ipv4_hdr = (struct rte_ipv4_hdr *)l3_hdr;
ipv4_hdr->hdr_checksum = 0;
ol_flags |= PKT_TX_IPV4;
ol_flags |= PKT_TX_IP_CKSUM;
info->l3_len = sizeof(struct rte_ipv4_hdr);
l4_proto = ipv4_hdr->next_proto_id;
ipv4_hdr = (struct rte_ipv4_hdr *)l3_hdr;
ipv4_hdr->hdr_checksum = 0;
ol_flags |= PKT_TX_IPV4;
ol_flags |= PKT_TX_IP_CKSUM;
info->l3_len = sizeof(struct rte_ipv4_hdr);
l4_proto = ipv4_hdr->next_proto_id;