[qemu.git] / slirp / ip.h

/*
 * 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.h	8.1 (Berkeley) 6/10/93
 * ip.h,v 1.3 1994/08/21 05:27:30 paul Exp
 */

#ifndef _IP_H_
#define _IP_H_

#ifdef WORDS_BIGENDIAN
# ifndef NTOHL
#  define NTOHL(d)
# endif
# ifndef NTOHS
#  define NTOHS(d)
# endif
# ifndef HTONL
#  define HTONL(d)
# endif
# ifndef HTONS
#  define HTONS(d)
# endif
#else
# ifndef NTOHL
#  define NTOHL(d) ((d) = ntohl((d)))
# endif
# ifndef NTOHS
#  define NTOHS(d) ((d) = ntohs((u_int16_t)(d)))
# endif
# ifndef HTONL
#  define HTONL(d) ((d) = htonl((d)))
# endif
# ifndef HTONS
#  define HTONS(d) ((d) = htons((u_int16_t)(d)))
# endif
#endif

typedef u_int32_t n_long;                 /* long as received from the net */

/*
 * Definitions for internet protocol version 4.
 * Per RFC 791, September 1981.
 */
#define	IPVERSION	4

/*
 * Structure of an internet header, naked of options.
 */
struct ip {
#ifdef WORDS_BIGENDIAN
	u_int ip_v:4,			/* version */
		ip_hl:4;		/* header length */
#else
	u_int ip_hl:4,		/* header length */
		ip_v:4;			/* version */
#endif
	u_int8_t ip_tos;			/* type of service */
	u_int16_t	ip_len;			/* total length */
	u_int16_t	ip_id;			/* identification */
	u_int16_t	ip_off;			/* fragment offset field */
#define	IP_DF 0x4000			/* don't fragment flag */
#define	IP_MF 0x2000			/* more fragments flag */
#define	IP_OFFMASK 0x1fff		/* mask for fragmenting bits */
	u_int8_t ip_ttl;			/* time to live */
	u_int8_t ip_p;			/* protocol */
	u_int16_t	ip_sum;			/* checksum */
	struct	in_addr ip_src,ip_dst;	/* source and dest address */
};

#define	IP_MAXPACKET	65535		/* maximum packet size */

/*
 * Definitions for IP type of service (ip_tos)
 */
#define	IPTOS_LOWDELAY		0x10
#define	IPTOS_THROUGHPUT	0x08
#define	IPTOS_RELIABILITY	0x04

/*
 * Definitions for options.
 */
#define	IPOPT_COPIED(o)		((o)&0x80)
#define	IPOPT_CLASS(o)		((o)&0x60)
#define	IPOPT_NUMBER(o)		((o)&0x1f)

#define	IPOPT_CONTROL		0x00
#define	IPOPT_RESERVED1		0x20
#define	IPOPT_DEBMEAS		0x40
#define	IPOPT_RESERVED2		0x60

#define	IPOPT_EOL		0		/* end of option list */
#define	IPOPT_NOP		1		/* no operation */

#define	IPOPT_RR		7		/* record packet route */
#define	IPOPT_TS		68		/* timestamp */
#define	IPOPT_SECURITY		130		/* provide s,c,h,tcc */
#define	IPOPT_LSRR		131		/* loose source route */
#define	IPOPT_SATID		136		/* satnet id */
#define	IPOPT_SSRR		137		/* strict source route */

/*
 * Offsets to fields in options other than EOL and NOP.
 */
#define	IPOPT_OPTVAL		0		/* option ID */
#define	IPOPT_OLEN		1		/* option length */
#define IPOPT_OFFSET		2		/* offset within option */
#define	IPOPT_MINOFF		4		/* min value of above */

