1#ifndef _LINUX_ICMPV6_H
2#define _LINUX_ICMPV6_H
3
4#include <asm/byteorder.h>
5
6struct icmp6hdr {
7
8	__u8		icmp6_type;
9	__u8		icmp6_code;
10	__sum16		icmp6_cksum;
11
12
13	union {
14		__be32			un_data32[1];
15		__be16			un_data16[2];
16		__u8			un_data8[4];
17
18		struct icmpv6_echo {
19			__be16		identifier;
20			__be16		sequence;
21		} u_echo;
22
23                struct icmpv6_nd_advt {
24#if defined(__LITTLE_ENDIAN_BITFIELD)
25                        __u32		reserved:5,
26                        		override:1,
27                        		solicited:1,
28                        		router:1,
29					reserved2:24;
30#elif defined(__BIG_ENDIAN_BITFIELD)
31                        __u32		router:1,
32					solicited:1,
33                        		override:1,
34                        		reserved:29;
35#else
36#error	"Please fix <asm/byteorder.h>"
37#endif
38                } u_nd_advt;
39
40                struct icmpv6_nd_ra {
41			__u8		hop_limit;
42#if defined(__LITTLE_ENDIAN_BITFIELD)
43			__u8		reserved:4,
44					router_pref:2,
45					other:1,
46					managed:1;
47
48#elif defined(__BIG_ENDIAN_BITFIELD)
49			__u8		managed:1,
50					other:1,
51					router_pref:2,
52					reserved:4;
53#else
54#error	"Please fix <asm/byteorder.h>"
55#endif
56			__be16		rt_lifetime;
57                } u_nd_ra;
58
59	} icmp6_dataun;
60
61#define icmp6_identifier	icmp6_dataun.u_echo.identifier
62#define icmp6_sequence		icmp6_dataun.u_echo.sequence
63#define icmp6_pointer		icmp6_dataun.un_data32[0]
64#define icmp6_mtu		icmp6_dataun.un_data32[0]
65#define icmp6_unused		icmp6_dataun.un_data32[0]
66#define icmp6_maxdelay		icmp6_dataun.un_data16[0]
67#define icmp6_router		icmp6_dataun.u_nd_advt.router
68#define icmp6_solicited		icmp6_dataun.u_nd_advt.solicited
69#define icmp6_override		icmp6_dataun.u_nd_advt.override
70#define icmp6_ndiscreserved	icmp6_dataun.u_nd_advt.reserved
71#define icmp6_hop_limit		icmp6_dataun.u_nd_ra.hop_limit
72#define icmp6_addrconf_managed	icmp6_dataun.u_nd_ra.managed
73#define icmp6_addrconf_other	icmp6_dataun.u_nd_ra.other
74#define icmp6_rt_lifetime	icmp6_dataun.u_nd_ra.rt_lifetime
75#define icmp6_router_pref	icmp6_dataun.u_nd_ra.router_pref
76};
77
78#ifdef __KERNEL__
79#include <linux/skbuff.h>
80
81static inline struct icmp6hdr *icmp6_hdr(const struct sk_buff *skb)
82{
83	return (struct icmp6hdr *)skb_transport_header(skb);
84}
85#endif
86
87#define ICMPV6_ROUTER_PREF_LOW		0x3
88#define ICMPV6_ROUTER_PREF_MEDIUM	0x0
89#define ICMPV6_ROUTER_PREF_HIGH		0x1
90#define ICMPV6_ROUTER_PREF_INVALID	0x2
91
92#define ICMPV6_DEST_UNREACH		1
93#define ICMPV6_PKT_TOOBIG		2
94#define ICMPV6_TIME_EXCEED		3
95#define ICMPV6_PARAMPROB		4
96
97#define ICMPV6_INFOMSG_MASK		0x80
98
99#define ICMPV6_ECHO_REQUEST		128
100#define ICMPV6_ECHO_REPLY		129
101#define ICMPV6_MGM_QUERY		130
102#define ICMPV6_MGM_REPORT       	131
103#define ICMPV6_MGM_REDUCTION    	132
104
105#define ICMPV6_NI_QUERY			139
106#define ICMPV6_NI_REPLY			140
107
108#define ICMPV6_MLD2_REPORT		143
109
110#define ICMPV6_DHAAD_REQUEST		144
111#define ICMPV6_DHAAD_REPLY		145
112#define ICMPV6_MOBILE_PREFIX_SOL	146
113#define ICMPV6_MOBILE_PREFIX_ADV	147
114
115/*
116 *	Codes for Destination Unreachable
117 */
118#define ICMPV6_NOROUTE			0
119#define ICMPV6_ADM_PROHIBITED		1
120#define ICMPV6_NOT_NEIGHBOUR		2
121#define ICMPV6_ADDR_UNREACH		3
122#define ICMPV6_PORT_UNREACH		4
123
124/*
125 *	Codes for Time Exceeded
126 */
127#define ICMPV6_EXC_HOPLIMIT		0
128#define ICMPV6_EXC_FRAGTIME		1
129
130/*
131 *	Codes for Parameter Problem
132 */
133#define ICMPV6_HDR_FIELD		0
134#define ICMPV6_UNK_NEXTHDR		1
135#define ICMPV6_UNK_OPTION		2
136
137/*
138 *	constants for (set|get)sockopt
139 */
140
141#define ICMPV6_FILTER			1
142
143/*
144 *	ICMPV6 filter
145 */
146
147#define ICMPV6_FILTER_BLOCK		1
148#define ICMPV6_FILTER_PASS		2
149#define ICMPV6_FILTER_BLOCKOTHERS	3
150#define ICMPV6_FILTER_PASSONLY		4
151
152struct icmp6_filter {
153	__u32		data[8];
154};
155
156/*
157 *	Definitions for MLDv2
158 */
159#define MLD2_MODE_IS_INCLUDE	1
160#define MLD2_MODE_IS_EXCLUDE	2
161#define MLD2_CHANGE_TO_INCLUDE	3
162#define MLD2_CHANGE_TO_EXCLUDE	4
163#define MLD2_ALLOW_NEW_SOURCES	5
164#define MLD2_BLOCK_OLD_SOURCES	6
165
166#define MLD2_ALL_MCR_INIT { { { 0xff,0x02,0,0,0,0,0,0,0,0,0,0,0,0,0,0x16 } } }
167
168#ifdef __KERNEL__
169
170#include <linux/netdevice.h>
171#include <linux/skbuff.h>
172
173
174extern void				icmpv6_send(struct sk_buff *skb,
175						    int type, int code,
176						    __u32 info,
177						    struct net_device *dev);
178
179extern int				icmpv6_init(struct net_proto_family *ops);
180extern int				icmpv6_err_convert(int type, int code,
181							   int *err);
182extern void				icmpv6_cleanup(void);
183extern void				icmpv6_param_prob(struct sk_buff *skb,
184							  int code, int pos);
185#endif
186
187#endif
188