| 1 |
786 |
skrzyp |
//==========================================================================
|
| 2 |
|
|
//
|
| 3 |
|
|
// include/netinet6_ipv6.h
|
| 4 |
|
|
//
|
| 5 |
|
|
//
|
| 6 |
|
|
//
|
| 7 |
|
|
//==========================================================================
|
| 8 |
|
|
// ####BSDALTCOPYRIGHTBEGIN####
|
| 9 |
|
|
// -------------------------------------------
|
| 10 |
|
|
// Portions of this software may have been derived from OpenBSD
|
| 11 |
|
|
// or other sources, and if so are covered by the appropriate copyright
|
| 12 |
|
|
// and license included herein.
|
| 13 |
|
|
// -------------------------------------------
|
| 14 |
|
|
// ####BSDALTCOPYRIGHTEND####
|
| 15 |
|
|
//==========================================================================
|
| 16 |
|
|
//#####DESCRIPTIONBEGIN####
|
| 17 |
|
|
//
|
| 18 |
|
|
// Author(s): gthomas
|
| 19 |
|
|
// Contributors: gthomas
|
| 20 |
|
|
// Date: 2000-01-10
|
| 21 |
|
|
// Purpose:
|
| 22 |
|
|
// Description:
|
| 23 |
|
|
//
|
| 24 |
|
|
//
|
| 25 |
|
|
//####DESCRIPTIONEND####
|
| 26 |
|
|
//
|
| 27 |
|
|
//==========================================================================
|
| 28 |
|
|
|
| 29 |
|
|
|
| 30 |
|
|
/*
|
| 31 |
|
|
%%% copyright-nrl-95
|
| 32 |
|
|
This software is Copyright 1995-1998 by Randall Atkinson, Ronald Lee,
|
| 33 |
|
|
Daniel McDonald, Bao Phan, and Chris Winters. All Rights Reserved. All
|
| 34 |
|
|
rights under this copyright have been assigned to the US Naval Research
|
| 35 |
|
|
Laboratory (NRL). The NRL Copyright Notice and License Agreement Version
|
| 36 |
|
|
1.1 (January 17, 1995) applies to this software.
|
| 37 |
|
|
You should have received a copy of the license with this software. If you
|
| 38 |
|
|
didn't get a copy, you may request one from <license@ipv6.nrl.navy.mil>.
|
| 39 |
|
|
|
| 40 |
|
|
*/
|
| 41 |
|
|
|
| 42 |
|
|
#ifndef _NETINET6_IPV6_H
|
| 43 |
|
|
#define _NETINET6_IPV6_H 1
|
| 44 |
|
|
|
| 45 |
|
|
#define IPV6VERSION 6
|
| 46 |
|
|
|
| 47 |
|
|
/*
|
| 48 |
|
|
* Header structures.
|
| 49 |
|
|
*/
|
| 50 |
|
|
|
| 51 |
|
|
struct ipv6
|
| 52 |
|
|
{
|
| 53 |
|
|
uint32_t ipv6_versfl; /* Version and flow label word. */
|
| 54 |
|
|
|
| 55 |
|
|
uint16_t ipv6_length; /* Datagram length (not including the length
|
| 56 |
|
|
of this header). */
|
| 57 |
|
|
uint8_t ipv6_nexthdr; /* Next header type. */
|
| 58 |
|
|
uint8_t ipv6_hoplimit; /* Hop limit. */
|
| 59 |
|
|
|
| 60 |
|
|
struct in6_addr ipv6_src; /* Source address. */
|
| 61 |
|
|
struct in6_addr ipv6_dst; /* Destination address. */
|
| 62 |
|
|
};
|
| 63 |
|
|
|
| 64 |
|
|
#if __linux__
|
| 65 |
|
|
#include <endian.h>
|
| 66 |
|
|
#else /* __linux__ */
|
| 67 |
|
|
#include <machine/endian.h>
|
| 68 |
|
|
#endif /* __linux__ */
|
| 69 |
|
|
|
| 70 |
|
|
struct ipv6hdr {
|
| 71 |
|
|
#if BYTE_ORDER == LITTLE_ENDIAN
|
| 72 |
|
|
uint8_t ipv6_priority:4; /* going away? */
|
| 73 |
|
|
uint8_t ipv6_version:4;
|
| 74 |
|
|
uint32_t ipv6_flowid:24;
|
| 75 |
|
|
#elif BYTE_ORDER == BIG_ENDIAN
|
| 76 |
|
|
uint32_t ipv6_flowid:24;
|
| 77 |
|
|
uint8_t ipv6_priority:4; /* going away? */
|
| 78 |
|
|
uint8_t ipv6_version:4;
|
| 79 |
|
|
#else
|
| 80 |
|
|
#error "Don't know what endian to use."
