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
  18 #include "fio.h"
  19 #include "client.h"
  20 #include "server.h"
  21 #include "flist.h"
  22 #include "hash.h"
  23
  24 static void handle_du(struct fio_client *client, struct fio_net_cmd *cmd);
  25 static void handle_ts(struct fio_client *client, struct fio_net_cmd *cmd);
  26 static void handle_gs(struct fio_client *client, struct fio_net_cmd *cmd);
  27 static void handle_probe(struct fio_client *client, struct fio_net_cmd *cmd);
  28 static void handle_text(struct fio_client *client, struct fio_net_cmd *cmd);
  29 static void handle_stop(struct fio_client *client, struct fio_net_cmd *cmd);
  30 static void handle_start(struct fio_client *client, struct fio_net_cmd *cmd);
  31
  32 struct client_ops fio_client_ops = {
  33         .text_op        = handle_text,
  34         .disk_util      = handle_du,
  35         .thread_status  = handle_ts,
  36         .group_stats    = handle_gs,
  37         .stop           = handle_stop,
  38         .start          = handle_start,
  39         .eta            = display_thread_status,
  40         .probe          = handle_probe,
  41         .eta_msec       = FIO_CLIENT_DEF_ETA_MSEC,
  42 };
  43
  44 static struct timeval eta_tv;
  45
  46 static FLIST_HEAD(client_list);
  47 static FLIST_HEAD(eta_list);
  48
  49 static FLIST_HEAD(arg_list);
  50
  51 struct thread_stat client_ts;
  52 struct group_run_stats client_gs;
  53 int sum_stat_clients;
  54
  55 static int sum_stat_nr;
  56
  57 #define FIO_CLIENT_HASH_BITS    7
  58 #define FIO_CLIENT_HASH_SZ      (1 << FIO_CLIENT_HASH_BITS)
  59 #define FIO_CLIENT_HASH_MASK    (FIO_CLIENT_HASH_SZ - 1)
  60 static struct flist_head client_hash[FIO_CLIENT_HASH_SZ];
  61
  62 static void fio_client_add_hash(struct fio_client *client)
  63 {
  64         int bucket = hash_long(client->fd, FIO_CLIENT_HASH_BITS);
  65
  66         bucket &= FIO_CLIENT_HASH_MASK;
  67         flist_add(&client->hash_list, &client_hash[bucket]);
  68 }
  69
  70 static void fio_client_remove_hash(struct fio_client *client)
  71 {
  72         if (!flist_empty(&client->hash_list))
  73                 flist_del_init(&client->hash_list);
  74 }
  75
  76 static void fio_init fio_client_hash_init(void)
  77 {
  78         int i;
  79
  80         for (i = 0; i < FIO_CLIENT_HASH_SZ; i++)
  81                 INIT_FLIST_HEAD(&client_hash[i]);
  82 }
  83
  84 static struct fio_client *find_client_by_fd(int fd)
  85 {
  86         int bucket = hash_long(fd, FIO_CLIENT_HASH_BITS) & FIO_CLIENT_HASH_MASK;
  87         struct fio_client *client;
  88         struct flist_head *entry;
  89
  90         flist_for_each(entry, &client_hash[bucket]) {
  91                 client = flist_entry(entry, struct fio_client, hash_list);
  92
  93                 if (client->fd == fd) {
  94                         client->refs++;
  95                         return client;
  96                 }
  97         }
  98
  99         return NULL;
 100 }
 101
 102 void fio_put_client(struct fio_client *client)
 103 {
 104         if (--client->refs)
 105                 return;
 106
 107         free(client->hostname);
 108         if (client->argv)
 109                 free(client->argv);
 110         if (client->name)
 111                 free(client->name);
 112
 113         free(client);
 114 }
 115
 116 static void remove_client(struct fio_client *client)
 117 {
 118         assert(client->refs);
 119
 120         dprint(FD_NET, "client: removed <%s>\n", client->hostname);
 121
 122         if (!flist_empty(&client->list))
 123                 flist_del_init(&client->list);
 124
 125         fio_client_remove_hash(client);
 126
 127         if (!flist_empty(&client->eta_list)) {
 128                 flist_del_init(&client->eta_list);
 129                 fio_client_dec_jobs_eta(client->eta_in_flight, client->ops->eta);
 130         }
 131
 132         nr_clients--;
 133         sum_stat_clients--;
 134
 135         fio_put_client(client);
 136 }
 137
 138 struct fio_client *fio_get_client(struct fio_client *client)
 139 {
 140         client->refs++;
 141         return client;
 142 }
 143
 144 static void __fio_client_add_cmd_option(struct fio_client *client,
 145                                         const char *opt)
 146 {
 147         int index;
 148
 149         index = client->argc++;
 150         client->argv = realloc(client->argv, sizeof(char *) * client->argc);
 151         client->argv[index] = strdup(opt);
 152         dprint(FD_NET, "client: add cmd %d: %s\n", index, opt);
 153 }
 154
 155 void fio_client_add_cmd_option(void *cookie, const char *opt)
 156 {
 157         struct fio_client *client = cookie;
 158         struct flist_head *entry;
 159
 160         if (!client || !opt)
 161                 return;
 162
 163         __fio_client_add_cmd_option(client, opt);
 164
 165         /*
 166          * Duplicate arguments to shared client group
 167          */
 168         flist_for_each(entry, &arg_list) {
 169                 client = flist_entry(entry, struct fio_client, arg_list);
 170
 171                 __fio_client_add_cmd_option(client, opt);
 172         }
 173 }
 174
 175 struct fio_client *fio_client_add_explicit(struct client_ops *ops,
 176                                            const char *hostname, int type,
 177                                            int port)
 178 {
 179         struct fio_client *client;
 180
 181         client = malloc(sizeof(*client));
 182         memset(client, 0, sizeof(*client));
