4 * Copyright(c) 2010-2018 Intel Corporation. All rights reserved.
5 * Copyright(c) 2012-2014 6WIND S.A.
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9 * modification, are permitted provided that the following conditions
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13 * notice, this list of conditions and the following disclaimer.
14 * * Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
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22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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32 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
50 #include <sys/queue.h>
52 #if defined(RTE_ARCH_X86)
56 #include <rte_compat.h>
57 #include <rte_common.h>
58 #include <rte_debug.h>
59 #include <rte_memory.h>
60 #include <rte_launch.h>
62 #include <rte_eal_memconfig.h>
63 #include <rte_errno.h>
64 #include <rte_per_lcore.h>
65 #include <rte_lcore.h>
66 #include <rte_service_component.h>
68 #include <rte_random.h>
69 #include <rte_cycles.h>
70 #include <rte_string_fns.h>
71 #include <rte_cpuflags.h>
72 #include <rte_interrupts.h>
75 #include <rte_devargs.h>
76 #include <rte_version.h>
77 #include <rte_atomic.h>
78 #include <malloc_heap.h>
81 #include "eal_private.h"
82 #include "eal_thread.h"
83 #include "eal_internal_cfg.h"
84 #include "eal_filesystem.h"
85 #include "eal_hugepages.h"
86 #include "eal_options.h"
89 #define MEMSIZE_IF_NO_HUGE_PAGE (64ULL * 1024ULL * 1024ULL)
91 #define SOCKET_MEM_STRLEN (RTE_MAX_NUMA_NODES * 10)
93 /* Allow the application to print its usage message too if set */
94 static rte_usage_hook_t rte_application_usage_hook = NULL;
96 /* early configuration structure, when memory config is not mmapped */
97 static struct rte_mem_config early_mem_config;
99 /* define fd variable here, because file needs to be kept open for the
100 * duration of the program, as we hold a write lock on it in the primary proc */
101 static int mem_cfg_fd = -1;
103 static struct flock wr_lock = {
105 .l_whence = SEEK_SET,
106 .l_start = offsetof(struct rte_mem_config, memseg),
107 .l_len = sizeof(early_mem_config.memseg),
110 /* Address of global and public configuration */
111 static struct rte_config rte_config = {
112 .mem_config = &early_mem_config,
115 /* internal configuration (per-core) */
116 struct lcore_config lcore_config[RTE_MAX_LCORE];
118 /* internal configuration */
119 struct internal_config internal_config;
121 /* used by rte_rdtsc() */
122 int rte_cycles_vmware_tsc_map;
124 /* Return mbuf pool ops name */
126 rte_eal_mbuf_default_mempool_ops(void)
128 if (internal_config.user_mbuf_pool_ops_name == NULL)
129 return RTE_MBUF_DEFAULT_MEMPOOL_OPS;
131 return internal_config.user_mbuf_pool_ops_name;
134 /* Return a pointer to the configuration structure */
136 rte_eal_get_configuration(void)
142 rte_eal_iova_mode(void)
144 return rte_eal_get_configuration()->iova_mode;
147 /* parse a sysfs (or other) file containing one integer value */
149 eal_parse_sysfs_value(const char *filename, unsigned long *val)
155 if ((f = fopen(filename, "r")) == NULL) {
156 RTE_LOG(ERR, EAL, "%s(): cannot open sysfs value %s\n",
161 if (fgets(buf, sizeof(buf), f) == NULL) {
162 RTE_LOG(ERR, EAL, "%s(): cannot read sysfs value %s\n",
167 *val = strtoul(buf, &end, 0);
168 if ((buf[0] == '\0') || (end == NULL) || (*end != '\n')) {
169 RTE_LOG(ERR, EAL, "%s(): cannot parse sysfs value %s\n",
179 /* create memory configuration in shared/mmap memory. Take out
180 * a write lock on the memsegs, so we can auto-detect primary/secondary.
