Subversion Repositories SvarDOS

Rev

Rev 616 | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
207 mateuszvis 1
/*!\file netinet/ip_icmp.h
2
 * ICMP definitions.
3
 */
4
 
5
/*
6
 * Copyright (c) 1982, 1986, 1993
7
 *      The Regents of the University of California.  All rights reserved.
8
 *
9
 * Redistribution and use in source and binary forms, with or without
10
 * modification, are permitted provided that the following conditions
11
 * are met:
12
 * 1. Redistributions of source code must retain the above copyright
13
 *    notice, this list of conditions and the following disclaimer.
14
 * 2. Redistributions in binary form must reproduce the above copyright
15
 *    notice, this list of conditions and the following disclaimer in the
16
 *    documentation and/or other materials provided with the distribution.
17
 * 3. All advertising materials mentioning features or use of this software
18
 *    must display the following acknowledgement:
19
 *      This product includes software developed by the University of
20
 *      California, Berkeley and its contributors.
21
 * 4. Neither the name of the University nor the names of its contributors
22
 *    may be used to endorse or promote products derived from this software
23
 *    without specific prior written permission.
24
 *
25
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35
 * SUCH DAMAGE.
36
 *
37
 *      @(#)ip_icmp.h   8.1 (Berkeley) 6/10/93
38
 * $Id: ip_icmp.h,v 1.9 1996/08/20 23:11:30 fenner Exp $
39
 */
40
 
41
#ifndef __NETINET_IP_ICMP_H
42
#define __NETINET_IP_ICMP_H
43
 
44
#include <sys/packon.h>
45
 
46
/*
47
 * Interface Control Message Protocol Definitions.
48
 * Per RFC 792, September 1981.
49
 */
50
 
51
/*
52
 * Internal of an ICMP Router Advertisement
53
 */
54
struct icmp_ra_addr {
55
        u_int32_t ira_addr;
56
        u_int32_t ira_preference;
57
};
58
 
59
/*
60
 * Structure of an icmp header.
61
 */
62
struct icmp {
63
        u_char  icmp_type;              /* type of message, see below */
64
        u_char  icmp_code;              /* type sub code */
65
        u_short icmp_cksum;             /* ones complement cksum of struct */
66
        union {
67
                u_char ih_pptr;                 /* ICMP_PARAMPROB */
68
                struct in_addr ih_gwaddr;       /* ICMP_REDIRECT */
69
                struct ih_idseq {
70
                        n_short icd_id;
71
                        n_short icd_seq;
72
                } ih_idseq;
73
                u_int32_t ih_void;     /* was 'int' */
74
 
75
                /* ICMP_UNREACH_NEEDFRAG -- Path MTU Discovery (RFC1191) */
76
                struct ih_pmtu {
77
                        n_short ipm_void;
78
                        n_short ipm_nextmtu;
79
                } ih_pmtu;
80
 
81
                struct ih_rtradv {
82
                        u_char irt_num_addrs;
83
                        u_char irt_wpa;
84
                        u_int16_t irt_lifetime;
85
                } ih_rtradv;
86
        } icmp_hun;
87
#define icmp_pptr       icmp_hun.ih_pptr
88
#define icmp_gwaddr     icmp_hun.ih_gwaddr
89
#define icmp_id         icmp_hun.ih_idseq.icd_id
90
#define icmp_seq        icmp_hun.ih_idseq.icd_seq
91
#define icmp_void       icmp_hun.ih_void
92
#define icmp_pmvoid     icmp_hun.ih_pmtu.ipm_void
93
#define icmp_nextmtu    icmp_hun.ih_pmtu.ipm_nextmtu
94
#define icmp_num_addrs  icmp_hun.ih_rtradv.irt_num_addrs
95
#define icmp_wpa        icmp_hun.ih_rtradv.irt_wpa
96
#define icmp_lifetime   icmp_hun.ih_rtradv.irt_lifetime
97
        union {
98
                struct id_ts {
99
                        n_time its_otime;
100
                        n_time its_rtime;
101
                        n_time its_ttime;
102
                } id_ts;
103
                struct id_ip  {
104
                        struct ip idi_ip;
105
                        /* options and then 64 bits of data */
106
                } id_ip;
107
                struct icmp_ra_addr id_radv;
108
                u_long  id_mask;
109
                char    id_data[1];
110
        } icmp_dun;
111
#define icmp_otime      icmp_dun.id_ts.its_otime
112
#define icmp_rtime      icmp_dun.id_ts.its_rtime
113
#define icmp_ttime      icmp_dun.id_ts.its_ttime
114
#define icmp_ip         icmp_dun.id_ip.idi_ip
115
#define icmp_radv       icmp_dun.id_radv
116
#define icmp_mask       icmp_dun.id_mask
117
#define icmp_data       icmp_dun.id_data
118
};
119
 