 183
 184         INIT_FLIST_HEAD(&client->list);
 185         INIT_FLIST_HEAD(&client->hash_list);
 186         INIT_FLIST_HEAD(&client->arg_list);
 187         INIT_FLIST_HEAD(&client->eta_list);
 188         INIT_FLIST_HEAD(&client->cmd_list);
 189
 190         client->hostname = strdup(hostname);
 191
 192         if (type == Fio_client_socket)
 193                 client->is_sock = 1;
 194         else {
 195                 int ipv6;
 196
 197                 ipv6 = type == Fio_client_ipv6;
 198                 if (fio_server_parse_host(hostname, &ipv6,
 199                                                 &client->addr.sin_addr,
 200                                                 &client->addr6.sin6_addr))
 201                         goto err;
 202
 203                 client->port = port;
 204         }
 205
 206         client->fd = -1;
 207         client->ops = ops;
 208         client->refs = 1;
 209
 210         __fio_client_add_cmd_option(client, "fio");
 211
 212         flist_add(&client->list, &client_list);
 213         nr_clients++;
 214         dprint(FD_NET, "client: added <%s>\n", client->hostname);
 215         return client;
 216 err:
 217         free(client);
 218         return NULL;
 219 }
 220
 221 int fio_client_add(struct client_ops *ops, const char *hostname, void **cookie)
 222 {
 223         struct fio_client *existing = *cookie;
 224         struct fio_client *client;
 225
 226         if (existing) {
 227                 /*
 228                  * We always add our "exec" name as the option, hence 1
 229                  * means empty.
 230                  */
 231                 if (existing->argc == 1)
 232                         flist_add_tail(&existing->arg_list, &arg_list);
 233                 else {
 234                         while (!flist_empty(&arg_list))
 235                                 flist_del_init(arg_list.next);
 236                 }
 237         }
 238
 239         client = malloc(sizeof(*client));
 240         memset(client, 0, sizeof(*client));
 241
 242         INIT_FLIST_HEAD(&client->list);
 243         INIT_FLIST_HEAD(&client->hash_list);
 244         INIT_FLIST_HEAD(&client->arg_list);
 245         INIT_FLIST_HEAD(&client->eta_list);
 246         INIT_FLIST_HEAD(&client->cmd_list);
 247
 248         if (fio_server_parse_string(hostname, &client->hostname,
 249                                         &client->is_sock, &client->port,
 250                                         &client->addr.sin_addr,
 251                                         &client->addr6.sin6_addr,
 252                                         &client->ipv6))
 253                 return -1;
 254
 255         client->fd = -1;
 256         client->ops = ops;
 257         client->refs = 1;
 258
 259         __fio_client_add_cmd_option(client, "fio");
 260
 261         flist_add(&client->list, &client_list);
 262         nr_clients++;
 263         dprint(FD_NET, "client: added <%s>\n", client->hostname);
 264         *cookie = client;
 265         return 0;
 266 }
 267
 268 static void probe_client(struct fio_client *client)
 269 {
 270         dprint(FD_NET, "client: send probe\n");
 271
 272         fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_PROBE, 0, &client->cmd_list);
 273 }
 274
 275 static int fio_client_connect_ip(struct fio_client *client)
 276 {
 277         struct sockaddr *addr;
 278         fio_socklen_t socklen;
 279         int fd, domain;
 280
 281         if (client->ipv6) {
 282                 client->addr6.sin6_family = AF_INET6;
 283                 client->addr6.sin6_port = htons(client->port);
 284                 domain = AF_INET6;
 285                 addr = (struct sockaddr *) &client->addr6;
 286                 socklen = sizeof(client->addr6);
 287         } else {
 288                 client->addr.sin_family = AF_INET;
 289                 client->addr.sin_port = htons(client->port);
 290                 domain = AF_INET;
 291                 addr = (struct sockaddr *) &client->addr;
 292                 socklen = sizeof(client->addr);
 293         }
 294
 295         fd = socket(domain, SOCK_STREAM, 0);
 296         if (fd < 0) {
 297                 int ret = -errno;
 298
 299                 log_err("fio: socket: %s\n", strerror(errno));
 300                 return ret;
 301         }
 302
 303         if (connect(fd, addr, socklen) < 0) {
 304                 int ret = -errno;
 305
 306                 log_err("fio: connect: %s\n", strerror(errno));
 307                 log_err("fio: failed to connect to %s:%u\n", client->hostname,
 308                                                                 client->port);
 309                 close(fd);
 310                 return ret;
 311         }
 312
 313         return fd;
 314 }
 315
 316 static int fio_client_connect_sock(struct fio_client *client)
 317 {
 318         struct sockaddr_un *addr = &client->addr_un;
 319         fio_socklen_t len;
 320         int fd;
 321
 322         memset(addr, 0, sizeof(*addr));
 323         addr->sun_family = AF_UNIX;
 324         strcpy(addr->sun_path, client->hostname);
 325
 326         fd = socket(AF_UNIX, SOCK_STREAM, 0);
 327         if (fd < 0) {
 328                 int ret = -errno;
 329
 330                 log_err("fio: socket: %s\n", strerror(errno));
 331                 return ret;
 332         }
 333
 334         len = sizeof(addr->sun_family) + strlen(addr->sun_path) + 1;
 335         if (connect(fd, (struct sockaddr *) addr, len) < 0) {
