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annotate packages/net/tcpip/current/include/netinet6/ipv6.h @ 1777:c16341b1bac6 default tip

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* Added execute permissions to files missed in conversion from CVS
author alexs
date Mon, 12 Oct 2009 02:26:09 +0100
parents e0c0827131d1
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
97
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1 //==========================================================================
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2 //
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3 // include/netinet6_ipv6.h
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4 //
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5 //
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6 //
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7 //==========================================================================
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8 //####BSDCOPYRIGHTBEGIN####
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9 //
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10 // -------------------------------------------
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11 //
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12 // Portions of this software may have been derived from OpenBSD or other sources,
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13 // and are covered by the appropriate copyright disclaimers included herein.
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14 //
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15 // -------------------------------------------
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16 //
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17 //####BSDCOPYRIGHTEND####
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18 //==========================================================================
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19 //#####DESCRIPTIONBEGIN####
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20 //
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21 // Author(s): gthomas
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22 // Contributors: gthomas
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23 // Date: 2000-01-10
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24 // Purpose:
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25 // Description:
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26 //
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27 //
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28 //####DESCRIPTIONEND####
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29 //
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30 //==========================================================================
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31
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32
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33 /*
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34 %%% copyright-nrl-95
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35 This software is Copyright 1995-1998 by Randall Atkinson, Ronald Lee,
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36 Daniel McDonald, Bao Phan, and Chris Winters. All Rights Reserved. All
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37 rights under this copyright have been assigned to the US Naval Research
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38 Laboratory (NRL). The NRL Copyright Notice and License Agreement Version
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39 1.1 (January 17, 1995) applies to this software.
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40 You should have received a copy of the license with this software. If you
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41 didn't get a copy, you may request one from <license@ipv6.nrl.navy.mil>.
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42
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43 */
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44
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45 #ifndef _NETINET6_IPV6_H
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46 #define _NETINET6_IPV6_H 1
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47
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48 #define IPV6VERSION 6
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49
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50 /*
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51 * Header structures.
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52 */
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53
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54 struct ipv6
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55 {
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56 uint32_t ipv6_versfl; /* Version and flow label word. */
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57
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58 uint16_t ipv6_length; /* Datagram length (not including the length
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59 of this header). */
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60 uint8_t ipv6_nexthdr; /* Next header type. */
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61 uint8_t ipv6_hoplimit; /* Hop limit. */
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62
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63 struct in6_addr ipv6_src; /* Source address. */
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64 struct in6_addr ipv6_dst; /* Destination address. */
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65 };
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66
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67 #if __linux__
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68 #include <endian.h>
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69 #else /* __linux__ */
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70 #include <machine/endian.h>
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71 #endif /* __linux__ */
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72
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73 struct ipv6hdr {
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74 #if BYTE_ORDER == LITTLE_ENDIAN
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75 uint8_t ipv6_priority:4; /* going away? */
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76 uint8_t ipv6_version:4;
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77 uint32_t ipv6_flowid:24;
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78 #elif BYTE_ORDER == BIG_ENDIAN
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79 uint32_t ipv6_flowid:24;
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80 uint8_t ipv6_priority:4; /* going away? */
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81 uint8_t ipv6_version:4;
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82 #else
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83 #error "Don't know what endian to use."
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84 #endif
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85 uint16_t ipv6_len;
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86 uint8_t ipv6_nextheader;
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87 uint8_t ipv6_hoplimit;
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88 struct in6_addr ipv6_src; /* source address */
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89 struct in6_addr ipv6_dst; /* destination address */
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90 };
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91
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92 /*
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93 * Macros and defines for header fields, and values thereof.
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94 * Assume things are in host order for these three macros.
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95 */
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96
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97 #define IPV6_VERSION(h) ((h)->ipv6_versfl >> 28)
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98 #define IPV6_PRIORITY(h) (((h)->ipv6_versfl & 0x0f000000) >> 24)
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99 #define IPV6_FLOWID(h) ((h)->ipv6_versfl & 0x00ffffff)
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100
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101 #define MAXHOPLIMIT 64
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102 #define IPV6_MINMTU 576
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103
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104 /*
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105 * Other IPv6 header definitions.
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106 */
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107
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108 /* Fragmentation header & macros for it. NOTE: Host order assumption. */
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109
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110 struct ipv6_fraghdr
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111 {
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112 uint8_t frag_nexthdr; /* Next header type. */
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113 uint8_t frag_reserved;
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114 uint16_t frag_bitsoffset; /* More bit and fragment offset. */
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115 uint32_t frag_id; /* Fragment identifier. */
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116 };
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117
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118 #define FRAG_MOREMASK 0x1
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119 #define FRAG_OFFMASK 0xFFF8
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120 #define FRAG_MORE_BIT(fh) ((fh)->frag_bitsoffset & FRAG_MOREMASK)
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121 #define FRAG_OFFSET(fh) ((fh)->frag_bitsoffset & FRAG_OFFMASK)
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122
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123 /* Source routing header. Host order assumption for macros. */
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124
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125 struct ipv6_srcroute0
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126 {
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127 uint8_t i6sr_nexthdr; /* Next header type. */
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128 uint8_t i6sr_len; /* RH len in 8-byte addrs, !incl this structure */
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129 uint8_t i6sr_type; /* Routing type, should be 0 */
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130 uint8_t i6sr_left; /* Segments left */
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131 uint32_t i6sr_reserved; /* 8 bits of reserved padding. */
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132 };
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133
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134 #define I6SR_BITMASK(i6sr) ((i6sr)->i6sr_reserved & 0xffffff)
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135
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136 /* Options header. For "ignoreable" options. */
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137
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138 struct ipv6_opthdr
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139 {
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140 uint8_t oh_nexthdr; /* Next header type. */
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141 uint8_t oh_extlen; /* Header extension length. */
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142 uint8_t oh_data[6]; /* Option data, may be reserved for
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143 alignment purposes. */
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144 };
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145
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146 #define OPT_PAD1 0
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147 #define OPT_PADN 1
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148 #define OPT_JUMBO 194
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149
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150 struct ipv6_option
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151 {
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152 uint8_t opt_type; /* Option type. */
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153 uint8_t opt_datalen; /* Option data length. */
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154 uint8_t opt_data[1]; /* Option data. */
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155 };
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156 #endif /* _NETINET6_IPV6_H */