<netinet/icmp.h> defines both struct icmp and struct icmphdr. <linux/icmp.h> also defines struct icmphdr, with a similar structure (but, as usual, different field names) as the definition from <netinet/icmp.h>.
haddr : 用于存放从接收的数据包中提取的硬件地址; 1inteth_header_parse(structsk_buff *skb, u8 *haddr)2{3structethhdr *eth =eth_hdr(skb);4memcpy (haddr, eth->h_source, ETH_ALEN);//可知haddr中存放的是源MAC地址;5returnETH_ALEN;6} 7、在struct ethhdr中MAC地址为6个字节,并不是我们常见的...
typedef struct _icmphdr { BYTE i_type; //ICMP报文类型 BYTE i_code; // ICMP代码 USHORT i_cksum; //校验和 USHORT i_id; //标识符 USHORT i_seq; //序列号 ULONG timestamp; //时间戳 } IcmpHeader; // // IP选项头 // typedef struct _ipoptionhdr { unsigned char code; //选项类型 un...
尤其是对于icmp6_hdr这样的问题，has incompatible definitions in different translation units ...
struct icmp_hdr *icmphdr; ip4_addr_t iphdr_src; struct netif *netif;/* increase number of messages attempted to send */ MIB2_STATS_INC(mib2.icmpoutmsgs);/* ICMP header + IP header + 8 bytes of data */ q = pbuf_alloc(PBUF_IP, sizeof(struct icmp_echo_hdr) + IP_HLEN + ICMP...
tcphdr->window 16位滑动窗口大小,单位为字节,起始于确认序号字段指明的值,这个值是接收端期望接收的字节数,其最大值为63353字节。 TCP中的流量控制是同一个可变大小的滑动窗口来完成的。window域指定了从被确认的字节算起可以接收多少个字节。window=0也是合法的,相当于说到现在为止多达ack_seq-1个字节已经接收...
问struct ip与struct iphdr的区别EN1. 基本解释 typedef为C语言的关键字，作用是为一种数据类型...
// arp报文填入目的 ip } struct icmphdr { unsigned char type; unsigned char code; unsigned short check; unsigned short identifier; unsigned short seq; unsigned char data[32]; }; struct icmppkt { struct ethhdr eh; struct iphdr ip; struct icmphdr icmp; }; unsigned short in_cksum(unsigned ...
{ #指向各协议层 header 结构 struct tcphdr *th; struct udphdr *uh; struct icmphdr *icmph; struct igmphdr *igmph; struct iphdr *ipiph; struct ipv6hdr *ipv6h; unsigned char *raw; } h; union { struct iphdr *iph; struct ipv6hdr *ipv6h; struct arphdr *arph; unsigned char *...
struct cmsghdr 数据 原创 董哥的黑板报 2022-04-02 13:55:44 1952阅读 内核中用于数据接收的结构体structmsghdr(转) 内核中用于数据接收的结构体structmsghdr(转) 我们从一个实际的数据包发送的例子入手,来看看其发送的具体流程,以及过程中涉及到的相关数据结构。在我们的虚拟机上发送icmp回显请求包,ping另一台...