lib/librte_eal/freebsd/eal.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2010-2018 Intel Corporation.
   3  * Copyright(c) 2014 6WIND S.A.
   4  */
   5
   6 #include <stdio.h>
   7 #include <stdlib.h>
   8 #include <stdint.h>
   9 #include <string.h>
  10 #include <stdarg.h>
  11 #include <unistd.h>
  12 #include <pthread.h>
  13 #include <syslog.h>
  14 #include <getopt.h>
  15 #include <sys/file.h>
  16 #include <stddef.h>
  17 #include <errno.h>
  18 #include <limits.h>
  19 #include <sys/mman.h>
  20 #include <sys/queue.h>
  21 #include <sys/stat.h>
  22
  23 #include <rte_compat.h>
  24 #include <rte_common.h>
  25 #include <rte_debug.h>
  26 #include <rte_memory.h>
  27 #include <rte_launch.h>
  28 #include <rte_eal.h>
  29 #include <rte_errno.h>
  30 #include <rte_per_lcore.h>
  31 #include <rte_lcore.h>
  32 #include <rte_service_component.h>
  33 #include <rte_log.h>
  34 #include <rte_random.h>
  35 #include <rte_cycles.h>
  36 #include <rte_string_fns.h>
  37 #include <rte_cpuflags.h>
  38 #include <rte_interrupts.h>
  39 #include <rte_bus.h>
  40 #include <rte_dev.h>
  41 #include <rte_devargs.h>
  42 #include <rte_version.h>
  43 #include <rte_vfio.h>
  44 #include <rte_atomic.h>
  45 #include <malloc_heap.h>
  46 #include <rte_telemetry.h>
  47
  48 #include "eal_private.h"
  49 #include "eal_thread.h"
  50 #include "eal_internal_cfg.h"
  51 #include "eal_filesystem.h"
  52 #include "eal_hugepages.h"
  53 #include "eal_options.h"
  54 #include "eal_memcfg.h"
  55 #include "eal_trace.h"
  56
  57 #define MEMSIZE_IF_NO_HUGE_PAGE (64ULL * 1024ULL * 1024ULL)
  58
  59 /* Allow the application to print its usage message too if set */
  60 static rte_usage_hook_t rte_application_usage_hook = NULL;
  61 /* define fd variable here, because file needs to be kept open for the
  62  * duration of the program, as we hold a write lock on it in the primary proc */
  63 static int mem_cfg_fd = -1;
  64
  65 static struct flock wr_lock = {
  66                 .l_type = F_WRLCK,
  67                 .l_whence = SEEK_SET,
  68                 .l_start = offsetof(struct rte_mem_config, memsegs),
  69                 .l_len = RTE_SIZEOF_FIELD(struct rte_mem_config, memsegs),
  70 };
  71
  72 /* internal configuration (per-core) */
  73 struct lcore_config lcore_config[RTE_MAX_LCORE];
  74
  75 /* used by rte_rdtsc() */
  76 int rte_cycles_vmware_tsc_map;
  77
  78 static const char *default_runtime_dir = "/var/run";
  79
  80 int
  81 eal_create_runtime_dir(void)
  82 {
  83         const char *directory = default_runtime_dir;
  84         const char *xdg_runtime_dir = getenv("XDG_RUNTIME_DIR");
  85         const char *fallback = "/tmp";
  86         char run_dir[PATH_MAX];
  87         char tmp[PATH_MAX];
  88         int ret;
  89
  90         if (getuid() != 0) {
  91                 /* try XDG path first, fall back to /tmp */
  92                 if (xdg_runtime_dir != NULL)
  93                         directory = xdg_runtime_dir;
  94                 else
  95                         directory = fallback;
  96         }
  97         /* create DPDK subdirectory under runtime dir */
  98         ret = snprintf(tmp, sizeof(tmp), "%s/dpdk", directory);
  99         if (ret < 0 || ret == sizeof(tmp)) {
 100                 RTE_LOG(ERR, EAL, "Error creating DPDK runtime path name\n");
 101                 return -1;
 102         }
 103
 104         /* create prefix-specific subdirectory under DPDK runtime dir */
 105         ret = snprintf(run_dir, sizeof(run_dir), "%s/%s",
 106                         tmp, eal_get_hugefile_prefix());
 107         if (ret < 0 || ret == sizeof(run_dir)) {
 108                 RTE_LOG(ERR, EAL, "Error creating prefix-specific runtime path name\n");
 109                 return -1;
 110         }
 111
 112         /* create the path if it doesn't exist. no "mkdir -p" here, so do it
 113          * step by step.
 114          */
 115         ret = mkdir(tmp, 0700);
 116         if (ret < 0 && errno != EEXIST) {
 117                 RTE_LOG(ERR, EAL, "Error creating '%s': %s\n",
 118                         tmp, strerror(errno));
 119                 return -1;
 120         }
 121
 122         ret = mkdir(run_dir, 0700);
 123         if (ret < 0 && errno != EEXIST) {
 124                 RTE_LOG(ERR, EAL, "Error creating '%s': %s\n",
 125                         run_dir, strerror(errno));
 126                 return -1;
 127         }
 128
 129         if (eal_set_runtime_dir(run_dir, sizeof(run_dir)))
 130                 return -1;
 131
 132         return 0;
 133 }
 134
 135 int
 136 eal_clean_runtime_dir(void)
 137 {
 138         /* FreeBSD doesn't need this implemented for now, because, unlike Linux,
 139          * FreeBSD doesn't create per-process files, so no need to clean up.
