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 "server.h"
  20 #include "flist.h"
  21 #include "hash.h"
  22
  23 struct fio_client {
  24         struct flist_head list;
  25         struct flist_head hash_list;
  26         struct sockaddr_in addr;
  27         struct sockaddr_un addr_un;
  28         char *hostname;
  29         int port;
  30         int fd;
  31
  32         int state;
  33         int skip_newline;
  34         int is_sock;
  35
  36         uint16_t argc;
  37         char **argv;
  38 };
  39
  40 enum {
  41         Client_created          = 0,
  42         Client_connected        = 1,
  43         Client_started          = 2,
  44         Client_stopped          = 3,
  45         Client_exited           = 4,
  46 };
  47
  48 static FLIST_HEAD(client_list);
  49
  50 #define FIO_CLIENT_HASH_BITS    7
  51 #define FIO_CLIENT_HASH_SZ      (1 << FIO_CLIENT_HASH_BITS)
  52 #define FIO_CLIENT_HASH_MASK    (FIO_CLIENT_HASH_SZ - 1)
  53 static struct flist_head client_hash[FIO_CLIENT_HASH_SZ];
  54
  55 static int handle_client(struct fio_client *client);
  56
  57 static void fio_client_add_hash(struct fio_client *client)
  58 {
  59         int bucket = hash_long(client->fd, FIO_CLIENT_HASH_BITS);
  60
  61         bucket &= FIO_CLIENT_HASH_MASK;
  62         flist_add(&client->hash_list, &client_hash[bucket]);
  63 }
  64
  65 static void fio_client_remove_hash(struct fio_client *client)
  66 {
  67         if (!flist_empty(&client->hash_list))
  68                 flist_del_init(&client->hash_list);
  69 }
  70
  71 static void fio_init fio_client_hash_init(void)
  72 {
  73         int i;
  74
  75         for (i = 0; i < FIO_CLIENT_HASH_SZ; i++)
  76                 INIT_FLIST_HEAD(&client_hash[i]);
  77 }
  78
  79 static struct fio_client *find_client_by_fd(int fd)
  80 {
  81         int bucket = hash_long(fd, FIO_CLIENT_HASH_BITS) & FIO_CLIENT_HASH_MASK;
  82         struct fio_client *client;
  83         struct flist_head *entry;
  84
  85         flist_for_each(entry, &client_hash[bucket]) {
  86                 client = flist_entry(entry, struct fio_client, hash_list);
  87
  88                 if (client->fd == fd)
  89                         return client;
  90         }
  91
  92         return NULL;
  93 }
  94
  95 static void remove_client(struct fio_client *client)
  96 {
  97         dprint(FD_NET, "client: removed <%s>\n", client->hostname);
  98         flist_del(&client->list);
  99
 100         fio_client_remove_hash(client);
 101
 102         free(client->hostname);
 103         if (client->argv)
 104                 free(client->argv);
 105
 106         free(client);
 107         nr_clients--;
 108 }
 109
 110 static int __fio_client_add_cmd_option(struct fio_client *client,
 111                                        const char *opt)
 112 {
 113         int index;
 114
 115         if (client->argc == FIO_NET_CMD_JOBLINE_ARGV) {
 116                 log_err("fio: max cmd line number reached.\n");
 117                 log_err("fio: cmd line <%s> has been ignored.\n", opt);
 118                 return 1;
 119         }
 120
 121         index = client->argc++;
 122         client->argv = realloc(client->argv, sizeof(char *) * client->argc);
 123         client->argv[index] = strdup(opt);
 124         dprint(FD_NET, "client: add cmd %d: %s\n", index, opt);
 125         return 0;
 126 }
 127
 128 int fio_client_add_cmd_option(void *cookie, const char *opt)
 129 {
 130         struct fio_client *client = cookie;
 131
 132         if (!client || !opt)
 133                 return 0;
 134
 135         return __fio_client_add_cmd_option(client, opt);
 136 }
 137
 138 int fio_client_add(const char *hostname, void **cookie)
 139 {
 140         struct fio_client *client;
 141
 142         client = malloc(sizeof(*client));
 143         memset(client, 0, sizeof(*client));
 144
 145         INIT_FLIST_HEAD(&client->list);
 146         INIT_FLIST_HEAD(&client->hash_list);
 147
 148         if (fio_server_parse_string(hostname, &client->hostname,
 149                                         &client->is_sock, &client->port,
 150                                         &client->addr.sin_addr))
 151                 return -1;
 152
 153         client->fd = -1;
 154
 155         __fio_client_add_cmd_option(client, "fio");
 156
 157         flist_add(&client->list, &client_list);
 158         nr_clients++;
 159         dprint(FD_NET, "client: added <%s>\n", client->hostname);
 160         *cookie = client;
 161         return 0;
 162 }
 163
 164 static int fio_client_connect_ip(struct fio_client *client)
 165 {
 166         int fd;
 167
 168         client->addr.sin_family = AF_INET;
 169         client->addr.sin_port = htons(client->port);
 170
 171         fd = socket(AF_INET, SOCK_STREAM, 0);
 172         if (fd < 0) {
