1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright(c) 2010-2018 Intel Corporation. 3 * Copyright(c) 2012-2014 6WIND S.A. 4 */ 5 6 #include <ctype.h> 7 #include <stdio.h> 8 #include <stdlib.h> 9 #include <stdint.h> 10 #include <string.h> 11 #include <unistd.h> 12 #include <pthread.h> 13 #include <getopt.h> 14 #include <sys/file.h> 15 #include <dirent.h> 16 #include <fcntl.h> 17 #include <fnmatch.h> 18 #include <stddef.h> 19 #include <errno.h> 20 #include <limits.h> 21 #include <sys/mman.h> 22 #include <sys/stat.h> 23 #if defined(RTE_ARCH_X86) 24 #include <sys/io.h> 25 #endif 26 #include <linux/version.h> 27 28 #include <rte_common.h> 29 #include <rte_debug.h> 30 #include <rte_memory.h> 31 #include <rte_launch.h> 32 #include <rte_eal.h> 33 #include <rte_errno.h> 34 #include <rte_lcore.h> 35 #include <rte_service_component.h> 36 #include <rte_log.h> 37 #include <rte_string_fns.h> 38 #include <rte_cpuflags.h> 39 #include <rte_bus.h> 40 #include <rte_version.h> 41 #include <malloc_heap.h> 42 #include <rte_vfio.h> 43 44 #include <telemetry_internal.h> 45 #include "eal_private.h" 46 #include "eal_thread.h" 47 #include "eal_internal_cfg.h" 48 #include "eal_filesystem.h" 49 #include "eal_hugepages.h" 50 #include "eal_memcfg.h" 51 #include "eal_trace.h" 52 #include "eal_log.h" 53 #include "eal_options.h" 54 #include "eal_vfio.h" 55 #include "hotplug_mp.h" 56 57 #define MEMSIZE_IF_NO_HUGE_PAGE (64ULL * 1024ULL * 1024ULL) 58 59 #define SOCKET_MEM_STRLEN (RTE_MAX_NUMA_NODES * 10) 60 61 #define KERNEL_IOMMU_GROUPS_PATH "/sys/kernel/iommu_groups" 62 63 /* define fd variable here, because file needs to be kept open for the 64 * duration of the program, as we hold a write lock on it in the primary proc */ 65 static int mem_cfg_fd = -1; 66 67 static struct flock wr_lock = { 68 .l_type = F_WRLCK, 69 .l_whence = SEEK_SET, 70 .l_start = offsetof(struct rte_mem_config, memsegs), 71 .l_len = RTE_SIZEOF_FIELD(struct rte_mem_config, memsegs), 72 }; 73 74 /* internal configuration (per-core) */ 75 struct lcore_config lcore_config[RTE_MAX_LCORE]; 76 77 /* used by rte_rdtsc() */ 78 int rte_cycles_vmware_tsc_map; 79 80 81 int 82 eal_clean_runtime_dir(void) 83 { 84 const char *runtime_dir = rte_eal_get_runtime_dir(); 85 DIR *dir; 86 struct dirent *dirent; 87 int dir_fd, fd, lck_result; 88 static const char * const filters[] = { 89 "fbarray_*", 90 "mp_socket_*" 91 }; 92 93 /* open directory */ 94 dir = opendir(runtime_dir); 95 if (!dir) { 96 RTE_LOG(ERR, EAL, "Unable to open runtime directory %s\n", 97 runtime_dir); 98 goto error; 99 } 100 dir_fd = dirfd(dir); 101 102 /* lock the directory before doing anything, to avoid races */ 103 if (flock(dir_fd, LOCK_EX) < 0) { 104 RTE_LOG(ERR, EAL, "Unable to lock runtime directory %s\n", 105 runtime_dir); 106 goto error; 107 } 108 109 dirent = readdir(dir); 110 if (!dirent) { 111 RTE_LOG(ERR, EAL, "Unable to read runtime directory %s\n", 112 runtime_dir); 113 goto error; 114 } 115 116 while (dirent != NULL) { 117 unsigned int f_idx; 118 bool skip = true; 119 120 /* skip files that don't match the patterns */ 121 for (f_idx = 0; f_idx < RTE_DIM(filters); f_idx++) { 122 const char *filter = filters[f_idx]; 123 124 if (fnmatch(filter, dirent->d_name, 0) == 0) { 125 skip = false; 126 break; 127 } 128 } 129 if (skip) { 130 dirent = readdir(dir); 131 continue; 132 } 133 134 /* try and lock the file */ 135 fd = openat(dir_fd, dirent->d_name, O_RDONLY); 136 137 /* skip to next file */ 138 if (fd == -1) { 139 dirent = readdir(dir); 140 continue; 141 } 142 143 /* non-blocking lock */ 144 lck_result = flock(fd, LOCK_EX | LOCK_NB); 145 146 /* if lock succeeds, remove the file */ 147 if (lck_result != -1) 148 unlinkat(dir_fd, dirent->d_name, 0); 149 close(fd); 150 dirent = readdir(dir); 151 } 152 153 /* closedir closes dir_fd and drops the lock */ 154 closedir(dir); 155 return 0; 156 157 error: 158 if (dir) 159 closedir(dir); 160 161 RTE_LOG(ERR, EAL, "Error while clearing runtime dir: %s\n", 162 strerror(errno)); 163 164 return -1; 165 } 166 167 168 /* create memory configuration in shared/mmap memory. Take out 169 * a write lock on the memsegs, so we can auto-detect primary/secondary. 170 * This means we never close the file while running (auto-close on exit). 171 * We also don't lock the whole file, so that in future we can use read-locks 172 * on other parts, e.g. memzones, to detect if there are running secondary 173 * processes. */ 174 static int 175 rte_eal_config_create(void) 176 { 177 struct rte_config *config = rte_eal_get_configuration(); 178 size_t page_sz = sysconf(_SC_PAGE_SIZE); 179 size_t cfg_len = sizeof(*config->mem_config); 180 size_t cfg_len_aligned = RTE_ALIGN(cfg_len, page_sz); 181 void *rte_mem_cfg_addr, *mapped_mem_cfg_addr; 182 int retval; 183 const struct internal_config *internal_conf = 184 eal_get_internal_configuration(); 185 186 const char *pathname = eal_runtime_config_path(); 187 188 if (internal_conf->no_shconf) 189 return 0; 190 191 /* map the config before hugepage address so that we don't waste a page */ 192 if (internal_conf->base_virtaddr != 0) 193 rte_mem_cfg_addr = (void *) 194 RTE_ALIGN_FLOOR(internal_conf->base_virtaddr - 195 sizeof(struct rte_mem_config), page_sz); 196 else 197 rte_mem_cfg_addr = NULL; 198 199 if (mem_cfg_fd < 0){ 200 mem_cfg_fd = open(pathname, O_RDWR | O_CREAT, 0600); 201 if (mem_cfg_fd < 0) { 202 RTE_LOG(ERR, EAL, "Cannot open '%s' for rte_mem_config\n", 203 pathname); 204 return -1; 205 } 206 } 207 208 retval = ftruncate(mem_cfg_fd, cfg_len); 209 if (retval < 0){ 210 close(mem_cfg_fd); 211 mem_cfg_fd = -1; 212 RTE_LOG(ERR, EAL, "Cannot resize '%s' for rte_mem_config\n", 213 pathname); 214 return -1; 215 } 216 217 retval = fcntl(mem_cfg_fd, F_SETLK, &wr_lock); 218 if (retval < 0){ 219 close(mem_cfg_fd); 220 mem_cfg_fd = -1; 221 RTE_LOG(ERR, EAL, "Cannot create lock on '%s'. Is another primary " 222 "process running?\n", pathname); 223 return -1; 224 } 225 226 /* reserve space for config */ 227 rte_mem_cfg_addr = eal_get_virtual_area(rte_mem_cfg_addr, 228 &cfg_len_aligned, page_sz, 0, 0); 229 if (rte_mem_cfg_addr == NULL) { 230 RTE_LOG(ERR, EAL, "Cannot mmap memory for rte_config\n"); 231 close(mem_cfg_fd); 232 mem_cfg_fd = -1; 233 return -1; 234 } 235 236 /* remap the actual file into the space we've just reserved */ 237 mapped_mem_cfg_addr = mmap(rte_mem_cfg_addr, 238 cfg_len_aligned, PROT_READ | PROT_WRITE, 239 MAP_SHARED | MAP_FIXED, mem_cfg_fd, 0); 240 if (mapped_mem_cfg_addr == MAP_FAILED) { 241 munmap(rte_mem_cfg_addr, cfg_len); 242 close(mem_cfg_fd); 243 mem_cfg_fd = -1; 244 RTE_LOG(ERR, EAL, "Cannot remap memory for rte_config\n"); 245 return -1; 246 } 247 248 memcpy(rte_mem_cfg_addr, config->mem_config, sizeof(struct rte_mem_config)); 249 config->mem_config = rte_mem_cfg_addr; 250 251 /* store address of the config in the config itself so that secondary 252 * processes could later map the config into this exact location 253 */ 254 config->mem_config->mem_cfg_addr = (uintptr_t) rte_mem_cfg_addr; 255 config->mem_config->dma_maskbits = 0; 256 257 return 0; 258 } 259 260 /* attach to an existing shared memory config */ 261 static int 262 rte_eal_config_attach(void) 263 { 264 struct rte_config *config = rte_eal_get_configuration(); 265 struct rte_mem_config *mem_config; 266 const struct internal_config *internal_conf = 267 eal_get_internal_configuration(); 268 269 const char *pathname = eal_runtime_config_path(); 270 271 if (internal_conf->no_shconf) 272 return 0; 273 274 if (mem_cfg_fd < 0){ 275 mem_cfg_fd = open(pathname, O_RDWR); 276 if (mem_cfg_fd < 0) { 277 RTE_LOG(ERR, EAL, "Cannot open '%s' for rte_mem_config\n", 278 pathname); 279 return -1; 280 } 281 } 282 283 /* map it as read-only first */ 284 mem_config = (struct rte_mem_config *) mmap(NULL, sizeof(*mem_config), 285 PROT_READ, MAP_SHARED, mem_cfg_fd, 0); 286 if (mem_config == MAP_FAILED) { 287 close(mem_cfg_fd); 288 mem_cfg_fd = -1; 289 RTE_LOG(ERR, EAL, "Cannot mmap memory for rte_config! error %i (%s)\n", 290 errno, strerror(errno)); 291 return -1; 292 } 293 294 config->mem_config = mem_config; 295 296 return 0; 297 } 298 299 /* reattach the shared config at exact memory location primary process has it */ 300 static int 301 rte_eal_config_reattach(void) 302 { 303 struct rte_config *config = rte_eal_get_configuration(); 304 struct rte_mem_config *mem_config; 305 void *rte_mem_cfg_addr; 306 const struct internal_config *internal_conf = 307 eal_get_internal_configuration(); 308 309 if (internal_conf->no_shconf) 310 return 0; 311 312 /* save the address primary process has mapped shared config to */ 313 rte_mem_cfg_addr = 314 (void *) (uintptr_t) config->mem_config->mem_cfg_addr; 315 316 /* unmap original config */ 317 munmap(config->mem_config, sizeof(struct rte_mem_config)); 318 319 /* remap the config at proper address */ 320 mem_config = (struct rte_mem_config *) mmap(rte_mem_cfg_addr, 321 sizeof(*mem_config), PROT_READ | PROT_WRITE, MAP_SHARED, 322 mem_cfg_fd, 0); 323 324 close(mem_cfg_fd); 325 mem_cfg_fd = -1; 326 327 if (mem_config == MAP_FAILED || mem_config != rte_mem_cfg_addr) { 328 if (mem_config != MAP_FAILED) { 329 /* errno is stale, don't use */ 330 RTE_LOG(ERR, EAL, "Cannot mmap memory for rte_config at [%p], got [%p]" 331 " - please use '--" OPT_BASE_VIRTADDR 332 "' option\n", rte_mem_cfg_addr, mem_config); 333 munmap(mem_config, sizeof(struct rte_mem_config)); 334 return -1; 335 } 336 RTE_LOG(ERR, EAL, "Cannot mmap memory for rte_config! error %i (%s)\n", 337 errno, strerror(errno)); 338 return -1; 339 } 340 341 config->mem_config = mem_config; 342 343 return 0; 344 } 345 346 /* Detect if we are a primary or a secondary process */ 347 enum rte_proc_type_t 348 eal_proc_type_detect(void) 349 { 350 enum rte_proc_type_t ptype = RTE_PROC_PRIMARY; 351 const char *pathname = eal_runtime_config_path(); 352 const struct internal_config *internal_conf = 353 eal_get_internal_configuration(); 354 355 /* if there no shared config, there can be no secondary processes */ 356 if (!internal_conf->no_shconf) { 357 /* if we can open the file but not get a write-lock we are a 358 * secondary process. NOTE: if we get a file handle back, we 359 * keep that open and don't close it to prevent a race condition 360 * between multiple opens. 