181 * This means we never close the file while running (auto-close on exit).
182 * We also don't lock the whole file, so that in future we can use read-locks
183 * on other parts, e.g. memzones, to detect if there are running secondary
186 rte_eal_config_create(void)
188 void *rte_mem_cfg_addr;
191 const char *pathname = eal_runtime_config_path();
193 if (internal_config.no_shconf)
196 /* map the config before hugepage address so that we don't waste a page */
197 if (internal_config.base_virtaddr != 0)
198 rte_mem_cfg_addr = (void *)
199 RTE_ALIGN_FLOOR(internal_config.base_virtaddr -
200 sizeof(struct rte_mem_config), sysconf(_SC_PAGE_SIZE));
202 rte_mem_cfg_addr = NULL;
205 mem_cfg_fd = open(pathname, O_RDWR | O_CREAT, 0660);
207 rte_panic("Cannot open '%s' for rte_mem_config\n", pathname);
210 retval = ftruncate(mem_cfg_fd, sizeof(*rte_config.mem_config));
213 rte_panic("Cannot resize '%s' for rte_mem_config\n", pathname);
216 retval = fcntl(mem_cfg_fd, F_SETLK, &wr_lock);
219 rte_exit(EXIT_FAILURE, "Cannot create lock on '%s'. Is another primary "
220 "process running?\n", pathname);
223 rte_mem_cfg_addr = mmap(rte_mem_cfg_addr, sizeof(*rte_config.mem_config),
224 PROT_READ | PROT_WRITE, MAP_SHARED, mem_cfg_fd, 0);
226 if (rte_mem_cfg_addr == MAP_FAILED){
227 rte_panic("Cannot mmap memory for rte_config\n");
229 memcpy(rte_mem_cfg_addr, &early_mem_config, sizeof(early_mem_config));
230 rte_config.mem_config = rte_mem_cfg_addr;
232 /* store address of the config in the config itself so that secondary
233 * processes could later map the config into this exact location */
234 rte_config.mem_config->mem_cfg_addr = (uintptr_t) rte_mem_cfg_addr;
238 /* attach to an existing shared memory config */
240 rte_eal_config_attach(void)
242 struct rte_mem_config *mem_config;
244 const char *pathname = eal_runtime_config_path();
246 if (internal_config.no_shconf)
250 mem_cfg_fd = open(pathname, O_RDWR);
252 rte_panic("Cannot open '%s' for rte_mem_config\n", pathname);
255 /* map it as read-only first */
256 mem_config = (struct rte_mem_config *) mmap(NULL, sizeof(*mem_config),
257 PROT_READ, MAP_SHARED, mem_cfg_fd, 0);
258 if (mem_config == MAP_FAILED)
259 rte_panic("Cannot mmap memory for rte_config! error %i (%s)\n",
260 errno, strerror(errno));
262 rte_config.mem_config = mem_config;
265 /* reattach the shared config at exact memory location primary process has it */
267 rte_eal_config_reattach(void)
269 struct rte_mem_config *mem_config;
270 void *rte_mem_cfg_addr;
272 if (internal_config.no_shconf)
275 /* save the address primary process has mapped shared config to */
276 rte_mem_cfg_addr = (void *) (uintptr_t) rte_config.mem_config->mem_cfg_addr;
278 /* unmap original config */
279 munmap(rte_config.mem_config, sizeof(struct rte_mem_config));
281 /* remap the config at proper address */
282 mem_config = (struct rte_mem_config *) mmap(rte_mem_cfg_addr,
283 sizeof(*mem_config), PROT_READ | PROT_WRITE, MAP_SHARED,
285 if (mem_config == MAP_FAILED || mem_config != rte_mem_cfg_addr) {
286 if (mem_config != MAP_FAILED)
287 /* errno is stale, don't use */
