1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2018 Intel Corporation.
3 * Copyright(c) 2012-2014 6WIND S.A.
22 #if defined(RTE_ARCH_X86)
25 #include <linux/version.h>
27 #include <rte_common.h>
28 #include <rte_debug.h>
29 #include <rte_memory.h>
30 #include <rte_launch.h>
32 #include <rte_errno.h>
33 #include <rte_lcore.h>
34 #include <rte_service_component.h>
36 #include <rte_string_fns.h>
37 #include <rte_cpuflags.h>
39 #include <rte_version.h>
40 #include <malloc_heap.h>
43 #include <telemetry_internal.h>
44 #include "eal_private.h"
45 #include "eal_thread.h"
46 #include "eal_internal_cfg.h"
47 #include "eal_filesystem.h"
48 #include "eal_hugepages.h"
49 #include "eal_memcfg.h"
50 #include "eal_trace.h"
52 #include "eal_options.h"
54 #include "hotplug_mp.h"
56 #define MEMSIZE_IF_NO_HUGE_PAGE (64ULL * 1024ULL * 1024ULL)
58 #define SOCKET_MEM_STRLEN (RTE_MAX_NUMA_NODES * 10)
60 #define KERNEL_IOMMU_GROUPS_PATH "/sys/kernel/iommu_groups"
62 /* define fd variable here, because file needs to be kept open for the
63 * duration of the program, as we hold a write lock on it in the primary proc */
64 static int mem_cfg_fd = -1;
66 static struct flock wr_lock = {
69 .l_start = offsetof(struct rte_mem_config, memsegs),
70 .l_len = RTE_SIZEOF_FIELD(struct rte_mem_config, memsegs),
73 /* internal configuration (per-core) */
74 struct lcore_config lcore_config[RTE_MAX_LCORE];
76 /* used by rte_rdtsc() */
77 int rte_cycles_vmware_tsc_map;
81 eal_clean_runtime_dir(void)
83 const char *runtime_dir = rte_eal_get_runtime_dir();
85 struct dirent *dirent;
86 int dir_fd, fd, lck_result;
87 static const char * const filters[] = {
93 dir = opendir(runtime_dir);
95 RTE_LOG(ERR, EAL, "Unable to open runtime directory %s\n",
101 /* lock the directory before doing anything, to avoid races */
102 if (flock(dir_fd, LOCK_EX) < 0) {
103 RTE_LOG(ERR, EAL, "Unable to lock runtime directory %s\n",
108 dirent = readdir(dir);
110 RTE_LOG(ERR, EAL, "Unable to read runtime directory %s\n",
115 while (dirent != NULL) {
119 /* skip files that don't match the patterns */
120 for (f_idx = 0; f_idx < RTE_DIM(filters); f_idx++) {
121 const char *filter = filters[f_idx];
123 if (fnmatch(filter, dirent->d_name, 0) == 0) {
129 dirent = readdir(dir);
133 /* try and lock the file */
134 fd = openat(dir_fd, dirent->d_name, O_RDONLY);
136 /* skip to next file */
138 dirent = readdir(dir);
142 /* non-blocking lock */
143 lck_result = flock(fd, LOCK_EX | LOCK_NB);
145 /* if lock succeeds, remove the file */
146 if (lck_result != -1)
147 unlinkat(dir_fd, dirent->d_name, 0);
149 dirent = readdir(dir);
152 /* closedir closes dir_fd and drops the lock */
160 RTE_LOG(ERR, EAL, "Error while clearing runtime dir: %s\n",
167 /* create memory configuration in shared/mmap memory. Take out
168 * a write lock on the memsegs, so we can auto-detect primary/secondary.
169 * This means we never close the file while running (auto-close on exit).
