“struct rte_ether_hdr” 是一个数据结构,用于表示以太网帧的头部。它是由DPDK(Data Plane Development Kit)网络库定义的,用于高性能网络应用程序开发。 在C语言中,结构体的定义如下: structrte_ether_hdr{ uint8_tdst_addr[ETHER_ADDR_LEN]; uint8_tsrc_addr[ETHER_ADDR_LEN]; uint16_tether_type; }; ...
rte_pktmbuf_mtod_offset(mbufs[i],structrte_ipv4_hdr*,sizeof(structrte_ether_hdr)); if(iphdr->next_proto_id==IPPROTO_UDP){// 检查是否为UDP协议 // 正确获取UDP报文头 structrte_udp_hdr*udphdr= (structrte_udp_hdr*)((uint8_t*)iphdr+sizeof(structrte_ipv4_hdr)); uint16_tlength=udph...
} __attribute__((packed)); struct ether_header { u_int8_t ether_dhost[ETH_ALEN]; // destination eth addr u_int8_t ether_shost[ETH_ALEN]; // source ether addr u_int16_t ether_type; // packet type ID field } __attribute__ ((__packed__)); ***IP的结构*** struct iphdr ...
intipv4_hdrlen = (iph->version_ihl & RTE_IPV4_HDR_IHL_MASK) <<2; pkt_len= ntcp_payload_len + ipv4_hdrlen + (tcph->data_off >>4) *4; rte_pktmbuf_data_len(mbuf)= rte_pktmbuf_pkt_len(mbuf) =pkt_len+ RTE_ETHER_HDR_LEN; Mbuf 概述 DPDK mbuf实现了message buffer,可以存储报文...
staticstructrte_eth_conf port_conf ={ .rxmode={ .mq_mode=ETH_MQ_RX_NONE, .max_rx_pkt_len=ETHER_MAX_LEN, .split_hdr_size=0, .header_split=0,/**< Header Split disabled*/.hw_ip_checksum=0,/**<IP checksum offload enabled*/.hw_vlan_filter=0,/**<VLAN filtering disabled*/.jumbo...
structether_header { u_int8_t ether_dhost[ETH_ALEN]; // destination eth addr u_int8_t ether_shost[ETH_ALEN]; // source ether addr u_int16_t ether_type; // packet type ID field } __attribute__ ((__packed__)); ***IP的结构*** structiphdr { #if __BYTE_ORDER == __LITT...
* would have RTE_PTYPE_L2_ETHER and not RTE_PTYPE_L2_VLAN because the * vlan is stripped from the data. */ RTE_STD_C11 union{ uint32_tpacket_type;/**< L2/L3/L4 and tunnel information. */ __extension__ struct{ uint8_tl2_type:4;/**< (Outer) L2 type. */ ...
struct ether_header { u_int8_t ether_dhost[ETH_ALEN]; // destination eth addr u_int8_t ether_shost[ETH_ALEN]; // source ether addr u_int16_t ether_type; // packet type ID field } __attribute__ ((__packed__)); ***IP的结构*** struct iphdr { #if __BYTE_ORDER == __...
structether_header { u_int8_t ether_dhost[ETH_ALEN]; // destination eth addr u_int8_t ether_shost[ETH_ALEN]; // source ether addr u_int16_t ether_type; // packet type ID field } __attribute__ ((__packed__)); ***IP的结构*** structiphdr { #if __BYTE_ORDER == __LITT...
这段代码的作用是在内存池中重新分配一个 rte_mbuf 结构体,并设置其相关属性。 ustack_send()函数接收三个参数:mbuf_pool是一个指向 rte_mempool 结构体的指针,表示内存池;data是一个指向无符号字符型的数据缓冲区;length是数据长度(uint16_t 类型)。