288 rte_panic("Cannot mmap memory for rte_config at [%p], got [%p]"
289 " - please use '--base-virtaddr' option\n",
290 rte_mem_cfg_addr, mem_config);
292 rte_panic("Cannot mmap memory for rte_config! error %i (%s)\n",
293 errno, strerror(errno));
297 rte_config.mem_config = mem_config;
300 /* Detect if we are a primary or a secondary process */
302 eal_proc_type_detect(void)
304 enum rte_proc_type_t ptype = RTE_PROC_PRIMARY;
305 const char *pathname = eal_runtime_config_path();
307 /* if we can open the file but not get a write-lock we are a secondary
308 * process. NOTE: if we get a file handle back, we keep that open
309 * and don't close it to prevent a race condition between multiple opens */
310 if (((mem_cfg_fd = open(pathname, O_RDWR)) >= 0) &&
311 (fcntl(mem_cfg_fd, F_SETLK, &wr_lock) < 0))
312 ptype = RTE_PROC_SECONDARY;
314 RTE_LOG(INFO, EAL, "Auto-detected process type: %s\n",
315 ptype == RTE_PROC_PRIMARY ? "PRIMARY" : "SECONDARY");
320 /* Sets up rte_config structure with the pointer to shared memory config.*/
322 rte_config_init(void)
324 rte_config.process_type = internal_config.process_type;
326 switch (rte_config.process_type){
327 case RTE_PROC_PRIMARY:
328 rte_eal_config_create();
330 case RTE_PROC_SECONDARY:
331 rte_eal_config_attach();
332 rte_eal_mcfg_wait_complete(rte_config.mem_config);
333 rte_eal_config_reattach();
336 case RTE_PROC_INVALID:
337 rte_panic("Invalid process type\n");
341 /* Unlocks hugepage directories that were locked by eal_hugepage_info_init */
343 eal_hugedirs_unlock(void)
347 for (i = 0; i < MAX_HUGEPAGE_SIZES; i++)
349 /* skip uninitialized */
350 if (internal_config.hugepage_info[i].lock_descriptor < 0)
352 /* unlock hugepage file */
353 flock(internal_config.hugepage_info[i].lock_descriptor, LOCK_UN);
354 close(internal_config.hugepage_info[i].lock_descriptor);
355 /* reset the field */
356 internal_config.hugepage_info[i].lock_descriptor = -1;
362 eal_usage(const char *prgname)
364 printf("\nUsage: %s ", prgname);
366 printf("EAL Linux options:\n"
367 " --"OPT_SOCKET_MEM" Memory to allocate on sockets (comma separated values)\n"
368 " --"OPT_HUGE_DIR" Directory where hugetlbfs is mounted\n"
369 " --"OPT_FILE_PREFIX" Prefix for hugepage filenames\n"
370 " --"OPT_BASE_VIRTADDR" Base virtual address\n"
371 " --"OPT_CREATE_UIO_DEV" Create /dev/uioX (usually done by hotplug)\n"
372 " --"OPT_VFIO_INTR" Interrupt mode for VFIO (legacy|msi|msix)\n"
374 /* Allow the application to print its usage message too if hook is set */
375 if ( rte_application_usage_hook ) {
376 printf("===== Application Usage =====\n\n");
377 rte_application_usage_hook(prgname);
381 /* Set a per-application usage message */
383 rte_set_application_usage_hook( rte_usage_hook_t usage_func )
385 rte_usage_hook_t old_func;
387 /* Will be NULL on the first call to denote the last usage routine. */
388 old_func = rte_application_usage_hook;
389 rte_application_usage_hook = usage_func;
395 eal_parse_socket_mem(char *socket_mem)
397 char * arg[RTE_MAX_NUMA_NODES];
400 uint64_t total_mem = 0;
402 len = strnlen(socket_mem, SOCKET_MEM_STRLEN);