/*
 * Time stamp option structure.
 */
struct	ip_timestamp {
	u_int8_t	ipt_code;		/* IPOPT_TS */
	u_int8_t	ipt_len;		/* size of structure (variable) */
	u_int8_t	ipt_ptr;		/* index of current entry */
#ifdef WORDS_BIGENDIAN
	u_int	ipt_oflw:4,		/* overflow counter */
		ipt_flg:4;		/* flags, see below */
#else
	u_int	ipt_flg:4,		/* flags, see below */
		ipt_oflw:4;		/* overflow counter */
#endif
	union ipt_timestamp {
		n_long	ipt_time[1];
		struct	ipt_ta {
			struct in_addr ipt_addr;
			n_long ipt_time;
		} ipt_ta[1];
	} ipt_timestamp;
};

/* flag bits for ipt_flg */
#define	IPOPT_TS_TSONLY		0		/* timestamps only */
#define	IPOPT_TS_TSANDADDR	1		/* timestamps and addresses */
#define	IPOPT_TS_PRESPEC	3		/* specified modules only */

/* bits for security (not byte swapped) */
#define	IPOPT_SECUR_UNCLASS	0x0000
#define	IPOPT_SECUR_CONFID	0xf135
#define	IPOPT_SECUR_EFTO	0x789a
#define	IPOPT_SECUR_MMMM	0xbc4d
#define	IPOPT_SECUR_RESTR	0xaf13
#define	IPOPT_SECUR_SECRET	0xd788
#define	IPOPT_SECUR_TOPSECRET	0x6bc5

/*
 * Internet implementation parameters.
 */
#define	MAXTTL		255		/* maximum time to live (seconds) */
#define	IPDEFTTL	64		/* default ttl, from RFC 1340 */
#define	IPFRAGTTL	60		/* time to live for frags, slowhz */
#define	IPTTLDEC	1		/* subtracted when forwarding */

#define	IP_MSS		576		/* default maximum segment size */

#ifdef HAVE_SYS_TYPES32_H  /* Overcome some Solaris 2.x junk */
#include <sys/types32.h>
#else
#if SIZEOF_CHAR_P == 4
typedef caddr_t caddr32_t;
#else
typedef u_int32_t caddr32_t;
#endif
#endif

#if SIZEOF_CHAR_P == 4
typedef struct ipq *ipqp_32;
typedef struct ipasfrag *ipasfragp_32;
#else
typedef caddr32_t ipqp_32;
typedef caddr32_t ipasfragp_32;
#endif

/*
 * Overlay for ip header used by other protocols (tcp, udp).
 */
struct ipovly {
	caddr32_t	ih_next, ih_prev;	/* for protocol sequence q's */
	u_int8_t	ih_x1;			/* (unused) */
	u_int8_t	ih_pr;			/* protocol */
	u_int16_t	ih_len;			/* protocol length */
	struct	in_addr ih_src;		/* source internet address */
	struct	in_addr ih_dst;		/* destination internet address */
};

/*
 * Ip reassembly queue structure.  Each fragment
 * being reassembled is attached to one of these structures.
 * They are timed out after ipq_ttl drops to 0, and may also
 * be reclaimed if memory becomes tight.
 * size 28 bytes
 */
struct ipq {
	ipqp_32 next,prev;	/* to other reass headers */
	u_int8_t	ipq_ttl;		/* time for reass q to live */
	u_int8_t	ipq_p;			/* protocol of this fragment */
	u_int16_t	ipq_id;			/* sequence id for reassembly */
	ipasfragp_32 ipq_next,ipq_prev;
					/* to ip headers of fragments */
	struct	in_addr ipq_src,ipq_dst;
};

/*
 * Ip header, when holding a fragment.
 *
 * Note: ipf_next must be at same offset as ipq_next above
 */
struct	ipasfrag {
#ifdef WORDS_BIGENDIAN
	u_int	ip_v:4,
 		ip_hl:4;
#else
	u_int	ip_hl:4,
		ip_v:4;
#endif
                                        /* BUG : u_int changed to u_int8_t.
                                         * sizeof(u_int)==4 on linux 2.0
					 */
        u_int8_t ipf_mff;		/* XXX overlays ip_tos: use low bit
					 * to avoid destroying tos (PPPDTRuu);
					 * copied from (ip_off&IP_MF) */
	u_int16_t	ip_len;
	u_int16_t	ip_id;
	u_int16_t	ip_off;
	u_int8_t	ip_ttl;
	u_int8_t	ip_p;
	u_int16_t	ip_sum;
	ipasfragp_32 ipf_next;		/* next fragment */
	ipasfragp_32 ipf_prev;		/* previous fragment */
};

