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1#ifndef _NETINET_IP_ICMP_H
2#define _NETINET_IP_ICMP_H
3
4#include <stdint.h>
5#include <netinet/in.h>
6#include <netinet/ip.h>
7
8#ifdef __cplusplus
9extern "C" {
10#endif
11
12struct icmphdr {
13 uint8_t type;
14 uint8_t code;
15 uint16_t checksum;
16 union {
17 struct {
18 uint16_t id;
19 uint16_t sequence;
20 } echo;
21 uint32_t gateway;
22 struct {
23 uint16_t __unused;
24 uint16_t mtu;
25 } frag;
26 uint8_t reserved[4];
27 } un;
28};
29
30#define ICMP_ECHOREPLY 0
31#define ICMP_DEST_UNREACH 3
32#define ICMP_SOURCE_QUENCH 4
33#define ICMP_REDIRECT 5
34#define ICMP_ECHO 8
35#define ICMP_TIME_EXCEEDED 11
36#define ICMP_PARAMETERPROB 12
37#define ICMP_TIMESTAMP 13
38#define ICMP_TIMESTAMPREPLY 14
39#define ICMP_INFO_REQUEST 15
40#define ICMP_INFO_REPLY 16
41#define ICMP_ADDRESS 17
42#define ICMP_ADDRESSREPLY 18
43#define NR_ICMP_TYPES 18
44
45
46#define ICMP_NET_UNREACH 0
47#define ICMP_HOST_UNREACH 1
48#define ICMP_PROT_UNREACH 2
49#define ICMP_PORT_UNREACH 3
50#define ICMP_FRAG_NEEDED 4
51#define ICMP_SR_FAILED 5
52#define ICMP_NET_UNKNOWN 6
53#define ICMP_HOST_UNKNOWN 7
54#define ICMP_HOST_ISOLATED 8
55#define ICMP_NET_ANO 9
56#define ICMP_HOST_ANO 10
57#define ICMP_NET_UNR_TOS 11
58#define ICMP_HOST_UNR_TOS 12
59#define ICMP_PKT_FILTERED 13
60#define ICMP_PREC_VIOLATION 14
61#define ICMP_PREC_CUTOFF 15
62#define NR_ICMP_UNREACH 15
63
64#define ICMP_REDIR_NET 0
65#define ICMP_REDIR_HOST 1
66#define ICMP_REDIR_NETTOS 2
67#define ICMP_REDIR_HOSTTOS 3
68
69#define ICMP_EXC_TTL 0
70#define ICMP_EXC_FRAGTIME 1
71
72
73struct icmp_ra_addr {
74 uint32_t ira_addr;
75 uint32_t ira_preference;
76};
77
78struct icmp {
79 uint8_t icmp_type;
80 uint8_t icmp_code;
81 uint16_t icmp_cksum;
82 union {
83 uint8_t ih_pptr;
84 struct in_addr ih_gwaddr;
85 struct ih_idseq {
86 uint16_t icd_id;
87 uint16_t icd_seq;
88 } ih_idseq;
89 uint32_t ih_void;
90
91 struct ih_pmtu {
92 uint16_t ipm_void;
93 uint16_t ipm_nextmtu;
94 } ih_pmtu;
95
96 struct ih_rtradv {
97 uint8_t irt_num_addrs;
98 uint8_t irt_wpa;
99 uint16_t irt_lifetime;
100 } ih_rtradv;
101 } icmp_hun;
102 union {
103 struct {
104 uint32_t its_otime;
105 uint32_t its_rtime;
106 uint32_t its_ttime;
107 } id_ts;
108 struct {
109 struct ip idi_ip;
110 } id_ip;
111 struct icmp_ra_addr id_radv;
112 uint32_t id_mask;
113 uint8_t id_data[1];
114 } icmp_dun;
115};
116
117#define icmp_pptr icmp_hun.ih_pptr
118#define icmp_gwaddr icmp_hun.ih_gwaddr