170 * We also don't lock the whole file, so that in future we can use read-locks
171 * on other parts, e.g. memzones, to detect if there are running secondary
174 rte_eal_config_create(void)
176 struct rte_config *config = rte_eal_get_configuration();
177 size_t page_sz = sysconf(_SC_PAGE_SIZE);
178 size_t cfg_len = sizeof(*config->mem_config);
179 size_t cfg_len_aligned = RTE_ALIGN(cfg_len, page_sz);
180 void *rte_mem_cfg_addr, *mapped_mem_cfg_addr;
182 const struct internal_config *internal_conf =
183 eal_get_internal_configuration();
185 const char *pathname = eal_runtime_config_path();
187 if (internal_conf->no_shconf)
190 /* map the config before hugepage address so that we don't waste a page */
191 if (internal_conf->base_virtaddr != 0)
192 rte_mem_cfg_addr = (void *)
193 RTE_ALIGN_FLOOR(internal_conf->base_virtaddr -
194 sizeof(struct rte_mem_config), page_sz);
196 rte_mem_cfg_addr = NULL;
199 mem_cfg_fd = open(pathname, O_RDWR | O_CREAT, 0600);
200 if (mem_cfg_fd < 0) {
201 RTE_LOG(ERR, EAL, "Cannot open '%s' for rte_mem_config\n",
207 retval = ftruncate(mem_cfg_fd, cfg_len);
211 RTE_LOG(ERR, EAL, "Cannot resize '%s' for rte_mem_config\n",
216 retval = fcntl(mem_cfg_fd, F_SETLK, &wr_lock);
220 RTE_LOG(ERR, EAL, "Cannot create lock on '%s'. Is another primary "
221 "process running?\n", pathname);
225 /* reserve space for config */
226 rte_mem_cfg_addr = eal_get_virtual_area(rte_mem_cfg_addr,
227 &cfg_len_aligned, page_sz, 0, 0);
228 if (rte_mem_cfg_addr == NULL) {
229 RTE_LOG(ERR, EAL, "Cannot mmap memory for rte_config\n");
235 /* remap the actual file into the space we've just reserved */
236 mapped_mem_cfg_addr = mmap(rte_mem_cfg_addr,
237 cfg_len_aligned, PROT_READ | PROT_WRITE,
238 MAP_SHARED | MAP_FIXED, mem_cfg_fd, 0);
239 if (mapped_mem_cfg_addr == MAP_FAILED) {
240 munmap(rte_mem_cfg_addr, cfg_len);
243 RTE_LOG(ERR, EAL, "Cannot remap memory for rte_config\n");
247 memcpy(rte_mem_cfg_addr, config->mem_config, sizeof(struct rte_mem_config));
248 config->mem_config = rte_mem_cfg_addr;
250 /* store address of the config in the config itself so that secondary
251 * processes could later map the config into this exact location
253 config->mem_config->mem_cfg_addr = (uintptr_t) rte_mem_cfg_addr;
254 config->mem_config->dma_maskbits = 0;
259 /* attach to an existing shared memory config */
261 rte_eal_config_attach(void)
263 struct rte_config *config = rte_eal_get_configuration();
264 struct rte_mem_config *mem_config;
265 const struct internal_config *internal_conf =
266 eal_get_internal_configuration();
268 const char *pathname = eal_runtime_config_path();
270 if (internal_conf->no_shconf)
274 mem_cfg_fd = open(pathname, O_RDWR);
275 if (mem_cfg_fd < 0) {
276 RTE_LOG(ERR, EAL, "Cannot open '%s' for rte_mem_config\n",
282 /* map it as read-only first */
283 mem_config = (struct rte_mem_config *) mmap(NULL, sizeof(*mem_config),
284 PROT_READ, MAP_SHARED, mem_cfg_fd, 0);
285 if (mem_config == MAP_FAILED) {
288 RTE_LOG(ERR, EAL, "Cannot mmap memory for rte_config! error %i (%s)\n",
289 errno, strerror(errno));
293 config->mem_config = mem_config;
298 /* reattach the shared config at exact memory location primary process has it */
300 rte_eal_config_reattach(void)
302 struct rte_config *config = rte_eal_get_configuration();
303 struct rte_mem_config *mem_config;
304 void *rte_mem_cfg_addr;
305 const struct internal_config *internal_conf =
306 eal_get_internal_configuration();
308 if (internal_conf->no_shconf)
311 /* save the address primary process has mapped shared config to */
313 (void *) (uintptr_t) config->mem_config->mem_cfg_addr;
315 /* unmap original config */
316 munmap(config->mem_config, sizeof(struct rte_mem_config));
318 /* remap the config at proper address */
319 mem_config = (struct rte_mem_config *) mmap(rte_mem_cfg_addr,
320 sizeof(*mem_config), PROT_READ | PROT_WRITE, MAP_SHARED,
326 if (mem_config == MAP_FAILED || mem_config != rte_mem_cfg_addr) {
327 if (mem_config != MAP_FAILED) {
328 /* errno is stale, don't use */
329 RTE_LOG(ERR, EAL, "Cannot mmap memory for rte_config at [%p], got [%p]"
330 " - please use '--" OPT_BASE_VIRTADDR
331 "' option\n", rte_mem_cfg_addr, mem_config);
332 munmap(mem_config, sizeof(struct rte_mem_config));
335 RTE_LOG(ERR, EAL, "Cannot mmap memory for rte_config! error %i (%s)\n",
336 errno, strerror(errno));
340 config->mem_config = mem_config;
345 /* Detect if we are a primary or a secondary process */
347 eal_proc_type_detect(void)
349 enum rte_proc_type_t ptype = RTE_PROC_PRIMARY;
350 const char *pathname = eal_runtime_config_path();
351 const struct internal_config *internal_conf =
352 eal_get_internal_configuration();
354 /* if there no shared config, there can be no secondary processes */
355 if (!internal_conf->no_shconf) {
356 /* if we can open the file but not get a write-lock we are a
357 * secondary process. NOTE: if we get a file handle back, we
358 * keep that open and don't close it to prevent a race condition
359 * between multiple opens.
