root / lab4 / .minix-src / include / netinet / ip_icmp.h @ 13
History | View | Annotate | Download (9.8 KB)
| 1 |
/* $NetBSD: ip_icmp.h,v 1.34 2015/02/18 17:00:15 christos Exp $ */
|
|---|---|
| 2 |
|
| 3 |
/*
|
| 4 |
* Copyright (c) 1982, 1986, 1993
|
| 5 |
* The Regents of the University of California. All rights reserved.
|
| 6 |
*
|
| 7 |
* Redistribution and use in source and binary forms, with or without
|
| 8 |
* modification, are permitted provided that the following conditions
|
| 9 |
* are met:
|
| 10 |
* 1. Redistributions of source code must retain the above copyright
|
| 11 |
* notice, this list of conditions and the following disclaimer.
|
| 12 |
* 2. Redistributions in binary form must reproduce the above copyright
|
| 13 |
* notice, this list of conditions and the following disclaimer in the
|
| 14 |
* documentation and/or other materials provided with the distribution.
|
| 15 |
* 3. Neither the name of the University nor the names of its contributors
|
| 16 |
* may be used to endorse or promote products derived from this software
|
| 17 |
* without specific prior written permission.
|
| 18 |
*
|
| 19 |
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
| 20 |
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
| 21 |
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
| 22 |
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
| 23 |
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
| 24 |
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
| 25 |
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
| 26 |
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
| 27 |
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
| 28 |
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
| 29 |
* SUCH DAMAGE.
|
| 30 |
*
|
| 31 |
* @(#)ip_icmp.h 8.1 (Berkeley) 6/10/93
|
| 32 |
*/
|
| 33 |
|
| 34 |
#ifndef _NETINET_IP_ICMP_H_
|
| 35 |
#define _NETINET_IP_ICMP_H_
|
| 36 |
|
| 37 |
|
| 38 |
/*
|
| 39 |
* Interface Control Message Protocol Definitions.
|
| 40 |
* Per RFC 792, September 1981.
|
| 41 |
*/
|
| 42 |
|
| 43 |
/*
|
| 44 |
* Internal of an ICMP Router Advertisement
|
| 45 |
*/
|
| 46 |
struct icmp_ra_addr {
|
| 47 |
u_int32_t ira_addr; |
| 48 |
u_int32_t ira_preference; |
| 49 |
} __packed; |
| 50 |
|
| 51 |
/*
|
| 52 |
* Structure of an icmp header.
|
| 53 |
*/
|
| 54 |
struct icmp {
|
| 55 |
u_int8_t icmp_type; /* type of message, see below */
|
| 56 |
u_int8_t icmp_code; /* type sub code */
|
| 57 |
u_int16_t icmp_cksum; /* ones complement cksum of struct */
|
| 58 |
union {
|
| 59 |
u_int8_t ih_pptr; /* ICMP_PARAMPROB */
|
| 60 |
struct in_addr ih_gwaddr; /* ICMP_REDIRECT */ |
| 61 |
struct ih_idseq {
|
| 62 |
n_short icd_id; |
| 63 |
n_short icd_seq; |
| 64 |
} ih_idseq __packed; |
| 65 |
int32_t ih_void; |
| 66 |
|
| 67 |
/* ICMP_UNREACH_NEEDFRAG -- Path MTU Discovery (RFC1191) */
|
| 68 |
struct ih_pmtu {
|
| 69 |
n_short ipm_void; |
| 70 |
n_short ipm_nextmtu; |
| 71 |
} ih_pmtu __packed; |
| 72 |
