Declaration for ip from NetLib:netinet.h.ip
(Struct)
/*
* Structure of an IP header
*/
struct ip {
u_int ip_hl : 4; /* Header length */
u_int ip_v : 4; /* Protocol version */
u_int ip_tos : 8; /* Type of service */
int ip_len : 16; /* Packet length - short not u_short */
u_short ip_id; /* Packet ID */
short ip_off; /* Fragment offset */
#define IP_DF 0x4000 /* Don't fragment flag */
#define IP_MF 0x2000 /* More fragments flag */
#define IP_OFFMASK 0x1fff /* mask for fragmenting bits */
u_char ip_ttl; /* Time-to-live */
u_char ip_p; /* Protocol */
u_short ip_sum; /* Checksum */
struct in_addr ip_src; /* Source address */
struct in_addr ip_dst; /* Destination address */
};
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