 140          */
 141         return 0;
 142 }
 143
 144 /* parse a sysfs (or other) file containing one integer value */
 145 int
 146 eal_parse_sysfs_value(const char *filename, unsigned long *val)
 147 {
 148         FILE *f;
 149         char buf[BUFSIZ];
 150         char *end = NULL;
 151
 152         if ((f = fopen(filename, "r")) == NULL) {
 153                 RTE_LOG(ERR, EAL, "%s(): cannot open sysfs value %s\n",
 154                         __func__, filename);
 155                 return -1;
 156         }
 157
 158         if (fgets(buf, sizeof(buf), f) == NULL) {
 159                 RTE_LOG(ERR, EAL, "%s(): cannot read sysfs value %s\n",
 160                         __func__, filename);
 161                 fclose(f);
 162                 return -1;
 163         }
 164         *val = strtoul(buf, &end, 0);
 165         if ((buf[0] == '\0') || (end == NULL) || (*end != '\n')) {
 166                 RTE_LOG(ERR, EAL, "%s(): cannot parse sysfs value %s\n",
 167                                 __func__, filename);
 168                 fclose(f);
 169                 return -1;
 170         }
 171         fclose(f);
 172         return 0;
 173 }
 174
 175
 176 /* create memory configuration in shared/mmap memory. Take out
 177  * a write lock on the memsegs, so we can auto-detect primary/secondary.
 178  * This means we never close the file while running (auto-close on exit).
 179  * We also don't lock the whole file, so that in future we can use read-locks
 180  * on other parts, e.g. memzones, to detect if there are running secondary
 181  * processes. */
 182 static int
 183 rte_eal_config_create(void)
 184 {
 185         struct rte_config *config = rte_eal_get_configuration();
 186         const struct internal_config *internal_conf =
 187                 eal_get_internal_configuration();
 188         size_t page_sz = sysconf(_SC_PAGE_SIZE);
 189         size_t cfg_len = sizeof(struct rte_mem_config);
 190         size_t cfg_len_aligned = RTE_ALIGN(cfg_len, page_sz);
 191         void *rte_mem_cfg_addr, *mapped_mem_cfg_addr;
 192         int retval;
 193
 194         const char *pathname = eal_runtime_config_path();
 195
 196         if (internal_conf->no_shconf)
 197                 return 0;
 198
 199         /* map the config before base address so that we don't waste a page */
 200         if (internal_conf->base_virtaddr != 0)
 201                 rte_mem_cfg_addr = (void *)
 202                         RTE_ALIGN_FLOOR(internal_conf->base_virtaddr -
 203                         sizeof(struct rte_mem_config), page_sz);
 204         else
 205                 rte_mem_cfg_addr = NULL;
 206
 207         if (mem_cfg_fd < 0){
 208                 mem_cfg_fd = open(pathname, O_RDWR | O_CREAT, 0600);
 209                 if (mem_cfg_fd < 0) {
 210                         RTE_LOG(ERR, EAL, "Cannot open '%s' for rte_mem_config\n",
 211                                 pathname);
 212                         return -1;
 213                 }
 214         }
 215
 216         retval = ftruncate(mem_cfg_fd, cfg_len);
 217         if (retval < 0){
 218                 close(mem_cfg_fd);
 219                 mem_cfg_fd = -1;
 220                 RTE_LOG(ERR, EAL, "Cannot resize '%s' for rte_mem_config\n",
 221                         pathname);
 222                 return -1;
 223         }
 224
 225         retval = fcntl(mem_cfg_fd, F_SETLK, &wr_lock);
 226         if (retval < 0){
 227                 close(mem_cfg_fd);
 228                 mem_cfg_fd = -1;
 229                 RTE_LOG(ERR, EAL, "Cannot create lock on '%s'. Is another primary "
 230                         "process running?\n", pathname);
 231                 return -1;
 232         }
 233
 234         /* reserve space for config */
 235         rte_mem_cfg_addr = eal_get_virtual_area(rte_mem_cfg_addr,
 236                         &cfg_len_aligned, page_sz, 0, 0);
 237         if (rte_mem_cfg_addr == NULL) {
 238                 RTE_LOG(ERR, EAL, "Cannot mmap memory for rte_config\n");
 239                 close(mem_cfg_fd);
 240                 mem_cfg_fd = -1;
 241                 return -1;
 242         }
 243
 244         /* remap the actual file into the space we've just reserved */
 245         mapped_mem_cfg_addr = mmap(rte_mem_cfg_addr,
 246                         cfg_len_aligned, PROT_READ | PROT_WRITE,
 247                         MAP_SHARED | MAP_FIXED, mem_cfg_fd, 0);
 248         if (mapped_mem_cfg_addr == MAP_FAILED) {
 249                 RTE_LOG(ERR, EAL, "Cannot remap memory for rte_config\n");
 250                 munmap(rte_mem_cfg_addr, cfg_len);
 251                 close(mem_cfg_fd);
 252                 mem_cfg_fd = -1;
 253                 return -1;
 254         }
 255