 336                 int ret = -errno;
 337
 338                 log_err("fio: connect; %s\n", strerror(errno));
 339                 close(fd);
 340                 return ret;
 341         }
 342
 343         return fd;
 344 }
 345
 346 int fio_client_connect(struct fio_client *client)
 347 {
 348         int fd;
 349
 350         dprint(FD_NET, "client: connect to host %s\n", client->hostname);
 351
 352         if (client->is_sock)
 353                 fd = fio_client_connect_sock(client);
 354         else
 355                 fd = fio_client_connect_ip(client);
 356
 357         dprint(FD_NET, "client: %s connected %d\n", client->hostname, fd);
 358
 359         if (fd < 0)
 360                 return fd;
 361
 362         client->fd = fd;
 363         fio_client_add_hash(client);
 364         client->state = Client_connected;
 365
 366         probe_client(client);
 367         return 0;
 368 }
 369
 370 void fio_client_terminate(struct fio_client *client)
 371 {
 372         fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_QUIT, 0, NULL);
 373 }
 374
 375 void fio_clients_terminate(void)
 376 {
 377         struct flist_head *entry;
 378         struct fio_client *client;
 379
 380         dprint(FD_NET, "client: terminate clients\n");
 381
 382         flist_for_each(entry, &client_list) {
 383                 client = flist_entry(entry, struct fio_client, list);
 384                 fio_client_terminate(client);
 385         }
 386 }
 387
 388 static void sig_int(int sig)
 389 {
 390         dprint(FD_NET, "client: got signal %d\n", sig);
 391         fio_clients_terminate();
 392 }
 393
 394 static void client_signal_handler(void)
 395 {
 396         struct sigaction act;
 397
 398         memset(&act, 0, sizeof(act));
 399         act.sa_handler = sig_int;
 400         act.sa_flags = SA_RESTART;
 401         sigaction(SIGINT, &act, NULL);
 402
 403         memset(&act, 0, sizeof(act));
 404         act.sa_handler = sig_int;
 405         act.sa_flags = SA_RESTART;
 406         sigaction(SIGTERM, &act, NULL);
 407 }
 408
 409 static int send_client_cmd_line(struct fio_client *client)
 410 {
 411         struct cmd_single_line_pdu *cslp;
 412         struct cmd_line_pdu *clp;
 413         unsigned long offset;
 414         unsigned int *lens;
 415         void *pdu;
 416         size_t mem;
 417         int i, ret;
 418
 419         dprint(FD_NET, "client: send cmdline %d\n", client->argc);
 420
 421         lens = malloc(client->argc * sizeof(unsigned int));
 422
 423         /*
 424          * Find out how much mem we need
 425          */
 426         for (i = 0, mem = 0; i < client->argc; i++) {
 427                 lens[i] = strlen(client->argv[i]) + 1;
 428                 mem += lens[i];
 429         }
 430
 431         /*
 432          * We need one cmd_line_pdu, and argc number of cmd_single_line_pdu
 433          */
 434         mem += sizeof(*clp) + (client->argc * sizeof(*cslp));
 435
 436         pdu = malloc(mem);
 437         clp = pdu;
 438         offset = sizeof(*clp);
 439
 440         for (i = 0; i < client->argc; i++) {
 441                 uint16_t arg_len = lens[i];
 442
 443                 cslp = pdu + offset;
 444                 strcpy((char *) cslp->text, client->argv[i]);
 445                 cslp->len = cpu_to_le16(arg_len);
 446                 offset += sizeof(*cslp) + arg_len;
 447         }
 448
 449         free(lens);
 450         clp->lines = cpu_to_le16(client->argc);
 451         ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOBLINE, pdu, mem, 0);
 452         free(pdu);
 453         return ret;
 454 }
 455
 456 int fio_clients_connect(void)
 457 {
 458         struct fio_client *client;
 459         struct flist_head *entry, *tmp;
 460         int ret;
 461
 462 #ifdef WIN32
 463         WSADATA wsd;
 464         WSAStartup(MAKEWORD(2,2), &wsd);
 465 #endif
 466
 467         dprint(FD_NET, "client: connect all\n");
 468
 469         client_signal_handler();
 470
 471         flist_for_each_safe(entry, tmp, &client_list) {
 472                 client = flist_entry(entry, struct fio_client, list);
 473
 474                 ret = fio_client_connect(client);
 475                 if (ret) {
 476                         remove_client(client);
 477                         continue;
 478                 }
 479
 480                 if (client->argc > 1)
 481                         send_client_cmd_line(client);
 482         }
 483
 484         return !nr_clients;
 485 }
 486
 487 int fio_start_client(struct fio_client *client)
 488 {
 489         dprint(FD_NET, "client: start %s\n", client->hostname);
 490         return fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_RUN, 0, NULL);
 491 }
 492
 493 int fio_start_all_clients(void)
 494 {
 495         struct fio_client *client;
 496         struct flist_head *entry, *tmp;
 497         int ret;
 498
 499         dprint(FD_NET, "client: start all\n");
 500
 501         flist_for_each_safe(entry, tmp, &client_list) {
 502                 client = flist_entry(entry, struct fio_client, list);
 503
 504                 ret = fio_start_client(client);
 505                 if (ret) {
 506                         remove_client(client);
 507                         continue;
 508                 }
 509         }
 510
 511         return flist_empty(&client_list);
 512 }
 513
 514 /*
 515  * Send file contents to server backend. We could use sendfile(), but to remain
 516  * more portable lets just read/write the darn thing.
