1 | #ifndef _NETINET_IP6_H
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2 | #define _NETINET_IP6_H
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3 |
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4 | #ifdef __cplusplus
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5 | extern "C" {
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6 | #endif
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7 |
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8 | #include <stdint.h>
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9 | #include <netinet/in.h>
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10 | #include <endian.h>
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11 |
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12 | struct ip6_hdr {
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13 | union {
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14 | struct ip6_hdrctl {
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15 | uint32_t ip6_un1_flow;
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16 | uint16_t ip6_un1_plen;
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17 | uint8_t ip6_un1_nxt;
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18 | uint8_t ip6_un1_hlim;
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19 | } ip6_un1;
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20 | uint8_t ip6_un2_vfc;
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21 | } ip6_ctlun;
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22 | struct in6_addr ip6_src;
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23 | struct in6_addr ip6_dst;
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24 | };
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25 |
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26 | #define ip6_vfc ip6_ctlun.ip6_un2_vfc
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27 | #define ip6_flow ip6_ctlun.ip6_un1.ip6_un1_flow
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28 | #define ip6_plen ip6_ctlun.ip6_un1.ip6_un1_plen
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29 | #define ip6_nxt ip6_ctlun.ip6_un1.ip6_un1_nxt
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30 | #define ip6_hlim ip6_ctlun.ip6_un1.ip6_un1_hlim
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31 | #define ip6_hops ip6_ctlun.ip6_un1.ip6_un1_hlim
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32 |
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33 | struct ip6_ext {
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34 | uint8_t ip6e_nxt;
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35 | uint8_t ip6e_len;
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36 | };
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37 |
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38 | struct ip6_hbh {
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39 | uint8_t ip6h_nxt;
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40 | uint8_t ip6h_len;
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41 | };
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42 |
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43 | struct ip6_dest {
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44 | uint8_t ip6d_nxt;
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45 | uint8_t ip6d_len;
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46 | };
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47 |
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48 | struct ip6_rthdr {
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49 | uint8_t ip6r_nxt;
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50 | uint8_t ip6r_len;
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51 | uint8_t ip6r_type;
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52 | uint8_t ip6r_segleft;
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53 | };
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54 |
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55 | struct ip6_rthdr0 {
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56 | uint8_t ip6r0_nxt;
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57 | uint8_t ip6r0_len;
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58 | uint8_t ip6r0_type;
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59 | uint8_t ip6r0_segleft;
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60 | uint8_t ip6r0_reserved;
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61 | uint8_t ip6r0_slmap[3];
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62 | struct in6_addr ip6r0_addr[];
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63 | };
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64 |
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65 | struct ip6_frag {
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66 | uint8_t ip6f_nxt;
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67 | uint8_t ip6f_reserved;
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68 | uint16_t ip6f_offlg;
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69 | uint32_t ip6f_ident;
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70 | };
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71 |
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72 | #if __BYTE_ORDER == __BIG_ENDIAN
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73 | #define IP6F_OFF_MASK 0xfff8
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74 | #define IP6F_RESERVED_MASK 0x0006
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75 | #define IP6F_MORE_FRAG 0x0001
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76 | #else
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77 | #define IP6F_OFF_MASK 0xf8ff
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78 | #define IP6F_RESERVED_MASK 0x0600
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79 | #define IP6F_MORE_FRAG 0x0100
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80 | #endif
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81 |
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82 | struct ip6_opt {
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83 | uint8_t ip6o_type;
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84 | uint8_t ip6o_len;
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85 | };
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86 |
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87 | #define IP6OPT_TYPE(o) ((o) & 0xc0)
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88 | #define IP6OPT_TYPE_SKIP 0x00
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89 | #define IP6OPT_TYPE_DISCARD 0x40
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90 | #define IP6OPT_TYPE_FORCEICMP 0x80
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91 | #define IP6OPT_TYPE_ICMP 0xc0
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92 | #define IP6OPT_TYPE_MUTABLE 0x20
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93 |
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94 | #define IP6OPT_PAD1 0
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95 | #define IP6OPT_PADN 1
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96 |
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97 | #define IP6OPT_JUMBO 0xc2
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98 | #define IP6OPT_NSAP_ADDR 0xc3
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99 | #define IP6OPT_TUNNEL_LIMIT 0x04
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100 | #define IP6OPT_ROUTER_ALERT 0x05
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101 |
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102 | struct ip6_opt_jumbo {
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103 | uint8_t ip6oj_type;
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104 | uint8_t ip6oj_len;
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105 | uint8_t ip6oj_jumbo_len[4];
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106 | };
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107 | #define IP6OPT_JUMBO_LEN 6
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108 |
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109 | struct ip6_opt_nsap {
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110 | uint8_t ip6on_type;
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111 | uint8_t ip6on_len;
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112 | uint8_t ip6on_src_nsap_len;
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113 | uint8_t ip6on_dst_nsap_len;
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114 | };
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115 |
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116 | struct ip6_opt_tunnel {
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117 | uint8_t ip6ot_type;
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118 | uint8_t ip6ot_len;
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119 | uint8_t ip6ot_encap_limit;
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120 | };
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121 |
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122 | struct ip6_opt_router {
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123 | uint8_t ip6or_type;
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124 | uint8_t ip6or_len;
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125 | uint8_t ip6or_value[2];
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126 | };
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127 |
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128 | #if __BYTE_ORDER == __BIG_ENDIAN
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129 | #define IP6_ALERT_MLD 0x0000
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130 | #define IP6_ALERT_RSVP 0x0001
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131 | #define IP6_ALERT_AN 0x0002
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132 | #else
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133 | #define IP6_ALERT_MLD 0x0000
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134 | #define IP6_ALERT_RSVP 0x0100
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135 | #define IP6_ALERT_AN 0x0200
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136 | #endif
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137 |
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138 | #ifdef __cplusplus
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139 | }
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140 | #endif
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141 |
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142 | #endif
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