 256         memcpy(rte_mem_cfg_addr, config->mem_config, sizeof(struct rte_mem_config));
 257         config->mem_config = rte_mem_cfg_addr;
 258
 259         /* store address of the config in the config itself so that secondary
 260          * processes could later map the config into this exact location
 261          */
 262         config->mem_config->mem_cfg_addr = (uintptr_t) rte_mem_cfg_addr;
 263         return 0;
 264 }
 265
 266 /* attach to an existing shared memory config */
 267 static int
 268 rte_eal_config_attach(void)
 269 {
 270         void *rte_mem_cfg_addr;
 271         const char *pathname = eal_runtime_config_path();
 272         struct rte_config *config = rte_eal_get_configuration();
 273         const struct internal_config *internal_conf =
 274                 eal_get_internal_configuration();
 275
 276
 277         if (internal_conf->no_shconf)
 278                 return 0;
 279
 280         if (mem_cfg_fd < 0){
 281                 mem_cfg_fd = open(pathname, O_RDWR);
 282                 if (mem_cfg_fd < 0) {
 283                         RTE_LOG(ERR, EAL, "Cannot open '%s' for rte_mem_config\n",
 284                                 pathname);
 285                         return -1;
 286                 }
 287         }
 288
 289         rte_mem_cfg_addr = mmap(NULL, sizeof(*config->mem_config),
 290                                 PROT_READ, MAP_SHARED, mem_cfg_fd, 0);
 291         /* don't close the fd here, it will be closed on reattach */
 292         if (rte_mem_cfg_addr == MAP_FAILED) {
 293                 close(mem_cfg_fd);
 294                 mem_cfg_fd = -1;
 295                 RTE_LOG(ERR, EAL, "Cannot mmap memory for rte_config! error %i (%s)\n",
 296                         errno, strerror(errno));
 297                 return -1;
 298         }
 299
 300         config->mem_config = rte_mem_cfg_addr;
 301
 302         return 0;
 303 }
 304
 305 /* reattach the shared config at exact memory location primary process has it */
 306 static int
 307 rte_eal_config_reattach(void)
 308 {
 309         struct rte_mem_config *mem_config;
 310         void *rte_mem_cfg_addr;
 311         struct rte_config *config = rte_eal_get_configuration();
 312         const struct internal_config *internal_conf =
 313                 eal_get_internal_configuration();
 314
 315         if (internal_conf->no_shconf)
 316                 return 0;
 317
 318         /* save the address primary process has mapped shared config to */
 319         rte_mem_cfg_addr =
 320                         (void *)(uintptr_t)config->mem_config->mem_cfg_addr;
 321
 322         /* unmap original config */
 323         munmap(config->mem_config, sizeof(struct rte_mem_config));
 324
 325         /* remap the config at proper address */
 326         mem_config = (struct rte_mem_config *) mmap(rte_mem_cfg_addr,
 327                         sizeof(*mem_config), PROT_READ | PROT_WRITE, MAP_SHARED,
 328                         mem_cfg_fd, 0);
 329         close(mem_cfg_fd);
 330         mem_cfg_fd = -1;
 331
 332         if (mem_config == MAP_FAILED || mem_config != rte_mem_cfg_addr) {
 333                 if (mem_config != MAP_FAILED) {
 334                         /* errno is stale, don't use */
 335                         RTE_LOG(ERR, EAL, "Cannot mmap memory for rte_config at [%p], got [%p]"
 336                                           " - please use '--" OPT_BASE_VIRTADDR
 337                                           "' option\n",
 338                                 rte_mem_cfg_addr, mem_config);
 339                         munmap(mem_config, sizeof(struct rte_mem_config));
 340                         return -1;
 341                 }
 342                 RTE_LOG(ERR, EAL, "Cannot mmap memory for rte_config! error %i (%s)\n",
 343                         errno, strerror(errno));
 344                 return -1;
 345         }
 346
 347         config->mem_config = mem_config;
 348
 349         return 0;
 350 }
 351
 352 /* Detect if we are a primary or a secondary process */
 353 enum rte_proc_type_t
 354 eal_proc_type_detect(void)
 355 {
 356         enum rte_proc_type_t ptype = RTE_PROC_PRIMARY;
 357         const char *pathname = eal_runtime_config_path();
 358         const struct internal_config *internal_conf =
 359                 eal_get_internal_configuration();
 360
 361         /* if there no shared config, there can be no secondary processes */
 362         if (!internal_conf->no_shconf) {
 363                 /* if we can open the file but not get a write-lock we are a
 364                  * secondary process. NOTE: if we get a file handle back, we
 365                  * keep that open and don't close it to prevent a race condition
 366                  * between multiple opens.