 517  */
 518 static int __fio_client_send_ini(struct fio_client *client, const char *filename)
 519 {
 520         struct stat sb;
 521         char *p, *buf;
 522         off_t len;
 523         int fd, ret;
 524
 525         dprint(FD_NET, "send ini %s to %s\n", filename, client->hostname);
 526
 527         fd = open(filename, O_RDONLY);
 528         if (fd < 0) {
 529                 int ret = -errno;
 530
 531                 log_err("fio: job file <%s> open: %s\n", filename, strerror(errno));
 532                 return ret;
 533         }
 534
 535         if (fstat(fd, &sb) < 0) {
 536                 int ret = -errno;
 537
 538                 log_err("fio: job file stat: %s\n", strerror(errno));
 539                 close(fd);
 540                 return ret;
 541         }
 542
 543         buf = malloc(sb.st_size);
 544
 545         len = sb.st_size;
 546         p = buf;
 547         do {
 548                 ret = read(fd, p, len);
 549                 if (ret > 0) {
 550                         len -= ret;
 551                         if (!len)
 552                                 break;
 553                         p += ret;
 554                         continue;
 555                 } else if (!ret)
 556                         break;
 557                 else if (errno == EAGAIN || errno == EINTR)
 558                         continue;
 559         } while (1);
 560
 561         if (len) {
 562                 log_err("fio: failed reading job file %s\n", filename);
 563                 close(fd);
 564                 free(buf);
 565                 return 1;
 566         }
 567
 568         client->sent_job = 1;
 569         ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOB, buf, sb.st_size, 0);
 570         free(buf);
 571         close(fd);
 572         return ret;
 573 }
 574
 575 int fio_client_send_ini(struct fio_client *client, const char *filename)
 576 {
 577         int ret;
 578
 579         ret = __fio_client_send_ini(client, filename);
 580         if (!ret)
 581                 client->sent_job = 1;
 582
 583         return ret;
 584 }
 585
 586 int fio_clients_send_ini(const char *filename)
 587 {
 588         struct fio_client *client;
 589         struct flist_head *entry, *tmp;
 590
 591         flist_for_each_safe(entry, tmp, &client_list) {
 592                 client = flist_entry(entry, struct fio_client, list);
 593
 594                 if (fio_client_send_ini(client, filename))
 595                         remove_client(client);
 596         }
 597
 598         return !nr_clients;
 599 }
 600
 601 static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
 602 {
 603         dst->max_val    = le64_to_cpu(src->max_val);
 604         dst->min_val    = le64_to_cpu(src->min_val);
 605         dst->samples    = le64_to_cpu(src->samples);
 606
 607         /*
 608          * Floats arrive as IEEE 754 encoded uint64_t, convert back to double
 609          */
 610         dst->mean.u.f   = fio_uint64_to_double(le64_to_cpu(dst->mean.u.i));
 611         dst->S.u.f      = fio_uint64_to_double(le64_to_cpu(dst->S.u.i));
 612 }
 613
 614 static void convert_ts(struct thread_stat *dst, struct thread_stat *src)
 615 {
 616         int i, j;
 617
 618         dst->error      = le32_to_cpu(src->error);
 619         dst->groupid    = le32_to_cpu(src->groupid);
 620         dst->pid        = le32_to_cpu(src->pid);
 621         dst->members    = le32_to_cpu(src->members);
 622
 623         for (i = 0; i < 2; i++) {
 624                 convert_io_stat(&dst->clat_stat[i], &src->clat_stat[i]);
 625                 convert_io_stat(&dst->slat_stat[i], &src->slat_stat[i]);
 626                 convert_io_stat(&dst->lat_stat[i], &src->lat_stat[i]);
 627                 convert_io_stat(&dst->bw_stat[i], &src->bw_stat[i]);
 628         }
 629
 630         dst->usr_time           = le64_to_cpu(src->usr_time);
 631         dst->sys_time           = le64_to_cpu(src->sys_time);
 632         dst->ctx                = le64_to_cpu(src->ctx);
 633         dst->minf               = le64_to_cpu(src->minf);
 634         dst->majf               = le64_to_cpu(src->majf);
 635         dst->clat_percentiles   = le64_to_cpu(src->clat_percentiles);
 636
 637         for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
 638                 fio_fp64_t *fps = &src->percentile_list[i];
 639                 fio_fp64_t *fpd = &dst->percentile_list[i];
 640
 641                 fpd->u.f = fio_uint64_to_double(le64_to_cpu(fps->u.i));
 642         }
 643
 644         for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
 645                 dst->io_u_map[i]        = le32_to_cpu(src->io_u_map[i]);
 646                 dst->io_u_submit[i]     = le32_to_cpu(src->io_u_submit[i]);
 647                 dst->io_u_complete[i]   = le32_to_cpu(src->io_u_complete[i]);
 648         }
 649
 650         for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
 651                 dst->io_u_lat_u[i]      = le32_to_cpu(src->io_u_lat_u[i]);
 652                 dst->io_u_lat_m[i]      = le32_to_cpu(src->io_u_lat_m[i]);
 653         }
 654
 655         for (i = 0; i < 2; i++)
 656                 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
 657                         dst->io_u_plat[i][j] = le32_to_cpu(src->io_u_plat[i][j]);
