                 if (ret->log_offset) {
1299                         struct io_sample_offset *so = (void *) s;
1300
1301                         so->offset = le64_to_cpu(so->offset);
1302                 }
1303         }
1304
1305         return ret;
1306 }
1307
1308 int fio_handle_client(struct fio_client *client)
1309 {
1310         struct client_ops *ops = client->ops;
1311         struct fio_net_cmd *cmd;
1312
1313         dprint(FD_NET, "client: handle %s\n", client->hostname);
1314
1315         cmd = fio_net_recv_cmd(client->fd);
1316         if (!cmd)
1317                 return 0;
1318
1319         dprint(FD_NET, "client: got cmd op %s from %s (pdu=%u)\n",
1320                 fio_server_op(cmd->opcode), client->hostname, cmd->pdu_len);
1321
1322         switch (cmd->opcode) {
1323         case FIO_NET_CMD_QUIT:
1324                 if (ops->quit)
1325                         ops->quit(client, cmd);
1326                 remove_client(client);
1327                 free(cmd);
1328                 break;
1329         case FIO_NET_CMD_TEXT:
1330                 convert_text(cmd);
1331                 ops->text(client, cmd);
1332                 free(cmd);
1333                 break;
1334         case FIO_NET_CMD_DU: {
1335                 struct cmd_du_pdu *du = (struct cmd_du_pdu *) cmd->payload;
1336
1337                 convert_dus(&du->dus);
1338                 convert_agg(&du->agg);
1339
1340                 ops->disk_util(client, cmd);
1341                 free(cmd);
1342                 break;
1343                 }
1344         case FIO_NET_CMD_TS: {
1345                 struct cmd_ts_pdu *p = (struct cmd_ts_pdu *) cmd->payload;
1346
1347                 convert_ts(&p->ts, &p->ts);
1348                 convert_gs(&p->rs, &p->rs);
1349
1350                 ops->thread_status(client, cmd);
1351                 free(cmd);
1352                 break;
1353                 }
1354         case FIO_NET_CMD_GS: {
1355                 struct group_run_stats *gs = (struct group_run_stats *) cmd->payload;
1356
1357                 convert_gs(gs, gs);
1358
1359                 ops->group_stats(client, cmd);
1360                 free(cmd);
1361                 break;
1362                 }
1363         case FIO_NET_CMD_ETA: {
1364                 struct jobs_eta *je = (struct jobs_eta *) cmd->payload;
1365
1366                 remove_reply_cmd(client, cmd);
1367                 convert_jobs_eta(je);
1368                 handle_eta(client, cmd);
1369                 free(cmd);
1370                 break;
1371                 }
1372         case FIO_NET_CMD_PROBE:
1373                 remove_reply_cmd(client, cmd);
1374                 ops->probe(client, cmd);
1375                 free(cmd);
1376                 break;
1377         case FIO_NET_CMD_SERVER_START:
1378                 client->state = Client_running;
1379                 if (ops->job_start)
1380                         ops->job_start(client, cmd);
1381                 free(cmd);
1382                 break;
1383         case FIO_NET_CMD_START: {
1384                 struct cmd_start_pdu *pdu = (struct cmd_start_pdu *) cmd->payload;
1385
1386                 pdu->jobs = le32_to_cpu(pdu->jobs);
1387                 ops->start(client, cmd);
1388                 free(cmd);
1389                 break;
1390                 }
1391         case FIO_NET_CMD_STOP: {
1392                 struct cmd_end_pdu *pdu = (struct cmd_end_pdu *) cmd->payload;
1393
1394                 convert_stop(cmd);
1395                 client->state = Client_stopped;
1396                 client->error = le32_to_cpu(pdu->error);
1397                 client->signal = le32_to_cpu(pdu->signal);
1398                 ops->stop(client, cmd);
1399                 free(cmd);
1400                 break;
1401                 }
1402         case FIO_NET_CMD_ADD_JOB: {
1403                 struct cmd_add_job_pdu *pdu = (struct cmd_add_job_pdu *) cmd->payload;
1404
1405                 client->thread_number = le32_to_cpu(pdu->thread_number);
1406                 client->groupid = le32_to_cpu(pdu->groupid);
1407
1408                 if (ops->add_job)
1409                         ops->add_job(client, cmd);
1410                 free(cmd);
1411                 break;
1412                 }
1413         case FIO_NET_CMD_IOLOG:
1414                 if (ops->iolog) {
1415                         struct cmd_iolog_pdu *pdu;
1416
1417                         pdu = convert_iolog(cmd);
1418                         ops->iolog(client, pdu);
1419                 }
1420                 free(cmd);
1421                 break;
1422         case FIO_NET_CMD_UPDATE_JOB:
1423                 ops->update_job(client, cmd);
1424                 remove_reply_cmd(client, cmd);
1425                 free(cmd);
1426                 break;
1427         default:
1428                 log_err("fio: unknown client op: %s\n", fio_server_op(cmd->opcode));
1429                 free(cmd);
1430                 break;
1431         }
1432
1433         return 1;
1434 }
1435
1436 static void request_client_etas(struct client_ops *ops)
1437 {
1438         struct fio_client *client;
1439         struct flist_head *entry;
1440         struct client_eta *eta;
1441         int skipped = 0;
1442
1443         dprint(FD_NET, "client: request eta (%d)\n", nr_clients);
1444
1445         eta = calloc(1, sizeof(*eta) + __THREAD_RUNSTR_SZ(REAL_MAX_JOBS));
1446         eta->pending = nr_clients;
1447
1448         flist_for_each(entry, &client_list) {
1449                 client = flist_entry(entry, struct fio_client, list);
1450
1451                 if (!flist_empty(&client->eta_list)) {
1452                         skipped++;
1453                         continue;
1454                 }
1455                 if (client->state != Client_running)