361 */ 362 if (((mem_cfg_fd = open(pathname, O_RDWR)) >= 0) && 363 (fcntl(mem_cfg_fd, F_SETLK, &wr_lock) < 0)) 364 ptype = RTE_PROC_SECONDARY; 365 } 366 367 RTE_LOG(INFO, EAL, "Auto-detected process type: %s\n", 368 ptype == RTE_PROC_PRIMARY ? "PRIMARY" : "SECONDARY"); 369 370 return ptype; 371 } 372 373 /* Sets up rte_config structure with the pointer to shared memory config.*/ 374 static int 375 rte_config_init(void) 376 { 377 struct rte_config *config = rte_eal_get_configuration(); 378 const struct internal_config *internal_conf = 379 eal_get_internal_configuration(); 380 381 config->process_type = internal_conf->process_type; 382 383 switch (config->process_type) { 384 case RTE_PROC_PRIMARY: 385 if (rte_eal_config_create() < 0) 386 return -1; 387 eal_mcfg_update_from_internal(); 388 break; 389 case RTE_PROC_SECONDARY: 390 if (rte_eal_config_attach() < 0) 391 return -1; 392 eal_mcfg_wait_complete(); 393 if (eal_mcfg_check_version() < 0) { 394 RTE_LOG(ERR, EAL, "Primary and secondary process DPDK version mismatch\n"); 395 return -1; 396 } 397 if (rte_eal_config_reattach() < 0) 398 return -1; 399 if (!__rte_mp_enable()) { 400 RTE_LOG(ERR, EAL, "Primary process refused secondary attachment\n"); 401 return -1; 402 } 403 eal_mcfg_update_internal(); 404 break; 405 case RTE_PROC_AUTO: 406 case RTE_PROC_INVALID: 407 RTE_LOG(ERR, EAL, "Invalid process type %d\n", 408 config->process_type); 409 return -1; 410 } 411 412 return 0; 413 } 414 415 /* Unlocks hugepage directories that were locked by eal_hugepage_info_init */ 416 static void 417 eal_hugedirs_unlock(void) 418 { 419 int i; 420 struct internal_config *internal_conf = 421 eal_get_internal_configuration(); 422 423 for (i = 0; i < MAX_HUGEPAGE_SIZES; i++) 424 { 425 /* skip uninitialized */ 426 if (internal_conf->hugepage_info[i].lock_descriptor < 0) 427 continue; 428 /* unlock hugepage file */ 429 flock(internal_conf->hugepage_info[i].lock_descriptor, LOCK_UN); 430 close(internal_conf->hugepage_info[i].lock_descriptor); 431 /* reset the field */ 432 internal_conf->hugepage_info[i].lock_descriptor = -1; 433 } 434 } 435 436 /* display usage */ 437 static void 438 eal_usage(const char *prgname) 439 { 440 rte_usage_hook_t hook = eal_get_application_usage_hook(); 441 442 printf("\nUsage: %s ", prgname); 443 eal_common_usage(); 444 printf("EAL Linux options:\n" 445 " --"OPT_SOCKET_MEM" Memory to allocate on sockets (comma separated values)\n" 446 " --"OPT_SOCKET_LIMIT" Limit memory allocation on sockets (comma separated values)\n" 447 " --"OPT_HUGE_DIR" Directory where hugetlbfs is mounted\n" 448 " --"OPT_FILE_PREFIX" Prefix for hugepage filenames\n" 449 " --"OPT_CREATE_UIO_DEV" Create /dev/uioX (usually done by hotplug)\n" 450 " --"OPT_VFIO_INTR" Interrupt mode for VFIO (legacy|msi|msix)\n" 451 " --"OPT_VFIO_VF_TOKEN" VF token (UUID) shared between SR-IOV PF and VFs\n" 452 " --"OPT_LEGACY_MEM" Legacy memory mode (no dynamic allocation, contiguous segments)\n" 453 " --"OPT_SINGLE_FILE_SEGMENTS" Put all hugepage memory in single files\n" 454 " --"OPT_MATCH_ALLOCATIONS" Free hugepages exactly as allocated\n" 455 " --"OPT_HUGE_WORKER_STACK"[=size]\n" 456 " Allocate worker thread stacks from hugepage memory.\n" 457 " Size is in units of kbytes and defaults to system\n" 458 " thread stack size if not specified.\n" 459 "\n"); 460 /* Allow the application to print its usage message too if hook is set */ 461 if (hook) { 462 printf("===== Application Usage =====\n\n"); 463 (hook)(prgname); 464 } 465 } 466 467 static int 468 eal_parse_socket_arg(char *strval, volatile uint64_t *socket_arg) 469 { 470 char * arg[RTE_MAX_NUMA_NODES]; 471 char *end; 472 int arg_num, i, len; 473 474 len = strnlen(strval, SOCKET_MEM_STRLEN); 475 if (len == SOCKET_MEM_STRLEN) { 476 RTE_LOG(ERR, EAL, "--socket-mem is too long\n"); 477 return -1; 478 } 479 480 /* all other error cases will be caught later */ 481 if (!isdigit(strval[len-1])) 482 return -1; 483 484 /* split the optarg into separate socket values */ 485 arg_num = rte_strsplit(strval, len, 486 arg, RTE_MAX_NUMA_NODES, ','); 487 488 /* if split failed, or 0 arguments */ 489 if (arg_num <= 0) 490 return -1; 491 492 /* parse each defined socket option */ 493 errno = 0; 494 for (i = 0; i < arg_num; i++) { 495 uint64_t val; 496 end = NULL; 497 val = strtoull(arg[i], &end, 10); 498 499 /* check for invalid input */ 500 if ((errno != 0) || 501 (arg[i][0] == '\0') || (end == NULL) || (*end != '\0')) 502 return -1; 503 val <<= 20; 504 socket_arg[i] = val; 505 } 506 507 return 0; 508 } 509 510 static int 511 eal_parse_vfio_intr(const char *mode) 512 { 513 struct internal_config *internal_conf = 514 eal_get_internal_configuration(); 515 unsigned i; 516 static struct { 517 const char *name; 518 enum rte_intr_mode value; 519 } map[] = { 520 { "legacy", RTE_INTR_MODE_LEGACY }, 521 { "msi", RTE_INTR_MODE_MSI }, 522 { "msix", RTE_INTR_MODE_MSIX }, 523 }; 524 525 for (i = 0; i < RTE_DIM(map); i++) { 526 if (!strcmp(mode, map[i].name)) { 527 internal_conf->vfio_intr_mode = map[i].value; 528 return 0; 529 } 530 } 531 return -1; 532 } 533 534 static int 535 eal_parse_vfio_vf_token(const char *vf_token) 536 { 537 struct internal_config *cfg = eal_get_internal_configuration(); 538 rte_uuid_t uuid; 539 540 if (!rte_uuid_parse(vf_token, uuid)) { 541 rte_uuid_copy(cfg->vfio_vf_token, uuid); 542 return 0; 543 } 544 545 return -1; 546 } 547 548 /* Parse the arguments for --log-level only */ 549 static void 550 eal_log_level_parse(int argc, char **argv) 551 { 552 int opt; 553 char **argvopt; 554 int option_index; 555 const int old_optind = optind; 556 const int old_optopt = optopt; 557 char * const old_optarg = optarg; 558 struct internal_config *internal_conf = 559 eal_get_internal_configuration(); 560 561 argvopt = argv; 562 optind = 1; 563 564 while ((opt = getopt_long(argc, argvopt, eal_short_options, 565 eal_long_options, &option_index)) != EOF) { 566 567 int ret; 568 569 /* getopt is not happy, stop right now */ 570 if (opt == '?') 571 break; 572 573 ret = (opt == OPT_LOG_LEVEL_NUM) ? 574 eal_parse_common_option(opt, optarg, internal_conf) : 0; 575 576 /* common parser is not happy */ 577 if (ret < 0) 578 break; 579 } 580 581 /* restore getopt lib */ 582 optind = old_optind; 583 optopt = old_optopt; 584 optarg = old_optarg; 585 } 586 587 static int 588 eal_parse_huge_worker_stack(const char *arg) 589 { 590 struct internal_config *cfg = eal_get_internal_configuration(); 591 592 if (arg == NULL || arg[0] == '\0') { 593 pthread_attr_t attr; 594 int ret; 595 596 if (pthread_attr_init(&attr) != 0) { 597 RTE_LOG(ERR, EAL, "Could not retrieve default stack size\n"); 598 return -1; 599 } 600 ret = pthread_attr_getstacksize(&attr, &cfg->huge_worker_stack_size); 601 pthread_attr_destroy(&attr); 602 if (ret != 0) { 603 RTE_LOG(ERR, EAL, "Could not retrieve default stack size\n"); 604 return -1; 605 } 606 } else { 607 unsigned long stack_size; 608 char *end; 609 610 errno = 0; 611 stack_size = strtoul(arg, &end, 10); 612 if (errno || end == NULL || stack_size == 0 || 613 stack_size >= (size_t)-1 / 1024) 614 return -1; 615 616 cfg->huge_worker_stack_size = stack_size * 1024; 617 } 618 619 RTE_LOG(DEBUG, EAL, "Each worker thread will use %zu kB of DPDK memory as stack\n", 620 cfg->huge_worker_stack_size / 1024); 621 return 0; 622 } 623 624 /* Parse the argument given in the command line of the application */ 625 static int 626 eal_parse_args(int argc, char **argv) 627 { 628 int opt, ret; 629 char **argvopt; 630 int option_index; 631 char *prgname = argv[0]; 632 const int old_optind = optind; 633 const int old_optopt = optopt; 634 char * const old_optarg = optarg; 635 struct internal_config *internal_conf = 636 eal_get_internal_configuration(); 637 638 argvopt = argv; 639 optind = 1; 640 641 while ((opt = getopt_long(argc, argvopt, eal_short_options, 642 eal_long_options, &option_index)) != EOF) { 643 644 /* getopt didn't recognise the option */ 645 if (opt == '?') { 646 eal_usage(prgname); 647 ret = -1; 648 goto out; 649 } 650 651 /* eal_log_level_parse() already handled this option */ 652 if (opt == OPT_LOG_LEVEL_NUM) 653 continue; 654 655 ret = eal_parse_common_option(opt, optarg, internal_conf); 656 /* common parser is not happy */ 657 if (ret < 0) { 658 eal_usage(prgname); 659 ret = -1; 660 goto out; 661 } 662 /* common parser handled this option */ 663 if (ret == 0) 664 continue; 665 666 switch (opt) { 667 case 'h': 668 eal_usage(prgname); 669 exit(EXIT_SUCCESS); 670 671 case OPT_HUGE_DIR_NUM: 672 { 673 char *hdir = strdup(optarg); 674 if (hdir == NULL) 675 RTE_LOG(ERR, EAL, "Could not store hugepage directory\n"); 676 else { 677 /* free old hugepage dir */ 678 free(internal_conf->hugepage_dir); 679 internal_conf->hugepage_dir = hdir; 680 } 681 break; 682 } 683 case OPT_FILE_PREFIX_NUM: 684 { 685 char *prefix = strdup(optarg); 686 if (prefix == NULL) 687 RTE_LOG(ERR, EAL, "Could not store file prefix\n"); 688 else { 689 /* free old prefix */ 690 free(internal_conf->hugefile_prefix); 691 internal_conf->hugefile_prefix = prefix; 692 } 693 break; 694 } 695 case OPT_SOCKET_MEM_NUM: 696 if (eal_parse_socket_arg(optarg, 697 internal_conf->socket_mem) < 0) { 698 RTE_LOG(ERR, EAL, "invalid parameters for --" 699 OPT_SOCKET_MEM "\n"); 700 eal_usage(prgname); 701 ret = -1; 702 goto out; 703 } 704 internal_conf->force_sockets = 1; 705 break; 706 707 case OPT_SOCKET_LIMIT_NUM: 708 if (eal_parse_socket_arg(optarg, 709 internal_conf->socket_limit) < 0) { 710 RTE_LOG(ERR, EAL, "invalid parameters for --" 711 OPT_SOCKET_LIMIT "\n"); 712 eal_usage(prgname); 713 ret = -1; 714 goto out; 715 } 716 internal_conf->force_socket_limits = 1; 717 break; 718 719 case OPT_VFIO_INTR_NUM: 720 if (eal_parse_vfio_intr(optarg) < 0) { 721 RTE_LOG(ERR, EAL, "invalid parameters for --" 722 OPT_VFIO_INTR "\n"); 723 eal_usage(prgname); 724 ret = -1; 725 goto out; 726 } 727 break; 728 729 case OPT_VFIO_VF_TOKEN_NUM: 730 if (eal_parse_vfio_vf_token(optarg) < 