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