1 #ifndef _LINUX_ICMPV6_H
2 #define _LINUX_ICMPV6_H
3
4 #include <linux/types.h>
5 #include <asm/byteorder.h>
6
7 struct icmp6hdr {
8
9 __u8 icmp6_type;
10 __u8 icmp6_code;
11 __sum16 icmp6_cksum;
12
13
14 union {
15 __be32 un_data32[1];
16 __be16 un_data16[2];
17 __u8 un_data8[4];
18
19 struct icmpv6_echo {
20 __be16 identifier;
21 __be16 sequence;
22 } u_echo;
23
24 struct icmpv6_nd_advt {
25 #if defined(__LITTLE_ENDIAN_BITFIELD)
26 __u32 reserved:5,
27 override:1,
28 solicited:1,
29 router:1,
30 reserved2:24;
31 #elif defined(__BIG_ENDIAN_BITFIELD)
32 __u32 router:1,
33 solicited:1,
34 override:1,
35 reserved:29;
36 #else
37 #error "Please fix <asm/byteorder.h>"
38 #endif
39 } u_nd_advt;
40
41 struct icmpv6_nd_ra {
42 __u8 hop_limit;
43 #if defined(__LITTLE_ENDIAN_BITFIELD)
44 __u8 reserved:3,
45 router_pref:2,
46 home_agent:1,
47 other:1,
48 managed:1;
49
50 #elif defined(__BIG_ENDIAN_BITFIELD)
51 __u8 managed:1,
52 other:1,
53 home_agent:1,
54 router_pref:2,
55 reserved:3;
56 #else
57 #error "Please fix <asm/byteorder.h>"
58 #endif
59 __be16 rt_lifetime;
60 } u_nd_ra;
61
62 } icmp6_dataun;
63
64 #define icmp6_identifier icmp6_dataun.u_echo.identifier
65 #define icmp6_sequence icmp6_dataun.u_echo.sequence
66 #define icmp6_pointer icmp6_dataun.un_data32[0]
67 #define icmp6_mtu icmp6_dataun.un_data32[0]
68 #define icmp6_unused icmp6_dataun.un_data32[0]
69 #define icmp6_maxdelay icmp6_dataun.un_data16[0]
70 #define icmp6_router icmp6_dataun.u_nd_advt.router
71 #define icmp6_solicited icmp6_dataun.u_nd_advt.solicited
72 #define icmp6_override icmp6_dataun.u_nd_advt.override
73 #define icmp6_ndiscreserved icmp6_dataun.u_nd_advt.reserved
74 #define icmp6_hop_limit icmp6_dataun.u_nd_ra.hop_limit
75 #define icmp6_addrconf_managed icmp6_dataun.u_nd_ra.managed
76 #define icmp6_addrconf_other icmp6_dataun.u_nd_ra.other
77 #define icmp6_rt_lifetime icmp6_dataun.u_nd_ra.rt_lifetime
78 #define icmp6_router_pref icmp6_dataun.u_nd_ra.router_pref
79 };
80
81 #ifdef __KERNEL__
82 #include <linux/skbuff.h>
83
icmp6_hdr(const struct sk_buff * skb)84 static inline struct icmp6hdr *icmp6_hdr(const struct sk_buff *skb)
85 {
86 return (struct icmp6hdr *)skb_transport_header(skb);
87 }
88 #endif
89
90 #define ICMPV6_ROUTER_PREF_LOW 0x3
91 #define ICMPV6_ROUTER_PREF_MEDIUM 0x0
92 #define ICMPV6_ROUTER_PREF_HIGH 0x1
93 #define ICMPV6_ROUTER_PREF_INVALID 0x2
94
95 #define ICMPV6_DEST_UNREACH 1
96 #define ICMPV6_PKT_TOOBIG 2
97 #define ICMPV6_TIME_EXCEED 3
98 #define ICMPV6_PARAMPROB 4
99
100 #define ICMPV6_INFOMSG_MASK 0x80
101
102 #define ICMPV6_ECHO_REQUEST 128
103 #define ICMPV6_ECHO_REPLY 129
104 #define ICMPV6_MGM_QUERY 130
105 #define ICMPV6_MGM_REPORT 131
106 #define ICMPV6_MGM_REDUCTION 132
107
108 #define ICMPV6_NI_QUERY 139
109 #define ICMPV6_NI_REPLY 140
110
111 #define ICMPV6_MLD2_REPORT 143
112
113 #define ICMPV6_DHAAD_REQUEST 144
114 #define ICMPV6_DHAAD_REPLY 145
115 #define ICMPV6_MOBILE_PREFIX_SOL 146
116 #define ICMPV6_MOBILE_PREFIX_ADV 147
117
118 /*
119 * Codes for Destination Unreachable
120 */
121 #define ICMPV6_NOROUTE 0
122 #define ICMPV6_ADM_PROHIBITED 1
123 #define ICMPV6_NOT_NEIGHBOUR 2
124 #define ICMPV6_ADDR_UNREACH 3
125 #define ICMPV6_PORT_UNREACH 4
126 #define ICMPV6_POLICY_FAIL 5
127 #define ICMPV6_REJECT_ROUTE 6
128
129 /*
130 * Codes for Time Exceeded
131 */
132 #define ICMPV6_EXC_HOPLIMIT 0
133 #define ICMPV6_EXC_FRAGTIME 1
134
135 /*
136 * Codes for Parameter Problem
137 */
138 #define ICMPV6_HDR_FIELD 0
139 #define ICMPV6_UNK_NEXTHDR 1
140 #define ICMPV6_UNK_OPTION 2
141
142 /*
143 * constants for (set|get)sockopt
144 */
145
146 #define ICMPV6_FILTER 1
147
148 /*
149 * ICMPV6 filter
150 */
151
152 #define ICMPV6_FILTER_BLOCK 1
153 #define ICMPV6_FILTER_PASS 2
154 #define ICMPV6_FILTER_BLOCKOTHERS 3
155 #define ICMPV6_FILTER_PASSONLY 4
156
157 struct icmp6_filter {
158 __u32 data[8];
159 };
160
161 /*
162 * Definitions for MLDv2
163 */
164 #define MLD2_MODE_IS_INCLUDE 1
165 #define MLD2_MODE_IS_EXCLUDE 2
166 #define MLD2_CHANGE_TO_INCLUDE 3
167 #define MLD2_CHANGE_TO_EXCLUDE 4
168 #define MLD2_ALLOW_NEW_SOURCES 5
169 #define MLD2_BLOCK_OLD_SOURCES 6
170
171 #define MLD2_ALL_MCR_INIT { { { 0xff,0x02,0,0,0,0,0,0,0,0,0,0,0,0,0,0x16 } } }
172
173 #ifdef __KERNEL__
174
175 #include <linux/netdevice.h>
176
177 extern void icmpv6_send(struct sk_buff *skb,
178 u8 type, u8 code,
179 __u32 info);
180
181 extern int icmpv6_init(void);
182 extern int icmpv6_err_convert(u8 type, u8 code,
183 int *err);
184 extern void icmpv6_cleanup(void);
185 extern void icmpv6_param_prob(struct sk_buff *skb,
186 u8 code, int pos);
187
188 struct flowi6;
189 struct in6_addr;
190 extern void icmpv6_flow_init(struct sock *sk,
191 struct flowi6 *fl6,
192 u8 type,
193 const struct in6_addr *saddr,
194 const struct in6_addr *daddr,
195 int oif);
196 #endif
197
198 #endif
199