257 lines
9.9 KiB
C
257 lines
9.9 KiB
C
/* $NetBSD: ip_icmp.h,v 1.35 2017/02/17 04:32:10 ozaki-r Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1982, 1986, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* @(#)ip_icmp.h 8.1 (Berkeley) 6/10/93
|
|
*/
|
|
|
|
#ifndef _NETINET_IP_ICMP_H_
|
|
#define _NETINET_IP_ICMP_H_
|
|
|
|
|
|
/*
|
|
* Interface Control Message Protocol Definitions.
|
|
* Per RFC 792, September 1981.
|
|
*/
|
|
|
|
/*
|
|
* Internal of an ICMP Router Advertisement
|
|
*/
|
|
struct icmp_ra_addr {
|
|
u_int32_t ira_addr;
|
|
u_int32_t ira_preference;
|
|
} __packed;
|
|
|
|
/*
|
|
* Structure of an icmp header.
|
|
*/
|
|
struct icmp {
|
|
u_int8_t icmp_type; /* type of message, see below */
|
|
u_int8_t icmp_code; /* type sub code */
|
|
u_int16_t icmp_cksum; /* ones complement cksum of struct */
|
|
union {
|
|
u_int8_t ih_pptr; /* ICMP_PARAMPROB */
|
|
struct in_addr ih_gwaddr; /* ICMP_REDIRECT */
|
|
struct ih_idseq {
|
|
n_short icd_id;
|
|
n_short icd_seq;
|
|
} ih_idseq __packed;
|
|
int32_t ih_void;
|
|
|
|
/* ICMP_UNREACH_NEEDFRAG -- Path MTU Discovery (RFC1191) */
|
|
struct ih_pmtu {
|
|
n_short ipm_void;
|
|
n_short ipm_nextmtu;
|
|
} ih_pmtu __packed;
|
|
struct ih_rtradv {
|
|
u_int8_t irt_num_addrs;
|
|
u_int8_t irt_wpa;
|
|
u_int16_t irt_lifetime;
|
|
} ih_rtradv __packed;
|
|
} icmp_hun /* XXX __packed ??? */;
|
|
#define icmp_pptr icmp_hun.ih_pptr
|
|
#define icmp_gwaddr icmp_hun.ih_gwaddr
|
|
#define icmp_id icmp_hun.ih_idseq.icd_id
|
|
#define icmp_seq icmp_hun.ih_idseq.icd_seq
|
|
#define icmp_void icmp_hun.ih_void
|
|
#define icmp_pmvoid icmp_hun.ih_pmtu.ipm_void
|
|
#define icmp_nextmtu icmp_hun.ih_pmtu.ipm_nextmtu
|
|
#define icmp_num_addrs icmp_hun.ih_rtradv.irt_num_addrs
|
|
#define icmp_wpa icmp_hun.ih_rtradv.irt_wpa
|
|
#define icmp_lifetime icmp_hun.ih_rtradv.irt_lifetime
|
|
union {
|
|
struct id_ts {
|
|
n_time its_otime;
|
|
n_time its_rtime;
|
|
n_time its_ttime;
|
|
} id_ts __packed;
|
|
struct id_ip {
|
|
struct ip idi_ip;
|
|
/* options and then 64 bits of data */
|
|
} id_ip /* XXX: __packed ??? */;
|
|
struct icmp_ra_addr id_radv;
|
|
u_int32_t id_mask;
|
|
int8_t id_data[1];
|
|
} icmp_dun /* XXX __packed ??? */;
|
|
#define icmp_otime icmp_dun.id_ts.its_otime
|
|
#define icmp_rtime icmp_dun.id_ts.its_rtime
|
|
#define icmp_ttime icmp_dun.id_ts.its_ttime
|
|
#define icmp_ip icmp_dun.id_ip.idi_ip
|
|
#define icmp_radv icmp_dun.id_mask
|
|
#define icmp_mask icmp_dun.id_mask
|
|
#define icmp_data icmp_dun.id_data
|
|
};
|
|
|
|
/*
|
|
* Lower bounds on packet lengths for various types.
|
|
* For the error advice packets must first insure that the
|
|
* packet is large enought to contain the returned ip header.
|
|
* Only then can we do the check to see if 64 bits of packet
|
|
* data have been returned, since we need to check the returned
|
|
* ip header length.
