root / slirp / ip_icmp.h @ 89fc88da
History | View | Annotate | Download (6.3 kB)
1 |
/*
|
---|---|
2 |
* Copyright (c) 1982, 1986, 1993
|
3 |
* The Regents of the University of California. All rights reserved.
|
4 |
*
|
5 |
* Redistribution and use in source and binary forms, with or without
|
6 |
* modification, are permitted provided that the following conditions
|
7 |
* are met:
|
8 |
* 1. Redistributions of source code must retain the above copyright
|
9 |
* notice, this list of conditions and the following disclaimer.
|
10 |
* 2. Redistributions in binary form must reproduce the above copyright
|
11 |
* notice, this list of conditions and the following disclaimer in the
|
12 |
* documentation and/or other materials provided with the distribution.
|
13 |
* 3. All advertising materials mentioning features or use of this software
|
14 |
* must display the following acknowledgement:
|
15 |
* This product includes software developed by the University of
|
16 |
* California, Berkeley and its contributors.
|
17 |
* 4. Neither the name of the University nor the names of its contributors
|
18 |
* may be used to endorse or promote products derived from this software
|
19 |
* without specific prior written permission.
|
20 |
*
|
21 |
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
22 |
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
23 |
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
24 |
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
25 |
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
26 |
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
27 |
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
28 |
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
29 |
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
30 |
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
31 |
* SUCH DAMAGE.
|
32 |
*
|
33 |
* @(#)ip_icmp.h 8.1 (Berkeley) 6/10/93
|
34 |
* ip_icmp.h,v 1.4 1995/05/30 08:09:43 rgrimes Exp
|
35 |
*/
|
36 |
|
37 |
#ifndef _NETINET_IP_ICMP_H_
|
38 |
#define _NETINET_IP_ICMP_H_
|
39 |
|
40 |
/*
|
41 |
* Interface Control Message Protocol Definitions.
|
42 |
* Per RFC 792, September 1981.
|
43 |
*/
|
44 |
|
45 |
typedef u_int32_t n_time;
|
46 |
|
47 |
/*
|
48 |
* Structure of an icmp header.
|
49 |
*/
|
50 |
struct icmp {
|
51 |
u_char icmp_type; /* type of message, see below */
|
52 |
u_char icmp_code; /* type sub code */
|
53 |
u_short icmp_cksum; /* ones complement cksum of struct */
|
54 |
union {
|
55 |
u_char ih_pptr; /* ICMP_PARAMPROB */
|
56 |
struct in_addr ih_gwaddr; /* ICMP_REDIRECT */ |
57 |
struct ih_idseq {
|
58 |
u_short icd_id; |
59 |
u_short icd_seq; |
60 |
} ih_idseq; |
61 |
int ih_void;
|
62 |
|
63 |
/* ICMP_UNREACH_NEEDFRAG -- Path MTU Discovery (RFC1191) */
|
64 |
struct ih_pmtu {
|
65 |
u_short ipm_void; |
66 |
u_short ipm_nextmtu; |
67 |
} ih_pmtu; |
68 |
} icmp_hun; |
69 |
#define icmp_pptr icmp_hun.ih_pptr
|
70 |
#define icmp_gwaddr icmp_hun.ih_gwaddr
|
71 |
#define icmp_id icmp_hun.ih_idseq.icd_id
|
72 |
#define icmp_seq icmp_hun.ih_idseq.icd_seq
|
73 |
#define icmp_void icmp_hun.ih_void
|
74 |
#define icmp_pmvoid icmp_hun.ih_pmtu.ipm_void
|
75 |
#define icmp_nextmtu icmp_hun.ih_pmtu.ipm_nextmtu
|
76 |
union {
|
77 |
struct id_ts {
|
78 |
n_time its_otime; |
79 |
n_time its_rtime; |
80 |
n_time its_ttime; |
81 |
} id_ts; |
82 |
struct id_ip {
|
83 |
struct ip idi_ip;
|
84 |
/* options and then 64 bits of data */
|
85 |
} id_ip; |
86 |
uint32_t id_mask; |
87 |
char id_data[1]; |
88 |
} icmp_dun; |
89 |
#define icmp_otime icmp_dun.id_ts.its_otime
|
90 |
#define icmp_rtime icmp_dun.id_ts.its_rtime
|
91 |
#define icmp_ttime icmp_dun.id_ts.its_ttime
|
92 |
#define icmp_ip icmp_dun.id_ip.idi_ip
|
93 |
#define icmp_mask icmp_dun.id_mask
|
94 |
#define icmp_data icmp_dun.id_data
|
95 |
}; |
96 |
|
97 |
/*
|
98 |
* Lower bounds on packet lengths for various types.
|
99 |
* For the error advice packets must first insure that the
|
100 |
* packet is large enought to contain the returned ip header.