361 if (((mem_cfg_fd = open(pathname, O_RDWR)) >= 0) &&
362 (fcntl(mem_cfg_fd, F_SETLK, &wr_lock) < 0))
363 ptype = RTE_PROC_SECONDARY;
366 RTE_LOG(INFO, EAL, "Auto-detected process type: %s\n",
367 ptype == RTE_PROC_PRIMARY ? "PRIMARY" : "SECONDARY");
372 /* Sets up rte_config structure with the pointer to shared memory config.*/
374 rte_config_init(void)
376 struct rte_config *config = rte_eal_get_configuration();
377 const struct internal_config *internal_conf =
378 eal_get_internal_configuration();
380 config->process_type = internal_conf->process_type;
382 switch (config->process_type) {
383 case RTE_PROC_PRIMARY:
384 if (rte_eal_config_create() < 0)
386 eal_mcfg_update_from_internal();
388 case RTE_PROC_SECONDARY:
389 if (rte_eal_config_attach() < 0)
391 eal_mcfg_wait_complete();
392 if (eal_mcfg_check_version() < 0) {
393 RTE_LOG(ERR, EAL, "Primary and secondary process DPDK version mismatch\n");
396 if (rte_eal_config_reattach() < 0)
398 if (!__rte_mp_enable()) {
399 RTE_LOG(ERR, EAL, "Primary process refused secondary attachment\n");
402 eal_mcfg_update_internal();
405 case RTE_PROC_INVALID:
406 RTE_LOG(ERR, EAL, "Invalid process type %d\n",
407 config->process_type);
414 /* Unlocks hugepage directories that were locked by eal_hugepage_info_init */
416 eal_hugedirs_unlock(void)
419 struct internal_config *internal_conf =
420 eal_get_internal_configuration();
422 for (i = 0; i < MAX_HUGEPAGE_SIZES; i++)
424 /* skip uninitialized */
425 if (internal_conf->hugepage_info[i].lock_descriptor < 0)
427 /* unlock hugepage file */
428 flock(internal_conf->hugepage_info[i].lock_descriptor, LOCK_UN);
429 close(internal_conf->hugepage_info[i].lock_descriptor);
430 /* reset the field */
431 internal_conf->hugepage_info[i].lock_descriptor = -1;
437 eal_usage(const char *prgname)
439 rte_usage_hook_t hook = eal_get_application_usage_hook();
441 printf("\nUsage: %s ", prgname);
443 printf("EAL Linux options:\n"
444 " --"OPT_SOCKET_MEM" Memory to allocate on sockets (comma separated values)\n"
445 " --"OPT_SOCKET_LIMIT" Limit memory allocation on sockets (comma separated values)\n"
446 " --"OPT_HUGE_DIR" Directory where hugetlbfs is mounted\n"
447 " --"OPT_FILE_PREFIX" Prefix for hugepage filenames\n"
448 " --"OPT_CREATE_UIO_DEV" Create /dev/uioX (usually done by hotplug)\n"
449 " --"OPT_VFIO_INTR" Interrupt mode for VFIO (legacy|msi|msix)\n"
450 " --"OPT_VFIO_VF_TOKEN" VF token (UUID) shared between SR-IOV PF and VFs\n"
451 " --"OPT_LEGACY_MEM" Legacy memory mode (no dynamic allocation, contiguous segments)\n"
452 " --"OPT_SINGLE_FILE_SEGMENTS" Put all hugepage memory in single files\n"
453 " --"OPT_MATCH_ALLOCATIONS" Free hugepages exactly as allocated\n"
455 /* Allow the application to print its usage message too if hook is set */
457 printf("===== Application Usage =====\n\n");
463 eal_parse_socket_arg(char *strval, volatile uint64_t *socket_arg)
465 char * arg[RTE_MAX_NUMA_NODES];
469 len = strnlen(strval, SOCKET_MEM_STRLEN);
470 if (len == SOCKET_MEM_STRLEN) {
471 RTE_LOG(ERR, EAL, "--socket-mem is too long\n");
475 /* all other error cases will be caught later */
476 if (!isdigit(strval[len-1]))
479 /* split the optarg into separate socket values */
480 arg_num = rte_strsplit(strval, len,
481 arg, RTE_MAX_NUMA_NODES, ',');
483 /* if split failed, or 0 arguments */
487 /* parse each defined socket option */
489 for (i = 0; i < arg_num; i++) {
492 val = strtoull(arg[i], &end, 10);
494 /* check for invalid input */
496 (arg[i][0] == '\0') || (end == NULL) || (*end != '\0'))
506 eal_parse_vfio_intr(const char *mode)
508 struct internal_config *internal_conf =
509 eal_get_internal_configuration();
513 enum rte_intr_mode value;
515 { "legacy", RTE_INTR_MODE_LEGACY },
516 { "msi", RTE_INTR_MODE_MSI },
517 { "msix", RTE_INTR_MODE_MSIX },
