[apple/xnu.git] / bsd / netinet / ip_icmp.h

/*
 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * The contents of this file constitute Original Code as defined in and
 * are subject to the Apple Public Source License Version 1.1 (the
 * "License").  You may not use this file except in compliance with the
 * License.  Please obtain a copy of the License at
 * http://www.apple.com/publicsource and read it before using this file.
 * 
 * This Original Code and all software distributed under the License are
 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/*
 * 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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. 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
 * $FreeBSD: src/sys/netinet/ip_icmp.h,v 1.16 1999/12/29 04:41:01 peter Exp $
 */

#ifndef _NETINET_IP_ICMP_H_
#define _NETINET_IP_ICMP_H_
#include <sys/appleapiopts.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;
};

/*
 * Structure of an icmp header.
 */
struct icmp {
	u_char	icmp_type;		/* type of message, see below */
	u_char	icmp_code;		/* type sub code */
	u_short	icmp_cksum;		/* ones complement cksum of struct */
	union {
		u_char ih_pptr;			/* ICMP_PARAMPROB */
		struct in_addr ih_gwaddr;	/* ICMP_REDIRECT */
		struct ih_idseq {
			n_short	icd_id;
			n_short	icd_seq;
		} ih_idseq;
		int ih_void;

		/* ICMP_UNREACH_NEEDFRAG -- Path MTU Discovery (RFC1191) */
		struct ih_pmtu {
			n_short ipm_void;
			n_short ipm_nextmtu;
		} ih_pmtu;

		struct ih_rtradv {
			u_char irt_num_addrs;
			u_char irt_wpa;
			u_int16_t irt_lifetime;
		} ih_rtradv;
	} icmp_hun;
#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;
		struct id_ip  {
			struct ip idi_ip;
			/* options and then 64 bits of data */
		} id_ip;
		struct icmp_ra_addr id_radv;
		u_int32_t id_mask;
		char	id_data[1];
	} icmp_dun;
#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_radv
#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 enough 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 */
#ifndef _IP_VHL
#define	ICMP_ADVLEN(p)	(8 + ((p)->icmp_ip.ip_hl << 2) + 8)
	/* N.B.: must separately check that ip_hl >= 5 */
#else
#define	ICMP_ADVLEN(p)	(8 + (IP_VHL_HL((p)->icmp_ip.ip_vhl) << 2) + 8)
	/* N.B.: must separately check that header length >= 5 */
#endif

/*
 * 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_FILTER_PROHIB 13		/* admin prohib */
#define		ICMP_UNREACH_HOST_PRECEDENCE 14		/* host prec vio. */
#define		ICMP_UNREACH_PRECEDENCE_CUTOFF 15	/* prec 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_ECHO		8		/* echo service */
#define	ICMP_ROUTERADVERT	9		/* router advertisement */
#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		/* error at param ptr */
#define		ICMP_PARAMPROB_OPTABSENT 1		/* req. opt. absent */
#define		ICMP_PARAMPROB_LENGTH 2			/* bad length */
#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_MAXTYPE		18

#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
#ifdef __APPLE_API_PRIVATE
void	icmp_error __P((struct mbuf *, int, int, n_long, struct ifnet *));
void	icmp_input __P((struct mbuf *, int));
#endif /* __APPLE_API_PRIVATE */
#endif

