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
142