 173                 log_err("fio: socket: %s\n", strerror(errno));
 174                 return -1;
 175         }
 176
 177         if (connect(fd, (struct sockaddr *) &client->addr, sizeof(client->addr)) < 0) {
 178                 log_err("fio: connect: %s\n", strerror(errno));
 179                 log_err("fio: failed to connect to %s:%u\n", client->hostname,
 180                                                                 client->port);
 181                 close(fd);
 182                 return -1;
 183         }
 184
 185         return fd;
 186 }
 187
 188 static int fio_client_connect_sock(struct fio_client *client)
 189 {
 190         struct sockaddr_un *addr = &client->addr_un;
 191         fio_socklen_t len;
 192         int fd;
 193
 194         memset(addr, 0, sizeof(*addr));
 195         addr->sun_family = AF_UNIX;
 196         strcpy(addr->sun_path, client->hostname);
 197
 198         fd = socket(AF_UNIX, SOCK_STREAM, 0);
 199         if (fd < 0) {
 200                 log_err("fio: socket: %s\n", strerror(errno));
 201                 return -1;
 202         }
 203
 204         len = sizeof(addr->sun_family) + strlen(addr->sun_path) + 1;
 205         if (connect(fd, (struct sockaddr *) addr, len) < 0) {
 206                 log_err("fio: connect; %s\n", strerror(errno));
 207                 close(fd);
 208                 return -1;
 209         }
 210
 211         return fd;
 212 }
 213
 214 static int fio_client_connect(struct fio_client *client)
 215 {
 216         int fd;
 217
 218         dprint(FD_NET, "client: connect to host %s\n", client->hostname);
 219
 220         if (client->is_sock)
 221                 fd = fio_client_connect_sock(client);
 222         else
 223                 fd = fio_client_connect_ip(client);
 224
 225         if (fd < 0)
 226                 return 1;
 227
 228         client->fd = fd;
 229         fio_client_add_hash(client);
 230         client->state = Client_connected;
 231         return 0;
 232 }
 233
 234 void fio_clients_terminate(void)
 235 {
 236         struct flist_head *entry;
 237         struct fio_client *client;
 238
 239         dprint(FD_NET, "client: terminate clients\n");
 240
 241         flist_for_each(entry, &client_list) {
 242                 client = flist_entry(entry, struct fio_client, list);
 243
 244                 fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_QUIT, 0);
 245         }
 246 }
 247
 248 static void sig_int(int sig)
 249 {
 250         dprint(FD_NET, "client: got signal %d\n", sig);
 251         fio_clients_terminate();
 252 }
 253
 254 static void client_signal_handler(void)
 255 {
 256         struct sigaction act;
 257
 258         memset(&act, 0, sizeof(act));
 259         act.sa_handler = sig_int;
 260         act.sa_flags = SA_RESTART;
 261         sigaction(SIGINT, &act, NULL);
 262
 263         memset(&act, 0, sizeof(act));
 264         act.sa_handler = sig_int;
 265         act.sa_flags = SA_RESTART;
 266         sigaction(SIGTERM, &act, NULL);
 267 }
 268
 269 static void probe_client(struct fio_client *client)
 270 {
 271         dprint(FD_NET, "client: send probe\n");
 272
 273         fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_PROBE, 0);
 274         handle_client(client);
 275 }
 276
 277 static int send_client_cmd_line(struct fio_client *client)
 278 {
 279         struct cmd_line_pdu *pdu;
 280         int i, ret;
 281
 282         dprint(FD_NET, "client: send cmdline %d\n", client->argc);
 283
 284         pdu = malloc(sizeof(*pdu));
 285         for (i = 0; i < client->argc; i++)
 286                 strcpy((char *) pdu->argv[i], client->argv[i]);
 287
 288         pdu->argc = cpu_to_le16(client->argc);
 289         ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOBLINE, pdu, sizeof(*pdu));
 290         free(pdu);
 291         return ret;
 292 }
 293
 294 int fio_clients_connect(void)
 295 {
 296         struct fio_client *client;
 297         struct flist_head *entry, *tmp;
 298         int ret;
 299
 300         dprint(FD_NET, "client: connect all\n");
 301
 302         client_signal_handler();
 303
 304         flist_for_each_safe(entry, tmp, &client_list) {
 305                 client = flist_entry(entry, struct fio_client, list);
 306
 307                 ret = fio_client_connect(client);
 308                 if (ret) {
 309                         remove_client(client);
 310                         continue;
 311                 }
 312
 313                 probe_client(client);
 314
 315                 if (client->argc > 1)
 316                         send_client_cmd_line(client);
 317         }
 318
 319         return !nr_clients;
 320 }
 321
 322 /*
 323  * Send file contents to server backend. We could use sendfile(), but to remain
 324  * more portable lets just read/write the darn thing.