403 if (len == SOCKET_MEM_STRLEN) {
404 RTE_LOG(ERR, EAL, "--socket-mem is too long\n");
408 /* all other error cases will be caught later */
409 if (!isdigit(socket_mem[len-1]))
412 /* split the optarg into separate socket values */
413 arg_num = rte_strsplit(socket_mem, len,
414 arg, RTE_MAX_NUMA_NODES, ',');
416 /* if split failed, or 0 arguments */
420 internal_config.force_sockets = 1;
422 /* parse each defined socket option */
424 for (i = 0; i < arg_num; i++) {
426 internal_config.socket_mem[i] = strtoull(arg[i], &end, 10);
428 /* check for invalid input */
430 (arg[i][0] == '\0') || (end == NULL) || (*end != '\0'))
432 internal_config.socket_mem[i] *= 1024ULL;
433 internal_config.socket_mem[i] *= 1024ULL;
434 total_mem += internal_config.socket_mem[i];
437 /* check if we have a positive amount of total memory */
445 eal_parse_base_virtaddr(const char *arg)
451 addr = strtoull(arg, &end, 16);
453 /* check for errors */
454 if ((errno != 0) || (arg[0] == '\0') || end == NULL || (*end != '\0'))
457 /* make sure we don't exceed 32-bit boundary on 32-bit target */
459 if (addr >= UINTPTR_MAX)
463 /* align the addr on 16M boundary, 16MB is the minimum huge page
464 * size on IBM Power architecture. If the addr is aligned to 16MB,
465 * it can align to 2MB for x86. So this alignment can also be used
467 internal_config.base_virtaddr =
468 RTE_PTR_ALIGN_CEIL((uintptr_t)addr, (size_t)RTE_PGSIZE_16M);
474 eal_parse_vfio_intr(const char *mode)
479 enum rte_intr_mode value;
481 { "legacy", RTE_INTR_MODE_LEGACY },
482 { "msi", RTE_INTR_MODE_MSI },
483 { "msix", RTE_INTR_MODE_MSIX },
486 for (i = 0; i < RTE_DIM(map); i++) {
487 if (!strcmp(mode, map[i].name)) {
488 internal_config.vfio_intr_mode = map[i].value;
495 /* Parse the arguments for --log-level only */
497 eal_log_level_parse(int argc, char **argv)
502 const int old_optind = optind;
503 const int old_optopt = optopt;
504 char * const old_optarg = optarg;
509 while ((opt = getopt_long(argc, argvopt, eal_short_options,
510 eal_long_options, &option_index)) != EOF) {
514 /* getopt is not happy, stop right now */
518 ret = (opt == OPT_LOG_LEVEL_NUM) ?
519 eal_parse_common_option(opt, optarg, &internal_config) : 0;
521 /* common parser is not happy */
526 /* restore getopt lib */
532 /* Parse the argument given in the command line of the application */
534 eal_parse_args(int argc, char **argv)
539 char *prgname = argv[0];
540 const int old_optind = optind;
541 const int old_optopt = optopt;
542 char * const old_optarg = optarg;
547 while ((opt = getopt_long(argc, argvopt, eal_short_options,
548 eal_long_options, &option_index)) != EOF) {
550 /* getopt is not happy, stop right now */
557 ret = eal_parse_common_option(opt, optarg, &internal_config);
558 /* common parser is not happy */
564 /* common parser handled this option */
573 case OPT_HUGE_DIR_NUM:
574 internal_config.hugepage_dir = strdup(optarg);
577 case OPT_FILE_PREFIX_NUM:
578 internal_config.hugefile_prefix = strdup(optarg);
581 case OPT_SOCKET_MEM_NUM:
582 if (eal_parse_socket_mem(optarg) < 0) {
583 RTE_LOG(ERR, EAL, "invalid parameters for --"