 658
 659         for (i = 0; i < 3; i++) {
 660                 dst->total_io_u[i]      = le64_to_cpu(src->total_io_u[i]);
 661                 dst->short_io_u[i]      = le64_to_cpu(src->short_io_u[i]);
 662         }
 663
 664         dst->total_submit       = le64_to_cpu(src->total_submit);
 665         dst->total_complete     = le64_to_cpu(src->total_complete);
 666
 667         for (i = 0; i < 2; i++) {
 668                 dst->io_bytes[i]        = le64_to_cpu(src->io_bytes[i]);
 669                 dst->runtime[i]         = le64_to_cpu(src->runtime[i]);
 670         }
 671
 672         dst->total_run_time     = le64_to_cpu(src->total_run_time);
 673         dst->continue_on_error  = le16_to_cpu(src->continue_on_error);
 674         dst->total_err_count    = le64_to_cpu(src->total_err_count);
 675         dst->first_error        = le32_to_cpu(src->first_error);
 676         dst->kb_base            = le32_to_cpu(src->kb_base);
 677 }
 678
 679 static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
 680 {
 681         int i;
 682
 683         for (i = 0; i < 2; i++) {
 684                 dst->max_run[i]         = le64_to_cpu(src->max_run[i]);
 685                 dst->min_run[i]         = le64_to_cpu(src->min_run[i]);
 686                 dst->max_bw[i]          = le64_to_cpu(src->max_bw[i]);
 687                 dst->min_bw[i]          = le64_to_cpu(src->min_bw[i]);
 688                 dst->io_kb[i]           = le64_to_cpu(src->io_kb[i]);
 689                 dst->agg[i]             = le64_to_cpu(src->agg[i]);
 690         }
 691
 692         dst->kb_base    = le32_to_cpu(src->kb_base);
 693         dst->groupid    = le32_to_cpu(src->groupid);
 694 }
 695
 696 static void handle_ts(struct fio_client *client, struct fio_net_cmd *cmd)
 697 {
 698         struct cmd_ts_pdu *p = (struct cmd_ts_pdu *) cmd->payload;
 699
 700         show_thread_status(&p->ts, &p->rs);
 701
 702         if (sum_stat_clients == 1)
 703                 return;
 704
 705         sum_thread_stats(&client_ts, &p->ts, sum_stat_nr);
 706         sum_group_stats(&client_gs, &p->rs);
 707
 708         client_ts.members++;
 709         client_ts.groupid = p->ts.groupid;
 710
 711         if (++sum_stat_nr == sum_stat_clients) {
 712                 strcpy(client_ts.name, "All clients");
 713                 show_thread_status(&client_ts, &client_gs);
 714         }
 715 }
 716
 717 static void handle_gs(struct fio_client *client, struct fio_net_cmd *cmd)
 718 {
 719         struct group_run_stats *gs = (struct group_run_stats *) cmd->payload;
 720
 721         show_group_stats(gs);
 722 }
 723
 724 static void handle_text(struct fio_client *client, struct fio_net_cmd *cmd)
 725 {
 726         struct cmd_text_pdu *pdu = (struct cmd_text_pdu *) cmd->payload;
 727         const char *buf = (const char *) pdu->buf;
 728         const char *name;
 729         int fio_unused ret;
 730
 731         name = client->name ? client->name : client->hostname;
 732
 733         if (!client->skip_newline)
 734                 fprintf(f_out, "<%s> ", name);
 735         ret = fwrite(buf, pdu->buf_len, 1, f_out);
 736         fflush(f_out);
 737         client->skip_newline = strchr(buf, '\n') == NULL;
 738 }
 739
 740 static void convert_agg(struct disk_util_agg *agg)
 741 {
 742         int i;
 743
 744         for (i = 0; i < 2; i++) {
 745                 agg->ios[i]     = le32_to_cpu(agg->ios[i]);
 746                 agg->merges[i]  = le32_to_cpu(agg->merges[i]);
 747                 agg->sectors[i] = le64_to_cpu(agg->sectors[i]);
 748                 agg->ticks[i]   = le32_to_cpu(agg->ticks[i]);
 749         }
 750
 751         agg->io_ticks           = le32_to_cpu(agg->io_ticks);
 752         agg->time_in_queue      = le32_to_cpu(agg->time_in_queue);
 753         agg->slavecount         = le32_to_cpu(agg->slavecount);
 754         agg->max_util.u.f       = fio_uint64_to_double(__le64_to_cpu(agg->max_util.u.i));
 755 }
 756
 757 static void convert_dus(struct disk_util_stat *dus)
 758 {
 759         int i;
 760
 761         for (i = 0; i < 2; i++) {
 762                 dus->ios[i]     = le32_to_cpu(dus->ios[i]);
 763                 dus->merges[i]  = le32_to_cpu(dus->merges[i]);
 764                 dus->sectors[i] = le64_to_cpu(dus->sectors[i]);
 765                 dus->ticks[i]   = le32_to_cpu(dus->ticks[i]);
 766         }
 767
 768         dus->io_ticks           = le32_to_cpu(dus->io_ticks);
 769         dus->time_in_queue      = le32_to_cpu(dus->time_in_queue);
 770         dus->msec               = le64_to_cpu(dus->msec);
 771 }
 772
 773 static void handle_du(struct fio_client *client, struct fio_net_cmd *cmd)
 774 {
 775         struct cmd_du_pdu *du = (struct cmd_du_pdu *) cmd->payload;
 776
 777         if (!client->disk_stats_shown) {
 778                 client->disk_stats_shown = 1;
 779                 log_info("\nDisk stats (read/write):\n");
 780         }
 781
 782         print_disk_util(&du->dus, &du->agg, terse_output);
 783 }
 784
 785 static void convert_jobs_eta(struct jobs_eta *je)
 786 {
 787         int i;
 788
 789         je->nr_running          = le32_to_cpu(je->nr_running);
 790         je->nr_ramp             = le32_to_cpu(je->nr_ramp);
 791         je->nr_pending          = le32_to_cpu(je->nr_pending);
