基于l2fwd打印出的ip不对，请问代码有问题吗，函数如下

Question

/*

                * Read packet from RX queues

                */

            for (i = 0; i < qconf->n_rx_port; i++) {

 

                portid = qconf->rx_port_list[i];

                nb_rx = rte_eth_rx_burst(portid, 0,

                                            mbufs, MAX_PKT_BURST);

 

                port_statistics[portid].rx += nb_rx;

                char tmp_buf[64];

                for (j = 0; j < nb_rx; j++) {

                        struct rte_mbuf *pkt = mbufs[i];

 

                        eth_hdr = rte_pktmbuf_mtod(pkt,struct ether_hdr *);

                        ipv4_hdr = rte_pktmbuf_mtod_offset(pkt, struct ipv4_hdr *,sizeof(struct ether_hdr));

 

                        uint32_t_to_char(rte_bswap32(ipv4_hdr->src_addr), &a, &b, &c, &d);

                        printf("Packet Src:%hhu.%hhu.%hhu.%hhu \n", a, b, c, d);

                        uint32_t_to_char(rte_bswap32(ipv4_hdr->dst_addr), &a, &b, &c, &d);

                        printf("Dst:%hhu.%hhu.%hhu.%hhu \n", a, b, c, d);

                        printf("Src port:%hu,Dst port:%hu \n",

                                rte_bswap16(*(uint16_t *)(ipv4_hdr + 1)),

                                rte_bswap16(*((uint16_t *)(ipv4_hdr + 1) + 1)));

                        printf("total length: %d\n",ipv4_hdr->total_length);

                        printf("=================================================================\n");

 

                        rte_pktmbuf_free(pkt);

 

                    }

            }

Answer 1

struct rte_mbuf *pkt = mbufs[i]; 写错了吧， 改成 struct rte_mbuf *pkt = mbufs[j]; 试一试

Comments

还是不行呢，解析出来与发包的ip对不上

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方便留下邮箱吗？如果不介意，我之前写了一个你可以验证一下可以用不可以

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哇，那再好不过了，真的很谢谢你哦～ 邮箱：[email protected]

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发送不成功，被对方服务器退回

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大佬再试试这个，[email protected]

Answer 2

1.先打印一下ipv4_hdr的20个字节，核查一下是否准确；

2.如果准确，请核查调用的uint32_t_to_char、rte_bswap32这些接口是否有问题

Comments

谢谢～已解决。原因是帧报文后面还带有4个字节的vlan tag。