/*
 * Structure stored in mbuf in inpcb.ip_options
 * and passed to ip_output when ip options are in use.
 * The actual length of the options (including ipopt_dst)
 * is in m_len.
 */
#define MAX_IPOPTLEN	40

struct ipoption {
	struct	in_addr ipopt_dst;	/* first-hop dst if source routed */
	int8_t	ipopt_list[MAX_IPOPTLEN];	/* options proper */
};

#ifdef LOG_ENABLED
/*
 * Structure attached to inpcb.ip_moptions and
 * passed to ip_output when IP multicast options are in use.
 */

struct	ipstat {
	u_long	ips_total;		/* total packets received */
	u_long	ips_badsum;		/* checksum bad */
	u_long	ips_tooshort;		/* packet too short */
	u_long	ips_toosmall;		/* not enough data */
	u_long	ips_badhlen;		/* ip header length < data size */
	u_long	ips_badlen;		/* ip length < ip header length */
	u_long	ips_fragments;		/* fragments received */
	u_long	ips_fragdropped;	/* frags dropped (dups, out of space) */
	u_long	ips_fragtimeout;	/* fragments timed out */
	u_long	ips_forward;		/* packets forwarded */
	u_long	ips_cantforward;	/* packets rcvd for unreachable dest */
	u_long	ips_redirectsent;	/* packets forwarded on same net */
	u_long	ips_noproto;		/* unknown or unsupported protocol */
	u_long	ips_delivered;		/* datagrams delivered to upper level*/
	u_long	ips_localout;		/* total ip packets generated here */
	u_long	ips_odropped;		/* lost packets due to nobufs, etc. */
	u_long	ips_reassembled;	/* total packets reassembled ok */
	u_long	ips_fragmented;		/* datagrams successfully fragmented */
	u_long	ips_ofragments;		/* output fragments created */
	u_long	ips_cantfrag;		/* don't fragment flag was set, etc. */
	u_long	ips_badoptions;		/* error in option processing */
	u_long	ips_noroute;		/* packets discarded due to no route */
	u_long	ips_badvers;		/* ip version != 4 */
	u_long	ips_rawout;		/* total raw ip packets generated */
	u_long	ips_unaligned;		/* times the ip packet was not aligned */
};

extern struct	ipstat	ipstat;
#endif

extern struct	ipq	ipq;			/* ip reass. queue */
extern u_int16_t	ip_id;				/* ip packet ctr, for ids */

