/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(c) 2010-2018 Intel Corporation.
 * Copyright(c) 2014 6WIND S.A.
 */

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <stdarg.h>
#include <unistd.h>
#include <pthread.h>
#include <syslog.h>
#include <getopt.h>
#include <sys/file.h>
#include <stddef.h>
#include <errno.h>
#include <limits.h>
#include <sys/mman.h>
#include <sys/queue.h>
#include <sys/stat.h>

#include <rte_compat.h>
#include <rte_common.h>
#include <rte_debug.h>
#include <rte_memory.h>
#include <rte_launch.h>
#include <rte_eal.h>
#include <rte_errno.h>
#include <rte_per_lcore.h>
#include <rte_lcore.h>
#include <rte_service_component.h>
#include <rte_log.h>
#include <rte_random.h>
#include <rte_cycles.h>
#include <rte_string_fns.h>
#include <rte_cpuflags.h>
#include <rte_interrupts.h>
#include <rte_bus.h>
#include <rte_dev.h>
#include <rte_devargs.h>
#include <rte_version.h>
#include <rte_vfio.h>
#include <malloc_heap.h>
#include <telemetry_internal.h>

#include "eal_private.h"
#include "eal_thread.h"
#include "eal_internal_cfg.h"
#include "eal_filesystem.h"
#include "eal_hugepages.h"
#include "eal_options.h"
#include "eal_memcfg.h"
#include "eal_trace.h"

#define MEMSIZE_IF_NO_HUGE_PAGE (64ULL * 1024ULL * 1024ULL)

/* define fd variable here, because file needs to be kept open for the
 * duration of the program, as we hold a write lock on it in the primary proc */
static int mem_cfg_fd = -1;

static struct flock wr_lock = {
                .l_type = F_WRLCK,
                .l_whence = SEEK_SET,
                .l_start = offsetof(struct rte_mem_config, memsegs),
                .l_len = RTE_SIZEOF_FIELD(struct rte_mem_config, memsegs),
};

/* internal configuration (per-core) */
struct lcore_config lcore_config[RTE_MAX_LCORE];

/* used by rte_rdtsc() */
int rte_cycles_vmware_tsc_map;

static const char *default_runtime_dir = "/var/run";

int
eal_create_runtime_dir(void)
{
        const char *directory = default_runtime_dir;
        const char *xdg_runtime_dir = getenv("XDG_RUNTIME_DIR");
        const char *fallback = "/tmp";
        char run_dir[PATH_MAX];
        char tmp[PATH_MAX];
        int ret;

        if (getuid() != 0) {
                /* try XDG path first, fall back to /tmp */
                if (xdg_runtime_dir != NULL)
                        directory = xdg_runtime_dir;
                else
                        directory = fallback;
        }
        /* create DPDK subdirectory under runtime dir */
        ret = snprintf(tmp, sizeof(tmp), "%s/dpdk", directory);
        if (ret < 0 || ret == sizeof(tmp)) {
                RTE_LOG(ERR, EAL, "Error creating DPDK runtime path name\n");
                return -1;
        }

        /* create prefix-specific subdirectory under DPDK runtime dir */
        ret = snprintf(run_dir, sizeof(run_dir), "%s/%s",
                        tmp, eal_get_hugefile_prefix());
        if (ret < 0 || ret == sizeof(run_dir)) {
                RTE_LOG(ERR, EAL, "Error creating prefix-specific runtime path name\n");
                return -1;
        }

        /* create the path if it doesn't exist. no "mkdir -p" here, so do it
         * step by step.
         */
        ret = mkdir(tmp, 0700);
        if (ret < 0 && errno != EEXIST) {
                RTE_LOG(ERR, EAL, "Error creating '%s': %s\n",
                        tmp, strerror(errno));
                return -1;
        }

        ret = mkdir(run_dir, 0700);
        if (ret < 0 && errno != EEXIST) {
                RTE_LOG(ERR, EAL, "Error creating '%s': %s\n",
                        run_dir, strerror(errno));
                return -1;
        }

        if (eal_set_runtime_dir(run_dir, sizeof(run_dir)))
                return -1;

        return 0;
}

int
eal_clean_runtime_dir(void)
{
        /* FreeBSD doesn't need this implemented for now, because, unlike Linux,
         * FreeBSD doesn't create per-process files, so no need to clean up.
         */
        return 0;
}

