/* * INET		An implementation of the TCP/IP protocol suite for the LINUX *		operating system.  INET is implemented using the  BSD Socket *		interface as the means of communication with the user level. * *		Definitions for the IP protocol. * * Version:	@(#)ip.h	1.0.2	04/28/93 * * Authors:	Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> * *		This program is free software; you can redistribute it and/or *		modify it under the terms of the GNU General Public License *		as published by the Free Software Foundation; either version *		2 of the License, or (at your option) any later version. */#ifndef _LINUX_IP_H#define _LINUX_IP_H#define IPOPT_END	0#define IPOPT_NOOP	1#define IPOPT_SEC	130#define IPOPT_LSRR	131#define IPOPT_SSRR	137#define IPOPT_RR	7#define IPOPT_SID	136#define IPOPT_TIMESTAMP	68struct timestamp {  unsigned char	len;  unsigned char ptr;  union {	unsigned char	flags:4,			overflow:4;	unsigned char	full_char;  } x;  unsigned long	data[9];};#define MAX_ROUTE	16struct route {  char		route_size;  char		pointer;  unsigned long route[MAX_ROUTE];};struct options {  struct route		record_route;  struct route		loose_route;  struct route		strict_route;  struct timestamp	tstamp;  unsigned short	security;  unsigned short	compartment;  unsigned short	handling;  unsigned short	stream;  unsigned		tcc;};struct iphdr {  unsigned char		ihl:4,			version:4;  unsigned char		tos;  unsigned short	tot_len;  unsigned short	id;  unsigned short	frag_off;  unsigned char		ttl;  unsigned char		protocol;  unsigned short	check;  unsigned long		saddr;  unsigned long		daddr;  /*The options start here. */};#endif	/* _LINUX_IP_H */