|
| 81 |
|
|
#endif
|
| 82 |
|
|
uint16_t ipv6_len;
|
| 83 |
|
|
uint8_t ipv6_nextheader;
|
| 84 |
|
|
uint8_t ipv6_hoplimit;
|
| 85 |
|
|
struct in6_addr ipv6_src; /* source address */
|
| 86 |
|
|
struct in6_addr ipv6_dst; /* destination address */
|
| 87 |
|
|
};
|
| 88 |
|
|
|
| 89 |
|
|
/*
|
| 90 |
|
|
* Macros and defines for header fields, and values thereof.
|
| 91 |
|
|
* Assume things are in host order for these three macros.
|
| 92 |
|
|
*/
|
| 93 |
|
|
|
| 94 |
|
|
#define IPV6_VERSION(h) ((h)->ipv6_versfl >> 28)
|
| 95 |
|
|
#define IPV6_PRIORITY(h) (((h)->ipv6_versfl & 0x0f000000) >> 24)
|
| 96 |
|
|
#define IPV6_FLOWID(h) ((h)->ipv6_versfl & 0x00ffffff)
|
| 97 |
|
|
|
| 98 |
|
|
#define MAXHOPLIMIT 64
|
| 99 |
|
|
#define IPV6_MINMTU 576
|
| 100 |
|
|
|
| 101 |
|
|
/*
|
| 102 |
|
|
* Other IPv6 header definitions.
|
| 103 |
|
|
*/
|
| 104 |
|
|
|
| 105 |
|
|
/* Fragmentation header & macros for it. NOTE: Host order assumption. */
|
| 106 |
|
|
|
| 107 |
|
|
struct ipv6_fraghdr
|
| 108 |
|
|
{
|
| 109 |
|
|
uint8_t frag_nexthdr; /* Next header type. */
|
| 110 |
|
|
uint8_t frag_reserved;
|
| 111 |
|
|
uint16_t frag_bitsoffset; /* More bit and fragment offset. */
|
| 112 |
|
|
uint32_t frag_id; /* Fragment identifier. */
|
| 113 |
|
|
};
|
| 114 |
|
|
|
| 115 |
|
|
#define FRAG_MOREMASK 0x1
|
| 116 |
|
|
#define FRAG_OFFMASK 0xFFF8
|
| 117 |
|
|
#define FRAG_MORE_BIT(fh) ((fh)->frag_bitsoffset & FRAG_MOREMASK)
|
| 118 |
|
|
#define FRAG_OFFSET(fh) ((fh)->frag_bitsoffset & FRAG_OFFMASK)
|
| 119 |
|
|
|
| 120 |
|
|
/* Source routing header. Host order assumption for macros. */
|
| 121 |
|
|
|
| 122 |
|
|
struct ipv6_srcroute0
|
| 123 |
|
|
{
|
| 124 |
|
|
uint8_t i6sr_nexthdr; /* Next header type. */
|
| 125 |
|
|
uint8_t i6sr_len; /* RH len in 8-byte addrs, !incl this structure */
|
| 126 |
|
|
uint8_t i6sr_type; /* Routing type, should be 0 */
|
| 127 |
|
|
uint8_t i6sr_left; /* Segments left */
|
| 128 |
|
|
uint32_t i6sr_reserved; /* 8 bits of reserved padding. */
|
| 129 |
|
|
};
|
| 130 |
|
|
|
| 131 |
|
|
#define I6SR_BITMASK(i6sr) ((i6sr)->i6sr_reserved & 0xffffff)
|
| 132 |
|
|
|
| 133 |
|
|
/* Options header. For "ignoreable" options. */
|
| 134 |
|
|
|
| 135 |
|
|
struct ipv6_opthdr
|
| 136 |
|
|
{
|
| 137 |
|
|
uint8_t oh_nexthdr; /* Next header type. */
|
| 138 |
|
|
uint8_t oh_extlen; /* Header extension length. */
|
| 139 |
|
|
uint8_t oh_data[6]; /* Option data, may be reserved for
|
| 140 |
|
|
alignment purposes. */
|
| 141 |
|
|
};
|
| 142 |
|
|
|
| 143 |
|
|
#define OPT_PAD1 0
|
| 144 |
|
|
#define OPT_PADN 1
|
| 145 |
|
|
#define OPT_JUMBO 194
|
| 146 |
|
|
|
| 147 |
|
|
struct ipv6_option
|
| 148 |
|
|
{
|
| 149 |
|
|
uint8_t opt_type; /* Option type. */
|
| 150 |
|
|
uint8_t opt_datalen; /* Option data length. */
|
| 151 |
|
|
uint8_t opt_data[1]; /* Option data. */
|
| 152 |
|
|
};
|
| 153 |
|
|
#endif /* _NETINET6_IPV6_H */
|
