在dpdk20.11中获取端口的ip地址有啥简单的方法吗-DPDK中文网

可以使用DPDK提供的rte_eth_dev_get_addr_by_port函数来获取端口的IP地址。具体方法如下：

引入必要头文件

#include <rte_ethdev.h>

定义变量

uint16_t port_id = 0; // 端口号
struct rte_eth_dev_info dev_info; // 网卡信息
struct sockaddr_in* ip_addr; // IP地址

获取网卡信息

rte_eth_dev_info_get(port_id, &dev_info);

解析IP地址

/* 如果是IPv4地址 */
if (dev_info.ipv4.nb_q_per_pool > 0) {
    ip_addr = (struct sockaddr_in*)&dev_info.ipv4.addr_list[0].addr;
    printf("Port %u IPv4 address: %s\n", port_id,
            inet_ntoa(ip_addr->sin_addr));
}

/* 如果是IPv6地址 */
if (dev_info.ipv6.nb_q_per_pool > 0) {
    ip_addr = (struct sockaddr_in*)&dev_info.ipv6.addr_list[0].addr;
    char buf[INET6_ADDRSTRLEN];
    printf("Port %u IPv6 address: %s\n", port_id,
            inet_ntop(AF_INET6, &(ip_addr->sin_addr), buf, INET6_ADDRSTRLEN));
}

完整代码示例：

#include <rte_ethdev.h>
#include <netinet/in.h>
#include <arpa/inet.h>

void get_port_ip_address(uint16_t port_id) {
    struct rte_eth_dev_info dev_info;
    struct sockaddr_in* ip_addr;

    /* 获取网卡信息 */
    rte_eth_dev_info_get(port_id, &dev_info);

    /* 如果是IPv4地址 */
    if (dev_info.ipv4.nb_q_per_pool > 0) {
        ip_addr = (struct sockaddr_in*)&dev_info.ipv4.addr_list[0].addr;
        printf("Port %u IPv4 address: %s\n", port_id,
                inet_ntoa(ip_addr->sin_addr));
    }

    /* 如果是IPv6地址 */
    if (dev_info.ipv6.nb_q_per_pool > 0) {
        ip_addr = (struct sockaddr_in*)&dev_info.ipv6.addr_list[0].addr;
        char buf[INET6_ADDRSTRLEN];
        printf("Port %u IPv6 address: %s\n", port_id,
                inet_ntop(AF_INET6, &(ip_addr->sin_addr), buf, INET6_ADDRSTRLEN));
    }
}