/* parse a sysfs (or other) file containing one integer value */
int
eal_parse_sysfs_value(const char *filename, unsigned long *val)
{
        FILE *f;
        char buf[BUFSIZ];
        char *end = NULL;

        if ((f = fopen(filename, "r")) == NULL) {
                RTE_LOG(ERR, EAL, "%s(): cannot open sysfs value %s\n",
                        __func__, filename);
                return -1;
        }

        if (fgets(buf, sizeof(buf), f) == NULL) {
                RTE_LOG(ERR, EAL, "%s(): cannot read sysfs value %s\n",
                        __func__, filename);
                fclose(f);
                return -1;
        }
        *val = strtoul(buf, &end, 0);
        if ((buf[0] == '\0') || (end == NULL) || (*end != '\n')) {
                RTE_LOG(ERR, EAL, "%s(): cannot parse sysfs value %s\n",
                                __func__, filename);
                fclose(f);
                return -1;
        }
        fclose(f);
        return 0;
}


/* create memory configuration in shared/mmap memory. Take out
 * a write lock on the memsegs, so we can auto-detect primary/secondary.
 * This means we never close the file while running (auto-close on exit).
 * We also don't lock the whole file, so that in future we can use read-locks
 * on other parts, e.g. memzones, to detect if there are running secondary
 * processes. */
static int
rte_eal_config_create(void)
{
        struct rte_config *config = rte_eal_get_configuration();
        const struct internal_config *internal_conf =
                eal_get_internal_configuration();
        size_t page_sz = sysconf(_SC_PAGE_SIZE);
        size_t cfg_len = sizeof(struct rte_mem_config);
        size_t cfg_len_aligned = RTE_ALIGN(cfg_len, page_sz);
        void *rte_mem_cfg_addr, *mapped_mem_cfg_addr;
        int retval;

        const char *pathname = eal_runtime_config_path();

        if (internal_conf->no_shconf)
                return 0;

        /* map the config before base address so that we don't waste a page */
        if (internal_conf->base_virtaddr != 0)
                rte_mem_cfg_addr = (void *)
                        RTE_ALIGN_FLOOR(internal_conf->base_virtaddr -
                        sizeof(struct rte_mem_config), page_sz);
        else
                rte_mem_cfg_addr = NULL;

        if (mem_cfg_fd < 0){
                mem_cfg_fd = open(pathname, O_RDWR | O_CREAT, 0600);
                if (mem_cfg_fd < 0) {
                        RTE_LOG(ERR, EAL, "Cannot open '%s' for rte_mem_config\n",
                                pathname);
                        return -1;
                }
        }

        retval = ftruncate(mem_cfg_fd, cfg_len);
        if (retval < 0){
                close(mem_cfg_fd);
                mem_cfg_fd = -1;
                RTE_LOG(ERR, EAL, "Cannot resize '%s' for rte_mem_config\n",
                        pathname);
                return -1;
        }

        retval = fcntl(mem_cfg_fd, F_SETLK, &wr_lock);
        if (retval < 0){
                close(mem_cfg_fd);
                mem_cfg_fd = -1;
                RTE_LOG(ERR, EAL, "Cannot create lock on '%s'. Is another primary "
                        "process running?\n", pathname);
                return -1;
        }

        /* reserve space for config */
        rte_mem_cfg_addr = eal_get_virtual_area(rte_mem_cfg_addr,
                        &cfg_len_aligned, page_sz, 0, 0);
        if (rte_mem_cfg_addr == NULL) {
                RTE_LOG(ERR, EAL, "Cannot mmap memory for rte_config\n");
                close(mem_cfg_fd);
                mem_cfg_fd = -1;
                return -1;
        }

        /* remap the actual file into the space we've just reserved */
        mapped_mem_cfg_addr = mmap(rte_mem_cfg_addr,
                        cfg_len_aligned, PROT_READ | PROT_WRITE,
                        MAP_SHARED | MAP_FIXED, mem_cfg_fd, 0);
        if (mapped_mem_cfg_addr == MAP_FAILED) {
                RTE_LOG(ERR, EAL, "Cannot remap memory for rte_config\n");
                munmap(rte_mem_cfg_addr, cfg_len);
                close(mem_cfg_fd);
                mem_cfg_fd = -1;
                return -1;
        }

        memcpy(rte_mem_cfg_addr, config->mem_config, sizeof(struct rte_mem_config));
        config->mem_config = rte_mem_cfg_addr;