 367                  */
 368                 if (((mem_cfg_fd = open(pathname, O_RDWR)) >= 0) &&
 369                                 (fcntl(mem_cfg_fd, F_SETLK, &wr_lock) < 0))
 370                         ptype = RTE_PROC_SECONDARY;
 371         }
 372
 373         RTE_LOG(INFO, EAL, "Auto-detected process type: %s\n",
 374                         ptype == RTE_PROC_PRIMARY ? "PRIMARY" : "SECONDARY");
 375
 376         return ptype;
 377 }
 378
 379 /* Sets up rte_config structure with the pointer to shared memory config.*/
 380 static int
 381 rte_config_init(void)
 382 {
 383         struct rte_config *config = rte_eal_get_configuration();
 384         const struct internal_config *internal_conf =
 385                 eal_get_internal_configuration();
 386
 387         config->process_type = internal_conf->process_type;
 388
 389         switch (config->process_type) {
 390         case RTE_PROC_PRIMARY:
 391                 if (rte_eal_config_create() < 0)
 392                         return -1;
 393                 eal_mcfg_update_from_internal();
 394                 break;
 395         case RTE_PROC_SECONDARY:
 396                 if (rte_eal_config_attach() < 0)
 397                         return -1;
 398                 eal_mcfg_wait_complete();
 399                 if (eal_mcfg_check_version() < 0) {
 400                         RTE_LOG(ERR, EAL, "Primary and secondary process DPDK version mismatch\n");
 401                         return -1;
 402                 }
 403                 if (rte_eal_config_reattach() < 0)
 404                         return -1;
 405                 eal_mcfg_update_internal();
 406                 break;
 407         case RTE_PROC_AUTO:
 408         case RTE_PROC_INVALID:
 409                 RTE_LOG(ERR, EAL, "Invalid process type %d\n",
 410                         config->process_type);
 411                 return -1;
 412         }
 413
 414         return 0;
 415 }
 416
 417 /* display usage */
 418 static void
 419 eal_usage(const char *prgname)
 420 {
 421         printf("\nUsage: %s ", prgname);
 422         eal_common_usage();
 423         /* Allow the application to print its usage message too if hook is set */
 424         if ( rte_application_usage_hook ) {
 425                 printf("===== Application Usage =====\n\n");
 426                 rte_application_usage_hook(prgname);
 427         }
 428 }
 429
 430 /* Set a per-application usage message */
 431 rte_usage_hook_t
 432 rte_set_application_usage_hook( rte_usage_hook_t usage_func )
 433 {
 434         rte_usage_hook_t        old_func;
 435
 436         /* Will be NULL on the first call to denote the last usage routine. */
 437         old_func                                        = rte_application_usage_hook;
 438         rte_application_usage_hook      = usage_func;
 439
 440         return old_func;
 441 }
 442
 443 static inline size_t
 444 eal_get_hugepage_mem_size(void)
 445 {
 446         uint64_t size = 0;
 447         unsigned i, j;
 448         struct internal_config *internal_conf =
 449                 eal_get_internal_configuration();
 450
 451         for (i = 0; i < internal_conf->num_hugepage_sizes; i++) {
 452                 struct hugepage_info *hpi = &internal_conf->hugepage_info[i];
 453                 if (strnlen(hpi->hugedir, sizeof(hpi->hugedir)) != 0) {
 454                         for (j = 0; j < RTE_MAX_NUMA_NODES; j++) {
 455                                 size += hpi->hugepage_sz * hpi->num_pages[j];
 456                         }
 457                 }
 458         }
 459
 460         return (size < SIZE_MAX) ? (size_t)(size) : SIZE_MAX;
 461 }
 462
 463 /* Parse the arguments for --log-level only */
 464 static void
 465 eal_log_level_parse(int argc, char **argv)
 466 {
 467         int opt;
 468         char **argvopt;
 469         int option_index;
 470         const int old_optind = optind;
 471         const int old_optopt = optopt;
 472         const int old_optreset = optreset;
 473         char * const old_optarg = optarg;
 474         struct internal_config *internal_conf =
 475                 eal_get_internal_configuration();
 476
 477         argvopt = argv;
 478         optind = 1;
 479         optreset = 1;
 480
 481         while ((opt = getopt_long(argc, argvopt, eal_short_options,
 482                                   eal_long_options, &option_index)) != EOF) {
 483
 484                 int ret;
 485
 486                 /* getopt is not happy, stop right now */
 487                 if (opt == '?')
 488                         break;
 489
 490                 ret = (opt == OPT_LOG_LEVEL_NUM) ?
