1 | /* |
2 | * Copyright (c) 2008-2018 Apple Inc. All rights reserved. |
3 | * |
4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
5 | * |
6 | * This file contains Original Code and/or Modifications of Original Code |
7 | * as defined in and that are subject to the Apple Public Source License |
8 | * Version 2.0 (the 'License'). You may not use this file except in |
9 | * compliance with the License. The rights granted to you under the License |
10 | * may not be used to create, or enable the creation or redistribution of, |
11 | * unlawful or unlicensed copies of an Apple operating system, or to |
12 | * circumvent, violate, or enable the circumvention or violation of, any |
13 | * terms of an Apple operating system software license agreement. |
14 | * |
15 | * Please obtain a copy of the License at |
16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. |
17 | * |
18 | * The Original Code and all software distributed under the License are |
19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
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23 | * Please see the License for the specific language governing rights and |
24 | * limitations under the License. |
25 | * |
26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
27 | */ |
28 | /* |
29 | * Copyright (c) 1982, 1986, 1993 |
30 | * The Regents of the University of California. All rights reserved. |
31 | * |
32 | * Redistribution and use in source and binary forms, with or without |
33 | * modification, are permitted provided that the following conditions |
34 | * are met: |
35 | * 1. Redistributions of source code must retain the above copyright |
36 | * notice, this list of conditions and the following disclaimer. |
37 | * 2. Redistributions in binary form must reproduce the above copyright |
38 | * notice, this list of conditions and the following disclaimer in the |
39 | * documentation and/or other materials provided with the distribution. |
40 | * 3. All advertising materials mentioning features or use of this software |
41 | * must display the following acknowledgement: |
42 | * This product includes software developed by the University of |
43 | * California, Berkeley and its contributors. |
44 | * 4. Neither the name of the University nor the names of its contributors |
45 | * may be used to endorse or promote products derived from this software |
46 | * without specific prior written permission. |
47 | * |
48 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
49 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
50 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
51 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
52 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
53 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
54 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
55 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
56 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
57 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
58 | * SUCH DAMAGE. |
59 | * |
60 | * @(#)ip_icmp.h 8.1 (Berkeley) 6/10/93 |
61 | * $FreeBSD: src/sys/netinet/ip_icmp.h,v 1.16 1999/12/29 04:41:01 peter Exp $ |
62 | */ |
63 | |
64 | #ifndef _NETINET_IP_ICMP_H_ |
65 | #define _NETINET_IP_ICMP_H_ |
66 | #include <sys/appleapiopts.h> |
67 | |
68 | #include <netinet/in.h> |
69 | #include <netinet/in_systm.h> |
70 | #include <netinet/ip.h> |
71 | #include <sys/types.h> |
72 | |
73 | /* |
74 | * Interface Control Message Protocol Definitions. |
75 | * Per RFC 792, September 1981. |
76 | */ |
77 | |
78 | /* |
79 | * Internal of an ICMP Router Advertisement |
80 | */ |
81 | struct icmp_ra_addr { |
82 | u_int32_t ira_addr; |
