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1 office 1 /**
2 * @file
3 * ICMP6 protocol definitions
4 */
5  
6 /*
7 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
8 * All rights reserved.
9 *
10 * Redistribution and use in source and binary forms, with or without modification,
11 * are permitted provided that the following conditions are met:
12 *
13 * 1. Redistributions of source code must retain the above copyright notice,
14 * this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright notice,
16 * this list of conditions and the following disclaimer in the documentation
17 * and/or other materials provided with the distribution.
18 * 3. The name of the author may not be used to endorse or promote products
19 * derived from this software without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
22 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
23 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
24 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
25 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
26 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
29 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
30 * OF SUCH DAMAGE.
31 *
32 * This file is part of the lwIP TCP/IP stack.
33 *
34 * Author: Adam Dunkels <adam@sics.se>
35 *
36 */
37 #ifndef LWIP_HDR_PROT_ICMP6_H
38 #define LWIP_HDR_PROT_ICMP6_H
39  
40 #include "lwip/arch.h"
41  
42 #ifdef __cplusplus
43 extern "C" {
44 #endif
45  
46 /** ICMP type */
47 enum icmp6_type {
48 /** Destination unreachable */
49 ICMP6_TYPE_DUR = 1,
50 /** Packet too big */
51 ICMP6_TYPE_PTB = 2,
52 /** Time exceeded */
53 ICMP6_TYPE_TE = 3,
54 /** Parameter problem */
55 ICMP6_TYPE_PP = 4,
56 /** Private experimentation */
57 ICMP6_TYPE_PE1 = 100,
58 /** Private experimentation */
59 ICMP6_TYPE_PE2 = 101,
60 /** Reserved for expansion of error messages */
61 ICMP6_TYPE_RSV_ERR = 127,
62  
63 /** Echo request */
64 ICMP6_TYPE_EREQ = 128,
65 /** Echo reply */
66 ICMP6_TYPE_EREP = 129,
67 /** Multicast listener query */
68 ICMP6_TYPE_MLQ = 130,
69 /** Multicast listener report */
70 ICMP6_TYPE_MLR = 131,
71 /** Multicast listener done */
72 ICMP6_TYPE_MLD = 132,
73 /** Router solicitation */
74 ICMP6_TYPE_RS = 133,
75 /** Router advertisement */
76 ICMP6_TYPE_RA = 134,
77 /** Neighbor solicitation */
78 ICMP6_TYPE_NS = 135,
79 /** Neighbor advertisement */
80 ICMP6_TYPE_NA = 136,
81 /** Redirect */
82 ICMP6_TYPE_RD = 137,
83 /** Multicast router advertisement */
84 ICMP6_TYPE_MRA = 151,
85 /** Multicast router solicitation */
86 ICMP6_TYPE_MRS = 152,
87 /** Multicast router termination */
88 ICMP6_TYPE_MRT = 153,
89 /** Private experimentation */
90 ICMP6_TYPE_PE3 = 200,
91 /** Private experimentation */
92 ICMP6_TYPE_PE4 = 201,
93 /** Reserved for expansion of informational messages */
94 ICMP6_TYPE_RSV_INF = 255
95 };
96  
97 /** ICMP destination unreachable codes */
98 enum icmp6_dur_code {
99 /** No route to destination */
100 ICMP6_DUR_NO_ROUTE = 0,
101 /** Communication with destination administratively prohibited */
102 ICMP6_DUR_PROHIBITED = 1,
103 /** Beyond scope of source address */
104 ICMP6_DUR_SCOPE = 2,
105 /** Address unreachable */
106 ICMP6_DUR_ADDRESS = 3,
107 /** Port unreachable */
108 ICMP6_DUR_PORT = 4,
109 /** Source address failed ingress/egress policy */
110 ICMP6_DUR_POLICY = 5,
111 /** Reject route to destination */
112 ICMP6_DUR_REJECT_ROUTE = 6
113 };
114  
115 /** ICMP time exceeded codes */
116 enum icmp6_te_code {
117 /** Hop limit exceeded in transit */
118 ICMP6_TE_HL = 0,
119 /** Fragment reassembly time exceeded */
120 ICMP6_TE_FRAG = 1
121 };
122  
123 /** ICMP parameter code */
124 enum icmp6_pp_code {
125 /** Erroneous header field encountered */
126 ICMP6_PP_FIELD = 0,
127 /** Unrecognized next header type encountered */
128 ICMP6_PP_HEADER = 1,
129 /** Unrecognized IPv6 option encountered */
130 ICMP6_PP_OPTION = 2
131 };
132  
133 /** This is the standard ICMP6 header. */
134 #ifdef PACK_STRUCT_USE_INCLUDES
135 # include "arch/bpstruct.h"
136 #endif
137 PACK_STRUCT_BEGIN
138 struct icmp6_hdr {
139 PACK_STRUCT_FLD_8(u8_t type);
140 PACK_STRUCT_FLD_8(u8_t code);
141 PACK_STRUCT_FIELD(u16_t chksum);
142 PACK_STRUCT_FIELD(u32_t data);
143 } PACK_STRUCT_STRUCT;
144 PACK_STRUCT_END
145 #ifdef PACK_STRUCT_USE_INCLUDES
146 # include "arch/epstruct.h"
147 #endif
148  
149 /** This is the ICMP6 header adapted for echo req/resp. */
150 #ifdef PACK_STRUCT_USE_INCLUDES
151 # include "arch/bpstruct.h"
152 #endif
153 PACK_STRUCT_BEGIN
154 struct icmp6_echo_hdr {
155 PACK_STRUCT_FLD_8(u8_t type);
156 PACK_STRUCT_FLD_8(u8_t code);
157 PACK_STRUCT_FIELD(u16_t chksum);
158 PACK_STRUCT_FIELD(u16_t id);
159 PACK_STRUCT_FIELD(u16_t seqno);
160 } PACK_STRUCT_STRUCT;
161 PACK_STRUCT_END
162 #ifdef PACK_STRUCT_USE_INCLUDES
163 # include "arch/epstruct.h"
164 #endif
165  
166 #ifdef __cplusplus
167 }
168 #endif
169  
170 #endif /* LWIP_HDR_PROT_ICMP6_H */