0) { 731 RTE_LOG(ERR, EAL, "invalid parameters for --" 732 OPT_VFIO_VF_TOKEN "\n"); 733 eal_usage(prgname); 734 ret = -1; 735 goto out; 736 } 737 break; 738 739 case OPT_CREATE_UIO_DEV_NUM: 740 internal_conf->create_uio_dev = 1; 741 break; 742 743 case OPT_MBUF_POOL_OPS_NAME_NUM: 744 { 745 char *ops_name = strdup(optarg); 746 if (ops_name == NULL) 747 RTE_LOG(ERR, EAL, "Could not store mbuf pool ops name\n"); 748 else { 749 /* free old ops name */ 750 free(internal_conf->user_mbuf_pool_ops_name); 751 752 internal_conf->user_mbuf_pool_ops_name = 753 ops_name; 754 } 755 break; 756 } 757 case OPT_MATCH_ALLOCATIONS_NUM: 758 internal_conf->match_allocations = 1; 759 break; 760 761 case OPT_HUGE_WORKER_STACK_NUM: 762 if (eal_parse_huge_worker_stack(optarg) < 0) { 763 RTE_LOG(ERR, EAL, "invalid parameter for --" 764 OPT_HUGE_WORKER_STACK"\n"); 765 eal_usage(prgname); 766 ret = -1; 767 goto out; 768 } 769 break; 770 771 default: 772 if (opt < OPT_LONG_MIN_NUM && isprint(opt)) { 773 RTE_LOG(ERR, EAL, "Option %c is not supported " 774 "on Linux\n", opt); 775 } else if (opt >= OPT_LONG_MIN_NUM && 776 opt < OPT_LONG_MAX_NUM) { 777 RTE_LOG(ERR, EAL, "Option %s is not supported " 778 "on Linux\n", 779 eal_long_options[option_index].name); 780 } else { 781 RTE_LOG(ERR, EAL, "Option %d is not supported " 782 "on Linux\n", opt); 783 } 784 eal_usage(prgname); 785 ret = -1; 786 goto out; 787 } 788 } 789 790 /* create runtime data directory. In no_shconf mode, skip any errors */ 791 if (eal_create_runtime_dir() < 0) { 792 if (internal_conf->no_shconf == 0) { 793 RTE_LOG(ERR, EAL, "Cannot create runtime directory\n"); 794 ret = -1; 795 goto out; 796 } else 797 RTE_LOG(WARNING, EAL, "No DPDK runtime directory created\n"); 798 } 799 800 if (eal_adjust_config(internal_conf) != 0) { 801 ret = -1; 802 goto out; 803 } 804 805 /* sanity checks */ 806 if (eal_check_common_options(internal_conf) != 0) { 807 eal_usage(prgname); 808 ret = -1; 809 goto out; 810 } 811 812 if (optind >= 0) 813 argv[optind-1] = prgname; 814 ret = optind-1; 815 816 out: 817 /* restore getopt lib */ 818 optind = old_optind; 819 optopt = old_optopt; 820 optarg = old_optarg; 821 822 return ret; 823 } 824 825 static int 826 check_socket(const struct rte_memseg_list *msl, void *arg) 827 { 828 int *socket_id = arg; 829 830 if (msl->external) 831 return 0; 832 833 return *socket_id == msl->socket_id; 834 } 835 836 static void 837 eal_check_mem_on_local_socket(void) 838 { 839 int socket_id; 840 const struct rte_config *config = rte_eal_get_configuration(); 841 842 socket_id = rte_lcore_to_socket_id(config->main_lcore); 843 844 if (rte_memseg_list_walk(check_socket, &socket_id) == 0) 845 RTE_LOG(WARNING, EAL, "WARNING: Main core has no memory on local socket!\n"); 846 } 847 848 static int 849 sync_func(__rte_unused void *arg) 850 { 851 return 0; 852 } 853 854 /* 855 * Request iopl privilege for all RPL, returns 0 on success 856 * iopl() call is mostly for the i386 architecture. For other architectures, 857 * return -1 to indicate IO privilege can't be changed in this way. 858 */ 859 int 860 rte_eal_iopl_init(void) 861 { 862 #if defined(RTE_ARCH_X86) 863 if (iopl(3) != 0) 864 return -1; 865 #endif 866 return 0; 867 } 868 869 #ifdef VFIO_PRESENT 870 static int rte_eal_vfio_setup(void) 871 { 872 if (rte_vfio_enable("vfio")) 873 return -1; 874 875 return 0; 876 } 877 #endif 878 879 static void rte_eal_init_alert(const char *msg) 880 { 881 fprintf(stderr, "EAL: FATAL: %s\n", msg); 882 RTE_LOG(ERR, EAL, "%s\n", msg); 883 } 884 885 /* 886 * On Linux 3.6+, even if VFIO is not loaded, whenever IOMMU is enabled in the 887 * BIOS and in the kernel, /sys/kernel/iommu_groups path will contain kernel 888 * IOMMU groups. If IOMMU is not enabled, that path would be empty. 889 * Therefore, checking if the path is empty will tell us if IOMMU is enabled. 890 */ 891 static bool 892 is_iommu_enabled(void) 893 { 894 DIR *dir = opendir(KERNEL_IOMMU_GROUPS_PATH); 895 struct dirent *d; 896 int n = 0; 897 898 /* if directory doesn't exist, assume IOMMU is not enabled */ 899 if (dir == NULL) 900 return false; 901 902 while ((d = readdir(dir)) != NULL) { 903 /* skip dot and dot-dot */ 904 if (++n > 2) 905 break; 906 } 907 closedir(dir); 908 909 return n > 2; 910 } 911 912 static int 913 eal_worker_thread_create(unsigned int lcore_id) 914 { 915 pthread_attr_t *attrp = NULL; 916 void *stack_ptr = NULL; 917 pthread_attr_t attr; 918 size_t stack_size; 919 int ret = -1; 920 921 stack_size = eal_get_internal_configuration()->huge_worker_stack_size; 922 if (stack_size != 0) { 923 /* Allocate NUMA aware stack memory and set pthread attributes */ 924 stack_ptr = rte_zmalloc_socket("lcore_stack", stack_size, 925 RTE_CACHE_LINE_SIZE, rte_lcore_to_socket_id(lcore_id)); 926 if (stack_ptr == NULL) { 927 rte_eal_init_alert("Cannot allocate worker lcore stack memory"); 928 rte_errno = ENOMEM; 929 goto out; 930 } 931 932 if (pthread_attr_init(&attr) != 0) { 933 rte_eal_init_alert("Cannot init pthread attributes"); 934 rte_errno = EFAULT; 935 goto out; 936 } 937 attrp = &attr; 938 939 if (pthread_attr_setstack(attrp, stack_ptr, stack_size) != 0) { 940 rte_eal_init_alert("Cannot set pthread stack attributes"); 941 rte_errno = EFAULT; 942 goto out; 943 } 944 } 945 946 if (pthread_create(&lcore_config[lcore_id].thread_id, attrp, 947 eal_thread_loop, (void *)(uintptr_t)lcore_id) == 0) 948 ret = 0; 949 950 out: 951 if (ret != 0) 952 rte_free(stack_ptr); 953 if (attrp != NULL) 954 pthread_attr_destroy(attrp); 955 return ret; 956 } 957 958 /* Launch threads, called at application init(). */ 959 int 960 rte_eal_init(int argc, char **argv) 961 { 962 int i, fctret, ret; 963 static uint32_t run_once; 964 uint32_t has_run = 0; 965 const char *p; 966 static char logid[PATH_MAX]; 967 char cpuset[RTE_CPU_AFFINITY_STR_LEN]; 968 char thread_name[RTE_MAX_THREAD_NAME_LEN]; 969 bool phys_addrs; 970 const struct rte_config *config = rte_eal_get_configuration(); 971 struct internal_config *internal_conf = 972 eal_get_internal_configuration(); 973 974 /* checks if the machine is adequate */ 975 if (!rte_cpu_is_supported()) { 976 rte_eal_init_alert("unsupported cpu type."); 977 rte_errno = ENOTSUP; 978 return -1; 979 } 980 981 if (!__atomic_compare_exchange_n(&run_once, &has_run, 1, 0, 982 __ATOMIC_RELAXED, __ATOMIC_RELAXED)) { 983 rte_eal_init_alert("already called initialization."); 984 rte_errno = EALREADY; 985 return -1; 986 } 987 988 p = strrchr(argv[0], '/'); 989 strlcpy(logid, p ? p + 1 : argv[0], sizeof(logid)); 990 991 eal_reset_internal_config(internal_conf); 992 993 /* set log level as early as possible */ 994 eal_log_level_parse(argc, argv); 995 996 /* clone argv to report out later in telemetry */ 997 eal_save_args(argc, argv); 998 999 if (rte_eal_cpu_init() < 0) { 1000 rte_eal_init_alert("Cannot detect lcores."); 1001 rte_errno = ENOTSUP; 1002 return -1; 1003 } 1004 1005 fctret = eal_parse_args(argc, argv); 1006 if (fctret < 0) { 1007 rte_eal_init_alert("Invalid 'command line' arguments."); 1008 rte_errno = EINVAL; 1009 __atomic_store_n(&run_once, 0, __ATOMIC_RELAXED); 1010 return -1; 1011 } 1012 1013 if (eal_plugins_init() < 0) { 1014 rte_eal_init_alert("Cannot init plugins"); 1015 rte_errno = EINVAL; 1016 __atomic_store_n(&run_once, 0, __ATOMIC_RELAXED); 1017 return -1; 1018 } 1019 1020 if (eal_trace_init() < 0) { 1021 rte_eal_init_alert("Cannot init trace"); 1022 rte_errno = EFAULT; 1023 return -1; 1024 } 1025 1026 if (eal_option_device_parse()) { 1027 rte_errno = ENODEV; 1028 __atomic_store_n(&run_once, 0, __ATOMIC_RELAXED); 1029 return -1; 1030 } 1031 1032 if (rte_config_init() < 0) { 1033 rte_eal_init_alert("Cannot init config"); 1034 return -1; 1035 } 1036 1037 if (rte_eal_intr_init() < 0) { 1038 rte_eal_init_alert("Cannot init interrupt-handling thread"); 1039 return -1; 1040 } 1041 1042 if (rte_eal_alarm_init() < 0) { 1043 rte_eal_init_alert("Cannot init alarm"); 1044 /* rte_eal_alarm_init sets rte_errno on failure. */ 1045 return -1; 1046 } 1047 1048 /* Put mp channel init before bus scan so that we can init the vdev 1049 * bus through mp channel in the secondary process before the bus scan. 1050 */ 1051 if (rte_mp_channel_init() < 0 && rte_errno != ENOTSUP) { 1052 rte_eal_init_alert("failed to init mp channel"); 1053 if (rte_eal_process_type() == RTE_PROC_PRIMARY) { 1054 rte_errno = EFAULT; 1055 return -1; 1056 } 1057 } 1058 1059 /* register multi-process action callbacks for hotplug */ 1060 if (eal_mp_dev_hotplug_init() < 0) { 1061 rte_eal_init_alert("failed to register mp callback for hotplug"); 1062 return -1; 1063 } 1064 1065 if (rte_bus_scan()) { 1066 rte_eal_init_alert("Cannot scan the buses for devices"); 1067 rte_errno = ENODEV; 1068 __atomic_store_n(&run_once, 0, __ATOMIC_RELAXED); 1069 return -1; 1070 } 1071 1072 phys_addrs = rte_eal_using_phys_addrs() != 0; 1073 1074 /* if no EAL option "--iova-mode=<pa|va>", use bus IOVA scheme */ 1075 if (internal_conf->iova_mode == RTE_IOVA_DC) { 1076 /* autodetect the IOVA mapping mode */ 1077 enum rte_iova_mode iova_mode = rte_bus_get_iommu_class(); 1078 1079 if (iova_mode == RTE_IOVA_DC) { 1080 RTE_LOG(DEBUG, EAL, "Buses did not request a specific IOVA mode.\n"); 1081 1082 if (!phys_addrs) { 1083 /* if we have no access to physical addresses, 1084 * pick IOVA as VA mode. 1085 */ 1086 iova_mode = RTE_IOVA_VA; 1087 RTE_LOG(DEBUG, EAL, "Physical addresses are unavailable, selecting IOVA as VA mode.\n"); 1088 #if defined(RTE_LIB_KNI) && LINUX_VERSION_CODE >= KERNEL_VERSION(4, 10, 0) 1089 } else if (rte_eal_check_module("rte_kni") == 1) { 1090 iova_mode = RTE_IOVA_PA; 1091 RTE_LOG(DEBUG, EAL, "KNI is loaded, selecting IOVA as PA mode for better KNI performance.\n"); 1092 #endif 1093 } else if (is_iommu_enabled()) { 1094 /* we have an IOMMU, pick IOVA as VA mode */ 1095 iova_mode = RTE_IOVA_VA; 1096 RTE_LOG(DEBUG, EAL, "IOMMU is available, selecting IOVA as VA mode.\n"); 1097 } else { 1098 /* physical addresses available, and no IOMMU 1099 * found, so pick IOVA as PA. 1100 */ 1101 iova_mode = RTE_IOVA_PA; 1102 RTE_LOG(DEBUG, EAL, "IOMMU is not available, selecting IOVA as PA mode.