83 | u_int32_t ira_preference; |
84 | }; |
85 | |
86 | /* |
87 | * Structure of an icmp header. |
88 | */ |
89 | struct icmp { |
90 | u_char icmp_type; /* type of message, see below */ |
91 | u_char icmp_code; /* type sub code */ |
92 | u_short icmp_cksum; /* ones complement cksum of struct */ |
93 | union { |
94 | u_char ih_pptr; /* ICMP_PARAMPROB */ |
95 | struct in_addr ih_gwaddr; /* ICMP_REDIRECT */ |
96 | struct ih_idseq { |
97 | n_short icd_id; |
98 | n_short icd_seq; |
99 | } ih_idseq; |
100 | int ih_void; |
101 | |
102 | /* ICMP_UNREACH_NEEDFRAG -- Path MTU Discovery (RFC1191) */ |
103 | struct ih_pmtu { |
104 | n_short ipm_void; |
105 | n_short ipm_nextmtu; |
106 | } ih_pmtu; |
107 | |
108 | struct ih_rtradv { |
109 | u_char irt_num_addrs; |
110 | u_char irt_wpa; |
111 | u_int16_t irt_lifetime; |
112 | } ih_rtradv; |
113 | } icmp_hun; |
114 | #define icmp_pptr icmp_hun.ih_pptr |
115 | #define icmp_gwaddr icmp_hun.ih_gwaddr |
116 | #define icmp_id icmp_hun.ih_idseq.icd_id |
117 | #define icmp_seq icmp_hun.ih_idseq.icd_seq |
118 | #define icmp_void icmp_hun.ih_void |
119 | #define icmp_pmvoid icmp_hun.ih_pmtu.ipm_void |
120 | #define icmp_nextmtu icmp_hun.ih_pmtu.ipm_nextmtu |
121 | #define icmp_num_addrs icmp_hun.ih_rtradv.irt_num_addrs |
122 | #define icmp_wpa icmp_hun.ih_rtradv.irt_wpa |
123 | #define icmp_lifetime icmp_hun.ih_rtradv.irt_lifetime |
124 | union { |
125 | struct id_ts { |
126 | n_time its_otime; |
127 | n_time its_rtime; |
128 | n_time its_ttime; |
129 | } id_ts; |
130 | struct id_ip { |
131 | struct ip idi_ip; |
132 | /* options and then 64 bits of data */ |
133 | } id_ip; |
134 | struct icmp_ra_addr id_radv; |
135 | u_int32_t id_mask; |
136 | char id_data[1]; |
137 | } icmp_dun; |
138 | #define icmp_otime icmp_dun.id_ts.its_otime |
139 | #define icmp_rtime icmp_dun.id_ts.its_rtime |
140 | #define icmp_ttime icmp_dun.id_ts.its_ttime |
141 | #define icmp_ip icmp_dun.id_ip.idi_ip |
142 | #define icmp_radv icmp_dun.id_radv |
143 | #define icmp_mask icmp_dun.id_mask |
144 | #define icmp_data icmp_dun.id_data |
145 | }; |
146 | |
147 | /* |
148 | * Lower bounds on packet lengths for various types. |
149 | * For the error advice packets must first insure that the |
150 | * packet is large enough to contain the returned ip header. |
151 | * Only then can we do the check to see if 64 bits of packet |
152 | * data have been returned, since we need to check the returned |
153 | * ip header length. |
154 | */ |
155 | #define ICMP_MINLEN 8 /* abs minimum */ |
156 | #define ICMP_TSLEN (8 + 3 * sizeof (n_time)) /* timestamp */ |
157 | #define ICMP_MASKLEN 12 /* address mask */ |
158 | #define ICMP_ADVLENMIN (8 + sizeof (struct ip) + 8) /* min */ |
159 | #ifndef _IP_VHL |
160 | #define ICMP_ADVLEN(p) (8 + ((p)->icmp_ip.ip_hl << 2) + 8) |
161 | /* N.B.: must separately check that ip_hl >= 5 */ |
162 | #else |
163 | #define ICMP_ADVLEN(p) (8 + (IP_VHL_HL((p)->icmp_ip.ip_vhl) << 2) + 8) |
164 | /* N.B.: must separately check that header length >= 5 */ |
165 | #endif |
166 | |
167 | /* |
168 | * Definition of type and code field values. |
169 | */ |
170 | #define ICMP_ECHOREPLY 0 /* echo reply */ |
171 | #define ICMP_UNREACH 3 /* dest unreachable, codes: */ |
172 | #define ICMP_UNREACH_NET 0 /* bad net */ |
173 | #define ICMP_UNREACH_HOST 1 /* bad host */ |
174 | #define ICMP_UNREACH_PROTOCOL 2 /* bad protocol */ |
175 | #define ICMP_UNREACH_PORT 3 /* bad port */ |
176 | #define ICMP_UNREACH_NEEDFRAG 4 /* IP_DF caused drop */ |
177 | #define ICMP_UNREACH_SRCFAIL 5 /* src route failed */ |
178 | #define ICMP_UNREACH_NET_UNKNOWN 6 /* unknown net */ |
179 | #define ICMP_UNREACH_HOST_UNKNOWN 7 /* unknown host */ |