struct ih_rtradv {
|
| 73 |
u_int8_t irt_num_addrs; |
| 74 |
u_int8_t irt_wpa; |
| 75 |
u_int16_t irt_lifetime; |
| 76 |
} ih_rtradv __packed; |
| 77 |
} icmp_hun /* XXX __packed ??? */;
|
| 78 |
#define icmp_pptr icmp_hun.ih_pptr
|
| 79 |
#define icmp_gwaddr icmp_hun.ih_gwaddr
|
| 80 |
#define icmp_id icmp_hun.ih_idseq.icd_id
|
| 81 |
#define icmp_seq icmp_hun.ih_idseq.icd_seq
|
| 82 |
#define icmp_void icmp_hun.ih_void
|
| 83 |
#define icmp_pmvoid icmp_hun.ih_pmtu.ipm_void
|
| 84 |
#define icmp_nextmtu icmp_hun.ih_pmtu.ipm_nextmtu
|
| 85 |
#define icmp_num_addrs icmp_hun.ih_rtradv.irt_num_addrs
|
| 86 |
#define icmp_wpa icmp_hun.ih_rtradv.irt_wpa
|
| 87 |
#define icmp_lifetime icmp_hun.ih_rtradv.irt_lifetime
|
| 88 |
union {
|
| 89 |
struct id_ts {
|
| 90 |
n_time its_otime; |
| 91 |
n_time its_rtime; |
| 92 |
n_time its_ttime; |
| 93 |
} id_ts __packed; |
| 94 |
struct id_ip {
|
| 95 |
struct ip idi_ip;
|
| 96 |
/* options and then 64 bits of data */
|
| 97 |
} id_ip /* XXX: __packed ??? */;
|
| 98 |
struct icmp_ra_addr id_radv;
|
| 99 |
u_int32_t id_mask; |
| 100 |
int8_t id_data[1];
|
| 101 |
} icmp_dun /* XXX __packed ??? */;
|
| 102 |
#define icmp_otime icmp_dun.id_ts.its_otime
|
| 103 |
#define icmp_rtime icmp_dun.id_ts.its_rtime
|
| 104 |
#define icmp_ttime icmp_dun.id_ts.its_ttime
|
| 105 |
#define icmp_ip icmp_dun.id_ip.idi_ip
|
| 106 |
#define icmp_radv icmp_dun.id_mask
|
| 107 |
#define icmp_mask icmp_dun.id_mask
|
| 108 |
#define icmp_data icmp_dun.id_data
|
| 109 |
}; |
| 110 |
|
| 111 |
/*
|
| 112 |
* Lower bounds on packet lengths for various types.
|
| 113 |
* For the error advice packets must first insure that the
|
| 114 |
* packet is large enought to contain the returned ip header.
|
| 115 |
* Only then can we do the check to see if 64 bits of packet
|
| 116 |
* data have been returned, since we need to check the returned
|
| 117 |
* ip header length.
|
| 118 |
*/
|
| 119 |
#define ICMP_MINLEN 8 /* abs minimum */ |
| 120 |
#define ICMP_TSLEN (8 + 3 * sizeof (n_time)) /* timestamp */ |
| 121 |
#define ICMP_MASKLEN 12 /* address mask */ |
| 122 |
#define ICMP_ADVLENMIN (8 + sizeof (struct ip) + 8) /* min */ |
| 123 |
#define ICMP_ADVLEN(p) (8 + ((p)->icmp_ip.ip_hl << 2) + 8) |
| 124 |
/* N.B.: must separately check that ip_hl >= 5 */
|
| 125 |
|
| 126 |
/*
|
| 127 |
* Definition of type and code field values.
|
| 128 |
*/
|
| 129 |
#define ICMP_ECHOREPLY 0 /* echo reply */ |
| 130 |
#define ICMP_UNREACH 3 /* dest unreachable, codes: */ |
| 131 |
#define ICMP_UNREACH_NET 0 /* bad net */ |
| 132 |
#define ICMP_UNREACH_HOST 1 /* bad host */ |
| 133 |
#define ICMP_UNREACH_PROTOCOL 2 /* bad protocol */ |
| 134 |
#define ICMP_UNREACH_PORT 3 /* bad port */ |
| 135 |
#define ICMP_UNREACH_NEEDFRAG 4 /* IP_DF caused drop */ |
| 136 |
#define ICMP_UNREACH_SRCFAIL 5 /* src route failed */ |
| 137 |
#define ICMP_UNREACH_NET_UNKNOWN 6 /* unknown net */ |
| 138 |
#define ICMP_UNREACH_HOST_UNKNOWN 7 /* unknown host */ |
| 139 |