584 OPT_SOCKET_MEM "\n");
591 case OPT_BASE_VIRTADDR_NUM:
592 if (eal_parse_base_virtaddr(optarg) < 0) {
593 RTE_LOG(ERR, EAL, "invalid parameter for --"
594 OPT_BASE_VIRTADDR "\n");
601 case OPT_VFIO_INTR_NUM:
602 if (eal_parse_vfio_intr(optarg) < 0) {
603 RTE_LOG(ERR, EAL, "invalid parameters for --"
611 case OPT_CREATE_UIO_DEV_NUM:
612 internal_config.create_uio_dev = 1;
615 case OPT_MBUF_POOL_OPS_NAME_NUM:
616 internal_config.user_mbuf_pool_ops_name = optarg;
620 if (opt < OPT_LONG_MIN_NUM && isprint(opt)) {
621 RTE_LOG(ERR, EAL, "Option %c is not supported "
623 } else if (opt >= OPT_LONG_MIN_NUM &&
624 opt < OPT_LONG_MAX_NUM) {
625 RTE_LOG(ERR, EAL, "Option %s is not supported "
627 eal_long_options[option_index].name);
629 RTE_LOG(ERR, EAL, "Option %d is not supported "
638 if (eal_adjust_config(&internal_config) != 0) {
644 if (eal_check_common_options(&internal_config) != 0) {
651 argv[optind-1] = prgname;
655 /* restore getopt lib */
664 eal_check_mem_on_local_socket(void)
666 const struct rte_memseg *ms;
669 socket_id = rte_lcore_to_socket_id(rte_config.master_lcore);
671 ms = rte_eal_get_physmem_layout();
673 for (i = 0; i < RTE_MAX_MEMSEG; i++)
674 if (ms[i].socket_id == socket_id &&
678 RTE_LOG(WARNING, EAL, "WARNING: Master core has no "
679 "memory on local socket!\n");
683 sync_func(__attribute__((unused)) void *arg)
689 rte_eal_mcfg_complete(void)
691 /* ALL shared mem_config related INIT DONE */
692 if (rte_config.process_type == RTE_PROC_PRIMARY)
693 rte_config.mem_config->magic = RTE_MAGIC;
697 * Request iopl privilege for all RPL, returns 0 on success
698 * iopl() call is mostly for the i386 architecture. For other architectures,
699 * return -1 to indicate IO privilege can't be changed in this way.
702 rte_eal_iopl_init(void)
704 #if defined(RTE_ARCH_X86)
712 static int rte_eal_vfio_setup(void)
714 int vfio_enabled = 0;
716 if (rte_vfio_enable("vfio"))
718 vfio_enabled = rte_vfio_is_enabled("vfio");
722 /* if we are primary process, create a thread to communicate with
723 * secondary processes. the thread will use a socket to wait for
724 * requests from secondary process to send open file descriptors,
725 * because VFIO does not allow multiple open descriptors on a group or
728 if (internal_config.process_type == RTE_PROC_PRIMARY &&
729 vfio_mp_sync_setup() < 0)
737 static void rte_eal_init_alert(const char *msg)
739 fprintf(stderr, "EAL: FATAL: %s\n", msg);
740 RTE_LOG(ERR, EAL, "%s\n", msg);
743 /* Launch threads, called at application init(). */
745 rte_eal_init(int argc, char **argv)
749 static rte_atomic32_t run_once = RTE_ATOMIC32_INIT(0);
751 char cpuset[RTE_CPU_AFFINITY_STR_LEN];
752 char thread_name[RTE_MAX_THREAD_NAME_LEN];
754 /* checks if the machine is adequate */
755 if (!rte_cpu_is_supported()) {
756 rte_eal_init_alert("unsupported cpu type.");
761 if (!rte_atomic32_test_and_set(&run_once)) {
762 rte_eal_init_alert("already called initialization.");
763 rte_errno = EALREADY;
767 logid = strrchr(argv[0], '/');
768 logid = strdup(logid ? logid + 1: argv[0]);
770 thread_id = pthread_self();