 325  */
 326 static int fio_client_send_ini(struct fio_client *client, const char *filename)
 327 {
 328         struct stat sb;
 329         char *p, *buf;
 330         off_t len;
 331         int fd, ret;
 332
 333         dprint(FD_NET, "send ini %s to %s\n", filename, client->hostname);
 334
 335         fd = open(filename, O_RDONLY);
 336         if (fd < 0) {
 337                 log_err("fio: job file <%s> open: %s\n", filename, strerror(errno));
 338                 return 1;
 339         }
 340
 341         if (fstat(fd, &sb) < 0) {
 342                 log_err("fio: job file stat: %s\n", strerror(errno));
 343                 close(fd);
 344                 return 1;
 345         }
 346
 347         buf = malloc(sb.st_size);
 348
 349         len = sb.st_size;
 350         p = buf;
 351         do {
 352                 ret = read(fd, p, len);
 353                 if (ret > 0) {
 354                         len -= ret;
 355                         if (!len)
 356                                 break;
 357                         p += ret;
 358                         continue;
 359                 } else if (!ret)
 360                         break;
 361                 else if (errno == EAGAIN || errno == EINTR)
 362                         continue;
 363         } while (1);
 364
 365         if (len) {
 366                 log_err("fio: failed reading job file %s\n", filename);
 367                 close(fd);
 368                 free(buf);
 369                 return 1;
 370         }
 371
 372         ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOB, buf, sb.st_size);
 373         free(buf);
 374         close(fd);
 375         return ret;
 376 }
 377
 378 int fio_clients_send_ini(const char *filename)
 379 {
 380         struct fio_client *client;
 381         struct flist_head *entry, *tmp;
 382
 383         flist_for_each_safe(entry, tmp, &client_list) {
 384                 client = flist_entry(entry, struct fio_client, list);
 385
 386                 if (fio_client_send_ini(client, filename))
 387                         remove_client(client);
 388         }
 389
 390         return !nr_clients;
 391 }
 392
 393 static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
 394 {
 395         dst->max_val    = le64_to_cpu(src->max_val);
 396         dst->min_val    = le64_to_cpu(src->min_val);
 397         dst->samples    = le64_to_cpu(src->samples);
 398
 399         /*
 400          * Floats arrive as IEEE 754 encoded uint64_t, convert back to double
 401          */
 402         dst->mean.u.f   = fio_uint64_to_double(le64_to_cpu(dst->mean.u.i));
 403         dst->S.u.f      = fio_uint64_to_double(le64_to_cpu(dst->S.u.i));
 404 }
 405
 406 static void convert_ts(struct thread_stat *dst, struct thread_stat *src)
 407 {
 408         int i, j;
 409
 410         dst->error      = le32_to_cpu(src->error);
 411         dst->groupid    = le32_to_cpu(src->groupid);
 412         dst->pid        = le32_to_cpu(src->pid);
 413         dst->members    = le32_to_cpu(src->members);
 414
 415         for (i = 0; i < 2; i++) {
 416                 convert_io_stat(&dst->clat_stat[i], &src->clat_stat[i]);
 417                 convert_io_stat(&dst->slat_stat[i], &src->slat_stat[i]);
 418                 convert_io_stat(&dst->lat_stat[i], &src->lat_stat[i]);
 419                 convert_io_stat(&dst->bw_stat[i], &src->bw_stat[i]);
 420         }
 421
 422         dst->usr_time           = le64_to_cpu(src->usr_time);
 423         dst->sys_time           = le64_to_cpu(src->sys_time);
 424         dst->ctx                = le64_to_cpu(src->ctx);
 425         dst->minf               = le64_to_cpu(src->minf);
 426         dst->majf               = le64_to_cpu(src->majf);
 427         dst->clat_percentiles   = le64_to_cpu(src->clat_percentiles);
 428
 429         for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
 430                 fio_fp64_t *fps = &src->percentile_list[i];
 431                 fio_fp64_t *fpd = &dst->percentile_list[i];
 432
 433                 fpd->u.f = fio_uint64_to_double(le64_to_cpu(fps->u.i));
 434         }
 435
 436         for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
 437                 dst->io_u_map[i]        = le32_to_cpu(src->io_u_map[i]);
 438                 dst->io_u_submit[i]     = le32_to_cpu(src->io_u_submit[i]);