119#define icmp_id icmp_hun.ih_idseq.icd_id
120#define icmp_seq icmp_hun.ih_idseq.icd_seq
121#define icmp_void icmp_hun.ih_void
122#define icmp_pmvoid icmp_hun.ih_pmtu.ipm_void
123#define icmp_nextmtu icmp_hun.ih_pmtu.ipm_nextmtu
124#define icmp_num_addrs icmp_hun.ih_rtradv.irt_num_addrs
125#define icmp_wpa icmp_hun.ih_rtradv.irt_wpa
126#define icmp_lifetime icmp_hun.ih_rtradv.irt_lifetime
127#define icmp_otime icmp_dun.id_ts.its_otime
128#define icmp_rtime icmp_dun.id_ts.its_rtime
129#define icmp_ttime icmp_dun.id_ts.its_ttime
130#define icmp_ip icmp_dun.id_ip.idi_ip
131#define icmp_radv icmp_dun.id_radv
132#define icmp_mask icmp_dun.id_mask
133#define icmp_data icmp_dun.id_data
134
135#define ICMP_MINLEN 8
136#define ICMP_TSLEN (8 + 3 * sizeof (n_time))
137#define ICMP_MASKLEN 12
138#define ICMP_ADVLENMIN (8 + sizeof (struct ip) + 8)
139#define ICMP_ADVLEN(p) (8 + ((p)->icmp_ip.ip_hl << 2) + 8)
140
141#define ICMP_UNREACH 3
142#define ICMP_SOURCEQUENCH 4
143#define ICMP_ROUTERADVERT 9
144#define ICMP_ROUTERSOLICIT 10
145#define ICMP_TIMXCEED 11
146#define ICMP_PARAMPROB 12
147#define ICMP_TSTAMP 13
148#define ICMP_TSTAMPREPLY 14
149#define ICMP_IREQ 15
150#define ICMP_IREQREPLY 16
151#define ICMP_MASKREQ 17
152#define ICMP_MASKREPLY 18
153#define ICMP_MAXTYPE 18
154
155#define ICMP_UNREACH_NET 0
156#define ICMP_UNREACH_HOST 1
157#define ICMP_UNREACH_PROTOCOL 2
158#define ICMP_UNREACH_PORT 3
159#define ICMP_UNREACH_NEEDFRAG 4
160#define ICMP_UNREACH_SRCFAIL 5
161#define ICMP_UNREACH_NET_UNKNOWN 6
162#define ICMP_UNREACH_HOST_UNKNOWN 7
163#define ICMP_UNREACH_ISOLATED 8
164#define ICMP_UNREACH_NET_PROHIB 9
165#define ICMP_UNREACH_HOST_PROHIB 10
166#define ICMP_UNREACH_TOSNET 11
167#define ICMP_UNREACH_TOSHOST 12
168#define ICMP_UNREACH_FILTER_PROHIB 13
169#define ICMP_UNREACH_HOST_PRECEDENCE 14
170#define ICMP_UNREACH_PRECEDENCE_CUTOFF 15
171
172#define ICMP_REDIRECT_NET 0
173#define ICMP_REDIRECT_HOST 1
174#define ICMP_REDIRECT_TOSNET 2
175#define ICMP_REDIRECT_TOSHOST 3
176
177#define ICMP_TIMXCEED_INTRANS 0
178#define ICMP_TIMXCEED_REASS 1
179
180#define ICMP_PARAMPROB_OPTABSENT 1
181
182#define ICMP_INFOTYPE(type) \
183 ((type) == ICMP_ECHOREPLY || (type) == ICMP_ECHO || \
184 (type) == ICMP_ROUTERADVERT || (type) == ICMP_ROUTERSOLICIT || \
185 (type) == ICMP_TSTAMP || (type) == ICMP_TSTAMPREPLY || \
186 (type) == ICMP_IREQ || (type) == ICMP_IREQREPLY || \
187 (type) == ICMP_MASKREQ || (type) == ICMP_MASKREPLY)
188
189#ifdef __cplusplus
190}
191#endif
192
193#endif