520 for (i = 0; i < RTE_DIM(map); i++) {
521 if (!strcmp(mode, map[i].name)) {
522 internal_conf->vfio_intr_mode = map[i].value;
530 eal_parse_vfio_vf_token(const char *vf_token)
532 struct internal_config *cfg = eal_get_internal_configuration();
535 if (!rte_uuid_parse(vf_token, uuid)) {
536 rte_uuid_copy(cfg->vfio_vf_token, uuid);
543 /* Parse the arguments for --log-level only */
545 eal_log_level_parse(int argc, char **argv)
550 const int old_optind = optind;
551 const int old_optopt = optopt;
552 char * const old_optarg = optarg;
553 struct internal_config *internal_conf =
554 eal_get_internal_configuration();
559 while ((opt = getopt_long(argc, argvopt, eal_short_options,
560 eal_long_options, &option_index)) != EOF) {
564 /* getopt is not happy, stop right now */
568 ret = (opt == OPT_LOG_LEVEL_NUM) ?
569 eal_parse_common_option(opt, optarg, internal_conf) : 0;
571 /* common parser is not happy */
576 /* restore getopt lib */
582 /* Parse the argument given in the command line of the application */
584 eal_parse_args(int argc, char **argv)
589 char *prgname = argv[0];
590 const int old_optind = optind;
591 const int old_optopt = optopt;
592 char * const old_optarg = optarg;
593 struct internal_config *internal_conf =
594 eal_get_internal_configuration();
599 while ((opt = getopt_long(argc, argvopt, eal_short_options,
600 eal_long_options, &option_index)) != EOF) {
602 /* getopt didn't recognise the option */
609 /* eal_log_level_parse() already handled this option */
610 if (opt == OPT_LOG_LEVEL_NUM)
613 ret = eal_parse_common_option(opt, optarg, internal_conf);
614 /* common parser is not happy */
620 /* common parser handled this option */
629 case OPT_HUGE_DIR_NUM:
631 char *hdir = strdup(optarg);
633 RTE_LOG(ERR, EAL, "Could not store hugepage directory\n");
635 /* free old hugepage dir */
636 free(internal_conf->hugepage_dir);
637 internal_conf->hugepage_dir = hdir;
641 case OPT_FILE_PREFIX_NUM:
643 char *prefix = strdup(optarg);
645 RTE_LOG(ERR, EAL, "Could not store file prefix\n");
647 /* free old prefix */
648 free(internal_conf->hugefile_prefix);
649 internal_conf->hugefile_prefix = prefix;
653 case OPT_SOCKET_MEM_NUM:
654 if (eal_parse_socket_arg(optarg,
655 internal_conf->socket_mem) < 0) {
656 RTE_LOG(ERR, EAL, "invalid parameters for --"
657 OPT_SOCKET_MEM "\n");
662 internal_conf->force_sockets = 1;
665 case OPT_SOCKET_LIMIT_NUM:
666 if (eal_parse_socket_arg(optarg,
667 internal_conf->socket_limit) < 0) {
668 RTE_LOG(ERR, EAL, "invalid parameters for --"
669 OPT_SOCKET_LIMIT "\n");
674 internal_conf->force_socket_limits = 1;
677 case OPT_VFIO_INTR_NUM:
678 if (eal_parse_vfio_intr(optarg) < 0) {
679 RTE_LOG(ERR, EAL, "invalid parameters for --"
687 case OPT_VFIO_VF_TOKEN_NUM:
688 if (eal_parse_vfio_vf_token(optarg) < 0) {
689 RTE_LOG(ERR, EAL, "invalid parameters for --"
690 OPT_VFIO_VF_TOKEN "\n");
697 case OPT_CREATE_UIO_DEV_NUM:
698 internal_conf->create_uio_dev = 1;
701 case OPT_MBUF_POOL_OPS_NAME_NUM:
703 char *ops_name = strdup(optarg);
704 if (ops_name == NULL)
705 RTE_LOG(ERR, EAL, "Could not store mbuf pool ops name\n");
707 /* free old ops name */
708 free(internal_conf->user_mbuf_pool_ops_name);
710 internal_conf->user_mbuf_pool_ops_name =
715 case OPT_MATCH_ALLOCATIONS_NUM:
716 internal_conf->match_allocations = 1;
720 if (opt < OPT_LONG_MIN_NUM && isprint(opt)) {
721 RTE_LOG(ERR, EAL, "Option %c is not supported "
723 } else if (opt >= OPT_LONG_MIN_NUM &&
724 opt < OPT_LONG_MAX_NUM) {
725 RTE_LOG(ERR, EAL, "Option %s is not supported "
727 eal_long_options[option_index].name);
729 RTE_LOG(ERR, EAL, "Option %d is not supported "
738 /* create runtime data directory. In no_shconf mode, skip any errors */
739 if (eal_create_runtime_dir() < 0) {
740 if (internal_conf->no_shconf == 0) {
741 RTE_LOG(ERR, EAL, "Cannot create runtime directory\n");