 439                 dst->io_u_complete[i]   = le32_to_cpu(src->io_u_complete[i]);
 440         }
 441
 442         for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
 443                 dst->io_u_lat_u[i]      = le32_to_cpu(src->io_u_lat_u[i]);
 444                 dst->io_u_lat_m[i]      = le32_to_cpu(src->io_u_lat_m[i]);
 445         }
 446
 447         for (i = 0; i < 2; i++)
 448                 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
 449                         dst->io_u_plat[i][j] = le32_to_cpu(src->io_u_plat[i][j]);
 450
 451         for (i = 0; i < 3; i++) {
 452                 dst->total_io_u[i]      = le64_to_cpu(src->total_io_u[i]);
 453                 dst->short_io_u[i]      = le64_to_cpu(src->short_io_u[i]);
 454         }
 455
 456         dst->total_submit       = le64_to_cpu(src->total_submit);
 457         dst->total_complete     = le64_to_cpu(src->total_complete);
 458
 459         for (i = 0; i < 2; i++) {
 460                 dst->io_bytes[i]        = le64_to_cpu(src->io_bytes[i]);
 461                 dst->runtime[i]         = le64_to_cpu(src->runtime[i]);
 462         }
 463
 464         dst->total_run_time     = le64_to_cpu(src->total_run_time);
 465         dst->continue_on_error  = le16_to_cpu(src->continue_on_error);
 466         dst->total_err_count    = le64_to_cpu(src->total_err_count);
 467         dst->first_error        = le32_to_cpu(src->first_error);
 468         dst->kb_base            = le32_to_cpu(src->kb_base);
 469 }
 470
 471 static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
 472 {
 473         int i;
 474
 475         for (i = 0; i < 2; i++) {
 476                 dst->max_run[i]         = le64_to_cpu(src->max_run[i]);
 477                 dst->min_run[i]         = le64_to_cpu(src->min_run[i]);
 478                 dst->max_bw[i]          = le64_to_cpu(src->max_bw[i]);
 479                 dst->min_bw[i]          = le64_to_cpu(src->min_bw[i]);
 480                 dst->io_kb[i]           = le64_to_cpu(src->io_kb[i]);
 481                 dst->agg[i]             = le64_to_cpu(src->agg[i]);
 482         }
 483
 484         dst->kb_base    = le32_to_cpu(src->kb_base);
 485         dst->groupid    = le32_to_cpu(src->groupid);
 486 }
 487
 488 static void handle_ts(struct fio_net_cmd *cmd)
 489 {
 490         struct cmd_ts_pdu *p = (struct cmd_ts_pdu *) cmd->payload;
 491
 492         convert_ts(&p->ts, &p->ts);
 493         convert_gs(&p->rs, &p->rs);
 494
 495         show_thread_status(&p->ts, &p->rs);
 496 }
 497
 498 static void handle_gs(struct fio_net_cmd *cmd)
 499 {
 500         struct group_run_stats *gs = (struct group_run_stats *) cmd->payload;
 501
 502         convert_gs(gs, gs);
 503         show_group_stats(gs);
 504 }
 505
 506 static void handle_eta(struct fio_net_cmd *cmd)
 507 {
 508         struct jobs_eta *je = (struct jobs_eta *) cmd->payload;
 509         int i;
 510
 511         je->nr_running          = le32_to_cpu(je->nr_running);
 512         je->nr_ramp             = le32_to_cpu(je->nr_ramp);
 513         je->nr_pending          = le32_to_cpu(je->nr_pending);
 514         je->files_open          = le32_to_cpu(je->files_open);
 515         je->m_rate              = le32_to_cpu(je->m_rate);
 516         je->t_rate              = le32_to_cpu(je->t_rate);
 517         je->m_iops              = le32_to_cpu(je->m_iops);
 518         je->t_iops              = le32_to_cpu(je->t_iops);
 519
 520         for (i = 0; i < 2; i++) {
 521                 je->rate[i]     = le32_to_cpu(je->rate[i]);
 522                 je->iops[i]     = le32_to_cpu(je->iops[i]);
 523         }
 524
 525         je->elapsed_sec         = le32_to_cpu(je->nr_running);
 526         je->eta_sec             = le64_to_cpu(je->eta_sec);
 527
 528         display_thread_status(je);
 529 }
 530
 531 static void handle_probe(struct fio_net_cmd *cmd)
 532 {
 533         struct cmd_probe_pdu *probe = (struct cmd_probe_pdu *) cmd->payload;
 534         const char *os, *arch;
 535
 536         os = fio_get_os_string(probe->os);
 537         if (!os)
 538                 os = "unknown";
 539
 540         arch = fio_get_arch_string(probe->arch);
 541         if (!arch)
 542                 os = "unknown";
 543
 544         log_info("hostname=%s, be=%u, os=%s, arch=%s, fio=%u.%u.%u\n",
 545                 probe->hostname, probe->bigendian, os, arch, probe->fio_major,