180 | #define ICMP_UNREACH_ISOLATED 8 /* src host isolated */ |
181 | #define ICMP_UNREACH_NET_PROHIB 9 /* prohibited access */ |
182 | #define ICMP_UNREACH_HOST_PROHIB 10 /* ditto */ |
183 | #define ICMP_UNREACH_TOSNET 11 /* bad tos for net */ |
184 | #define ICMP_UNREACH_TOSHOST 12 /* bad tos for host */ |
185 | #define ICMP_UNREACH_FILTER_PROHIB 13 /* admin prohib */ |
186 | #define ICMP_UNREACH_HOST_PRECEDENCE 14 /* host prec vio. */ |
187 | #define ICMP_UNREACH_PRECEDENCE_CUTOFF 15 /* prec cutoff */ |
188 | #define ICMP_SOURCEQUENCH 4 /* packet lost, slow down */ |
189 | #define ICMP_REDIRECT 5 /* shorter route, codes: */ |
190 | #define ICMP_REDIRECT_NET 0 /* for network */ |
191 | #define ICMP_REDIRECT_HOST 1 /* for host */ |
192 | #define ICMP_REDIRECT_TOSNET 2 /* for tos and net */ |
193 | #define ICMP_REDIRECT_TOSHOST 3 /* for tos and host */ |
194 | #define ICMP_ALTHOSTADDR 6 /* alternate host address */ |
195 | #define ICMP_ECHO 8 /* echo service */ |
196 | #define ICMP_ROUTERADVERT 9 /* router advertisement */ |
197 | #define ICMP_ROUTERADVERT_NORMAL 0 /* normal advertisement */ |
198 | #define ICMP_ROUTERADVERT_NOROUTE_COMMON 16 /* selective routing */ |
199 | #define ICMP_ROUTERSOLICIT 10 /* router solicitation */ |
200 | #define ICMP_TIMXCEED 11 /* time exceeded, code: */ |
201 | #define ICMP_TIMXCEED_INTRANS 0 /* ttl==0 in transit */ |
202 | #define ICMP_TIMXCEED_REASS 1 /* ttl==0 in reass */ |
203 | #define ICMP_PARAMPROB 12 /* ip header bad */ |
204 | #define ICMP_PARAMPROB_ERRATPTR 0 /* error at param ptr */ |
205 | #define ICMP_PARAMPROB_OPTABSENT 1 /* req. opt. absent */ |
206 | #define ICMP_PARAMPROB_LENGTH 2 /* bad length */ |
207 | #define ICMP_TSTAMP 13 /* timestamp request */ |
208 | #define ICMP_TSTAMPREPLY 14 /* timestamp reply */ |
209 | #define ICMP_IREQ 15 /* information request */ |
210 | #define ICMP_IREQREPLY 16 /* information reply */ |
211 | #define ICMP_MASKREQ 17 /* address mask request */ |
212 | #define ICMP_MASKREPLY 18 /* address mask reply */ |
213 | #define ICMP_TRACEROUTE 30 /* traceroute */ |
214 | #define ICMP_DATACONVERR 31 /* data conversion error */ |
215 | #define ICMP_MOBILE_REDIRECT 32 /* mobile host redirect */ |
216 | #define ICMP_IPV6_WHEREAREYOU 33 /* IPv6 where-are-you */ |
217 | #define ICMP_IPV6_IAMHERE 34 /* IPv6 i-am-here */ |
218 | #define ICMP_MOBILE_REGREQUEST 35 /* mobile registration req */ |
219 | #define ICMP_MOBILE_REGREPLY 36 /* mobile registration reply */ |
220 | #define ICMP_SKIP 39 /* SKIP */ |
221 | #define ICMP_PHOTURIS 40 /* Photuris */ |
222 | #define ICMP_PHOTURIS_UNKNOWN_INDEX 1 /* unknown sec index */ |
223 | #define ICMP_PHOTURIS_AUTH_FAILED 2 /* auth failed */ |
224 | #define ICMP_PHOTURIS_DECRYPT_FAILED 3 /* decrypt failed */ |
225 | |
226 | #define ICMP_MAXTYPE 40 |
227 | |
228 | #define ICMP_INFOTYPE(type) \ |
229 | ((type) == ICMP_ECHOREPLY || (type) == ICMP_ECHO || \ |
230 | (type) == ICMP_ROUTERADVERT || (type) == ICMP_ROUTERSOLICIT || \ |
231 | (type) == ICMP_TSTAMP || (type) == ICMP_TSTAMPREPLY || \ |
232 | (type) == ICMP_IREQ || (type) == ICMP_IREQREPLY || \ |
233 | (type) == ICMP_MASKREQ || (type) == ICMP_MASKREPLY) |
234 | |
235 | #define ICMP_ERRORTYPE(type) \ |
236 | ((type) == ICMP_UNREACH || (type) == ICMP_SOURCEQUENCH || \ |
237 | (type) == ICMP_REDIRECT || (type) == ICMP_TIMXCEED || \ |
238 | (type) == ICMP_PARAMPROB) |
239 | |
240 | #ifdef BSD_KERNEL_PRIVATE |
241 | void icmp_error(struct mbuf *, int, int, n_long, u_int32_t); |
242 | void icmp_input(struct mbuf *, int); |
243 | int ip_next_mtu(int, int); |
244 | #endif /* BSD_KERNEL_PRIVATE */ |
245 | #endif /* _NETINET_IP_ICMP_H_ */ |
246 | |