学习spdk

#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <signal.h>
#include <pthread.h>
#include <fcntl.h>
#include <inttypes.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <rte_config.h>
#include <rte_eal.h>
#include <rte_pci.h>
#include <rte_bus_pci.h>
#include <rte_memory.h>
#include <spdk/nvme.h>
static bool g_shutdown = false;
static void sig_handler(int signum)
{
    if (signum == SIGINT || signum == SIGTERM) {
        g_shutdown = true;
    }
}
int main(int argc, char **argv)
{
    struct spdk_nvme_ctrlr *ctrlr;
    struct spdk_nvme_ns *ns;
    struct spdk_nvme_qpair *qpair;
    struct spdk_nvme_ctrlr_opts opts;
    struct spdk_pci_addr pci_addr;
    uint32_t nsid;
    int rc;
    signal(SIGINT, sig_handler);
    signal(SIGTERM, sig_handler);
    rc = rte_eal_init(argc, argv);
    if (rc < 0) {
        fprintf(stderr, "Failed to initialize EAL\n");
        return -1;
    }
    memset(&opts, 0, sizeof(opts));
    opts.num_io_queues = 4;
    ctrlr = spdk_nvme_connect(NULL, &opts, sizeof(opts));
    if (ctrlr == NULL) {
        fprintf(stderr, "Failed to connect to NVMe controller\n");
        return -1;
    }
    pci_addr = spdk_nvme_ctrlr_get_pci_controller(ctrlr)->addr;
    printf("Connected to NVMe controller at %!!(MISSING)x(MISSING):%!!(MISSING)x(MISSING):%!!(MISSING)x(MISSING).%!!(MISSING)x(MISSING)\n",
           pci_addr.domain, pci_addr.bus, pci_addr.devid, pci_addr.function);
    nsid = spdk_nvme_ctrlr_get_first_active_ns(ctrlr);
    if (nsid == 0xffffffff) {
        fprintf(stderr, "No active namespace found\n");
        spdk_nvme_detach(ctrlr);
        return -1;
    }
    ns = spdk_nvme_ctrlr_get_ns(ctrlr, nsid);
    if (ns == NULL) {
        fprintf(stderr, "Failed to get namespace %!!(MISSING)u(MISSING)\n", nsid);
        spdk_nvme_detach(ctrlr);
        return -1;
    }
    printf("Connected to NVMe namespace %!!(MISSING)u(MISSING)\n", nsid);
    qpair = spdk_nvme_ctrlr_alloc_io_qpair(ctrlr, NULL, 0);
    if (qpair == NULL) {
        fprintf(stderr, "Failed to allocate I/O queue pair\n");
        spdk_nvme_ns_detach(ns);
        spdk_nvme_detach(ctrlr);
        return -1;
    }
    while (!g_shutdown) {
        printf("Hello, World!\n");
        sleep(1);
    }
    spdk_nvme_ctrlr_free_io_qpair(qpair);
    spdk_nvme_ns_detach(ns);
    spdk_nvme_detach(ctrlr);
    return 0;
}

struct spdk_nvme_ctrlr *ctrlr;
    struct spdk_nvme_ns *ns;
    struct spdk_nvme_qpair *qpair;
    struct spdk_nvme_ctrlr_opts opts;
    struct spdk_pci_addr pci_addr;
    uint32_t nsid;
    int rc;
    signal(SIGINT, sig_handler);
    signal(SIGTERM, sig_handler);
    rc = rte_eal_init(argc, argv);
    if (rc < 0) {
        fprintf(stderr, "Failed to initialize EAL\n");
        return -1;
    }
    memset(&opts, 0, sizeof(opts));
    opts.num_io_queues = 4;
    ctrlr = spdk_nvme_connect(NULL, &opts, sizeof(opts));
    if (ctrlr == NULL) {
        fprintf(stderr, "Failed to connect to NVMe controller\n");
        return -1;
    }

pci_addr = spdk_nvme_ctrlr_get_pci_controller(ctrlr)->addr;
    printf("Connected to NVMe controller at %!!(MISSING)!(MISSING)x(MISSING):%!!(MISSING)!(MISSING)x(MISSING):%!!(MISSING)!(MISSING)x(MISSING).%!!(MISSING)!(MISSING)x(MISSING)\n",
           pci_addr.domain, pci_addr.bus, pci_addr.devid, pci_addr.function);

nsid = spdk_nvme_ctrlr_get_first_active_ns(ctrlr);
    if (nsid == 0xffffffff) {
        fprintf(stderr, "No active namespace found\n");
        spdk_nvme_detach(ctrlr);
        return -1;
    }
    ns = spdk_nvme_ctrlr_get_ns(ctrlr, nsid);
    if (ns == NULL) {
        fprintf(stderr, "Failed to get namespace %!!(MISSING)!(MISSING)u(MISSING)\n", nsid);
        spdk_nvme_detach(ctrlr);
        return -1;
    }
    printf("Connected to NVMe namespace %!!(MISSING)!(MISSING)u(MISSING)\n", nsid);

qpair = spdk_nvme_ctrlr_alloc_io_qpair(ctrlr, NULL, 0);
    if (qpair == NULL) {
        fprintf(stderr, "Failed to allocate I/O queue pair\n");
        spdk_nvme_ns_detach(ns);
        spdk_nvme_detach(ctrlr);
        return -1;
    }
    while (!g_shutdown) {
        printf("Hello, World!\n");
        sleep(1);
    }
    spdk_nvme_ctrlr_free_io_qpair(qpair);
    spdk_nvme_ns_detach(ns);
    spdk_nvme_detach(ctrlr);