1__be16 eth_type_trans(structsk_buff *skb,structnet_device *dev)2{3structethhdr *eth;45skb->dev =dev;6eth =eth_hdr(skb);78if(netdev_uses_dsa_tags(dev))9returnhtons(ETH_P_DSA);1011if(netdev_uses_trailer_tags(dev))12returnhtons(ETH_P_TRAILER);1314if( ntohs(eth->h_proto) >=...
int eth_header_parse(struct sk_buff *skb, u8 *haddr) EXPORT_SYMBOL(eth_header_parse); skb : 接收到的数据包; haddr : 用于存放从接收的数据包中提取的硬件地址; AI检测代码解析 inteth_header_parse(structsk_buff*skb,u8*haddr){structethhdr*eth=eth_hdr(skb);memcpy(haddr,eth->h_source,ETH_A...
unsigned char h_dest[ETH_ALEN]; unsigned char h_source[ETH_ALEN]; __be16 h_proto; } __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; // p...
length是原始数据部分的长度,sizeof()函数用于获取结构体rte_ether_hdr、rte_ipv4_hdr和rte_udp_hdr的大小(以字节为单位),然后将它们累加到length上得到最终的总长度。 struct rte_mbuf *mbuf = rte_pktmbuf_alloc(mbuf_pool);这一行使用 DPDK 提供的函数rte_pktmbuf_alloc()从指定的内存池中分配一个 RTE ...
const struct ethhdr *eth = skb_eth_hdr(skb); /* send to other bridge ports directly */ if (is_multicast_ether_addr(eth->h_dest)) { skb_reset_mac_header(skb); macvlan_broadcast(skb, port, dev, MACVLAN_MODE_BRIDGE); goto xmit_world; ...
mbuf对应的物理地址,一般mbuf物理地址在初始化mempool的时候就设置了,在mbuf对应obj的head里面存放,如下结构体的objhdr里面的iova/physaddr structrte_mempool_objhdr { STAILQ_ENTRY(rte_mempool_objhdr) next;/**< Next in list.*/structrte_mempool *mp;/**< The mempool owning the object.*/RTE_STD_C11...
enumrte_eth_rx_mq_mode mq_mode;/**< Select Rx multi-queue mode: none(0), RSS (1), DCB(2) or VMDQ(3). */ uint16_tmax_rx_pkt_len;/**< Stop receiving after size of this packet is received. */ uint16_tsplit_hdr_size;/**< Split header, e.g. for VLAN header. */ ...
这是收到包的网络设备的指针。如果包是本地生成的,这个值为NULL。对以太网设备来说,这个值由eth_type_trans初始化,它主要被流量控制代码使用。 sk_buff->h sk_buff->nh sk_buff->mac 这些是指向TCP/IP各层协议头的指针:h指向L4(传输层),nh指向L3(网络层),mac指向L2(数据链路层)。每个指针的类型都是一...
structtcphdr*th;@nh: Network layer header structudphdr*uh; structicmphdr*icmph; structigmphdr*igmph; structiphdr*ipiph; structipv6hdr*ipv6h; unsigned char *raw; }h;@h: Transport layer header传输层头标(tcp,udp,icmp,igmp,spx,raw) union { structiphdr*iph; structipv6hdr*ipv6h; struc...
__struct_group(ethtool_link_settings_hdr, hdr, /* no attrs */, __u32 cmd; __u32 speed; __u8 duplex; __u8 port; __u8 phy_address; __u8 autoneg; __u8 mdio_support; __u8 eth_tp_mdix; __u8 eth_tp_mdix_ctrl; __s8 link_mode_masks_nwords; __u8 transceiver; __u8 master...