\n"); 1103 } 1104 } 1105 #if defined(RTE_LIB_KNI) && LINUX_VERSION_CODE < KERNEL_VERSION(4, 10, 0) 1106 /* Workaround for KNI which requires physical address to work 1107 * in kernels < 4.10 1108 */ 1109 if (iova_mode == RTE_IOVA_VA && 1110 rte_eal_check_module("rte_kni") == 1) { 1111 if (phys_addrs) { 1112 iova_mode = RTE_IOVA_PA; 1113 RTE_LOG(WARNING, EAL, "Forcing IOVA as 'PA' because KNI module is loaded\n"); 1114 } else { 1115 RTE_LOG(DEBUG, EAL, "KNI can not work since physical addresses are unavailable\n"); 1116 } 1117 } 1118 #endif 1119 rte_eal_get_configuration()->iova_mode = iova_mode; 1120 } else { 1121 rte_eal_get_configuration()->iova_mode = 1122 internal_conf->iova_mode; 1123 } 1124 1125 if (rte_eal_iova_mode() == RTE_IOVA_PA && !phys_addrs) { 1126 rte_eal_init_alert("Cannot use IOVA as 'PA' since physical addresses are not available"); 1127 rte_errno = EINVAL; 1128 return -1; 1129 } 1130 1131 RTE_LOG(INFO, EAL, "Selected IOVA mode '%s'\n", 1132 rte_eal_iova_mode() == RTE_IOVA_PA ? "PA" : "VA"); 1133 1134 if (internal_conf->no_hugetlbfs == 0) { 1135 /* rte_config isn't initialized yet */ 1136 ret = internal_conf->process_type == RTE_PROC_PRIMARY ? 1137 eal_hugepage_info_init() : 1138 eal_hugepage_info_read(); 1139 if (ret < 0) { 1140 rte_eal_init_alert("Cannot get hugepage information."); 1141 rte_errno = EACCES; 1142 __atomic_store_n(&run_once, 0, __ATOMIC_RELAXED); 1143 return -1; 1144 } 1145 } 1146 1147 if (internal_conf->memory == 0 && internal_conf->force_sockets == 0) { 1148 if (internal_conf->no_hugetlbfs) 1149 internal_conf->memory = MEMSIZE_IF_NO_HUGE_PAGE; 1150 } 1151 1152 if (internal_conf->vmware_tsc_map == 1) { 1153 #ifdef RTE_LIBRTE_EAL_VMWARE_TSC_MAP_SUPPORT 1154 rte_cycles_vmware_tsc_map = 1; 1155 RTE_LOG (DEBUG, EAL, "Using VMWARE TSC MAP, " 1156 "you must have monitor_control.pseudo_perfctr = TRUE\n"); 1157 #else 1158 RTE_LOG (WARNING, EAL, "Ignoring --vmware-tsc-map because " 1159 "RTE_LIBRTE_EAL_VMWARE_TSC_MAP_SUPPORT is not set\n"); 1160 #endif 1161 } 1162 1163 if (eal_log_init(logid, internal_conf->syslog_facility) < 0) { 1164 rte_eal_init_alert("Cannot init logging."); 1165 rte_errno = ENOMEM; 1166 __atomic_store_n(&run_once, 0, __ATOMIC_RELAXED); 1167 return -1; 1168 } 1169 1170 #ifdef VFIO_PRESENT 1171 if (rte_eal_vfio_setup() < 0) { 1172 rte_eal_init_alert("Cannot init VFIO"); 1173 rte_errno = EAGAIN; 1174 __atomic_store_n(&run_once, 0, __ATOMIC_RELAXED); 1175 return -1; 1176 } 1177 #endif 1178 /* in secondary processes, memory init may allocate additional fbarrays 1179 * not present in primary processes, so to avoid any potential issues, 1180 * initialize memzones first. 1181 */ 1182 if (rte_eal_memzone_init() < 0) { 1183 rte_eal_init_alert("Cannot init memzone"); 1184 rte_errno = ENODEV; 1185 return -1; 1186 } 1187 1188 if (rte_eal_memory_init() < 0) { 1189 rte_eal_init_alert("Cannot init memory"); 1190 rte_errno = ENOMEM; 1191 return -1; 1192 } 1193 1194 /* the directories are locked during eal_hugepage_info_init */ 1195 eal_hugedirs_unlock(); 1196 1197 if (rte_eal_malloc_heap_init() < 0) { 1198 rte_eal_init_alert("Cannot init malloc heap"); 1199 rte_errno = ENODEV; 1200 return -1; 1201 } 1202 1203 if (rte_eal_tailqs_init() < 0) { 1204 rte_eal_init_alert("Cannot init tail queues for objects"); 1205 rte_errno = EFAULT; 1206 return -1; 1207 } 1208 1209 if (rte_eal_timer_init() < 0) { 1210 rte_eal_init_alert("Cannot init HPET or TSC timers"); 1211 rte_errno = ENOTSUP; 1212 return -1; 1213 } 1214 1215 eal_check_mem_on_local_socket(); 1216 1217 if (pthread_setaffinity_np(pthread_self(), sizeof(rte_cpuset_t), 1218 &lcore_config[config->main_lcore].cpuset) != 0) { 1219 rte_eal_init_alert("Cannot set affinity"); 1220 rte_errno = EINVAL; 1221 return -1; 1222 } 1223 __rte_thread_init(config->main_lcore, 1224 &lcore_config[config->main_lcore].cpuset); 1225 1226 ret = eal_thread_dump_current_affinity(cpuset, sizeof(cpuset)); 1227 RTE_LOG(DEBUG, EAL, "Main lcore %u is ready (tid=%zx;cpuset=[%s%s])\n", 1228 config->main_lcore, (uintptr_t)pthread_self(), cpuset, 1229 ret == 0 ? "" : "..."); 1230 1231 RTE_LCORE_FOREACH_WORKER(i) { 1232 1233 /* 1234 * create communication pipes between main thread 1235 * and children 1236 */ 1237 if (pipe(lcore_config[i].pipe_main2worker) < 0) 1238 rte_panic("Cannot create pipe\n"); 1239 if (pipe(lcore_config[i].pipe_worker2main) < 0) 1240 rte_panic("Cannot create pipe\n"); 1241 1242 lcore_config[i].state = WAIT; 1243 1244 /* create a thread for each lcore */ 1245 ret = eal_worker_thread_create(i); 1246 if (ret != 0) 1247 rte_panic("Cannot create thread\n"); 1248 1249 /* Set thread_name for aid in debugging. */ 1250 snprintf(thread_name, sizeof(thread_name), 1251 "rte-worker-%d", i); 1252 ret = rte_thread_setname(lcore_config[i].thread_id, 1253 thread_name); 1254 if (ret != 0) 1255 RTE_LOG(DEBUG, EAL, 1256 "Cannot set name for lcore thread\n"); 1257 1258 ret = pthread_setaffinity_np(lcore_config[i].thread_id, 1259 sizeof(rte_cpuset_t), &lcore_config[i].cpuset); 1260 if (ret != 0) 1261 rte_panic("Cannot set affinity\n"); 1262 } 1263 1264 /* 1265 * Launch a dummy function on all worker lcores, so that main lcore 1266 * knows they are all ready when this function returns. 