#define ICMP_UNREACH_ISOLATED 8 /* src host isolated */ |
| 140 |
#define ICMP_UNREACH_NET_PROHIB 9 /* prohibited access */ |
| 141 |
#define ICMP_UNREACH_HOST_PROHIB 10 /* ditto */ |
| 142 |
#define ICMP_UNREACH_TOSNET 11 /* bad tos for net */ |
| 143 |
#define ICMP_UNREACH_TOSHOST 12 /* bad tos for host */ |
| 144 |
#define ICMP_UNREACH_ADMIN_PROHIBIT 13 /* communication |
| 145 |
administratively
|
| 146 |
prohibited */
|
| 147 |
#define ICMP_UNREACH_HOST_PREC 14 /* host precedence |
| 148 |
violation */
|
| 149 |
#define ICMP_UNREACH_PREC_CUTOFF 15 /* precedence cutoff */ |
| 150 |
#define ICMP_SOURCEQUENCH 4 /* packet lost, slow down */ |
| 151 |
#define ICMP_REDIRECT 5 /* shorter route, codes: */ |
| 152 |
#define ICMP_REDIRECT_NET 0 /* for network */ |
| 153 |
#define ICMP_REDIRECT_HOST 1 /* for host */ |
| 154 |
#define ICMP_REDIRECT_TOSNET 2 /* for tos and net */ |
| 155 |
#define ICMP_REDIRECT_TOSHOST 3 /* for tos and host */ |
| 156 |
#define ICMP_ALTHOSTADDR 6 /* alternative host address */ |
| 157 |
#define ICMP_ECHO 8 /* echo service */ |
| 158 |
#define ICMP_ROUTERADVERT 9 /* router advertisement */ |
| 159 |
#define ICMP_ROUTERADVERT_NORMAL 0 |
| 160 |
#define ICMP_ROUTERADVERT_NOROUTE 16 |
| 161 |
#define ICMP_ROUTERSOLICIT 10 /* router solicitation */ |
| 162 |
#define ICMP_TIMXCEED 11 /* time exceeded, code: */ |
| 163 |
#define ICMP_TIMXCEED_INTRANS 0 /* ttl==0 in transit */ |
| 164 |
#define ICMP_TIMXCEED_REASS 1 /* ttl==0 in reass */ |
| 165 |
#define ICMP_PARAMPROB 12 /* ip header bad */ |
| 166 |
#define ICMP_PARAMPROB_ERRATPTR 0 |
| 167 |
#define ICMP_PARAMPROB_OPTABSENT 1 |
| 168 |
#define ICMP_PARAMPROB_LENGTH 2 |
| 169 |
#define ICMP_TSTAMP 13 /* timestamp request */ |
| 170 |
#define ICMP_TSTAMPREPLY 14 /* timestamp reply */ |
| 171 |
#define ICMP_IREQ 15 /* information request */ |
| 172 |
#define ICMP_IREQREPLY 16 /* information reply */ |
| 173 |
#define ICMP_MASKREQ 17 /* address mask request */ |
| 174 |
#define ICMP_MASKREPLY 18 /* address mask reply */ |
| 175 |
#define ICMP_TRACEROUTE 30 /* traceroute */ |
| 176 |
#define ICMP_DATACONVERR 31 /* data conversion error */ |
| 177 |
#define ICMP_MOBILE_REDIRECT 32 /* mobile redirect */ |
| 178 |
#define ICMP_IPV6_WHEREAREYOU 33 /* ipv6 where are you */ |
| 179 |
#define ICMP_IPV6_IAMHERE 34 /* ipv6 i am here */ |
| 180 |
#define ICMP_MOBILE_REGREQUEST 35 /* mobile registration req */ |
| 181 |
#define ICMP_MOBILE_REGREPLY 36 /* mobile registration reply */ |
| 182 |
#define ICMP_SKIP 39 /* SKIP */ |
| 183 |
#define ICMP_PHOTURIS 40 /* security */ |
| 184 |
#define ICMP_PHOTURIS_UNKNOWN_INDEX 0 /* unknown sec index */ |
| 185 |
#define ICMP_PHOTURIS_AUTH_FAILED 1 /* auth failed */ |
| 186 |
#define ICMP_PHOTURIS_DECOMPRESS_FAILED 2 /* decompress failed */ |
| 187 |
#define ICMP_PHOTURIS_DECRYPT_FAILED 3 /* decrypt failed */ |
| 188 |
#define ICMP_PHOTURIS_NEED_AUTHN 4 /* no authentication */ |
| 189 |
#define ICMP_PHOTURIS_NEED_AUTHZ 5 /* no authorization */ |
| 190 |