 792         je->files_open          = le32_to_cpu(je->files_open);
 793
 794         for (i = 0; i < 2; i++) {
 795                 je->m_rate[i]           = le32_to_cpu(je->m_rate[i]);
 796                 je->t_rate[i]           = le32_to_cpu(je->t_rate[i]);
 797                 je->m_iops[i]           = le32_to_cpu(je->m_iops[i]);
 798                 je->t_iops[i]           = le32_to_cpu(je->t_iops[i]);
 799                 je->rate[i]     = le32_to_cpu(je->rate[i]);
 800                 je->iops[i]     = le32_to_cpu(je->iops[i]);
 801         }
 802
 803         je->elapsed_sec         = le64_to_cpu(je->elapsed_sec);
 804         je->eta_sec             = le64_to_cpu(je->eta_sec);
 805         je->nr_threads          = le32_to_cpu(je->nr_threads);
 806 }
 807
 808 void fio_client_sum_jobs_eta(struct jobs_eta *dst, struct jobs_eta *je)
 809 {
 810         int i;
 811
 812         dst->nr_running         += je->nr_running;
 813         dst->nr_ramp            += je->nr_ramp;
 814         dst->nr_pending         += je->nr_pending;
 815         dst->files_open         += je->files_open;
 816
 817         for (i = 0; i < 2; i++) {
 818                 dst->m_rate[i]  += je->m_rate[i];
 819                 dst->t_rate[i]  += je->t_rate[i];
 820                 dst->m_iops[i]  += je->m_iops[i];
 821                 dst->t_iops[i]  += je->t_iops[i];
 822                 dst->rate[i]    += je->rate[i];
 823                 dst->iops[i]    += je->iops[i];
 824         }
 825
 826         dst->elapsed_sec        += je->elapsed_sec;
 827
 828         if (je->eta_sec > dst->eta_sec)
 829                 dst->eta_sec = je->eta_sec;
 830
 831         dst->nr_threads         += je->nr_threads;
 832         /* we need to handle je->run_str too ... */
 833 }
 834
 835 void fio_client_dec_jobs_eta(struct client_eta *eta, client_eta_op eta_fn)
 836 {
 837         if (!--eta->pending) {
 838                 eta_fn(&eta->eta);
 839                 free(eta);
 840         }
 841 }
 842
 843 static void remove_reply_cmd(struct fio_client *client, struct fio_net_cmd *cmd)
 844 {
 845         struct fio_net_int_cmd *icmd = NULL;
 846         struct flist_head *entry;
 847
 848         flist_for_each(entry, &client->cmd_list) {
 849                 icmd = flist_entry(entry, struct fio_net_int_cmd, list);
 850
 851                 if (cmd->tag == (uintptr_t) icmd)
 852                         break;
 853
 854                 icmd = NULL;
 855         }
 856
 857         if (!icmd) {
 858                 log_err("fio: client: unable to find matching tag\n");
 859                 return;
 860         }
 861
 862         flist_del(&icmd->list);
 863         cmd->tag = icmd->saved_tag;
 864         free(icmd);
 865 }
 866
 867 static void handle_eta(struct fio_client *client, struct fio_net_cmd *cmd)
 868 {
 869         struct jobs_eta *je = (struct jobs_eta *) cmd->payload;
 870         struct client_eta *eta = (struct client_eta *) (uintptr_t) cmd->tag;
 871
 872         dprint(FD_NET, "client: got eta tag %p, %d\n", eta, eta->pending);
 873
 874         assert(client->eta_in_flight == eta);
 875
 876         client->eta_in_flight = NULL;
 877         flist_del_init(&client->eta_list);
 878
 879         if (client->ops->jobs_eta)
 880                 client->ops->jobs_eta(client, je);
 881
 882         fio_client_sum_jobs_eta(&eta->eta, je);
 883         fio_client_dec_jobs_eta(eta, client->ops->eta);
 884 }
 885
 886 static void handle_probe(struct fio_client *client, struct fio_net_cmd *cmd)
 887 {
 888         struct cmd_probe_pdu *probe = (struct cmd_probe_pdu *) cmd->payload;
 889         const char *os, *arch;
 890         char bit[16];
 891
 892         os = fio_get_os_string(probe->os);
 893         if (!os)
 894                 os = "unknown";
 895
 896         arch = fio_get_arch_string(probe->arch);
 897         if (!arch)
 898                 os = "unknown";
 899
 900         sprintf(bit, "%d-bit", probe->bpp * 8);
 901
 902         log_info("hostname=%s, be=%u, %s, os=%s, arch=%s, fio=%u.%u.%u\n",
 903                 probe->hostname, probe->bigendian, bit, os, arch,
 904                 probe->fio_major, probe->fio_minor, probe->fio_patch);
 905
 906         if (!client->name)
 907                 client->name = strdup((char *) probe->hostname);
 908 }
 909
 910 static void handle_start(struct fio_client *client, struct fio_net_cmd *cmd)
 911 {
 912         struct cmd_start_pdu *pdu = (struct cmd_start_pdu *) cmd->payload;
 913
 914         client->state = Client_started;
 915         client->jobs = pdu->jobs;
 916 }
 917
 918 static void handle_stop(struct fio_client *client, struct fio_net_cmd *cmd)
 919 {
 920         if (client->error)
 921                 log_info("client <%s>: exited with error %d\n", client->hostname, client->error);
 922 }
 923
 924 static void convert_stop(struct fio_net_cmd *cmd)
 925 {
 926         struct cmd_end_pdu *pdu = (struct cmd_end_pdu *) cmd->payload;
 927
 928         pdu->error = le32_to_cpu(pdu->error);
 929 }
 930
 931 static void convert_text(struct fio_net_cmd *cmd)
 932 {
 933         struct cmd_text_pdu *pdu = (struct cmd_text_pdu *) cmd->payload;
 934
 935         pdu->level      = le32_to_cpu(pdu->level);
 936         pdu->buf_len    = le32_to_cpu(pdu->buf_len);
