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/*

 * 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

#include <asm/byteorder.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 68

#define MAXTTL          255

struct timestamp {

        __u8    len;

        __u8    ptr;

#if defined(__LITTLE_ENDIAN_BITFIELD)

        __u8    flags:4,

                overflow:4;

#elif defined(__BIG_ENDIAN_BITFIELD)

        __u8    overflow:4,

                flags:4;

#else

#error  "Please fix <asm/byteorder.h>"

#endif                                          

        __u32   data[9];

};

#define MAX_ROUTE       16

struct route {

  char          route_size;

  char          pointer;

  unsigned long route[MAX_ROUTE];

};

#define IPOPT_OPTVAL 0

#define IPOPT_OLEN   1

#define IPOPT_OFFSET 2

#define IPOPT_MINOFF 4

#define MAX_IPOPTLEN 40

#define IPOPT_NOP IPOPT_NOOP

#define IPOPT_EOL IPOPT_END

#define IPOPT_TS  IPOPT_TIMESTAMP

#define IPOPT_TS_TSONLY         0                /* timestamps only */

#define IPOPT_TS_TSANDADDR      1               /* timestamps and addresses */

#define IPOPT_TS_PRESPEC        3               /* specified modules only */

struct options {

  __u32         faddr;                          /* Saved first hop address */

  unsigned char optlen;

  unsigned char srr;

  unsigned char rr;

  unsigned char ts;

  unsigned char is_setbyuser:1,                 /* Set by setsockopt?                   */

                is_data:1,                      /* Options in __data, rather than skb   */

                is_strictroute:1,               /* Strict source route                  */

                srr_is_hit:1,                   /* Packet destination addr was our one  */

                is_changed:1,                   /* IP checksum more not valid           */

                rr_needaddr:1,                  /* Need to record addr of outgoing dev  */

                ts_needtime:1,                  /* Need to record timestamp             */

                ts_needaddr:1;                  /* Need to record addr of outgoing dev  */

  unsigned char __pad1;

  unsigned char __pad2;

  unsigned char __pad3;

  unsigned char __data[0];

};

struct iphdr {

#if defined(__LITTLE_ENDIAN_BITFIELD)

        __u8    ihl:4,

                version:4;

#elif defined (__BIG_ENDIAN_BITFIELD)

        __u8    version:4,

                ihl:4;

#else

#error  "Please fix <asm/byteorder.h>"

#endif

        __u8    tos;

        __u16   tot_len;

        __u16   id;

        __u16   frag_off;

        __u8    ttl;

        __u8    protocol;

        __u16   check;

        __u32   saddr;

        __u32   daddr;

        /*The options start here. */

};

#endif  /* _LINUX_IP_H */