 546                 probe->fio_minor, probe->fio_patch);
 547 }
 548
 549 static int handle_client(struct fio_client *client)
 550 {
 551         struct fio_net_cmd *cmd;
 552
 553         dprint(FD_NET, "client: handle %s\n", client->hostname);
 554
 555         cmd = fio_net_recv_cmd(client->fd);
 556         if (!cmd)
 557                 return 0;
 558
 559         dprint(FD_NET, "client: got cmd op %d from %s\n",
 560                                         cmd->opcode, client->hostname);
 561
 562         switch (cmd->opcode) {
 563         case FIO_NET_CMD_QUIT:
 564                 remove_client(client);
 565                 free(cmd);
 566                 break;
 567         case FIO_NET_CMD_TEXT: {
 568                 const char *buf = (const char *) cmd->payload;
 569                 int fio_unused ret;
 570
 571                 if (!client->skip_newline)
 572                         fprintf(f_out, "<%s> ", client->hostname);
 573                 ret = fwrite(buf, cmd->pdu_len, 1, f_out);
 574                 fflush(f_out);
 575                 client->skip_newline = strchr(buf, '\n') == NULL;
 576                 free(cmd);
 577                 break;
 578                 }
 579         case FIO_NET_CMD_TS:
 580                 handle_ts(cmd);
 581                 free(cmd);
 582                 break;
 583         case FIO_NET_CMD_GS:
 584                 handle_gs(cmd);
 585                 free(cmd);
 586                 break;
 587         case FIO_NET_CMD_ETA:
 588                 handle_eta(cmd);
 589                 free(cmd);
 590                 break;
 591         case FIO_NET_CMD_PROBE:
 592                 handle_probe(cmd);
 593                 free(cmd);
 594                 break;
 595         case FIO_NET_CMD_START:
 596                 client->state = Client_started;
 597                 free(cmd);
 598                 break;
 599         case FIO_NET_CMD_STOP:
 600                 client->state = Client_stopped;
 601                 free(cmd);
 602                 break;
 603         default:
 604                 log_err("fio: unknown client op: %d\n", cmd->opcode);
 605                 free(cmd);
 606                 break;
 607         }
 608
 609         return 1;
 610 }
 611
 612 int fio_handle_clients(void)
 613 {
 614         struct fio_client *client;
 615         struct flist_head *entry;
 616         struct pollfd *pfds;
 617         int i, ret = 0;
 618
 619         pfds = malloc(nr_clients * sizeof(struct pollfd));
 620
 621         while (!exit_backend && nr_clients) {
 622                 i = 0;
 623                 flist_for_each(entry, &client_list) {
 624                         client = flist_entry(entry, struct fio_client, list);
 625
 626                         pfds[i].fd = client->fd;
 627                         pfds[i].events = POLLIN;
 628                         i++;
 629                 }
 630
 631                 assert(i == nr_clients);
 632
 633                 do {
 634                         ret = poll(pfds, nr_clients, 100);
 635                         if (ret < 0) {
 636                                 if (errno == EINTR)
 637                                         continue;
 638                                 log_err("fio: poll clients: %s\n", strerror(errno));
 639                                 break;
 640                         } else if (!ret)
 641                                 continue;
 642                 } while (ret <= 0);
 643
 644                 for (i = 0; i < nr_clients; i++) {
 645                         if (!(pfds[i].revents & POLLIN))
 646                                 continue;
 647
 648                         client = find_client_by_fd(pfds[i].fd);
 649                         if (!client) {
 650                                 log_err("fio: unknown client fd %d\n", pfds[i].fd);
 651                                 continue;
 652                         }
 653                         if (!handle_client(client)) {
 654                                 log_info("client: host=%s disconnected\n",
 655                                                 client->hostname);
 656                                 remove_client(client);
 657                         }
 658                 }
 659         }
 660
 661         free(pfds);
 662         return 0;
 663 }