#endif
Commit	Line	Data
1c79356b A	1	/*
	2	* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
e5568f75 A	6	* The contents of this file constitute Original Code as defined in and
	7	* are subject to the Apple Public Source License Version 1.1 (the
	8	* "License"). You may not use this file except in compliance with the
	9	* License. Please obtain a copy of the License at
	10	* http://www.apple.com/publicsource and read it before using this file.
1c79356b	11	*
e5568f75 A	12	* This Original Code and all software distributed under the License are
e5568f75 A	13	* distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
1c79356b A	14	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
1c79356b A	15	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
e5568f75 A	16	* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
	17	* License for the specific language governing rights and limitations
	18	* under the License.
1c79356b A	19	*
	20	* @APPLE_LICENSE_HEADER_END@
	21	*/
	22	/*
	23	* Copyright (c) 1982, 1986, 1993
	24	* The Regents of the University of California. All rights reserved.
	25	*
	26	* Redistribution and use in source and binary forms, with or without
	27	* modification, are permitted provided that the following conditions
	28	* are met:
	29	* 1. Redistributions of source code must retain the above copyright
	30	* notice, this list of conditions and the following disclaimer.
	31	* 2. Redistributions in binary form must reproduce the above copyright
	32	* notice, this list of conditions and the following disclaimer in the
	33	* documentation and/or other materials provided with the distribution.
	34	* 3. All advertising materials mentioning features or use of this software
	35	* must display the following acknowledgement:
	36	* This product includes software developed by the University of
	37	* California, Berkeley and its contributors.
	38	* 4. Neither the name of the University nor the names of its contributors
	39	* may be used to endorse or promote products derived from this software
	40	* without specific prior written permission.
	41	*
	42	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	43	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	44	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	45	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	46	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	47	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	48	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	49	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	50	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	51	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	52	* SUCH DAMAGE.
	53	*
	54	* @(#)ip_icmp.h 8.1 (Berkeley) 6/10/93
9bccf70c	55	* $FreeBSD: src/sys/netinet/ip_icmp.h,v 1.16 1999/12/29 04:41:01 peter Exp $
1c79356b A	56	*/
	57
	58	#ifndef _NETINET_IP_ICMP_H_
	59	#define _NETINET_IP_ICMP_H_
9bccf70c	60	#include <sys/appleapiopts.h>
1c79356b A	61
	62	/*
	63	* Interface Control Message Protocol Definitions.
	64	* Per RFC 792, September 1981.
	65	*/
	66
	67	/*
	68	* Internal of an ICMP Router Advertisement
	69	*/
	70	struct icmp_ra_addr {
	71	u_int32_t ira_addr;
	72	u_int32_t ira_preference;
	73	};
	74
	75	/*
	76	* Structure of an icmp header.
	77	*/
	78	struct icmp {
	79	u_char icmp_type; /* type of message, see below */
	80	u_char icmp_code; /* type sub code */
	81	u_short icmp_cksum; /* ones complement cksum of struct */
	82	union {
	83	u_char ih_pptr; /* ICMP_PARAMPROB */
	84	struct in_addr ih_gwaddr; /* ICMP_REDIRECT */
	85	struct ih_idseq {
	86	n_short icd_id;
	87	n_short icd_seq;
	88	} ih_idseq;
	89	int ih_void;
	90
	91	/* ICMP_UNREACH_NEEDFRAG -- Path MTU Discovery (RFC1191) */
	92	struct ih_pmtu {
	93	n_short ipm_void;
	94	n_short ipm_nextmtu;
	95	} ih_pmtu;
	96
	97	struct ih_rtradv {
	98	u_char irt_num_addrs;
	99	u_char irt_wpa;
	100	u_int16_t irt_lifetime;
	101	} ih_rtradv;
	102	} icmp_hun;
	103	#define icmp_pptr icmp_hun.ih_pptr
	104	#define icmp_gwaddr icmp_hun.ih_gwaddr
	105	#define icmp_id icmp_hun.ih_idseq.icd_id
	106	#define icmp_seq icmp_hun.ih_idseq.icd_seq
	107	#define icmp_void icmp_hun.ih_void
	108	#define icmp_pmvoid icmp_hun.ih_pmtu.ipm_void
	109	#define icmp_nextmtu icmp_hun.ih_pmtu.ipm_nextmtu
	110	#define icmp_num_addrs icmp_hun.ih_rtradv.irt_num_addrs
	111	#define icmp_wpa icmp_hun.ih_rtradv.irt_wpa
	112	#define icmp_lifetime icmp_hun.ih_rtradv.irt_lifetime
	113	union {