745 RTE_LOG(WARNING, EAL, "No DPDK runtime directory created\n");
748 if (eal_adjust_config(internal_conf) != 0) {
754 if (eal_check_common_options(internal_conf) != 0) {
761 argv[optind-1] = prgname;
765 /* restore getopt lib */
774 check_socket(const struct rte_memseg_list *msl, void *arg)
776 int *socket_id = arg;
781 return *socket_id == msl->socket_id;
785 eal_check_mem_on_local_socket(void)
788 const struct rte_config *config = rte_eal_get_configuration();
790 socket_id = rte_lcore_to_socket_id(config->main_lcore);
792 if (rte_memseg_list_walk(check_socket, &socket_id) == 0)
793 RTE_LOG(WARNING, EAL, "WARNING: Main core has no memory on local socket!\n");
797 sync_func(__rte_unused void *arg)
803 * Request iopl privilege for all RPL, returns 0 on success
804 * iopl() call is mostly for the i386 architecture. For other architectures,
805 * return -1 to indicate IO privilege can't be changed in this way.
808 rte_eal_iopl_init(void)
810 #if defined(RTE_ARCH_X86)
818 static int rte_eal_vfio_setup(void)
820 if (rte_vfio_enable("vfio"))
827 static void rte_eal_init_alert(const char *msg)
829 fprintf(stderr, "EAL: FATAL: %s\n", msg);
830 RTE_LOG(ERR, EAL, "%s\n", msg);
834 * On Linux 3.6+, even if VFIO is not loaded, whenever IOMMU is enabled in the
835 * BIOS and in the kernel, /sys/kernel/iommu_groups path will contain kernel
836 * IOMMU groups. If IOMMU is not enabled, that path would be empty.
837 * Therefore, checking if the path is empty will tell us if IOMMU is enabled.
840 is_iommu_enabled(void)
842 DIR *dir = opendir(KERNEL_IOMMU_GROUPS_PATH);
846 /* if directory doesn't exist, assume IOMMU is not enabled */
850 while ((d = readdir(dir)) != NULL) {
851 /* skip dot and dot-dot */
860 /* Launch threads, called at application init(). */
862 rte_eal_init(int argc, char **argv)
866 static uint32_t run_once;
867 uint32_t has_run = 0;
869 static char logid[PATH_MAX];
870 char cpuset[RTE_CPU_AFFINITY_STR_LEN];
871 char thread_name[RTE_MAX_THREAD_NAME_LEN];
873 const struct rte_config *config = rte_eal_get_configuration();
874 struct internal_config *internal_conf =
875 eal_get_internal_configuration();
877 /* checks if the machine is adequate */
878 if (!rte_cpu_is_supported()) {
879 rte_eal_init_alert("unsupported cpu type.");
884 if (!__atomic_compare_exchange_n(&run_once, &has_run, 1, 0,
885 __ATOMIC_RELAXED, __ATOMIC_RELAXED)) {
886 rte_eal_init_alert("already called initialization.");
887 rte_errno = EALREADY;
891 p = strrchr(argv[0], '/');
892 strlcpy(logid, p ? p + 1 : argv[0], sizeof(logid));
893 thread_id = pthread_self();
895 eal_reset_internal_config(internal_conf);
897 /* set log level as early as possible */
898 eal_log_level_parse(argc, argv);
900 /* clone argv to report out later in telemetry */
901 eal_save_args(argc, argv);
903 if (rte_eal_cpu_init() < 0) {
904 rte_eal_init_alert("Cannot detect lcores.");
909 fctret = eal_parse_args(argc, argv);
911 rte_eal_init_alert("Invalid 'command line' arguments.");
913 __atomic_store_n(&run_once, 0, __ATOMIC_RELAXED);
917 if (eal_plugins_init() < 0) {
918 rte_eal_init_alert("Cannot init plugins");
920 __atomic_store_n(&run_once, 0, __ATOMIC_RELAXED);
924 if (eal_trace_init() < 0) {
925 rte_eal_init_alert("Cannot init trace");
930 if (eal_option_device_parse()) {
932 __atomic_store_n(&run_once, 0, __ATOMIC_RELAXED);
936 if (rte_config_init() < 0) {
937 rte_eal_init_alert("Cannot init config");
941 if (rte_eal_intr_init() < 0) {
942 rte_eal_init_alert("Cannot init interrupt-handling thread");
946 if (rte_eal_alarm_init() < 0) {
947 rte_eal_init_alert("Cannot init alarm");
948 /* rte_eal_alarm_init sets rte_errno on failure. */
952 /* Put mp channel init before bus scan so that we can init the vdev
953 * bus through mp channel in the secondary process before the bus scan.