 937         pdu->log_sec    = le64_to_cpu(pdu->log_sec);
 938         pdu->log_usec   = le64_to_cpu(pdu->log_usec);
 939 }
 940
 941 int fio_handle_client(struct fio_client *client)
 942 {
 943         struct client_ops *ops = client->ops;
 944         struct fio_net_cmd *cmd;
 945
 946         dprint(FD_NET, "client: handle %s\n", client->hostname);
 947
 948         cmd = fio_net_recv_cmd(client->fd);
 949         if (!cmd)
 950                 return 0;
 951
 952         dprint(FD_NET, "client: got cmd op %s from %s (pdu=%u)\n",
 953                 fio_server_op(cmd->opcode), client->hostname, cmd->pdu_len);
 954
 955         switch (cmd->opcode) {
 956         case FIO_NET_CMD_QUIT:
 957                 if (ops->quit)
 958                         ops->quit(client);
 959                 remove_client(client);
 960                 free(cmd);
 961                 break;
 962         case FIO_NET_CMD_TEXT:
 963                 convert_text(cmd);
 964                 ops->text_op(client, cmd);
 965                 free(cmd);
 966                 break;
 967         case FIO_NET_CMD_DU: {
 968                 struct cmd_du_pdu *du = (struct cmd_du_pdu *) cmd->payload;
 969
 970                 convert_dus(&du->dus);
 971                 convert_agg(&du->agg);
 972
 973                 ops->disk_util(client, cmd);
 974                 free(cmd);
 975                 break;
 976                 }
 977         case FIO_NET_CMD_TS: {
 978                 struct cmd_ts_pdu *p = (struct cmd_ts_pdu *) cmd->payload;
 979
 980                 convert_ts(&p->ts, &p->ts);
 981                 convert_gs(&p->rs, &p->rs);
 982
 983                 ops->thread_status(client, cmd);
 984                 free(cmd);
 985                 break;
 986                 }
 987         case FIO_NET_CMD_GS: {
 988                 struct group_run_stats *gs = (struct group_run_stats *) cmd->payload;
 989
 990                 convert_gs(gs, gs);
 991
 992                 ops->group_stats(client, cmd);
 993                 free(cmd);
 994                 break;
 995                 }
 996         case FIO_NET_CMD_ETA: {
 997                 struct jobs_eta *je = (struct jobs_eta *) cmd->payload;
 998
 999                 remove_reply_cmd(client, cmd);
1000                 convert_jobs_eta(je);
1001                 handle_eta(client, cmd);
1002                 free(cmd);
1003                 break;
1004                 }
1005         case FIO_NET_CMD_PROBE:
1006                 remove_reply_cmd(client, cmd);
1007                 ops->probe(client, cmd);
1008                 free(cmd);
1009                 break;
1010         case FIO_NET_CMD_SERVER_START:
1011                 client->state = Client_running;
1012                 if (ops->job_start)
1013                         ops->job_start(client, cmd);
1014                 free(cmd);
1015                 break;
1016         case FIO_NET_CMD_START: {
1017                 struct cmd_start_pdu *pdu = (struct cmd_start_pdu *) cmd->payload;
1018
1019                 pdu->jobs = le32_to_cpu(pdu->jobs);
1020                 ops->start(client, cmd);
1021                 free(cmd);
1022                 break;
1023                 }
1024         case FIO_NET_CMD_STOP: {
1025                 struct cmd_end_pdu *pdu = (struct cmd_end_pdu *) cmd->payload;
1026
1027                 convert_stop(cmd);
1028                 client->state = Client_stopped;
1029                 client->error = pdu->error;
1030                 ops->stop(client, cmd);
1031                 free(cmd);
1032                 break;
1033                 }
1034         case FIO_NET_CMD_ADD_JOB:
1035                 if (ops->add_job)
1036                         ops->add_job(client, cmd);
1037                 free(cmd);
1038                 break;
1039         default:
1040                 log_err("fio: unknown client op: %s\n", fio_server_op(cmd->opcode));
1041                 free(cmd);
1042                 break;
1043         }
1044
1045         return 1;
1046 }
1047
1048 static void request_client_etas(struct client_ops *ops)
1049 {
1050         struct fio_client *client;
1051         struct flist_head *entry;
1052         struct client_eta *eta;
1053         int skipped = 0;
1054
1055         dprint(FD_NET, "client: request eta (%d)\n", nr_clients);
1056
1057         eta = malloc(sizeof(*eta));
1058         memset(&eta->eta, 0, sizeof(eta->eta));
1059         eta->pending = nr_clients;
1060
1061         flist_for_each(entry, &client_list) {
1062                 client = flist_entry(entry, struct fio_client, list);
1063
1064                 if (!flist_empty(&client->eta_list)) {
1065                         skipped++;
1066                         continue;
1067                 }
1068                 if (client->state != Client_running)
1069                         continue;
1070
1071                 assert(!client->eta_in_flight);
1072                 flist_add_tail(&client->eta_list, &eta_list);
1073                 client->eta_in_flight = eta;
1074                 fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_SEND_ETA,
1075                                         (uintptr_t) eta, &client->cmd_list);
1076         }
1077
1078         while (skipped--)
1079                 fio_client_dec_jobs_eta(eta, ops->eta);