        /* store address of the config in the config itself so that secondary
         * processes could later map the config into this exact location
         */
        config->mem_config->mem_cfg_addr = (uintptr_t) rte_mem_cfg_addr;
        return 0;
}

/* attach to an existing shared memory config */
static int
rte_eal_config_attach(void)
{
        void *rte_mem_cfg_addr;
        const char *pathname = eal_runtime_config_path();
        struct rte_config *config = rte_eal_get_configuration();
        const struct internal_config *internal_conf =
                eal_get_internal_configuration();


        if (internal_conf->no_shconf)
                return 0;

        if (mem_cfg_fd < 0){
                mem_cfg_fd = open(pathname, O_RDWR);
                if (mem_cfg_fd < 0) {
                        RTE_LOG(ERR, EAL, "Cannot open '%s' for rte_mem_config\n",
                                pathname);
                        return -1;
                }
        }

        rte_mem_cfg_addr = mmap(NULL, sizeof(*config->mem_config),
                                PROT_READ, MAP_SHARED, mem_cfg_fd, 0);
        /* don't close the fd here, it will be closed on reattach */
        if (rte_mem_cfg_addr == MAP_FAILED) {
                close(mem_cfg_fd);
                mem_cfg_fd = -1;
                RTE_LOG(ERR, EAL, "Cannot mmap memory for rte_config! error %i (%s)\n",
                        errno, strerror(errno));
                return -1;
        }

        config->mem_config = rte_mem_cfg_addr;

        return 0;
}

/* reattach the shared config at exact memory location primary process has it */
static int
rte_eal_config_reattach(void)
{
        struct rte_mem_config *mem_config;
        void *rte_mem_cfg_addr;
        struct rte_config *config = rte_eal_get_configuration();
        const struct internal_config *internal_conf =
                eal_get_internal_configuration();

        if (internal_conf->no_shconf)
                return 0;

        /* save the address primary process has mapped shared config to */
        rte_mem_cfg_addr =
                        (void *)(uintptr_t)config->mem_config->mem_cfg_addr;

        /* unmap original config */
        munmap(config->mem_config, sizeof(struct rte_mem_config));

        /* remap the config at proper address */
        mem_config = (struct rte_mem_config *) mmap(rte_mem_cfg_addr,
                        sizeof(*mem_config), PROT_READ | PROT_WRITE, MAP_SHARED,
                        mem_cfg_fd, 0);
        close(mem_cfg_fd);
        mem_cfg_fd = -1;

        if (mem_config == MAP_FAILED || mem_config != rte_mem_cfg_addr) {
                if (mem_config != MAP_FAILED) {
                        /* errno is stale, don't use */
                        RTE_LOG(ERR, EAL, "Cannot mmap memory for rte_config at [%p], got [%p]"
                                          " - please use '--" OPT_BASE_VIRTADDR
                                          "' option\n",
                                rte_mem_cfg_addr, mem_config);
                        munmap(mem_config, sizeof(struct rte_mem_config));
                        return -1;
                }
                RTE_LOG(ERR, EAL, "Cannot mmap memory for rte_config! error %i (%s)\n",
                        errno, strerror(errno));
                return -1;
        }

        config->mem_config = mem_config;

        return 0;
}

/* Detect if we are a primary or a secondary process */
enum rte_proc_type_t
eal_proc_type_detect(void)
{
        enum rte_proc_type_t ptype = RTE_PROC_PRIMARY;
        const char *pathname = eal_runtime_config_path();
        const struct internal_config *internal_conf =
                eal_get_internal_configuration();

        /* if there no shared config, there can be no secondary processes */
        if (!internal_conf->no_shconf) {
                /* if we can open the file but not get a write-lock we are a
                 * secondary process. NOTE: if we get a file handle back, we
                 * keep that open and don't close it to prevent a race condition
                 * between multiple opens.
                 */
                if (((mem_cfg_fd = open(pathname, O_RDWR)) >= 0) &&
                                (fcntl(mem_cfg_fd, F_SETLK, &wr_lock) < 0))
                        ptype = RTE_PROC_SECONDARY;
        }

