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