	114	struct id_ts {
	115	n_time its_otime;
	116	n_time its_rtime;
	117	n_time its_ttime;
	118	} id_ts;
	119	struct id_ip {
	120	struct ip idi_ip;
	121	/* options and then 64 bits of data */
	122	} id_ip;
	123	struct icmp_ra_addr id_radv;
	124	u_int32_t id_mask;
125	char id_data[1];
126	} icmp_dun;
127	#define icmp_otime icmp_dun.id_ts.its_otime
128	#define icmp_rtime icmp_dun.id_ts.its_rtime
129	#define icmp_ttime icmp_dun.id_ts.its_ttime
130	#define icmp_ip icmp_dun.id_ip.idi_ip
131	#define icmp_radv icmp_dun.id_radv
132	#define icmp_mask icmp_dun.id_mask
133	#define icmp_data icmp_dun.id_data
134	};
135
136	/*
137	* Lower bounds on packet lengths for various types.
138	* For the error advice packets must first insure that the
139	* packet is large enough to contain the returned ip header.
140	* Only then can we do the check to see if 64 bits of packet
141	* data have been returned, since we need to check the returned
142	* ip header length.
143	*/
144	#define ICMP_MINLEN 8 /* abs minimum */
145	#define ICMP_TSLEN (8 + 3 * sizeof (n_time)) /* timestamp */
146	#define ICMP_MASKLEN 12 /* address mask */
147	#define ICMP_ADVLENMIN (8 + sizeof (struct ip) + 8) /* min */
148	#ifndef _IP_VHL
149	#define ICMP_ADVLEN(p) (8 + ((p)->icmp_ip.ip_hl << 2) + 8)
150	/* N.B.: must separately check that ip_hl >= 5 */
151	#else
152	#define ICMP_ADVLEN(p) (8 + (IP_VHL_HL((p)->icmp_ip.ip_vhl) << 2) + 8)
153	/* N.B.: must separately check that header length >= 5 */
154	#endif
155
156	/*
157	* Definition of type and code field values.
158	*/
159	#define ICMP_ECHOREPLY 0 /* echo reply */
160	#define ICMP_UNREACH 3 /* dest unreachable, codes: */
161	#define ICMP_UNREACH_NET 0 /* bad net */
162	#define ICMP_UNREACH_HOST 1 /* bad host */
163	#define ICMP_UNREACH_PROTOCOL 2 /* bad protocol */
164	#define ICMP_UNREACH_PORT 3 /* bad port */
165	#define ICMP_UNREACH_NEEDFRAG 4 /* IP_DF caused drop */
166	#define ICMP_UNREACH_SRCFAIL 5 /* src route failed */
167	#define ICMP_UNREACH_NET_UNKNOWN 6 /* unknown net */
168	#define ICMP_UNREACH_HOST_UNKNOWN 7 /* unknown host */
169	#define ICMP_UNREACH_ISOLATED 8 /* src host isolated */
170	#define ICMP_UNREACH_NET_PROHIB 9 /* prohibited access */
171	#define ICMP_UNREACH_HOST_PROHIB 10 /* ditto */
172	#define ICMP_UNREACH_TOSNET 11 /* bad tos for net */
173	#define ICMP_UNREACH_TOSHOST 12 /* bad tos for host */
174	#define ICMP_UNREACH_FILTER_PROHIB 13 /* admin prohib */
175	#define ICMP_UNREACH_HOST_PRECEDENCE 14 /* host prec vio. */
176	#define ICMP_UNREACH_PRECEDENCE_CUTOFF 15 /* prec cutoff */
177	#define ICMP_SOURCEQUENCH 4 /* packet lost, slow down */
178	#define ICMP_REDIRECT 5 /* shorter route, codes: */
179	#define ICMP_REDIRECT_NET 0 /* for network */
180	#define ICMP_REDIRECT_HOST 1 /* for host */
181	#define ICMP_REDIRECT_TOSNET 2 /* for tos and net */
182	#define ICMP_REDIRECT_TOSHOST 3 /* for tos and host */
183	#define ICMP_ECHO 8 /* echo service */
184	#define ICMP_ROUTERADVERT 9 /* router advertisement */
185	#define ICMP_ROUTERSOLICIT 10 /* router solicitation */
186	#define ICMP_TIMXCEED 11 /* time exceeded, code: */
187	#define ICMP_TIMXCEED_INTRANS 0 /* ttl==0 in transit */
188	#define ICMP_TIMXCEED_REASS 1 /* ttl==0 in reass */
189	#define ICMP_PARAMPROB 12 /* ip header bad */
190	#define ICMP_PARAMPROB_ERRATPTR 0 /* error at param ptr */
191	#define ICMP_PARAMPROB_OPTABSENT 1 /* req. opt. absent */
192	#define ICMP_PARAMPROB_LENGTH 2 /* bad length */
193	#define ICMP_TSTAMP 13 /* timestamp request */
194	#define ICMP_TSTAMPREPLY 14 /* timestamp reply */
195	#define ICMP_IREQ 15 /* information request */
196	#define ICMP_IREQREPLY 16 /* information reply */
197	#define ICMP_MASKREQ 17 /* address mask request */
198	#define ICMP_MASKREPLY 18 /* address mask reply */
199
200	#define ICMP_MAXTYPE 18
201
202	#define ICMP_INFOTYPE(type) \
203	((type) == ICMP_ECHOREPLY \|\| (type) == ICMP_ECHO \|\| \
204	(type) == ICMP_ROUTERADVERT \|\| (type) == ICMP_ROUTERSOLICIT \|\| \
205	(type) == ICMP_TSTAMP \|\| (type) == ICMP_TSTAMPREPLY \|\| \
206	(type) == ICMP_IREQ \|\| (type) == ICMP_IREQREPLY \|\| \
207	(type) == ICMP_MASKREQ \|\| (type) == ICMP_MASKREPLY)
208
209	#ifdef KERNEL
9bccf70c	210	#ifdef __APPLE_API_PRIVATE
1c79356b A	211	void icmp_error __P((struct mbuf , int, int, n_long, struct ifnet ));
1c79356b A	212	void icmp_input __P((struct mbuf *, int));
9bccf70c	213	#endif /* __APPLE_API_PRIVATE */
1c79356b A	214	#endif
	215
	216	#endif