955 if (rte_mp_channel_init() < 0 && rte_errno != ENOTSUP) {
956 rte_eal_init_alert("failed to init mp channel");
957 if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
963 /* register multi-process action callbacks for hotplug */
964 if (eal_mp_dev_hotplug_init() < 0) {
965 rte_eal_init_alert("failed to register mp callback for hotplug");
969 if (rte_bus_scan()) {
970 rte_eal_init_alert("Cannot scan the buses for devices");
972 __atomic_store_n(&run_once, 0, __ATOMIC_RELAXED);
976 phys_addrs = rte_eal_using_phys_addrs() != 0;
978 /* if no EAL option "--iova-mode=<pa|va>", use bus IOVA scheme */
979 if (internal_conf->iova_mode == RTE_IOVA_DC) {
980 /* autodetect the IOVA mapping mode */
981 enum rte_iova_mode iova_mode = rte_bus_get_iommu_class();
983 if (iova_mode == RTE_IOVA_DC) {
984 RTE_LOG(DEBUG, EAL, "Buses did not request a specific IOVA mode.\n");
987 /* if we have no access to physical addresses,
988 * pick IOVA as VA mode.
990 iova_mode = RTE_IOVA_VA;
991 RTE_LOG(DEBUG, EAL, "Physical addresses are unavailable, selecting IOVA as VA mode.\n");
992 #if defined(RTE_LIB_KNI) && LINUX_VERSION_CODE >= KERNEL_VERSION(4, 10, 0)
993 } else if (rte_eal_check_module("rte_kni") == 1) {
994 iova_mode = RTE_IOVA_PA;
995 RTE_LOG(DEBUG, EAL, "KNI is loaded, selecting IOVA as PA mode for better KNI performance.\n");
997 } else if (is_iommu_enabled()) {
998 /* we have an IOMMU, pick IOVA as VA mode */
999 iova_mode = RTE_IOVA_VA;
1000 RTE_LOG(DEBUG, EAL, "IOMMU is available, selecting IOVA as VA mode.\n");
1002 /* physical addresses available, and no IOMMU
1003 * found, so pick IOVA as PA.
1005 iova_mode = RTE_IOVA_PA;
1006 RTE_LOG(DEBUG, EAL, "IOMMU is not available, selecting IOVA as PA mode.\n");
1009 #if defined(RTE_LIB_KNI) && LINUX_VERSION_CODE < KERNEL_VERSION(4, 10, 0)
1010 /* Workaround for KNI which requires physical address to work
1013 if (iova_mode == RTE_IOVA_VA &&
1014 rte_eal_check_module("rte_kni") == 1) {
1016 iova_mode = RTE_IOVA_PA;
1017 RTE_LOG(WARNING, EAL, "Forcing IOVA as 'PA' because KNI module is loaded\n");
1019 RTE_LOG(DEBUG, EAL, "KNI can not work since physical addresses are unavailable\n");
1023 rte_eal_get_configuration()->iova_mode = iova_mode;
1025 rte_eal_get_configuration()->iova_mode =
1026 internal_conf->iova_mode;
1029 if (rte_eal_iova_mode() == RTE_IOVA_PA && !phys_addrs) {
1030 rte_eal_init_alert("Cannot use IOVA as 'PA' since physical addresses are not available");
1035 RTE_LOG(INFO, EAL, "Selected IOVA mode '%s'\n",
1036 rte_eal_iova_mode() == RTE_IOVA_PA ? "PA" : "VA");
1038 if (internal_conf->no_hugetlbfs == 0) {
1039 /* rte_config isn't initialized yet */
1040 ret = internal_conf->process_type == RTE_PROC_PRIMARY ?