|
| 191 |
#define ICMP_MAXTYPE 40 |
| 192 |
#define ICMP_NTYPES (ICMP_MAXTYPE + 1) |
| 193 |
|
| 194 |
#ifdef ICMP_STRINGS
|
| 195 |
static const char *icmp_type[] = { |
| 196 |
"echoreply", "unassigned_1", "unassigned_2", "unreach", |
| 197 |
"sourcequench", "redirect", "althostaddr", "unassigned_7", |
| 198 |
"echo", "routeradvert", "routersolicit", "timxceed", |
| 199 |
"paramprob", "tstamp", "tstampreply", "ireq", |
| 200 |
"ireqreply", "maskreq", "maskreply", "reserved_19", |
| 201 |
"reserved_20", "reserved_21", "reserved_22", "reserved_23", |
| 202 |
"reserved_24", "reserved_25", "reserved_26", "reserved_27", |
| 203 |
"reserved_28", "reserved_29", "traceroute", "dataconverr", |
| 204 |
"mobile_redirect", "ipv6_whereareyou", "ipv6_iamhere", |
| 205 |
"mobile_regrequest", "mobile_regreply", "reserved_37", |
| 206 |
"reserved_38", "skip", "photuris", NULL |
| 207 |
}; |
| 208 |
static const char *icmp_code_none[] = { "none", NULL }; |
| 209 |
static const char *icmp_code_unreach[] = { |
| 210 |
"net", "host", "oprt", "needfrag", "srcfail", "net_unknown", |
| 211 |
"host_unknown", "isolated", "net_prohib", "host_prohib", |
| 212 |
"tosnet", "toshost", "admin_prohibit", "host_prec", "prec_cutoff", NULL |
| 213 |
}; |
| 214 |
static const char *icmp_code_redirect[] = { |
| 215 |
"net", "host", "tosnet", "toshost", NULL |
| 216 |
}; |
| 217 |
static const char *icmp_code_routeradvert[] = { |
| 218 |
"normal", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", |
| 219 |
"noroute", NULL |
| 220 |
}; |
| 221 |
static const char *icmp_code_timxceed[] = { |
| 222 |
"intrans", "reass", NULL |
| 223 |
}; |
| 224 |
static const char *icmp_code_paramprob[] = { |
| 225 |
"erratptr", "optabsent", "length", NULL |
| 226 |
}; |
| 227 |
static const char *icmp_code_photuris[] = { |
| 228 |
"unknown_index", "auth_failed", "decompress_failed", |
| 229 |
"decrypt_failed", "need_authn", "need_authz", NULL |
| 230 |
}; |
| 231 |
#endif
|
| 232 |
|
| 233 |
#define ICMP_INFOTYPE(type) \
|
| 234 |
((type) == ICMP_ECHOREPLY || (type) == ICMP_ECHO || \ |
| 235 |
(type) == ICMP_ROUTERADVERT || (type) == ICMP_ROUTERSOLICIT || \ |
| 236 |
(type) == ICMP_TSTAMP || (type) == ICMP_TSTAMPREPLY || \ |
| 237 |
(type) == ICMP_IREQ || (type) == ICMP_IREQREPLY || \ |
| 238 |
(type) == ICMP_MASKREQ || (type) == ICMP_MASKREPLY) |
| 239 |
|
| 240 |
#ifdef _KERNEL
|
| 241 |
void icmp_error(struct mbuf *, int, int, n_long, int); |
| 242 |
void icmp_mtudisc(struct icmp *, struct in_addr); |
| 243 |
void icmp_input(struct mbuf *, ...); |
| 244 |
void icmp_init(void); |
| 245 |
void icmp_reflect(struct mbuf *); |
| 246 |
void icmp_send(struct mbuf *, struct mbuf *); |
| 247 |
int icmp_sysctl(int *, u_int, void *, size_t *, void *, size_t); |
| 248 |
|
| 249 |
void icmp_mtudisc_callback_register(void (*)(struct in_addr)); |
| 250 |
int icmp_ratelimit(const struct in_addr *, const int, const int); |
| 251 |
#endif
|
| 252 |
|
| 253 |
|
| 254 |
#endif /* !_NETINET_IP_ICMP_H_ */ |