120
#include <sys/packoff.h>
121
 
122
/*
123
 * Lower bounds on packet lengths for various types.
124
 * For the error advice packets must first insure that the
125
 * packet is large enough to contain the returned ip header.
126
 * Only then can we do the check to see if 64 bits of packet
127
 * data have been returned, since we need to check the returned
128
 * ip header length.
129
 */
130
#define ICMP_MINLEN     8                               /* abs minimum */
131
#define ICMP_TSLEN      (8 + 3 * sizeof (n_time))       /* timestamp */
132
#define ICMP_MASKLEN    12                              /* address mask */
133
#define ICMP_ADVLENMIN  (8 + sizeof (struct ip) + 8)    /* min */
134
#ifndef _IP_VHL
135
#define ICMP_ADVLEN(p)  (8 + ((p)->icmp_ip.ip_hl << 2) + 8)
136
        /* N.B.: must separately check that ip_hl >= 5 */
137
#else
138
#define ICMP_ADVLEN(p)  (8 + (IP_VHL_HL((p)->icmp_ip.ip_vhl) << 2) + 8)
139
        /* N.B.: must separately check that header length >= 5 */
140
#endif
141
 
142
/*
143
 * Definition of type and code field values.
144
 */
145
#define ICMP_ECHOREPLY          0               /* echo reply */
146
#define ICMP_UNREACH            3               /* dest unreachable, codes: */
147
#define         ICMP_UNREACH_NET        0               /* bad net */
148
#define         ICMP_UNREACH_HOST       1               /* bad host */
149
#define         ICMP_UNREACH_PROTOCOL   2               /* bad protocol */
150
#define         ICMP_UNREACH_PORT       3               /* bad port */
151
#define         ICMP_UNREACH_NEEDFRAG   4               /* IP_DF caused drop */
152
#define         ICMP_UNREACH_SRCFAIL    5               /* src route failed */
153
#define         ICMP_UNREACH_NET_UNKNOWN 6              /* unknown net */
154
#define         ICMP_UNREACH_HOST_UNKNOWN 7             /* unknown host */
155
#define         ICMP_UNREACH_ISOLATED   8               /* src host isolated */
156
#define         ICMP_UNREACH_NET_PROHIB 9               /* prohibited access */
157
#define         ICMP_UNREACH_HOST_PROHIB 10             /* ditto */
158
#define         ICMP_UNREACH_TOSNET     11              /* bad tos for net */
159
#define         ICMP_UNREACH_TOSHOST    12              /* bad tos for host */
160
#define         ICMP_UNREACH_FILTER_PROHIB 13           /* admin prohib */
161
#define         ICMP_UNREACH_HOST_PRECEDENCE 14         /* host prec vio. */
162
#define         ICMP_UNREACH_PRECEDENCE_CUTOFF 15       /* prec cutoff */
163
#define ICMP_SOURCEQUENCH       4               /* packet lost, slow down */
164
#define ICMP_REDIRECT           5               /* shorter route, codes: */
165
#define         ICMP_REDIRECT_NET       0               /* for network */
166
#define         ICMP_REDIRECT_HOST      1               /* for host */
167
#define         ICMP_REDIRECT_TOSNET    2               /* for tos and net */
168
#define         ICMP_REDIRECT_TOSHOST   3               /* for tos and host */
169
#define ICMP_ECHO               8               /* echo service */
170
#define ICMP_ROUTERADVERT       9               /* router advertisement */
171
#define ICMP_ROUTERSOLICIT      10              /* router solicitation */
172
#define ICMP_TIMXCEED           11              /* time exceeded, code: */
173
#define         ICMP_TIMXCEED_INTRANS   0               /* ttl==0 in transit */
174
#define         ICMP_TIMXCEED_REASS     1               /* ttl==0 in reass */
175
#define ICMP_PARAMPROB          12              /* ip header bad */
176
#define         ICMP_PARAMPROB_OPTABSENT 1              /* req. opt. absent */
177
#define ICMP_TSTAMP             13              /* timestamp request */
178
#define ICMP_TSTAMPREPLY        14              /* timestamp reply */
179
#define ICMP_IREQ               15              /* information request */
180
#define ICMP_IREQREPLY          16              /* information reply */
181
#define ICMP_MASKREQ            17              /* address mask request */
182
#define ICMP_MASKREPLY          18              /* address mask reply */
183
 
184
#ifndef ICMP_MAXTYPE
185
#define ICMP_MAXTYPE            18
186
#endif
187
 
188
#define ICMP_INFOTYPE(type) \
189
        ((type) == ICMP_ECHOREPLY || (type) == ICMP_ECHO || \
190
        (type) == ICMP_ROUTERADVERT || (type) == ICMP_ROUTERSOLICIT || \
191
        (type) == ICMP_TSTAMP || (type) == ICMP_TSTAMPREPLY || \
192
        (type) == ICMP_IREQ || (type) == ICMP_IREQREPLY || \
193
        (type) == ICMP_MASKREQ || (type) == ICMP_MASKREPLY)
194
 
195
#endif