        RTE_LOG(INFO, EAL, "Auto-detected process type: %s\n",
                        ptype == RTE_PROC_PRIMARY ? "PRIMARY" : "SECONDARY");

        return ptype;
}

/* Sets up rte_config structure with the pointer to shared memory config.*/
static int
rte_config_init(void)
{
        struct rte_config *config = rte_eal_get_configuration();
        const struct internal_config *internal_conf =
                eal_get_internal_configuration();

        config->process_type = internal_conf->process_type;

        switch (config->process_type) {
        case RTE_PROC_PRIMARY:
                if (rte_eal_config_create() < 0)
                        return -1;
                eal_mcfg_update_from_internal();
                break;
        case RTE_PROC_SECONDARY:
                if (rte_eal_config_attach() < 0)
                        return -1;
                eal_mcfg_wait_complete();
                if (eal_mcfg_check_version() < 0) {
                        RTE_LOG(ERR, EAL, "Primary and secondary process DPDK version mismatch\n");
                        return -1;
                }
                if (rte_eal_config_reattach() < 0)
                        return -1;
                if (!__rte_mp_enable()) {
                        RTE_LOG(ERR, EAL, "Primary process refused secondary attachment\n");
                        return -1;
                }
                eal_mcfg_update_internal();
                break;
        case RTE_PROC_AUTO:
        case RTE_PROC_INVALID:
                RTE_LOG(ERR, EAL, "Invalid process type %d\n",
                        config->process_type);
                return -1;
        }

        return 0;
}

/* display usage */
static void
eal_usage(const char *prgname)
{
        rte_usage_hook_t hook = eal_get_application_usage_hook();

        printf("\nUsage: %s ", prgname);
        eal_common_usage();
        /* Allow the application to print its usage message too if hook is set */
        if (hook) {
                printf("===== Application Usage =====\n\n");
                (hook)(prgname);
        }
}

static inline size_t
eal_get_hugepage_mem_size(void)
{
        uint64_t size = 0;
        unsigned i, j;
        struct internal_config *internal_conf =
                eal_get_internal_configuration();

        for (i = 0; i < internal_conf->num_hugepage_sizes; i++) {
                struct hugepage_info *hpi = &internal_conf->hugepage_info[i];
                if (strnlen(hpi->hugedir, sizeof(hpi->hugedir)) != 0) {
                        for (j = 0; j < RTE_MAX_NUMA_NODES; j++) {
                                size += hpi->hugepage_sz * hpi->num_pages[j];
                        }
                }
        }

        return (size < SIZE_MAX) ? (size_t)(size) : SIZE_MAX;
}

/* Parse the arguments for --log-level only */
static void
eal_log_level_parse(int argc, char **argv)
{
        int opt;
        char **argvopt;
        int option_index;
        const int old_optind = optind;
        const int old_optopt = optopt;
        const int old_optreset = optreset;
        char * const old_optarg = optarg;
        struct internal_config *internal_conf =
                eal_get_internal_configuration();

        argvopt = argv;
        optind = 1;
        optreset = 1;

        while ((opt = getopt_long(argc, argvopt, eal_short_options,
                                  eal_long_options, &option_index)) != EOF) {

                int ret;

                /* getopt is not happy, stop right now */
                if (opt == '?')
                        break;

                ret = (opt == OPT_LOG_LEVEL_NUM) ?
                    eal_parse_common_option(opt, optarg, internal_conf) : 0;

                /* common parser is not happy */
                if (ret < 0)
                        break;
        }

        /* restore getopt lib */
        optind = old_optind;
        optopt = old_optopt;
        optreset = old_optreset;
        optarg = old_optarg;
}

/* Parse the argument given in the command line of the application */
static int
eal_parse_args(int argc, char **argv)
{
        int opt, ret;
        char **argvopt;
        int option_index;
        char *prgname = argv[0];
        const int old_optind = optind;
        const int old_optopt = optopt;
        const int old_optreset = optreset;
        char * const old_optarg = optarg;
        struct internal_config *internal_conf =
                eal_get_internal_configuration();

        argvopt = argv;
        optind = 1;
        optreset = 1;

        while ((opt = getopt_long(argc, argvopt, eal_short_options,
                                  eal_long_options, &option_index)) != EOF) {

                /* getopt didn't recognise the option */
                if (opt == '?') {
                        eal_usage(prgname);
                        ret = -1;
                        goto out;
                }