|
|
*/
|
|
#define ICMP_MINLEN 8 /* abs minimum */
|
|
#define ICMP_TSLEN (8 + 3 * sizeof (n_time)) /* timestamp */
|
|
#define ICMP_MASKLEN 12 /* address mask */
|
|
#define ICMP_ADVLENMIN (8 + sizeof (struct ip) + 8) /* min */
|
|
#define ICMP_ADVLEN(p) (8 + ((p)->icmp_ip.ip_hl << 2) + 8)
|
|
/* N.B.: must separately check that ip_hl >= 5 */
|
|
|
|
/*
|
|
* Definition of type and code field values.
|
|
*/
|
|
#define ICMP_ECHOREPLY 0 /* echo reply */
|
|
#define ICMP_UNREACH 3 /* dest unreachable, codes: */
|
|
#define ICMP_UNREACH_NET 0 /* bad net */
|
|
#define ICMP_UNREACH_HOST 1 /* bad host */
|
|
#define ICMP_UNREACH_PROTOCOL 2 /* bad protocol */
|
|
#define ICMP_UNREACH_PORT 3 /* bad port */
|
|
#define ICMP_UNREACH_NEEDFRAG 4 /* IP_DF caused drop */
|
|
#define ICMP_UNREACH_SRCFAIL 5 /* src route failed */
|
|
#define ICMP_UNREACH_NET_UNKNOWN 6 /* unknown net */
|
|
#define ICMP_UNREACH_HOST_UNKNOWN 7 /* unknown host */
|
|
#define ICMP_UNREACH_ISOLATED 8 /* src host isolated */
|
|
#define ICMP_UNREACH_NET_PROHIB 9 /* prohibited access */
|
|
#define ICMP_UNREACH_HOST_PROHIB 10 /* ditto */
|
|
#define ICMP_UNREACH_TOSNET 11 /* bad tos for net */
|
|
#define ICMP_UNREACH_TOSHOST 12 /* bad tos for host */
|
|
#define ICMP_UNREACH_ADMIN_PROHIBIT 13 /* communication
|
|
administratively
|
|
prohibited */
|
|
#define ICMP_UNREACH_HOST_PREC 14 /* host precedence
|
|
violation */
|
|
#define ICMP_UNREACH_PREC_CUTOFF 15 /* precedence cutoff */
|
|
#define ICMP_SOURCEQUENCH 4 /* packet lost, slow down */
|
|
#define ICMP_REDIRECT 5 /* shorter route, codes: */
|
|
#define ICMP_REDIRECT_NET 0 /* for network */
|
|
#define ICMP_REDIRECT_HOST 1 /* for host */
|
|
#define ICMP_REDIRECT_TOSNET 2 /* for tos and net */
|
|
#define ICMP_REDIRECT_TOSHOST 3 /* for tos and host */
|
|
#define ICMP_ALTHOSTADDR 6 /* alternative host address */
|
|
#define ICMP_ECHO 8 /* echo service */
|
|
#define ICMP_ROUTERADVERT 9 /* router advertisement */
|
|
#define ICMP_ROUTERADVERT_NORMAL 0
|
|
#define ICMP_ROUTERADVERT_NOROUTE 16
|
|
#define ICMP_ROUTERSOLICIT 10 /* router solicitation */
|
|
#define ICMP_TIMXCEED 11 /* time exceeded, code: */
|
|
#define ICMP_TIMXCEED_INTRANS 0 /* ttl==0 in transit */
|
|
#define ICMP_TIMXCEED_REASS 1 /* ttl==0 in reass */
|
|
#define ICMP_PARAMPROB 12 /* ip header bad */
|
|
#define ICMP_PARAMPROB_ERRATPTR 0
|
|
#define ICMP_PARAMPROB_OPTABSENT 1
|
|
#define ICMP_PARAMPROB_LENGTH 2
|
|
#define ICMP_TSTAMP 13 /* timestamp request */
|
|
#define ICMP_TSTAMPREPLY 14 /* timestamp reply */
|
|
#define ICMP_IREQ 15 /* information request */
|
|
#define ICMP_IREQREPLY 16 /* information reply */
|
|
#define ICMP_MASKREQ 17 /* address mask request */
|
|
#define ICMP_MASKREPLY 18 /* address mask reply */
|
|
#define ICMP_TRACEROUTE 30 /* traceroute */
|
|
#define ICMP_DATACONVERR 31 /* data conversion error */
|
|
#define ICMP_MOBILE_REDIRECT 32 /* mobile redirect */
|
|
#define ICMP_IPV6_WHEREAREYOU 33 /* ipv6 where are you */
|
|
#define ICMP_IPV6_IAMHERE 34 /* ipv6 i am here */
|
|
#define ICMP_MOBILE_REGREQUEST 35 /* mobile registration req */
|
|
#define ICMP_MOBILE_REGREPLY 36 /* mobile registration reply */