|
101 |
* Only then can we do the check to see if 64 bits of packet
|
102 |
* data have been returned, since we need to check the returned
|
103 |
* ip header length.
|
104 |
*/
|
105 |
#define ICMP_MINLEN 8 /* abs minimum */ |
106 |
#define ICMP_TSLEN (8 + 3 * sizeof (n_time)) /* timestamp */ |
107 |
#define ICMP_MASKLEN 12 /* address mask */ |
108 |
#define ICMP_ADVLENMIN (8 + sizeof (struct ip) + 8) /* min */ |
109 |
#define ICMP_ADVLEN(p) (8 + ((p)->icmp_ip.ip_hl << 2) + 8) |
110 |
/* N.B.: must separately check that ip_hl >= 5 */
|
111 |
|
112 |
/*
|
113 |
* Definition of type and code field values.
|
114 |
*/
|
115 |
#define ICMP_ECHOREPLY 0 /* echo reply */ |
116 |
#define ICMP_UNREACH 3 /* dest unreachable, codes: */ |
117 |
#define ICMP_UNREACH_NET 0 /* bad net */ |
118 |
#define ICMP_UNREACH_HOST 1 /* bad host */ |
119 |
#define ICMP_UNREACH_PROTOCOL 2 /* bad protocol */ |
120 |
#define ICMP_UNREACH_PORT 3 /* bad port */ |
121 |
#define ICMP_UNREACH_NEEDFRAG 4 /* IP_DF caused drop */ |
122 |
#define ICMP_UNREACH_SRCFAIL 5 /* src route failed */ |
123 |
#define ICMP_UNREACH_NET_UNKNOWN 6 /* unknown net */ |
124 |
#define ICMP_UNREACH_HOST_UNKNOWN 7 /* unknown host */ |
125 |
#define ICMP_UNREACH_ISOLATED 8 /* src host isolated */ |
126 |
#define ICMP_UNREACH_NET_PROHIB 9 /* prohibited access */ |
127 |
#define ICMP_UNREACH_HOST_PROHIB 10 /* ditto */ |
128 |
#define ICMP_UNREACH_TOSNET 11 /* bad tos for net */ |
129 |
#define ICMP_UNREACH_TOSHOST 12 /* bad tos for host */ |
130 |
#define ICMP_SOURCEQUENCH 4 /* packet lost, slow down */ |
131 |
#define ICMP_REDIRECT 5 /* shorter route, codes: */ |
132 |
#define ICMP_REDIRECT_NET 0 /* for network */ |
133 |
#define ICMP_REDIRECT_HOST 1 /* for host */ |
134 |
#define ICMP_REDIRECT_TOSNET 2 /* for tos and net */ |
135 |
#define ICMP_REDIRECT_TOSHOST 3 /* for tos and host */ |
136 |
#define ICMP_ECHO 8 /* echo service */ |
137 |
#define ICMP_ROUTERADVERT 9 /* router advertisement */ |
138 |
#define ICMP_ROUTERSOLICIT 10 /* router solicitation */ |
139 |
#define ICMP_TIMXCEED 11 /* time exceeded, code: */ |
140 |
#define ICMP_TIMXCEED_INTRANS 0 /* ttl==0 in transit */ |
141 |
#define ICMP_TIMXCEED_REASS 1 /* ttl==0 in reass */ |
142 |
#define ICMP_PARAMPROB 12 /* ip header bad */ |
143 |
#define ICMP_PARAMPROB_OPTABSENT 1 /* req. opt. absent */ |
144 |
#define ICMP_TSTAMP 13 /* timestamp request */ |
145 |
#define ICMP_TSTAMPREPLY 14 /* timestamp reply */ |
146 |
#define ICMP_IREQ 15 /* information request */ |
147 |
#define ICMP_IREQREPLY 16 /* information reply */ |
148 |
#define ICMP_MASKREQ 17 /* address mask request */ |
149 |
#define ICMP_MASKREPLY 18 /* address mask reply */ |
150 |
|
151 |
#define ICMP_MAXTYPE 18 |
152 |
|
153 |
#define ICMP_INFOTYPE(type) \
|
154 |
((type) == ICMP_ECHOREPLY || (type) == ICMP_ECHO || \ |
155 |
(type) == ICMP_ROUTERADVERT || (type) == ICMP_ROUTERSOLICIT || \ |
156 |
(type) == ICMP_TSTAMP || (type) == ICMP_TSTAMPREPLY || \ |
157 |
(type) == ICMP_IREQ || (type) == ICMP_IREQREPLY || \ |
158 |
(type) == ICMP_MASKREQ || (type) == ICMP_MASKREPLY) |
159 |
|
160 |
void icmp_input _P((struct mbuf *, int)); |
161 |
void icmp_error _P((struct mbuf *, u_char, u_char, int, char *)); |
162 |
void icmp_reflect _P((struct mbuf *)); |
163 |
|
164 |
#endif
|