1041 eal_hugepage_info_init() :
1042 eal_hugepage_info_read();
1044 rte_eal_init_alert("Cannot get hugepage information.");
1046 __atomic_store_n(&run_once, 0, __ATOMIC_RELAXED);
1051 if (internal_conf->memory == 0 && internal_conf->force_sockets == 0) {
1052 if (internal_conf->no_hugetlbfs)
1053 internal_conf->memory = MEMSIZE_IF_NO_HUGE_PAGE;
1056 if (internal_conf->vmware_tsc_map == 1) {
1057 #ifdef RTE_LIBRTE_EAL_VMWARE_TSC_MAP_SUPPORT
1058 rte_cycles_vmware_tsc_map = 1;
1059 RTE_LOG (DEBUG, EAL, "Using VMWARE TSC MAP, "
1060 "you must have monitor_control.pseudo_perfctr = TRUE\n");
1062 RTE_LOG (WARNING, EAL, "Ignoring --vmware-tsc-map because "
1063 "RTE_LIBRTE_EAL_VMWARE_TSC_MAP_SUPPORT is not set\n");
1067 if (eal_log_init(logid, internal_conf->syslog_facility) < 0) {
1068 rte_eal_init_alert("Cannot init logging.");
1070 __atomic_store_n(&run_once, 0, __ATOMIC_RELAXED);
1075 if (rte_eal_vfio_setup() < 0) {
1076 rte_eal_init_alert("Cannot init VFIO");
1078 __atomic_store_n(&run_once, 0, __ATOMIC_RELAXED);
1082 /* in secondary processes, memory init may allocate additional fbarrays
1083 * not present in primary processes, so to avoid any potential issues,
1084 * initialize memzones first.
1086 if (rte_eal_memzone_init() < 0) {
1087 rte_eal_init_alert("Cannot init memzone");
1092 if (rte_eal_memory_init() < 0) {
1093 rte_eal_init_alert("Cannot init memory");
1098 /* the directories are locked during eal_hugepage_info_init */
1099 eal_hugedirs_unlock();
1101 if (rte_eal_malloc_heap_init() < 0) {
1102 rte_eal_init_alert("Cannot init malloc heap");
1107 if (rte_eal_tailqs_init() < 0) {
1108 rte_eal_init_alert("Cannot init tail queues for objects");
1113 if (rte_eal_timer_init() < 0) {
1114 rte_eal_init_alert("Cannot init HPET or TSC timers");
1115 rte_errno = ENOTSUP;
1119 eal_check_mem_on_local_socket();
1121 if (pthread_setaffinity_np(pthread_self(), sizeof(rte_cpuset_t),
1122 &lcore_config[config->main_lcore].cpuset) != 0) {
1123 rte_eal_init_alert("Cannot set affinity");
1127 __rte_thread_init(config->main_lcore,
1128 &lcore_config[config->main_lcore].cpuset);
1130 ret = eal_thread_dump_current_affinity(cpuset, sizeof(cpuset));
1131 RTE_LOG(DEBUG, EAL, "Main lcore %u is ready (tid=%zx;cpuset=[%s%s])\n",
1132 config->main_lcore, (uintptr_t)thread_id, cpuset,
1133 ret == 0 ? "" : "...");
1135 RTE_LCORE_FOREACH_WORKER(i) {
1138 * create communication pipes between main thread
1141 if (pipe(lcore_config[i].pipe_main2worker) < 0)
1142 rte_panic("Cannot create pipe\n");
1143 if (pipe(lcore_config[i].pipe_worker2main) < 0)
1144 rte_panic("Cannot create pipe\n");
1146 lcore_config[i].state = WAIT;
1148 /* create a thread for each lcore */
1149 ret = pthread_create(&lcore_config[i].thread_id, NULL,
1150 eal_thread_loop, NULL);
1152 rte_panic("Cannot create thread\n");
1154 /* Set thread_name for aid in debugging. */
1155 snprintf(thread_name, sizeof(thread_name),
1156 "lcore-worker-%d", i);
1157 ret = rte_thread_setname(lcore_config[i].thread_id,
1161 "Cannot set name for lcore thread\n");
1163 ret = pthread_setaffinity_np(lcore_config[i].thread_id,
1164 sizeof(rte_cpuset_t), &lcore_config[i].cpuset);
1166 rte_panic("Cannot set affinity\n");
1170 * Launch a dummy function on all worker lcores, so that main lcore
1171 * knows they are all ready when this function returns.
