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/****************************************************************************
** File: ip.h
**
** Author: Mike Borella
**
** Comments: Generic IP header structure - an attempt at OS independence
**
*****************************************************************************/
#include <sys/types.h>
typedef struct _IPHdr
{
#if defined(WORDS_BIGENDIAN)
u_int8_t ip_v:4,
ip_hl:4;
#else
u_int8_t ip_hl:4,
ip_v:4;
#endif
u_int8_t ip_tos;
u_int16_t ip_len;
u_int16_t ip_id;
u_int16_t ip_off;
u_int8_t ip_ttl;
u_int8_t ip_p;
u_int16_t ip_csum;
struct in_addr ip_src;
struct in_addr ip_dst;
} IPHdr;
#define ICMP_NEXT_HEADER 1
#define IP_NEXT_HEADER 4
#define TCP_NEXT_HEADER 6
#define UDP_NEXT_HEADER 17
#define GRE_MEXT_HEADER 47
#define ESP_NEXT_HEADER 50
#define AH_NEXT_HEADER 51
void dump_ip(const u_char *, int);
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