                /* eal_log_level_parse() already handled this option */
                if (opt == OPT_LOG_LEVEL_NUM)
                        continue;

                ret = eal_parse_common_option(opt, optarg, internal_conf);
                /* common parser is not happy */
                if (ret < 0) {
                        eal_usage(prgname);
                        ret = -1;
                        goto out;
                }
                /* common parser handled this option */
                if (ret == 0)
                        continue;

                switch (opt) {
                case OPT_MBUF_POOL_OPS_NAME_NUM:
                {
                        char *ops_name = strdup(optarg);
                        if (ops_name == NULL)
                                RTE_LOG(ERR, EAL, "Could not store mbuf pool ops name\n");
                        else {
                                /* free old ops name */
                                if (internal_conf->user_mbuf_pool_ops_name !=
                                                NULL)
                                        free(internal_conf->user_mbuf_pool_ops_name);

                                internal_conf->user_mbuf_pool_ops_name =
                                                ops_name;
                        }
                        break;
                }
                case 'h':
                        eal_usage(prgname);
                        exit(EXIT_SUCCESS);
                default:
                        if (opt < OPT_LONG_MIN_NUM && isprint(opt)) {
                                RTE_LOG(ERR, EAL, "Option %c is not supported "
                                        "on FreeBSD\n", opt);
                        } else if (opt >= OPT_LONG_MIN_NUM &&
                                   opt < OPT_LONG_MAX_NUM) {
                                RTE_LOG(ERR, EAL, "Option %s is not supported "
                                        "on FreeBSD\n",
                                        eal_long_options[option_index].name);
                        } else {
                                RTE_LOG(ERR, EAL, "Option %d is not supported "
                                        "on FreeBSD\n", opt);
                        }
                        eal_usage(prgname);
                        ret = -1;
                        goto out;
                }
        }

        /* create runtime data directory. In no_shconf mode, skip any errors */
        if (eal_create_runtime_dir() < 0) {
                if (internal_conf->no_shconf == 0) {
                        RTE_LOG(ERR, EAL, "Cannot create runtime directory\n");
                        ret = -1;
                        goto out;
                } else
                        RTE_LOG(WARNING, EAL, "No DPDK runtime directory created\n");
        }

        if (eal_adjust_config(internal_conf) != 0) {
                ret = -1;
                goto out;
        }

        /* sanity checks */
        if (eal_check_common_options(internal_conf) != 0) {
                eal_usage(prgname);
                ret = -1;
                goto out;
        }

        if (optind >= 0)
                argv[optind-1] = prgname;
        ret = optind-1;

out:
        /* restore getopt lib */
        optind = old_optind;
        optopt = old_optopt;
        optreset = old_optreset;
        optarg = old_optarg;

        return ret;
}

static int
check_socket(const struct rte_memseg_list *msl, void *arg)
{
        int *socket_id = arg;

        if (msl->external)
                return 0;

        if (msl->socket_id == *socket_id && msl->memseg_arr.count != 0)
                return 1;

        return 0;
}

static void
eal_check_mem_on_local_socket(void)
{
        int socket_id;
        const struct rte_config *config = rte_eal_get_configuration();

        socket_id = rte_lcore_to_socket_id(config->main_lcore);

        if (rte_memseg_list_walk(check_socket, &socket_id) == 0)
                RTE_LOG(WARNING, EAL, "WARNING: Main core has no memory on local socket!\n");
}


static int
sync_func(__rte_unused void *arg)
{
        return 0;
}
/* Abstraction for port I/0 privilege */
int
rte_eal_iopl_init(void)
{
        static int fd = -1;

        if (fd < 0)
                fd = open("/dev/io", O_RDWR);

        if (fd < 0)
                return -1;
        /* keep fd open for iopl */
        return 0;
}

static void rte_eal_init_alert(const char *msg)
{
        fprintf(stderr, "EAL: FATAL: %s\n", msg);
        RTE_LOG(ERR, EAL, "%s\n", msg);
}

/* Launch threads, called at application init(). */
int
rte_eal_init(int argc, char **argv)
{
        int i, fctret, ret;
        pthread_t thread_id;
        static uint32_t run_once;
        uint32_t has_run = 0;
        char cpuset[RTE_CPU_AFFINITY_STR_LEN];
        char thread_name[RTE_MAX_THREAD_NAME_LEN];
        const struct rte_config *config = rte_eal_get_configuration();
        struct internal_config *internal_conf =
                eal_get_internal_configuration();