1173 rte_eal_mp_remote_launch(sync_func, NULL, SKIP_MAIN);
1174 rte_eal_mp_wait_lcore();
1176 /* initialize services so vdevs register service during bus_probe. */
1177 ret = rte_service_init();
1179 rte_eal_init_alert("rte_service_init() failed");
1184 /* Probe all the buses and devices/drivers on them */
1185 if (rte_bus_probe()) {
1186 rte_eal_init_alert("Cannot probe devices");
1187 rte_errno = ENOTSUP;
1192 /* Register mp action after probe() so that we got enough info */
1193 if (rte_vfio_is_enabled("vfio") && vfio_mp_sync_setup() < 0)
1197 /* initialize default service/lcore mappings and start running. Ignore
1198 * -ENOTSUP, as it indicates no service coremask passed to EAL.
1200 ret = rte_service_start_with_defaults();
1201 if (ret < 0 && ret != -ENOTSUP) {
1207 * Clean up unused files in runtime directory. We do this at the end of
1208 * init and not at the beginning because we want to clean stuff up
1209 * whether we are primary or secondary process, but we cannot remove
1210 * primary process' files because secondary should be able to run even
1211 * if primary process is dead.
1213 * In no_shconf mode, no runtime directory is created in the first
1214 * place, so no cleanup needed.
1216 if (!internal_conf->no_shconf && eal_clean_runtime_dir() < 0) {
1217 rte_eal_init_alert("Cannot clear runtime directory");
1220 if (rte_eal_process_type() == RTE_PROC_PRIMARY && !internal_conf->no_telemetry) {
1221 int tlog = rte_log_register_type_and_pick_level(
1222 "lib.telemetry", RTE_LOG_WARNING);
1224 tlog = RTE_LOGTYPE_EAL;
1225 if (rte_telemetry_init(rte_eal_get_runtime_dir(),
1227 &internal_conf->ctrl_cpuset, rte_log, tlog) != 0)
1231 eal_mcfg_complete();
1237 mark_freeable(const struct rte_memseg_list *msl, const struct rte_memseg *ms,
1238 void *arg __rte_unused)
1240 /* ms is const, so find this memseg */
1241 struct rte_memseg *found;
1246 found = rte_mem_virt2memseg(ms->addr, msl);
1248 found->flags &= ~RTE_MEMSEG_FLAG_DO_NOT_FREE;
1254 rte_eal_cleanup(void)
1256 /* if we're in a primary process, we need to mark hugepages as freeable
1257 * so that finalization can release them back to the system.
1259 struct internal_config *internal_conf =
1260 eal_get_internal_configuration();
1262 if (rte_eal_process_type() == RTE_PROC_PRIMARY &&
1263 internal_conf->hugepage_file.unlink_existing)
1264 rte_memseg_walk(mark_freeable, NULL);
1266 rte_service_finalize();
1268 vfio_mp_sync_cleanup();
1270 rte_mp_channel_cleanup();
1271 /* after this point, any DPDK pointers will become dangling */
1272 rte_eal_memory_detach();
1273 eal_mp_dev_hotplug_cleanup();
1274 rte_eal_malloc_heap_cleanup();
1275 rte_eal_alarm_cleanup();
1278 eal_cleanup_config(internal_conf);
1279 rte_eal_log_cleanup();
1283 int rte_eal_create_uio_dev(void)
1285 const struct internal_config *internal_conf =
1286 eal_get_internal_configuration();
1288 return internal_conf->create_uio_dev;
1292 rte_eal_vfio_intr_mode(void)
1294 const struct internal_config *internal_conf =
1295 eal_get_internal_configuration();
1297 return internal_conf->vfio_intr_mode;
1301 rte_eal_vfio_get_vf_token(rte_uuid_t vf_token)
1303 struct internal_config *cfg = eal_get_internal_configuration();
1305 rte_uuid_copy(vf_token, cfg->vfio_vf_token);
1309 rte_eal_check_module(const char *module_name)
1311 char sysfs_mod_name[PATH_MAX];
1315 if (NULL == module_name)
1318 /* Check if there is sysfs mounted */
1319 if (stat("/sys/module", &st) != 0) {
1320 RTE_LOG(DEBUG, EAL, "sysfs is not mounted! error %i (%s)\n",
1321 errno, strerror(errno));
1325 /* A module might be built-in, therefore try sysfs */
1326 n = snprintf(sysfs_mod_name, PATH_MAX, "/sys/module/%s", module_name);
1327 if (n < 0 || n > PATH_MAX) {
1328 RTE_LOG(DEBUG, EAL, "Could not format module path\n");
1332 if (stat(sysfs_mod_name, &st) != 0) {
1333 RTE_LOG(DEBUG, EAL, "Module %s not found! error %i (%s)\n",
1334 sysfs_mod_name, errno, strerror(errno));
1338 /* Module has been found */