1080
1081         dprint(FD_NET, "client: requested eta tag %p\n", eta);
1082 }
1083
1084 static int client_check_cmd_timeout(struct fio_client *client,
1085                                     struct timeval *now)
1086 {
1087         struct fio_net_int_cmd *cmd;
1088         struct flist_head *entry, *tmp;
1089         int ret = 0;
1090
1091         flist_for_each_safe(entry, tmp, &client->cmd_list) {
1092                 cmd = flist_entry(entry, struct fio_net_int_cmd, list);
1093
1094                 if (mtime_since(&cmd->tv, now) < FIO_NET_CLIENT_TIMEOUT)
1095                         continue;
1096
1097                 log_err("fio: client %s, timeout on cmd %s\n", client->hostname,
1098                                                 fio_server_op(cmd->cmd.opcode));
1099                 flist_del(&cmd->list);
1100                 free(cmd);
1101                 ret = 1;
1102         }
1103
1104         return flist_empty(&client->cmd_list) && ret;
1105 }
1106
1107 static int fio_check_clients_timed_out(void)
1108 {
1109         struct fio_client *client;
1110         struct flist_head *entry, *tmp;
1111         struct timeval tv;
1112         int ret = 0;
1113
1114         gettimeofday(&tv, NULL);
1115
1116         flist_for_each_safe(entry, tmp, &client_list) {
1117                 client = flist_entry(entry, struct fio_client, list);
1118
1119                 if (flist_empty(&client->cmd_list))
1120                         continue;
1121
1122                 if (!client_check_cmd_timeout(client, &tv))
1123                         continue;
1124
1125                 if (client->ops->timed_out)
1126                         client->ops->timed_out(client);
1127                 else
1128                         log_err("fio: client %s timed out\n", client->hostname);
1129
1130                 remove_client(client);
1131                 ret = 1;
1132         }
1133
1134         return ret;
1135 }
1136
1137 int fio_handle_clients(struct client_ops *ops)
1138 {
1139         struct pollfd *pfds;
1140         int i, ret = 0, retval = 0;
1141
1142         gettimeofday(&eta_tv, NULL);
1143
1144         pfds = malloc(nr_clients * sizeof(struct pollfd));
1145
1146         sum_stat_clients = nr_clients;
1147         init_thread_stat(&client_ts);
1148         init_group_run_stat(&client_gs);
1149
1150         while (!exit_backend && nr_clients) {
1151                 struct flist_head *entry, *tmp;
1152                 struct fio_client *client;
1153
1154                 i = 0;
1155                 flist_for_each_safe(entry, tmp, &client_list) {
1156                         client = flist_entry(entry, struct fio_client, list);
1157
1158                         if (!client->sent_job && !client->ops->stay_connected &&
1159                             flist_empty(&client->cmd_list)) {
1160                                 remove_client(client);
1161                                 continue;
1162                         }
1163
1164                         pfds[i].fd = client->fd;
1165                         pfds[i].events = POLLIN;
1166                         i++;
1167                 }
1168
1169                 if (!nr_clients)
1170                         break;
1171
1172                 assert(i == nr_clients);
1173
1174                 do {
1175                         struct timeval tv;
1176
1177                         gettimeofday(&tv, NULL);
1178                         if (mtime_since(&eta_tv, &tv) >= ops->eta_msec) {
1179                                 request_client_etas(ops);
1180                                 memcpy(&eta_tv, &tv, sizeof(tv));
1181
1182                                 if (fio_check_clients_timed_out())
1183                                         break;
1184                         }
1185
1186                         ret = poll(pfds, nr_clients, 100);
1187                         if (ret < 0) {
1188                                 if (errno == EINTR)
1189                                         continue;
1190                                 log_err("fio: poll clients: %s\n", strerror(errno));
1191                                 break;
1192                         } else if (!ret)
1193                                 continue;
1194                 } while (ret <= 0);
1195
1196                 for (i = 0; i < nr_clients; i++) {
1197                         if (!(pfds[i].revents & POLLIN))
1198                                 continue;
1199
1200                         client = find_client_by_fd(pfds[i].fd);
1201                         if (!client) {
1202                                 log_err("fio: unknown client fd %d\n", pfds[i].fd);
1203                                 continue;
1204                         }
1205                         if (!fio_handle_client(client)) {
1206                                 log_info("client: host=%s disconnected\n",
1207                                                 client->hostname);
1208                                 remove_client(client);
1209                                 retval = 1;
1210                         } else if (client->error)
1211                                 retval = 1;
1212                         fio_put_client(client);
1213                 }
1214         }
1215
1216         free(pfds);
1217         return retval;
1218 }