772 eal_reset_internal_config(&internal_config);
774 /* set log level as early as possible */
775 eal_log_level_parse(argc, argv);
777 if (rte_eal_cpu_init() < 0) {
778 rte_eal_init_alert("Cannot detect lcores.");
783 fctret = eal_parse_args(argc, argv);
785 rte_eal_init_alert("Invalid 'command line' arguments.");
787 rte_atomic32_clear(&run_once);
791 if (eal_plugins_init() < 0) {
792 rte_eal_init_alert("Cannot init plugins\n");
794 rte_atomic32_clear(&run_once);
798 if (eal_option_device_parse()) {
800 rte_atomic32_clear(&run_once);
804 if (rte_bus_scan()) {
805 rte_eal_init_alert("Cannot scan the buses for devices\n");
807 rte_atomic32_clear(&run_once);
811 /* autodetect the iova mapping mode (default is iova_pa) */
812 rte_eal_get_configuration()->iova_mode = rte_bus_get_iommu_class();
814 /* Workaround for KNI which requires physical address to work */
815 if (rte_eal_get_configuration()->iova_mode == RTE_IOVA_VA &&
816 rte_eal_check_module("rte_kni") == 1) {
817 rte_eal_get_configuration()->iova_mode = RTE_IOVA_PA;
818 RTE_LOG(WARNING, EAL,
819 "Some devices want IOVA as VA but PA will be used because.. "
820 "KNI module inserted\n");
823 if (internal_config.no_hugetlbfs == 0 &&
824 internal_config.process_type != RTE_PROC_SECONDARY &&
825 eal_hugepage_info_init() < 0) {
826 rte_eal_init_alert("Cannot get hugepage information.");
828 rte_atomic32_clear(&run_once);
832 if (internal_config.memory == 0 && internal_config.force_sockets == 0) {
833 if (internal_config.no_hugetlbfs)
834 internal_config.memory = MEMSIZE_IF_NO_HUGE_PAGE;
837 if (internal_config.vmware_tsc_map == 1) {
838 #ifdef RTE_LIBRTE_EAL_VMWARE_TSC_MAP_SUPPORT
839 rte_cycles_vmware_tsc_map = 1;
840 RTE_LOG (DEBUG, EAL, "Using VMWARE TSC MAP, "
841 "you must have monitor_control.pseudo_perfctr = TRUE\n");
843 RTE_LOG (WARNING, EAL, "Ignoring --vmware-tsc-map because "
844 "RTE_LIBRTE_EAL_VMWARE_TSC_MAP_SUPPORT is not set\n");
848 rte_srand(rte_rdtsc());
852 if (rte_eal_log_init(logid, internal_config.syslog_facility) < 0) {
853 rte_eal_init_alert("Cannot init logging.");
855 rte_atomic32_clear(&run_once);
859 if (rte_mp_channel_init() < 0) {
860 rte_eal_init_alert("failed to init mp channel\n");
861 if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
868 if (rte_eal_vfio_setup() < 0) {
869 rte_eal_init_alert("Cannot init VFIO\n");
871 rte_atomic32_clear(&run_once);
876 if (rte_eal_memory_init() < 0) {
877 rte_eal_init_alert("Cannot init memory\n");
882 /* the directories are locked during eal_hugepage_info_init */
883 eal_hugedirs_unlock();
885 if (rte_eal_memzone_init() < 0) {
886 rte_eal_init_alert("Cannot init memzone\n");
891 if (rte_eal_tailqs_init() < 0) {
892 rte_eal_init_alert("Cannot init tail queues for objects\n");
897 if (rte_eal_alarm_init() < 0) {
898 rte_eal_init_alert("Cannot init interrupt-handling thread\n");
899 /* rte_eal_alarm_init sets rte_errno on failure. */
903 if (rte_eal_timer_init() < 0) {
904 rte_eal_init_alert("Cannot init HPET or TSC timers\n");
909 eal_check_mem_on_local_socket();
911 eal_thread_init_master(rte_config.master_lcore);