1267 */ 1268 rte_eal_mp_remote_launch(sync_func, NULL, SKIP_MAIN); 1269 rte_eal_mp_wait_lcore(); 1270 1271 /* initialize services so vdevs register service during bus_probe. */ 1272 ret = rte_service_init(); 1273 if (ret) { 1274 rte_eal_init_alert("rte_service_init() failed"); 1275 rte_errno = -ret; 1276 return -1; 1277 } 1278 1279 /* Probe all the buses and devices/drivers on them */ 1280 if (rte_bus_probe()) { 1281 rte_eal_init_alert("Cannot probe devices"); 1282 rte_errno = ENOTSUP; 1283 return -1; 1284 } 1285 1286 #ifdef VFIO_PRESENT 1287 /* Register mp action after probe() so that we got enough info */ 1288 if (rte_vfio_is_enabled("vfio") && vfio_mp_sync_setup() < 0) 1289 return -1; 1290 #endif 1291 1292 /* initialize default service/lcore mappings and start running. Ignore 1293 * -ENOTSUP, as it indicates no service coremask passed to EAL. 1294 */ 1295 ret = rte_service_start_with_defaults(); 1296 if (ret < 0 && ret != -ENOTSUP) { 1297 rte_errno = -ret; 1298 return -1; 1299 } 1300 1301 /* 1302 * Clean up unused files in runtime directory. We do this at the end of 1303 * init and not at the beginning because we want to clean stuff up 1304 * whether we are primary or secondary process, but we cannot remove 1305 * primary process' files because secondary should be able to run even 1306 * if primary process is dead. 1307 * 1308 * In no_shconf mode, no runtime directory is created in the first 1309 * place, so no cleanup needed. 1310 */ 1311 if (!internal_conf->no_shconf && eal_clean_runtime_dir() < 0) { 1312 rte_eal_init_alert("Cannot clear runtime directory"); 1313 return -1; 1314 } 1315 if (rte_eal_process_type() == RTE_PROC_PRIMARY && !internal_conf->no_telemetry) { 1316 int tlog = rte_log_register_type_and_pick_level( 1317 "lib.telemetry", RTE_LOG_WARNING); 1318 if (tlog < 0) 1319 tlog = RTE_LOGTYPE_EAL; 1320 if (rte_telemetry_init(rte_eal_get_runtime_dir(), 1321 rte_version(), 1322 &internal_conf->ctrl_cpuset, rte_log, tlog) != 0) 1323 return -1; 1324 } 1325 1326 eal_mcfg_complete(); 1327 1328 return fctret; 1329 } 1330 1331 static int 1332 mark_freeable(const struct rte_memseg_list *msl, const struct rte_memseg *ms, 1333 void *arg __rte_unused) 1334 { 1335 /* ms is const, so find this memseg */ 1336 struct rte_memseg *found; 1337 1338 if (msl->external) 1339 return 0; 1340 1341 found = rte_mem_virt2memseg(ms->addr, msl); 1342 1343 found->flags &= ~RTE_MEMSEG_FLAG_DO_NOT_FREE; 1344 1345 return 0; 1346 } 1347 1348 int 1349 rte_eal_cleanup(void) 1350 { 1351 /* if we're in a primary process, we need to mark hugepages as freeable 1352 * so that finalization can release them back to the system. 1353 */ 1354 struct internal_config *internal_conf = 1355 eal_get_internal_configuration(); 1356 1357 if (rte_eal_process_type() == RTE_PROC_PRIMARY && 1358 internal_conf->hugepage_file.unlink_existing) 1359 rte_memseg_walk(mark_freeable, NULL); 1360 1361 rte_service_finalize(); 1362 #ifdef VFIO_PRESENT 1363 vfio_mp_sync_cleanup(); 1364 #endif 1365 rte_mp_channel_cleanup(); 1366 rte_trace_save(); 1367 eal_trace_fini(); 1368 /* after this point, any DPDK pointers will become dangling */ 1369 rte_eal_memory_detach(); 1370 eal_mp_dev_hotplug_cleanup(); 1371 rte_eal_malloc_heap_cleanup(); 1372 rte_eal_alarm_cleanup(); 1373 eal_cleanup_config(internal_conf); 1374 rte_eal_log_cleanup(); 1375 return 0; 1376 } 1377 1378 int rte_eal_create_uio_dev(void) 1379 { 1380 const struct internal_config *internal_conf = 1381 eal_get_internal_configuration(); 1382 1383 return internal_conf->create_uio_dev; 1384 } 1385 1386 enum rte_intr_mode 1387 rte_eal_vfio_intr_mode(void) 1388 { 1389 const struct internal_config *internal_conf = 1390 eal_get_internal_configuration(); 1391 1392 return internal_conf->vfio_intr_mode; 1393 } 1394 1395 void 1396 rte_eal_vfio_get_vf_token(rte_uuid_t vf_token) 1397 { 1398 struct internal_config *cfg = eal_get_internal_configuration(); 1399 1400 rte_uuid_copy(vf_token, cfg->vfio_vf_token); 1401 } 1402 1403 int 1404 rte_eal_check_module(const char *module_name) 1405 { 1406 char sysfs_mod_name[PATH_MAX]; 1407 struct stat st; 1408 int n; 1409 1410 if (NULL == module_name) 1411 return -1; 1412 1413 /* Check if there is sysfs mounted */ 1414 if (stat("/sys/module", &st) != 0) { 1415 RTE_LOG(DEBUG, EAL, "sysfs is not mounted! error %i (%s)\n", 1416 errno, strerror(errno)); 1417 return -1; 1418 } 1419 1420 /* A module might be built-in, therefore try sysfs */ 1421 n = snprintf(sysfs_mod_name, PATH_MAX, "/sys/module/%s", module_name); 1422 if (n < 0 || n > PATH_MAX) { 1423 RTE_LOG(DEBUG, EAL, "Could not format module path\n"); 1424 return -1; 1425 } 1426 1427 if (stat(sysfs_mod_name, &st) != 0) { 1428 RTE_LOG(DEBUG, EAL, "Module %s not found! error %i (%s)\n", 1429 sysfs_mod_name, errno, strerror(errno)); 1430 return 0; 1431 } 1432 1433 /* Module has been found */ 1434 return 1; 1435 } 1436