由于题目没有具体要求传输的数据类型和内容，下面提供一份基本的 DPDK 网络通信代码示例，可根据实际需求进行修改。

发送方 A 代码：

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <rte_eal.h>
#include <rte_ethdev.h>
#include <rte_mbuf.h>

#define RTE_TEST_RX_DESC_DEFAULT 128
#define RTE_TEST_TX_DESC_DEFAULT 512
#define MBUF_CACHE_SIZE         256
#define BURST_SIZE              32

static uint16_t nb_ports;
static uint16_t portid;
static struct rte_eth_conf port_conf = {
    .rxmode = { .max_rx_pkt_len = ETHER_MAX_LEN }
};

int main(int argc, char **argv)
{
    int ret, i;
    struct rte_mbuf *mbuf[BURST_SIZE];
    struct rte_eth_dev_info dev_info;

    /* 初始化 EAL */
    ret = rte_eal_init(argc, argv);
    if (ret < 0) {
        rte_exit(EXIT_FAILURE, "Error: %s\n", rte_strerror(ret));
    }

    /* 获取网口数量 */
    nb_ports = rte_eth_dev_count_avail();
    if (nb_ports < 2) {
        rte_exit(EXIT_FAILURE, "Error: at least 2 Ethernet ports are required\n");
    }

    /* 配置以太网口 0 和 1 */
    ret = rte_eth_dev_configure(0, 1, 1, &port_conf);
    if (ret < 0) {
        rte_exit(EXIT_FAILURE, "Error: cannot configure eth0: %s\n",
                rte_strerror(ret));
    }
    ret = rte_eth_dev_configure(1, 1, 1, &port_conf);
    if (ret < 0) {
        rte_exit(EXIT_FAILURE, "Error: cannot configure eth1: %s\n",
                rte_strerror(ret));
    }

    /* 启动以太网口 0 和 1 */
    ret = rte_eth_dev_start(0);
    if (ret < 0) {
        rte_exit(EXIT_FAILURE, "Error: cannot start eth0: %s\n",
                rte_strerror(-ret));
    }
    ret = rte_eth_dev_start(1);
    if (ret < 0) {
        rte_exit(EXIT_FAILURE, "Error: cannot start eth1: %s\n",
                rte_strerror(-ret));
    }

    /* 获取网卡信息 */
    memset(&dev_info, 0, sizeof(dev_info));
    rte_eth_dev_info_get(1, &dev_info);

    /* 构造要发送的数据包 */
    for (i = 0; i < BURST_SIZE; i++) {
        mbuf[i] = rte_pktmbuf_alloc(dev_info.tx_pkt_burst ? NULL : dev_info.
            dev_private->socket_id, MBUF_CACHE_SIZE);
        if (mbuf[i] == NULL) {
            rte_exit(EXIT_FAILURE, "Error: failed to allocate mbuf\n");
        }
        mbuf[i]->data_len = mbuf[i]->pkt_len = 64;
        memset(rte_pktmbuf_mtod(mbuf[i], char *), 0xA5, 64);
        struct ether_hdr *eth_hdr = rte_pktmbuf_mtod(mbuf[i], struct ether_hdr *);
        ether_addr_copy((struct ether_addr *)"\x3c\xec\xef\x8d\x32\xde", &eth_hdr->s_addr); // 发送方 MAC 地址
        ether_addr_copy((struct ether_addr *)"\x9c\x69\xb4\x60\xa8\xb8", &eth_hdr->d_addr); // 接收方 MAC 地址
        mbuf[i]->pkt_len = sizeof(struct ether_hdr) + 64;
    }

    /* 发送数据包 */
    for (i = 0; i < BURST_SIZE; i += ret) {
        ret = rte_eth_tx_burst(0, 0, &mbuf[i], BURST_SIZE);
        if (ret < 0) {
            rte_pktmbuf_free(mbuf[i]);
        }
    }

    /* 关闭网卡 */
    rte_eth_dev_stop(portid);

    return 0;
}

接收方 B 代码：

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <rte_eal.h>
#include <rte_ethdev.h>
#include <rte_mbuf.h>

#define RTE_TEST_RX_DESC_DEFAULT 128
#define RTE_TEST_TX_DESC_DEFAULT 512
#define MBUF_CACHE_SIZE         256
#define BURST_SIZE              32

static uint16_t nb_ports;
static uint16_t portid;
static struct rte_eth_conf port_conf = {
    .rxmode = { .max_rx_pkt_len = ETHER_MAX_LEN }
};

int main(int argc, char **argv)
{
    int ret, i;
    struct rte_mbuf *mbuf[BURST_SIZE];
    struct rte_eth_dev_info dev_info;

    /* 初始化 EAL */
    ret = rte_eal_init(argc, argv);
    if (ret < 0) {
        rte_exit(EXIT_FAILURE, "Error: %s\n", rte_strerror(ret));
    }

    /* 获取网口数量 */
    nb_ports = rte_eth_dev_count_avail();
    if (nb_ports < 2) {
        rte_exit(EXIT_FAILURE, "Error: at least 2 Ethernet ports are required\n");
    }

    /* 配置以太网口 0 和 1 */
    ret = rte_eth_dev_configure(0, 1, 1, &port_conf);
    if (ret < 0) {
        rte_exit(EXIT_FAILURE, "Error: cannot configure eth0: %s\n",
                rte_strerror(ret));
    }
    ret = rte_eth_dev_configure(1, 1, 1, &port_conf);
    if (ret < 0) {
        rte_exit(EXIT_FAILURE, "Error: cannot configure eth1: %s\n",
                rte_strerror(ret));
    }

    /* 启动以太网口 0 和 1 */
    ret = rte_eth_dev_start(0);
    if (ret < 0) {
        rte_exit(EXIT_FAILURE, "Error: cannot start eth0: %s\n",
                rte_strerror(-ret));
    }
    ret = rte_eth_dev_start(1);
    if (ret < 0) {
        rte_exit(EXIT_FAILURE, "Error: cannot start eth1: %s\n",
                rte_strerror(-ret));
    }

    /* 获取网卡信息 */
    memset(&dev_info, 0, sizeof(dev_info));
    rte_eth_dev_info_get(0, &dev_info);

    /* 接收数据包 */
    for (i = 0; i < BURST_SIZE; i += ret) {
        ret = rte_eth_rx_burst(0, 0, &mbuf[i], BURST_SIZE);
        if (ret == 0) {
            continue;
        }
        for (int j = 0; j < ret; j++) {
            struct ether_hdr *eth_hdr = rte_pktmbuf_mtod(mbuf[j], struct ether_hdr *);
            ether_addr_copy(&eth_hdr->d_addr, &eth_hdr->s_addr); // 交换 MAC 地址
            ether_addr_copy((struct ether_addr *)"\x3c\xec\xef\x8d\x32\xde", &eth_hdr->d_addr); // 发送方 MAC 地址
            ether_addr_copy((struct ether_addr *)"\x9c\x69\xb4\x60\xa8\xb8", &eth_hdr->s_addr); // 接收方 MAC 地址
            int ret2 = rte_eth_tx_burst(0, 0, &mbuf[j], 1); // 发送数据包
            if (ret2 < 0) {
                rte_pktmbuf_free(mbuf[j]);
            }
        }
    }

    /* 关闭网卡 */
    rte_eth_dev_stop(portid);

    return 0;
}