        /* checks if the machine is adequate */
        if (!rte_cpu_is_supported()) {
                rte_eal_init_alert("unsupported cpu type.");
                rte_errno = ENOTSUP;
                return -1;
        }

        if (!__atomic_compare_exchange_n(&run_once, &has_run, 1, 0,
                                        __ATOMIC_RELAXED, __ATOMIC_RELAXED)) {
                rte_eal_init_alert("already called initialization.");
                rte_errno = EALREADY;
                return -1;
        }

        thread_id = pthread_self();

        eal_reset_internal_config(internal_conf);

        /* clone argv to report out later in telemetry */
        eal_save_args(argc, argv);

        /* set log level as early as possible */
        eal_log_level_parse(argc, argv);

        if (rte_eal_cpu_init() < 0) {
                rte_eal_init_alert("Cannot detect lcores.");
                rte_errno = ENOTSUP;
                return -1;
        }

        fctret = eal_parse_args(argc, argv);
        if (fctret < 0) {
                rte_eal_init_alert("Invalid 'command line' arguments.");
                rte_errno = EINVAL;
                __atomic_store_n(&run_once, 0, __ATOMIC_RELAXED);
                return -1;
        }

        /* FreeBSD always uses legacy memory model */
        internal_conf->legacy_mem = true;

        if (eal_plugins_init() < 0) {
                rte_eal_init_alert("Cannot init plugins");
                rte_errno = EINVAL;
                __atomic_store_n(&run_once, 0, __ATOMIC_RELAXED);
                return -1;
        }

        if (eal_trace_init() < 0) {
                rte_eal_init_alert("Cannot init trace");
                rte_errno = EFAULT;
                __atomic_store_n(&run_once, 0, __ATOMIC_RELAXED);
                return -1;
        }

        if (eal_option_device_parse()) {
                rte_errno = ENODEV;
                __atomic_store_n(&run_once, 0, __ATOMIC_RELAXED);
                return -1;
        }

        if (rte_config_init() < 0) {
                rte_eal_init_alert("Cannot init config");
                return -1;
        }

        if (rte_eal_intr_init() < 0) {
                rte_eal_init_alert("Cannot init interrupt-handling thread");
                return -1;
        }

        if (rte_eal_alarm_init() < 0) {
                rte_eal_init_alert("Cannot init alarm");
                /* rte_eal_alarm_init sets rte_errno on failure. */
                return -1;
        }

        /* Put mp channel init before bus scan so that we can init the vdev
         * bus through mp channel in the secondary process before the bus scan.
         */
        if (rte_mp_channel_init() < 0 && rte_errno != ENOTSUP) {
                rte_eal_init_alert("failed to init mp channel");
                if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
                        rte_errno = EFAULT;
                        return -1;
                }
        }

        if (rte_bus_scan()) {
                rte_eal_init_alert("Cannot scan the buses for devices");
                rte_errno = ENODEV;
                __atomic_store_n(&run_once, 0, __ATOMIC_RELAXED);
                return -1;
        }

        /* if no EAL option "--iova-mode=<pa|va>", use bus IOVA scheme */
        if (internal_conf->iova_mode == RTE_IOVA_DC) {
                /* autodetect the IOVA mapping mode (default is RTE_IOVA_PA) */
                enum rte_iova_mode iova_mode = rte_bus_get_iommu_class();

                if (iova_mode == RTE_IOVA_DC)
                        iova_mode = RTE_IOVA_PA;
                rte_eal_get_configuration()->iova_mode = iova_mode;
        } else {
                rte_eal_get_configuration()->iova_mode =
                        internal_conf->iova_mode;
        }

        RTE_LOG(INFO, EAL, "Selected IOVA mode '%s'\n",
                rte_eal_iova_mode() == RTE_IOVA_PA ? "PA" : "VA");

        if (internal_conf->no_hugetlbfs == 0) {
                /* rte_config isn't initialized yet */
                ret = internal_conf->process_type == RTE_PROC_PRIMARY ?
                        eal_hugepage_info_init() :
                        eal_hugepage_info_read();
                if (ret < 0) {
                        rte_eal_init_alert("Cannot get hugepage information.");
                        rte_errno = EACCES;
                        __atomic_store_n(&run_once, 0, __ATOMIC_RELAXED);
                        return -1;
                }
        }