 491                     eal_parse_common_option(opt, optarg, internal_conf) : 0;
 492
 493                 /* common parser is not happy */
 494                 if (ret < 0)
 495                         break;
 496         }
 497
 498         /* restore getopt lib */
 499         optind = old_optind;
 500         optopt = old_optopt;
 501         optreset = old_optreset;
 502         optarg = old_optarg;
 503 }
 504
 505 /* Parse the argument given in the command line of the application */
 506 static int
 507 eal_parse_args(int argc, char **argv)
 508 {
 509         int opt, ret;
 510         char **argvopt;
 511         int option_index;
 512         char *prgname = argv[0];
 513         const int old_optind = optind;
 514         const int old_optopt = optopt;
 515         const int old_optreset = optreset;
 516         char * const old_optarg = optarg;
 517         struct internal_config *internal_conf =
 518                 eal_get_internal_configuration();
 519
 520         argvopt = argv;
 521         optind = 1;
 522         optreset = 1;
 523
 524         while ((opt = getopt_long(argc, argvopt, eal_short_options,
 525                                   eal_long_options, &option_index)) != EOF) {
 526
 527                 /* getopt didn't recognise the option */
 528                 if (opt == '?') {
 529                         eal_usage(prgname);
 530                         ret = -1;
 531                         goto out;
 532                 }
 533
 534                 ret = eal_parse_common_option(opt, optarg, internal_conf);
 535                 /* common parser is not happy */
 536                 if (ret < 0) {
 537                         eal_usage(prgname);
 538                         ret = -1;
 539                         goto out;
 540                 }
 541                 /* common parser handled this option */
 542                 if (ret == 0)
 543                         continue;
 544
 545                 switch (opt) {
 546                 case OPT_MBUF_POOL_OPS_NAME_NUM:
 547                 {
 548                         char *ops_name = strdup(optarg);
 549                         if (ops_name == NULL)
 550                                 RTE_LOG(ERR, EAL, "Could not store mbuf pool ops name\n");
 551                         else {
 552                                 /* free old ops name */
 553                                 if (internal_conf->user_mbuf_pool_ops_name !=
 554                                                 NULL)
 555                                         free(internal_conf->user_mbuf_pool_ops_name);
 556
 557                                 internal_conf->user_mbuf_pool_ops_name =
 558                                                 ops_name;
 559                         }
 560                         break;
 561                 }
 562                 case 'h':
 563                         eal_usage(prgname);
 564                         exit(EXIT_SUCCESS);
 565                 default:
 566                         if (opt < OPT_LONG_MIN_NUM && isprint(opt)) {
 567                                 RTE_LOG(ERR, EAL, "Option %c is not supported "
 568                                         "on FreeBSD\n", opt);
 569                         } else if (opt >= OPT_LONG_MIN_NUM &&
 570                                    opt < OPT_LONG_MAX_NUM) {
 571                                 RTE_LOG(ERR, EAL, "Option %s is not supported "
 572                                         "on FreeBSD\n",
 573                                         eal_long_options[option_index].name);
 574                         } else {
 575                                 RTE_LOG(ERR, EAL, "Option %d is not supported "
 576                                         "on FreeBSD\n", opt);
 577                         }
 578                         eal_usage(prgname);
 579                         ret = -1;
 580                         goto out;
 581                 }
 582         }
 583
 584         /* create runtime data directory */
 585         if (internal_conf->no_shconf == 0 &&
 586                         eal_create_runtime_dir() < 0) {
 587                 RTE_LOG(ERR, EAL, "Cannot create runtime directory\n");
 588                 ret = -1;
 589                 goto out;
 590         }
 591
 592         if (eal_adjust_config(internal_conf) != 0) {
 593                 ret = -1;
 594                 goto out;
 595         }
 596
 597         /* sanity checks */
 598         if (eal_check_common_options(internal_conf) != 0) {
 599                 eal_usage(prgname);
 600                 ret = -1;
 601                 goto out;
 602         }
 603
 604         if (optind >= 0)
 605                 argv[optind-1] = prgname;
 606         ret = optind-1;
 607
 608 out:
 609         /* restore getopt lib */
 610         optind = old_optind;
 611         optopt = old_optopt;
 612         optreset = old_optreset;
 613         optarg = old_optarg;
 614
 615         return ret;
 616 }
 617
 618 static int
 619 check_socket(const struct rte_memseg_list *msl, void *arg)
 620 {
 621         int *socket_id = arg;
 622
 623         if (msl->external)
 624                 return 0;
 625
 626         if (msl->socket_id == *socket_id && msl->memseg_arr.count != 0)
 627                 return 1;
 628
 629         return 0;
 630 }
 631
 632 static void
 633 eal_check_mem_on_local_socket(void)
 634 {
 635         int socket_id;
 636         const struct rte_config *config = rte_eal_get_configuration();
 637
 638         socket_id = rte_lcore_to_socket_id(config->master_lcore);
 639
 640         if (rte_memseg_list_walk(check_socket, &socket_id) == 0)
