1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 #ifndef _UAPI_LINUX_ICMPV6_H
3 #define _UAPI_LINUX_ICMPV6_H
4
5 #include <linux/types.h>
6 #include <asm/byteorder.h>
7
8 struct icmp6hdr {
9
10 __u8 icmp6_type;
11 __u8 icmp6_code;
12 __sum16 icmp6_cksum;
13
14
15 union {
16 __be32 un_data32[1];
17 __be16 un_data16[2];
18 __u8 un_data8[4];
19
20 struct icmpv6_echo {
21 __be16 identifier;
22 __be16 sequence;
23 } u_echo;
24
25 struct icmpv6_nd_advt {
26 #if defined(__LITTLE_ENDIAN_BITFIELD)
27 __u32 reserved:5,
28 override:1,
29 solicited:1,
30 router:1,
31 reserved2:24;
32 #elif defined(__BIG_ENDIAN_BITFIELD)
33 __u32 router:1,
34 solicited:1,
35 override:1,
36 reserved:29;
37 #else
38 #error "Please fix <asm/byteorder.h>"
39 #endif
40 } u_nd_advt;
41
42 struct icmpv6_nd_ra {
43 __u8 hop_limit;
44 #if defined(__LITTLE_ENDIAN_BITFIELD)
45 __u8 reserved:3,
46 router_pref:2,
47 home_agent:1,
48 other:1,
49 managed:1;
50
51 #elif defined(__BIG_ENDIAN_BITFIELD)
52 __u8 managed:1,
53 other:1,
54 home_agent:1,
55 router_pref:2,
56 reserved:3;
57 #else
58 #error "Please fix <asm/byteorder.h>"
59 #endif
60 __be16 rt_lifetime;
61 } u_nd_ra;
62
63 } icmp6_dataun;
64
65 #define icmp6_identifier icmp6_dataun.u_echo.identifier
66 #define icmp6_sequence icmp6_dataun.u_echo.sequence
67 #define icmp6_pointer icmp6_dataun.un_data32[0]
68 #define icmp6_mtu icmp6_dataun.un_data32[0]
69 #define icmp6_unused icmp6_dataun.un_data32[0]
70 #define icmp6_maxdelay icmp6_dataun.un_data16[0]
71 #define icmp6_datagram_len icmp6_dataun.un_data8[0]
72 #define icmp6_router icmp6_dataun.u_nd_advt.router
73 #define icmp6_solicited icmp6_dataun.u_nd_advt.solicited
74 #define icmp6_override icmp6_dataun.u_nd_advt.override
75 #define icmp6_ndiscreserved icmp6_dataun.u_nd_advt.reserved
76 #define icmp6_hop_limit icmp6_dataun.u_nd_ra.hop_limit
77 #define icmp6_addrconf_managed icmp6_dataun.u_nd_ra.managed
78 #define icmp6_addrconf_other icmp6_dataun.u_nd_ra.other
79 #define icmp6_rt_lifetime icmp6_dataun.u_nd_ra.rt_lifetime
80 #define icmp6_router_pref icmp6_dataun.u_nd_ra.router_pref
81 };
82
83
84 #define ICMPV6_ROUTER_PREF_LOW 0x3
85 #define ICMPV6_ROUTER_PREF_MEDIUM 0x0
86 #define ICMPV6_ROUTER_PREF_HIGH 0x1
87 #define ICMPV6_ROUTER_PREF_INVALID 0x2
88
89 #define ICMPV6_DEST_UNREACH 1
90 #define ICMPV6_PKT_TOOBIG 2
91 #define ICMPV6_TIME_EXCEED 3
92 #define ICMPV6_PARAMPROB 4
93
94 #define ICMPV6_ERRMSG_MAX 127
95
96 #define ICMPV6_INFOMSG_MASK 0x80
97
98 #define ICMPV6_ECHO_REQUEST 128
99 #define ICMPV6_ECHO_REPLY 129
100 #define ICMPV6_MGM_QUERY 130
101 #define ICMPV6_MGM_REPORT 131
102 #define ICMPV6_MGM_REDUCTION 132
103
104 #define ICMPV6_NI_QUERY 139
105 #define ICMPV6_NI_REPLY 140
106
107 #define ICMPV6_MLD2_REPORT 143
108
109 #define ICMPV6_DHAAD_REQUEST 144
110 #define ICMPV6_DHAAD_REPLY 145
111 #define ICMPV6_MOBILE_PREFIX_SOL 146
112 #define ICMPV6_MOBILE_PREFIX_ADV 147
113
114 #define ICMPV6_MRDISC_ADV 151
115 #define ICMPV6_MRDISC_SOL 152
116
117 #define ICMPV6_MSG_MAX 255
118
119 /*
120 * Codes for Destination Unreachable
121 */
122 #define ICMPV6_NOROUTE 0
123 #define ICMPV6_ADM_PROHIBITED 1
124 #define ICMPV6_NOT_NEIGHBOUR 2
125 #define ICMPV6_ADDR_UNREACH 3
126 #define ICMPV6_PORT_UNREACH 4
127 #define ICMPV6_POLICY_FAIL 5
128 #define ICMPV6_REJECT_ROUTE 6
129
130 /*
131 * Codes for Time Exceeded
132 */
133 #define ICMPV6_EXC_HOPLIMIT 0
134 #define ICMPV6_EXC_FRAGTIME 1
135
136 /*
137 * Codes for Parameter Problem
138 */
139 #define ICMPV6_HDR_FIELD 0
140 #define ICMPV6_UNK_NEXTHDR 1
141 #define ICMPV6_UNK_OPTION 2
142 #define ICMPV6_HDR_INCOMP 3
143
144 /* Codes for EXT_ECHO (PROBE) */
145 #define ICMPV6_EXT_ECHO_REQUEST 160
146 #define ICMPV6_EXT_ECHO_REPLY 161
147 /*
148 * constants for (set|get)sockopt
149 */
150
151 #define ICMPV6_FILTER 1
152
153 /*
154 * ICMPV6 filter
155 */
156
157 #define ICMPV6_FILTER_BLOCK 1
158 #define ICMPV6_FILTER_PASS 2
159 #define ICMPV6_FILTER_BLOCKOTHERS 3
160 #define ICMPV6_FILTER_PASSONLY 4
161
162 struct icmp6_filter {
163 __u32 data[8];
164 };
165
166 /*
167 * Definitions for MLDv2
168 */
169 #define MLD2_MODE_IS_INCLUDE 1
170 #define MLD2_MODE_IS_EXCLUDE 2
171 #define MLD2_CHANGE_TO_INCLUDE 3
172 #define MLD2_CHANGE_TO_EXCLUDE 4
173 #define MLD2_ALLOW_NEW_SOURCES 5
174 #define MLD2_BLOCK_OLD_SOURCES 6
175
176 #define MLD2_ALL_MCR_INIT { { { 0xff,0x02,0,0,0,0,0,0,0,0,0,0,0,0,0,0x16 } } }
177
178
179 #endif /* _UAPI_LINUX_ICMPV6_H */
180
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