        if (internal_conf->memory == 0 && internal_conf->force_sockets == 0) {
                if (internal_conf->no_hugetlbfs)
                        internal_conf->memory = MEMSIZE_IF_NO_HUGE_PAGE;
                else
                        internal_conf->memory = eal_get_hugepage_mem_size();
        }

        if (internal_conf->vmware_tsc_map == 1) {
#ifdef RTE_LIBRTE_EAL_VMWARE_TSC_MAP_SUPPORT
                rte_cycles_vmware_tsc_map = 1;
                RTE_LOG (DEBUG, EAL, "Using VMWARE TSC MAP, "
                                "you must have monitor_control.pseudo_perfctr = TRUE\n");
#else
                RTE_LOG (WARNING, EAL, "Ignoring --vmware-tsc-map because "
                                "RTE_LIBRTE_EAL_VMWARE_TSC_MAP_SUPPORT is not set\n");
#endif
        }

        /* in secondary processes, memory init may allocate additional fbarrays
         * not present in primary processes, so to avoid any potential issues,
         * initialize memzones first.
         */
        if (rte_eal_memzone_init() < 0) {
                rte_eal_init_alert("Cannot init memzone");
                rte_errno = ENODEV;
                return -1;
        }

        if (rte_eal_memory_init() < 0) {
                rte_eal_init_alert("Cannot init memory");
                rte_errno = ENOMEM;
                return -1;
        }

        if (rte_eal_malloc_heap_init() < 0) {
                rte_eal_init_alert("Cannot init malloc heap");
                rte_errno = ENODEV;
                return -1;
        }

        if (rte_eal_tailqs_init() < 0) {
                rte_eal_init_alert("Cannot init tail queues for objects");
                rte_errno = EFAULT;
                return -1;
        }

        if (rte_eal_timer_init() < 0) {
                rte_eal_init_alert("Cannot init HPET or TSC timers");
                rte_errno = ENOTSUP;
                return -1;
        }

        eal_check_mem_on_local_socket();

        if (pthread_setaffinity_np(pthread_self(), sizeof(rte_cpuset_t),
                        &lcore_config[config->main_lcore].cpuset) != 0) {
                rte_eal_init_alert("Cannot set affinity");
                rte_errno = EINVAL;
                return -1;
        }
        __rte_thread_init(config->main_lcore,
                &lcore_config[config->main_lcore].cpuset);

        ret = eal_thread_dump_current_affinity(cpuset, sizeof(cpuset));

        RTE_LOG(DEBUG, EAL, "Main lcore %u is ready (tid=%p;cpuset=[%s%s])\n",
                config->main_lcore, thread_id, cpuset,
                ret == 0 ? "" : "...");

        RTE_LCORE_FOREACH_WORKER(i) {

                /*
                 * create communication pipes between main thread
                 * and children
                 */
                if (pipe(lcore_config[i].pipe_main2worker) < 0)
                        rte_panic("Cannot create pipe\n");
                if (pipe(lcore_config[i].pipe_worker2main) < 0)
                        rte_panic("Cannot create pipe\n");

                lcore_config[i].state = WAIT;

                /* create a thread for each lcore */
                ret = pthread_create(&lcore_config[i].thread_id, NULL,
                                     eal_thread_loop, NULL);
                if (ret != 0)
                        rte_panic("Cannot create thread\n");

                /* Set thread_name for aid in debugging. */
                snprintf(thread_name, sizeof(thread_name),
                                "lcore-worker-%d", i);
                rte_thread_setname(lcore_config[i].thread_id, thread_name);

                ret = pthread_setaffinity_np(lcore_config[i].thread_id,
                        sizeof(rte_cpuset_t), &lcore_config[i].cpuset);
                if (ret != 0)
                        rte_panic("Cannot set affinity\n");
        }

        /*
         * Launch a dummy function on all worker lcores, so that main lcore
         * knows they are all ready when this function returns.
         */
        rte_eal_mp_remote_launch(sync_func, NULL, SKIP_MAIN);
        rte_eal_mp_wait_lcore();

        /* initialize services so vdevs register service during bus_probe. */
        ret = rte_service_init();
        if (ret) {
                rte_eal_init_alert("rte_service_init() failed");
                rte_errno = -ret;
                return -1;
        }