 641                 RTE_LOG(WARNING, EAL, "WARNING: Master core has no memory on local socket!\n");
 642 }
 643
 644
 645 static int
 646 sync_func(__rte_unused void *arg)
 647 {
 648         return 0;
 649 }
 650 /* Abstraction for port I/0 privilege */
 651 int
 652 rte_eal_iopl_init(void)
 653 {
 654         static int fd = -1;
 655
 656         if (fd < 0)
 657                 fd = open("/dev/io", O_RDWR);
 658
 659         if (fd < 0)
 660                 return -1;
 661         /* keep fd open for iopl */
 662         return 0;
 663 }
 664
 665 static void rte_eal_init_alert(const char *msg)
 666 {
 667         fprintf(stderr, "EAL: FATAL: %s\n", msg);
 668         RTE_LOG(ERR, EAL, "%s\n", msg);
 669 }
 670
 671 /* Launch threads, called at application init(). */
 672 int
 673 rte_eal_init(int argc, char **argv)
 674 {
 675         int i, fctret, ret;
 676         pthread_t thread_id;
 677         static rte_atomic32_t run_once = RTE_ATOMIC32_INIT(0);
 678         char cpuset[RTE_CPU_AFFINITY_STR_LEN];
 679         char thread_name[RTE_MAX_THREAD_NAME_LEN];
 680         const struct rte_config *config = rte_eal_get_configuration();
 681         struct internal_config *internal_conf =
 682                 eal_get_internal_configuration();
 683
 684         /* checks if the machine is adequate */
 685         if (!rte_cpu_is_supported()) {
 686                 rte_eal_init_alert("unsupported cpu type.");
 687                 rte_errno = ENOTSUP;
 688                 return -1;
 689         }
 690
 691         if (!rte_atomic32_test_and_set(&run_once)) {
 692                 rte_eal_init_alert("already called initialization.");
 693                 rte_errno = EALREADY;
 694                 return -1;
 695         }
 696
 697         thread_id = pthread_self();
 698
 699         eal_reset_internal_config(internal_conf);
 700
 701         /* clone argv to report out later in telemetry */
 702         eal_save_args(argc, argv);
 703
 704         /* set log level as early as possible */
 705         eal_log_level_parse(argc, argv);
 706
 707         if (rte_eal_cpu_init() < 0) {
 708                 rte_eal_init_alert("Cannot detect lcores.");
 709                 rte_errno = ENOTSUP;
 710                 return -1;
 711         }
 712
 713         fctret = eal_parse_args(argc, argv);
 714         if (fctret < 0) {
 715                 rte_eal_init_alert("Invalid 'command line' arguments.");
 716                 rte_errno = EINVAL;
 717                 rte_atomic32_clear(&run_once);
 718                 return -1;
 719         }
 720
 721         /* FreeBSD always uses legacy memory model */
 722         internal_conf->legacy_mem = true;
 723
 724         if (eal_plugins_init() < 0) {
 725                 rte_eal_init_alert("Cannot init plugins");
 726                 rte_errno = EINVAL;
 727                 rte_atomic32_clear(&run_once);
 728                 return -1;
 729         }
 730
 731         if (eal_trace_init() < 0) {
 732                 rte_eal_init_alert("Cannot init trace");
 733                 rte_errno = EFAULT;
 734                 rte_atomic32_clear(&run_once);
 735                 return -1;
 736         }
 737
 738         if (eal_option_device_parse()) {
 739                 rte_errno = ENODEV;
 740                 rte_atomic32_clear(&run_once);
 741                 return -1;
 742         }
 743
 744         if (rte_config_init() < 0) {
 745                 rte_eal_init_alert("Cannot init config");
 746                 return -1;
 747         }
 748
 749         if (rte_eal_intr_init() < 0) {
 750                 rte_eal_init_alert("Cannot init interrupt-handling thread");
 751                 return -1;
 752         }
 753
 754         if (rte_eal_alarm_init() < 0) {
 755                 rte_eal_init_alert("Cannot init alarm");
 756                 /* rte_eal_alarm_init sets rte_errno on failure. */
 757                 return -1;
 758         }
 759
 760         /* Put mp channel init before bus scan so that we can init the vdev
 761          * bus through mp channel in the secondary process before the bus scan.
 762          */
 763         if (rte_mp_channel_init() < 0 && rte_errno != ENOTSUP) {
 764                 rte_eal_init_alert("failed to init mp channel");
 765                 if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
 766                         rte_errno = EFAULT;
 767                         return -1;
 768                 }
 769         }
 770
 771         if (rte_bus_scan()) {
 772                 rte_eal_init_alert("Cannot scan the buses for devices");
 773                 rte_errno = ENODEV;
 774                 rte_atomic32_clear(&run_once);
 775                 return -1;
 776         }
 777
 778         /* if no EAL option "--iova-mode=<pa|va>", use bus IOVA scheme */
 779         if (internal_conf->iova_mode == RTE_IOVA_DC) {
 780                 /* autodetect the IOVA mapping mode (default is RTE_IOVA_PA) */
 781                 enum rte_iova_mode iova_mode = rte_bus_get_iommu_class();
 782
 783                 if (iova_mode == RTE_IOVA_DC)
 784                         iova_mode = RTE_IOVA_PA;
 785                 rte_eal_get_configuration()->iova_mode = iova_mode;
 786         } else {
 787                 rte_eal_get_configuration()->iova_mode =
 788                         internal_conf->iova_mode;
 789         }
 790
 791         RTE_LOG(INFO, EAL, "Selected IOVA mode '%s'\n",
 792                 rte_eal_iova_mode() == RTE_IOVA_PA ? "PA" : "VA");
 793
 794         if (internal_conf->no_hugetlbfs == 0) {
 795                 /* rte_config isn't initialized yet */
 796                 ret = internal_conf->process_type == RTE_PROC_PRIMARY ?