|
|
#define ICMP_SKIP 39 /* SKIP */
|
|
#define ICMP_PHOTURIS 40 /* security */
|
|
#define ICMP_PHOTURIS_UNKNOWN_INDEX 0 /* unknown sec index */
|
|
#define ICMP_PHOTURIS_AUTH_FAILED 1 /* auth failed */
|
|
#define ICMP_PHOTURIS_DECOMPRESS_FAILED 2 /* decompress failed */
|
|
#define ICMP_PHOTURIS_DECRYPT_FAILED 3 /* decrypt failed */
|
|
#define ICMP_PHOTURIS_NEED_AUTHN 4 /* no authentication */
|
|
#define ICMP_PHOTURIS_NEED_AUTHZ 5 /* no authorization */
|
|
|
|
#define ICMP_MAXTYPE 40
|
|
#define ICMP_NTYPES (ICMP_MAXTYPE + 1)
|
|
|
|
#ifdef ICMP_STRINGS
|
|
static const char *icmp_type[] = {
|
|
"echoreply", "unassigned_1", "unassigned_2", "unreach",
|
|
"sourcequench", "redirect", "althostaddr", "unassigned_7",
|
|
"echo", "routeradvert", "routersolicit", "timxceed",
|
|
"paramprob", "tstamp", "tstampreply", "ireq",
|
|
"ireqreply", "maskreq", "maskreply", "reserved_19",
|
|
"reserved_20", "reserved_21", "reserved_22", "reserved_23",
|
|
"reserved_24", "reserved_25", "reserved_26", "reserved_27",
|
|
"reserved_28", "reserved_29", "traceroute", "dataconverr",
|
|
"mobile_redirect", "ipv6_whereareyou", "ipv6_iamhere",
|
|
"mobile_regrequest", "mobile_regreply", "reserved_37",
|
|
"reserved_38", "skip", "photuris", NULL
|
|
};
|
|
static const char *icmp_code_none[] = { "none", NULL };
|
|
static const char *icmp_code_unreach[] = {
|
|
"net", "host", "oprt", "needfrag", "srcfail", "net_unknown",
|
|
"host_unknown", "isolated", "net_prohib", "host_prohib",
|
|
"tosnet", "toshost", "admin_prohibit", "host_prec", "prec_cutoff", NULL
|
|
};
|
|
static const char *icmp_code_redirect[] = {
|
|
"net", "host", "tosnet", "toshost", NULL
|
|
};
|
|
static const char *icmp_code_routeradvert[] = {
|
|
"normal", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "",
|
|
"noroute", NULL
|
|
};
|
|
static const char *icmp_code_timxceed[] = {
|
|
"intrans", "reass", NULL
|
|
};
|
|
static const char *icmp_code_paramprob[] = {
|
|
"erratptr", "optabsent", "length", NULL
|
|
};
|
|
static const char *icmp_code_photuris[] = {
|
|
"unknown_index", "auth_failed", "decompress_failed",
|
|
"decrypt_failed", "need_authn", "need_authz", NULL
|
|
};
|
|
#endif
|
|
|
|
#define ICMP_INFOTYPE(type) \
|
|
((type) == ICMP_ECHOREPLY || (type) == ICMP_ECHO || \
|
|
(type) == ICMP_ROUTERADVERT || (type) == ICMP_ROUTERSOLICIT || \
|
|
(type) == ICMP_TSTAMP || (type) == ICMP_TSTAMPREPLY || \
|
|
(type) == ICMP_IREQ || (type) == ICMP_IREQREPLY || \
|
|
(type) == ICMP_MASKREQ || (type) == ICMP_MASKREPLY)
|
|
|
|
#ifdef _KERNEL
|
|
void icmp_error(struct mbuf *, int, int, n_long, int);
|
|
void icmp_mtudisc(struct icmp *, struct in_addr);
|
|
void icmp_input(struct mbuf *, ...);
|
|
void icmp_init(void);
|
|
void icmp_reflect(struct mbuf *);
|
|
void icmp_send(struct mbuf *, struct mbuf *);
|
|
int icmp_sysctl(int *, u_int, void *, size_t *, void *, size_t);
|
|
|
|
void icmp_mtudisc_callback_register(void (*)(struct in_addr));
|
|
int icmp_ratelimit(const struct in_addr *, const int, const int);
|
|
void icmp_mtudisc_lock(void);
|
|
void icmp_mtudisc_unlock(void);
|
|
#endif
|
|
|
|
|
|
#endif /* !_NETINET_IP_ICMP_H_ */
|