913 ret = eal_thread_dump_affinity(cpuset, RTE_CPU_AFFINITY_STR_LEN);
915 RTE_LOG(DEBUG, EAL, "Master lcore %u is ready (tid=%x;cpuset=[%s%s])\n",
916 rte_config.master_lcore, (int)thread_id, cpuset,
917 ret == 0 ? "" : "...");
919 if (rte_eal_intr_init() < 0) {
920 rte_eal_init_alert("Cannot init interrupt-handling thread\n");
924 RTE_LCORE_FOREACH_SLAVE(i) {
927 * create communication pipes between master thread
930 if (pipe(lcore_config[i].pipe_master2slave) < 0)
931 rte_panic("Cannot create pipe\n");
932 if (pipe(lcore_config[i].pipe_slave2master) < 0)
933 rte_panic("Cannot create pipe\n");
935 lcore_config[i].state = WAIT;
937 /* create a thread for each lcore */
938 ret = pthread_create(&lcore_config[i].thread_id, NULL,
939 eal_thread_loop, NULL);
941 rte_panic("Cannot create thread\n");
943 /* Set thread_name for aid in debugging. */
944 snprintf(thread_name, RTE_MAX_THREAD_NAME_LEN,
945 "lcore-slave-%d", i);
946 ret = rte_thread_setname(lcore_config[i].thread_id,
950 "Cannot set name for lcore thread\n");
954 * Launch a dummy function on all slave lcores, so that master lcore
955 * knows they are all ready when this function returns.
957 rte_eal_mp_remote_launch(sync_func, NULL, SKIP_MASTER);
958 rte_eal_mp_wait_lcore();
960 /* initialize services so vdevs register service during bus_probe. */
961 ret = rte_service_init();
963 rte_eal_init_alert("rte_service_init() failed\n");
968 /* Probe all the buses and devices/drivers on them */
969 if (rte_bus_probe()) {
970 rte_eal_init_alert("Cannot probe devices\n");
975 /* initialize default service/lcore mappings and start running. Ignore
976 * -ENOTSUP, as it indicates no service coremask passed to EAL.
978 ret = rte_service_start_with_defaults();
979 if (ret < 0 && ret != -ENOTSUP) {
984 rte_eal_mcfg_complete();
989 int __rte_experimental
990 rte_eal_cleanup(void)
992 rte_service_finalize();
997 enum rte_lcore_role_t
998 rte_eal_lcore_role(unsigned lcore_id)
1000 return rte_config.lcore_role[lcore_id];
1003 enum rte_proc_type_t
1004 rte_eal_process_type(void)
1006 return rte_config.process_type;
1009 int rte_eal_has_hugepages(void)
1011 return ! internal_config.no_hugetlbfs;
1014 int rte_eal_has_pci(void)
1016 return !internal_config.no_pci;
1019 int rte_eal_create_uio_dev(void)
1021 return internal_config.create_uio_dev;
1025 rte_eal_vfio_intr_mode(void)
1027 return internal_config.vfio_intr_mode;
1031 rte_eal_check_module(const char *module_name)
1033 char sysfs_mod_name[PATH_MAX];
1037 if (NULL == module_name)
1040 /* Check if there is sysfs mounted */
1041 if (stat("/sys/module", &st) != 0) {
1042 RTE_LOG(DEBUG, EAL, "sysfs is not mounted! error %i (%s)\n",
1043 errno, strerror(errno));
1047 /* A module might be built-in, therefore try sysfs */
1048 n = snprintf(sysfs_mod_name, PATH_MAX, "/sys/module/%s", module_name);
1049 if (n < 0 || n > PATH_MAX) {
1050 RTE_LOG(DEBUG, EAL, "Could not format module path\n");
1054 if (stat(sysfs_mod_name, &st) != 0) {
1055 RTE_LOG(DEBUG, EAL, "Module %s not found! error %i (%s)\n",
1056 sysfs_mod_name, errno, strerror(errno));
1060 /* Module has been found */