 797                         eal_hugepage_info_init() :
 798                         eal_hugepage_info_read();
 799                 if (ret < 0) {
 800                         rte_eal_init_alert("Cannot get hugepage information.");
 801                         rte_errno = EACCES;
 802                         rte_atomic32_clear(&run_once);
 803                         return -1;
 804                 }
 805         }
 806
 807         if (internal_conf->memory == 0 && internal_conf->force_sockets == 0) {
 808                 if (internal_conf->no_hugetlbfs)
 809                         internal_conf->memory = MEMSIZE_IF_NO_HUGE_PAGE;
 810                 else
 811                         internal_conf->memory = eal_get_hugepage_mem_size();
 812         }
 813
 814         if (internal_conf->vmware_tsc_map == 1) {
 815 #ifdef RTE_LIBRTE_EAL_VMWARE_TSC_MAP_SUPPORT
 816                 rte_cycles_vmware_tsc_map = 1;
 817                 RTE_LOG (DEBUG, EAL, "Using VMWARE TSC MAP, "
 818                                 "you must have monitor_control.pseudo_perfctr = TRUE\n");
 819 #else
 820                 RTE_LOG (WARNING, EAL, "Ignoring --vmware-tsc-map because "
 821                                 "RTE_LIBRTE_EAL_VMWARE_TSC_MAP_SUPPORT is not set\n");
 822 #endif
 823         }
 824
 825         /* in secondary processes, memory init may allocate additional fbarrays
 826          * not present in primary processes, so to avoid any potential issues,
 827          * initialize memzones first.
 828          */
 829         if (rte_eal_memzone_init() < 0) {
 830                 rte_eal_init_alert("Cannot init memzone");
 831                 rte_errno = ENODEV;
 832                 return -1;
 833         }
 834
 835         if (rte_eal_memory_init() < 0) {
 836                 rte_eal_init_alert("Cannot init memory");
 837                 rte_errno = ENOMEM;
 838                 return -1;
 839         }
 840
 841         if (rte_eal_malloc_heap_init() < 0) {
 842                 rte_eal_init_alert("Cannot init malloc heap");
 843                 rte_errno = ENODEV;
 844                 return -1;
 845         }
 846
 847         if (rte_eal_tailqs_init() < 0) {
 848                 rte_eal_init_alert("Cannot init tail queues for objects");
 849                 rte_errno = EFAULT;
 850                 return -1;
 851         }
 852
 853         if (rte_eal_timer_init() < 0) {
 854                 rte_eal_init_alert("Cannot init HPET or TSC timers");
 855                 rte_errno = ENOTSUP;
 856                 return -1;
 857         }
 858
 859         eal_check_mem_on_local_socket();
 860
 861         eal_thread_init_master(config->master_lcore);
 862
 863         ret = eal_thread_dump_affinity(cpuset, sizeof(cpuset));
 864
 865         RTE_LOG(DEBUG, EAL, "Master lcore %u is ready (tid=%p;cpuset=[%s%s])\n",
 866                 config->master_lcore, thread_id, cpuset,
 867                 ret == 0 ? "" : "...");
 868
 869         RTE_LCORE_FOREACH_SLAVE(i) {
 870
 871                 /*
 872                  * create communication pipes between master thread
 873                  * and children
 874                  */
 875                 if (pipe(lcore_config[i].pipe_master2slave) < 0)
 876                         rte_panic("Cannot create pipe\n");
 877                 if (pipe(lcore_config[i].pipe_slave2master) < 0)
 878                         rte_panic("Cannot create pipe\n");
 879
 880                 lcore_config[i].state = WAIT;
 881
 882                 /* create a thread for each lcore */
 883                 ret = pthread_create(&lcore_config[i].thread_id, NULL,
 884                                      eal_thread_loop, NULL);
 885                 if (ret != 0)
 886                         rte_panic("Cannot create thread\n");
 887
 888                 /* Set thread_name for aid in debugging. */
 889                 snprintf(thread_name, sizeof(thread_name),
 890                                 "lcore-slave-%d", i);
 891                 rte_thread_setname(lcore_config[i].thread_id, thread_name);
 892         }
 893
 894         /*
 895          * Launch a dummy function on all slave lcores, so that master lcore
 896          * knows they are all ready when this function returns.
 897          */
 898         rte_eal_mp_remote_launch(sync_func, NULL, SKIP_MASTER);
 899         rte_eal_mp_wait_lcore();
 900
 901         /* initialize services so vdevs register service during bus_probe. */
 902         ret = rte_service_init();
 903         if (ret) {
 904                 rte_eal_init_alert("rte_service_init() failed");
 905                 rte_errno = ENOEXEC;
 906                 return -1;
 907         }
 908
 909         /* Probe all the buses and devices/drivers on them */
 910         if (rte_bus_probe()) {
 911                 rte_eal_init_alert("Cannot probe devices");
 912                 rte_errno = ENOTSUP;
 913                 return -1;
 914         }
 915
 916         /* initialize default service/lcore mappings and start running. Ignore
 917          * -ENOTSUP, as it indicates no service coremask passed to EAL.
