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