        /* Probe all the buses and devices/drivers on them */
        if (rte_bus_probe()) {
                rte_eal_init_alert("Cannot probe devices");
                rte_errno = ENOTSUP;
                return -1;
        }

        /* initialize default service/lcore mappings and start running. Ignore
         * -ENOTSUP, as it indicates no service coremask passed to EAL.
         */
        ret = rte_service_start_with_defaults();
        if (ret < 0 && ret != -ENOTSUP) {
                rte_errno = -ret;
                return -1;
        }

        /*
         * Clean up unused files in runtime directory. We do this at the end of
         * init and not at the beginning because we want to clean stuff up
         * whether we are primary or secondary process, but we cannot remove
         * primary process' files because secondary should be able to run even
         * if primary process is dead.
         *
         * In no_shconf mode, no runtime directory is created in the first
         * place, so no cleanup needed.
         */
        if (!internal_conf->no_shconf && eal_clean_runtime_dir() < 0) {
                rte_eal_init_alert("Cannot clear runtime directory");
                return -1;
        }
        if (!internal_conf->no_telemetry) {
                int tlog = rte_log_register_type_and_pick_level(
                                "lib.telemetry", RTE_LOG_WARNING);
                if (tlog < 0)
                        tlog = RTE_LOGTYPE_EAL;
                if (rte_telemetry_init(rte_eal_get_runtime_dir(),
                                rte_version(),
                                &internal_conf->ctrl_cpuset, rte_log, tlog) != 0)
                        return -1;
        }

        eal_mcfg_complete();

        return fctret;
}

int
rte_eal_cleanup(void)
{
        struct internal_config *internal_conf =
                eal_get_internal_configuration();
        rte_service_finalize();
        rte_mp_channel_cleanup();
        /* after this point, any DPDK pointers will become dangling */
        rte_eal_memory_detach();
        rte_trace_save();
        eal_trace_fini();
        eal_cleanup_config(internal_conf);
        return 0;
}

int rte_eal_create_uio_dev(void)
{
        const struct internal_config *internal_conf =
                eal_get_internal_configuration();
        return internal_conf->create_uio_dev;
}

enum rte_intr_mode
rte_eal_vfio_intr_mode(void)
{
        return RTE_INTR_MODE_NONE;
}

void
rte_eal_vfio_get_vf_token(__rte_unused rte_uuid_t vf_token)
{
}

int rte_vfio_setup_device(__rte_unused const char *sysfs_base,
                      __rte_unused const char *dev_addr,
                      __rte_unused int *vfio_dev_fd,

                      __rte_unused struct vfio_device_info *device_info)
{
        return -1;
}

int rte_vfio_release_device(__rte_unused const char *sysfs_base,
                        __rte_unused const char *dev_addr,
                        __rte_unused int fd)
{
        return -1;
}

int rte_vfio_enable(__rte_unused const char *modname)
{
        return -1;
}

int rte_vfio_is_enabled(__rte_unused const char *modname)
{
        return 0;
}

int rte_vfio_noiommu_is_enabled(void)
{
        return 0;
}

int rte_vfio_clear_group(__rte_unused int vfio_group_fd)
{
        return 0;
}

int
rte_vfio_get_group_num(__rte_unused const char *sysfs_base,
                       __rte_unused const char *dev_addr,
                       __rte_unused int *iommu_group_num)
{
        return -1;
}

int
rte_vfio_get_container_fd(void)
{
        return -1;
}

int
rte_vfio_get_group_fd(__rte_unused int iommu_group_num)
{
        return -1;
}

int
rte_vfio_container_create(void)
{
        return -1;
}

int
rte_vfio_container_destroy(__rte_unused int container_fd)
{
        return -1;
}

int
rte_vfio_container_group_bind(__rte_unused int container_fd,
                __rte_unused int iommu_group_num)
{
        return -1;
}

int
rte_vfio_container_group_unbind(__rte_unused int container_fd,
                __rte_unused int iommu_group_num)
{
        return -1;
}

int
rte_vfio_container_dma_map(__rte_unused int container_fd,
                        __rte_unused uint64_t vaddr,
                        __rte_unused uint64_t iova,
                        __rte_unused uint64_t len)
{
        return -1;
}

int
rte_vfio_container_dma_unmap(__rte_unused int container_fd,
                        __rte_unused uint64_t vaddr,
                        __rte_unused uint64_t iova,
                        __rte_unused uint64_t len)
{
        return -1;
}