 918          */
 919         ret = rte_service_start_with_defaults();
 920         if (ret < 0 && ret != -ENOTSUP) {
 921                 rte_errno = ENOEXEC;
 922                 return -1;
 923         }
 924
 925         /*
 926          * Clean up unused files in runtime directory. We do this at the end of
 927          * init and not at the beginning because we want to clean stuff up
 928          * whether we are primary or secondary process, but we cannot remove
 929          * primary process' files because secondary should be able to run even
 930          * if primary process is dead.
 931          *
 932          * In no_shconf mode, no runtime directory is created in the first
 933          * place, so no cleanup needed.
 934          */
 935         if (!internal_conf->no_shconf && eal_clean_runtime_dir() < 0) {
 936                 rte_eal_init_alert("Cannot clear runtime directory");
 937                 return -1;
 938         }
 939         if (!internal_conf->no_telemetry) {
 940                 const char *error_str = NULL;
 941                 if (rte_telemetry_init(rte_eal_get_runtime_dir(),
 942                                 &internal_conf->ctrl_cpuset, &error_str)
 943                                 != 0) {
 944                         rte_eal_init_alert(error_str);
 945                         return -1;
 946                 }
 947                 if (error_str != NULL)
 948                         RTE_LOG(NOTICE, EAL, "%s\n", error_str);
 949         }
 950
 951         eal_mcfg_complete();
 952
 953         return fctret;
 954 }
 955
 956 int
 957 rte_eal_cleanup(void)
 958 {
 959         struct internal_config *internal_conf =
 960                 eal_get_internal_configuration();
 961         rte_service_finalize();
 962         rte_mp_channel_cleanup();
 963         rte_trace_save();
 964         eal_trace_fini();
 965         eal_cleanup_config(internal_conf);
 966         return 0;
 967 }
 968
 969 int rte_eal_create_uio_dev(void)
 970 {
 971         const struct internal_config *internal_conf =
 972                 eal_get_internal_configuration();
 973         return internal_conf->create_uio_dev;
 974 }
 975
 976 enum rte_intr_mode
 977 rte_eal_vfio_intr_mode(void)
 978 {
 979         return RTE_INTR_MODE_NONE;
 980 }
 981
 982 int rte_vfio_setup_device(__rte_unused const char *sysfs_base,
 983                       __rte_unused const char *dev_addr,
 984                       __rte_unused int *vfio_dev_fd,
 985                       __rte_unused struct vfio_device_info *device_info)
 986 {
 987         return -1;
 988 }
 989
 990 int rte_vfio_release_device(__rte_unused const char *sysfs_base,
 991                         __rte_unused const char *dev_addr,
 992                         __rte_unused int fd)
 993 {
 994         return -1;
 995 }
 996
 997 int rte_vfio_enable(__rte_unused const char *modname)
 998 {
 999         return -1;
1000 }
1001
1002 int rte_vfio_is_enabled(__rte_unused const char *modname)
1003 {
1004         return 0;
1005 }
1006
1007 int rte_vfio_noiommu_is_enabled(void)
1008 {
1009         return 0;
1010 }
1011
1012 int rte_vfio_clear_group(__rte_unused int vfio_group_fd)
1013 {
1014         return 0;
1015 }
1016
1017 int
1018 rte_vfio_get_group_num(__rte_unused const char *sysfs_base,
1019                        __rte_unused const char *dev_addr,
1020                        __rte_unused int *iommu_group_num)
1021 {
1022         return -1;
1023 }
1024
1025 int
1026 rte_vfio_get_container_fd(void)
1027 {
1028         return -1;
1029 }
1030
1031 int
1032 rte_vfio_get_group_fd(__rte_unused int iommu_group_num)
1033 {
1034         return -1;
1035 }
1036
1037 int
1038 rte_vfio_container_create(void)
1039 {
1040         return -1;
1041 }
1042
1043 int
1044 rte_vfio_container_destroy(__rte_unused int container_fd)
1045 {
1046         return -1;
1047 }
1048
1049 int
1050 rte_vfio_container_group_bind(__rte_unused int container_fd,
1051                 __rte_unused int iommu_group_num)
1052 {
1053         return -1;
1054 }
1055
1056 int
1057 rte_vfio_container_group_unbind(__rte_unused int container_fd,
1058                 __rte_unused int iommu_group_num)
1059 {
1060         return -1;
1061 }
1062
1063 int
1064 rte_vfio_container_dma_map(__rte_unused int container_fd,
1065                         __rte_unused uint64_t vaddr,
1066                         __rte_unused uint64_t iova,
1067                         __rte_unused uint64_t len)
1068 {
1069         return -1;
1070 }
1071
1072 int
1073 rte_vfio_container_dma_unmap(__rte_unused int container_fd,
1074                         __rte_unused uint64_t vaddr,
1075                         __rte_unused uint64_t iova,
1076                         __rte_unused uint64_t len)
1077 {
1078         return -1;
1079 }