1 #ifndef _LINUX_ICMPV6_H
2 #define _LINUX_ICMPV6_H
3
4 #include <asm/byteorder.h>
5
6 struct icmp6hdr {
7
8 __u8 icmp6_type;
9 __u8 icmp6_code;
10 __u16 icmp6_cksum;
11
12
13 union {
14 __u32 un_data32[1];
15 __u16 un_data16[2];
16 __u8 un_data8[4];
17
18 struct icmpv6_echo {
19 __u16 identifier;
20 __u16 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:6,
44 other:1,
45 managed:1;
46
47 #elif defined(__BIG_ENDIAN_BITFIELD)
48 __u8 managed:1,
49 other:1,
50 reserved:6;
51 #else
52 #error "Please fix <asm/byteorder.h>"
53 #endif
54 __u16 rt_lifetime;
55 } u_nd_ra;
56
57 } icmp6_dataun;
58
59 #define icmp6_identifier icmp6_dataun.u_echo.identifier
60 #define icmp6_sequence icmp6_dataun.u_echo.sequence
61 #define icmp6_pointer icmp6_dataun.un_data32[0]
62 #define icmp6_mtu icmp6_dataun.un_data32[0]
63 #define icmp6_unused icmp6_dataun.un_data32[0]
64 #define icmp6_maxdelay icmp6_dataun.un_data16[0]
65 #define icmp6_router icmp6_dataun.u_nd_advt.router
66 #define icmp6_solicited icmp6_dataun.u_nd_advt.solicited
67 #define icmp6_override icmp6_dataun.u_nd_advt.override
68 #define icmp6_ndiscreserved icmp6_dataun.u_nd_advt.reserved
69 #define icmp6_hop_limit icmp6_dataun.u_nd_ra.hop_limit
70 #define icmp6_addrconf_managed icmp6_dataun.u_nd_ra.managed
71 #define icmp6_addrconf_other icmp6_dataun.u_nd_ra.other
72 #define icmp6_rt_lifetime icmp6_dataun.u_nd_ra.rt_lifetime
73 };
74
75
76 #define ICMPV6_DEST_UNREACH 1
77 #define ICMPV6_PKT_TOOBIG 2
78 #define ICMPV6_TIME_EXCEED 3
79 #define ICMPV6_PARAMPROB 4
80
81 #define ICMPV6_INFOMSG_MASK 0x80
82
83 #define ICMPV6_ECHO_REQUEST 128
84 #define ICMPV6_ECHO_REPLY 129
85 #define ICMPV6_MGM_QUERY 130
86 #define ICMPV6_MGM_REPORT 131
87 #define ICMPV6_MGM_REDUCTION 132
88
89 #define ICMPV6_NI_QUERY 139
90 #define ICMPV6_NI_REPLY 140
91
92 #define ICMPV6_MLD2_REPORT 143
93
94 #define ICMPV6_DHAAD_REQUEST 144
95 #define ICMPV6_DHAAD_REPLY 145
96 #define ICMPV6_MOBILE_PREFIX_SOL 146
97 #define ICMPV6_MOBILE_PREFIX_ADV 147
98
99 /*
100 * Codes for Destination Unreachable
101 */
102 #define ICMPV6_NOROUTE 0
103 #define ICMPV6_ADM_PROHIBITED 1
104 #define ICMPV6_NOT_NEIGHBOUR 2
105 #define ICMPV6_ADDR_UNREACH 3
106 #define ICMPV6_PORT_UNREACH 4
107
108 /*
109 * Codes for Time Exceeded
110 */
111 #define ICMPV6_EXC_HOPLIMIT 0
112 #define ICMPV6_EXC_FRAGTIME 1
113
114 /*
115 * Codes for Parameter Problem
116 */
117 #define ICMPV6_HDR_FIELD 0
118 #define ICMPV6_UNK_NEXTHDR 1
119 #define ICMPV6_UNK_OPTION 2
120
121 /*
122 * constants for (set|get)sockopt
123 */
124
125 #define ICMPV6_FILTER 1
126
127 /*
128 * ICMPV6 filter
129 */
130
131 #define ICMPV6_FILTER_BLOCK 1
132 #define ICMPV6_FILTER_PASS 2
133 #define ICMPV6_FILTER_BLOCKOTHERS 3
134 #define ICMPV6_FILTER_PASSONLY 4
135
136 struct icmp6_filter {
137 __u32 data[8];
138 };
139
140 /*
141 * Definitions for MLDv2
142 */
143 #define MLD2_MODE_IS_INCLUDE 1
144 #define MLD2_MODE_IS_EXCLUDE 2
145 #define MLD2_CHANGE_TO_INCLUDE 3
146 #define MLD2_CHANGE_TO_EXCLUDE 4
147 #define MLD2_ALLOW_NEW_SOURCES 5
148 #define MLD2_BLOCK_OLD_SOURCES 6
149
150 #define MLD2_ALL_MCR_INIT { { { 0xff,0x02,0,0,0,0,0,0,0,0,0,0,0,0,0,0x16 } } }
151
152 #ifdef __KERNEL__
153
154 #include <linux/netdevice.h>
155 #include <linux/skbuff.h>
156
157
158 extern void icmpv6_send(struct sk_buff *skb,
159 int type, int code,
160 __u32 info,
161 struct net_device *dev);
162
163 extern int icmpv6_init(struct net_proto_family *ops);
164 extern int icmpv6_err_convert(int type, int code,
165 int *err);
166 extern void icmpv6_cleanup(void);
167 extern void icmpv6_param_prob(struct sk_buff *skb,
168 int code, int pos);
169 #endif
170
171 #endif
172
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