1456                         continue;
1457
1458                 assert(!client->eta_in_flight);
1459                 flist_add_tail(&client->eta_list, &eta_list);
1460                 client->eta_in_flight = eta;
1461                 fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_SEND_ETA,
1462                                         (uintptr_t) eta, &client->cmd_list);
1463         }
1464
1465         while (skipped--)
1466                 fio_client_dec_jobs_eta(eta, ops->eta);
1467
1468         dprint(FD_NET, "client: requested eta tag %p\n", eta);
1469 }
1470
1471 static int client_check_cmd_timeout(struct fio_client *client,
1472                                     struct timeval *now)
1473 {
1474         struct fio_net_cmd_reply *reply;
1475         struct flist_head *entry, *tmp;
1476         int ret = 0;
1477
1478         flist_for_each_safe(entry, tmp, &client->cmd_list) {
1479                 reply = flist_entry(entry, struct fio_net_cmd_reply, list);
1480
1481                 if (mtime_since(&reply->tv, now) < FIO_NET_CLIENT_TIMEOUT)
1482                         continue;
1483
1484                 log_err("fio: client %s, timeout on cmd %s\n", client->hostname,
1485                                                 fio_server_op(reply->opcode));
1486                 flist_del(&reply->list);
1487                 free(reply);
1488                 ret = 1;
1489         }
1490
1491         return flist_empty(&client->cmd_list) && ret;
1492 }
1493
1494 static int fio_check_clients_timed_out(void)
1495 {
1496         struct fio_client *client;
1497         struct flist_head *entry, *tmp;
1498         struct timeval tv;
1499         int ret = 0;
1500
1501         fio_gettime(&tv, NULL);
1502
1503         flist_for_each_safe(entry, tmp, &client_list) {
1504                 client = flist_entry(entry, struct fio_client, list);
1505
1506                 if (flist_empty(&client->cmd_list))
1507                         continue;
1508
1509                 if (!client_check_cmd_timeout(client, &tv))
1510                         continue;
1511
1512                 if (client->ops->timed_out)
1513                         client->ops->timed_out(client);
1514                 else
1515                         log_err("fio: client %s timed out\n", client->hostname);
1516
1517                 remove_client(client);
1518                 ret = 1;
1519         }
1520
1521         return ret;
1522 }
1523
1524 int fio_handle_clients(struct client_ops *ops)
1525 {
1526         struct pollfd *pfds;
1527         int i, ret = 0, retval = 0;
1528
1529         fio_gettime(&eta_tv, NULL);
1530
1531         pfds = malloc(nr_clients * sizeof(struct pollfd));
1532
1533         init_thread_stat(&client_ts);
1534         init_group_run_stat(&client_gs);
1535
1536         while (!exit_backend && nr_clients) {
1537                 struct flist_head *entry, *tmp;
1538                 struct fio_client *client;
1539
1540                 i = 0;
1541                 flist_for_each_safe(entry, tmp, &client_list) {
1542                         client = flist_entry(entry, struct fio_client, list);
1543
1544                         if (!client->sent_job && !client->ops->stay_connected &&
1545                             flist_empty(&client->cmd_list)) {
1546                                 remove_client(client);
1547                                 continue;
1548                         }
1549
1550                         pfds[i].fd = client->fd;
1551                         pfds[i].events = POLLIN;
1552                         i++;
1553                 }
1554
1555                 if (!nr_clients)
1556                         break;
1557
1558                 assert(i == nr_clients);
1559
1560                 do {
1561                         struct timeval tv;
1562
1563                         fio_gettime(&tv, NULL);
1564                         if (mtime_since(&eta_tv, &tv) >= 900) {
1565                                 request_client_etas(ops);
1566                                 memcpy(&eta_tv, &tv, sizeof(tv));
1567
1568                                 if (fio_check_clients_timed_out())
1569                                         break;
1570                         }
1571
1572                         ret = poll(pfds, nr_clients, ops->eta_msec);
1573                         if (ret < 0) {
1574                                 if (errno == EINTR)
1575                                         continue;
1576                                 log_err("fio: poll clients: %s\n", strerror(errno));
1577                                 break;
1578                         } else if (!ret)
1579                                 continue;
1580                 } while (ret <= 0);
1581
1582                 for (i = 0; i < nr_clients; i++) {
1583                         if (!(pfds[i].revents & POLLIN))
1584                                 continue;
1585
1586                         client = find_client_by_fd(pfds[i].fd);
1587                         if (!client) {
1588                                 log_err("fio: unknown client fd %ld\n", (long) pfds[i].fd);
1589                                 continue;
1590                         }
1591                         if (!fio_handle_client(client)) {
1592                                 log_info("client: host=%s disconnected\n",
1593                                                 client->hostname);
1594                                 remove_client(client);
1595                                 retval = 1;
1596                         } else if (client->error)
1597                                 retval = 1;
1598                         fio_put_client(client);
1599                 }
1600         }
1601
1602         fio_client_json_fini();
1603
1604         free(pfds);
1605         return retval;
1606 }