#endif
Commit	Line	Data
f0cbd3ec FB	1	/*
	2	* Copyright (c) 1982, 1986, 1993
	3	* The Regents of the University of California. All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	8	* 1. Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer.
	10	* 2. Redistributions in binary form must reproduce the above copyright
	11	* notice, this list of conditions and the following disclaimer in the
	12	* documentation and/or other materials provided with the distribution.
	13	* 3. All advertising materials mentioning features or use of this software
	14	* must display the following acknowledgement:
	15	* This product includes software developed by the University of
	16	* California, Berkeley and its contributors.
	17	* 4. Neither the name of the University nor the names of its contributors
	18	* may be used to endorse or promote products derived from this software
	19	* without specific prior written permission.
	20	*
	21	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	22	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	23	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	24	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	25	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	26	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	27	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	28	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	29	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	30	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	31	* SUCH DAMAGE.
	32	*
	33	* @(#)ip.h 8.1 (Berkeley) 6/10/93
	34	* ip.h,v 1.3 1994/08/21 05:27:30 paul Exp
	35	*/
	36
	37	#ifndef _IP_H_
	38	#define _IP_H_
	39
	40	#ifdef WORDS_BIGENDIAN
	41	# ifndef NTOHL
	42	# define NTOHL(d)
	43	# endif
	44	# ifndef NTOHS
	45	# define NTOHS(d)
	46	# endif
	47	# ifndef HTONL
	48	# define HTONL(d)
	49	# endif
	50	# ifndef HTONS
	51	# define HTONS(d)
	52	# endif
	53	#else
	54	# ifndef NTOHL
	55	# define NTOHL(d) ((d) = ntohl((d)))
	56	# endif
	57	# ifndef NTOHS
	58	# define NTOHS(d) ((d) = ntohs((u_int16_t)(d)))
	59	# endif
	60	# ifndef HTONL
	61	# define HTONL(d) ((d) = htonl((d)))
	62	# endif
	63	# ifndef HTONS
	64	# define HTONS(d) ((d) = htons((u_int16_t)(d)))
65	# endif
66	#endif
67
68	typedef u_int32_t n_long; /* long as received from the net */
69
70	/*
71	* Definitions for internet protocol version 4.
72	* Per RFC 791, September 1981.
73	*/
74	#define IPVERSION 4
75
76	/*
77	* Structure of an internet header, naked of options.
f0cbd3ec FB	78	*/
	79	struct ip {
	80	#ifdef WORDS_BIGENDIAN
	81	u_int ip_v:4, /* version */
	82	ip_hl:4; /* header length */
	83	#else
	84	u_int ip_hl:4, /* header length */
	85	ip_v:4; /* version */
	86	#endif
	87	u_int8_t ip_tos; /* type of service */
e553272d	88	u_int16_t ip_len; /* total length */
f0cbd3ec	89	u_int16_t ip_id; /* identification */
e553272d	90	u_int16_t ip_off; /* fragment offset field */
f0cbd3ec FB	91	#define IP_DF 0x4000 /* don't fragment flag */
	92	#define IP_MF 0x2000 /* more fragments flag */
	93	#define IP_OFFMASK 0x1fff /* mask for fragmenting bits */
	94	u_int8_t ip_ttl; /* time to live */
	95	u_int8_t ip_p; /* protocol */
	96	u_int16_t ip_sum; /* checksum */
	97	struct in_addr ip_src,ip_dst; /* source and dest address */
	98	};
	99
	100	#define IP_MAXPACKET 65535 /* maximum packet size */
	101
	102	/*
	103	* Definitions for IP type of service (ip_tos)
	104	*/
	105	#define IPTOS_LOWDELAY 0x10
	106	#define IPTOS_THROUGHPUT 0x08
	107	#define IPTOS_RELIABILITY 0x04
	108
	109	/*
	110	* Definitions for options.
	111	*/
	112	#define IPOPT_COPIED(o) ((o)&0x80)
	113	#define IPOPT_CLASS(o) ((o)&0x60)
	114	#define IPOPT_NUMBER(o) ((o)&0x1f)
	115
	116	#define IPOPT_CONTROL 0x00
	117	#define IPOPT_RESERVED1 0x20
	118	#define IPOPT_DEBMEAS 0x40
	119	#define IPOPT_RESERVED2 0x60
	120
	121	#define IPOPT_EOL 0 /* end of option list */
	122	#define IPOPT_NOP 1 /* no operation */
	123
	124	#define IPOPT_RR 7 /* record packet route */
	125	#define IPOPT_TS 68 /* timestamp */
	126	#define IPOPT_SECURITY 130 /* provide s,c,h,tcc */
	127	#define IPOPT_LSRR 131 /* loose source route */
	128	#define IPOPT_SATID 136 /* satnet id */
	129	#define IPOPT_SSRR 137 /* strict source route */
	130
	131	/*
	132	* Offsets to fields in options other than EOL and NOP.
	133	*/
	134	#define IPOPT_OPTVAL 0 /* option ID */
	135	#define IPOPT_OLEN 1 /* option length */
	136	#define IPOPT_OFFSET 2 /* offset within option */
	137	#define IPOPT_MINOFF 4 /* min value of above */
	138
	139	/*
	140	* Time stamp option structure.
	141	*/
	142	struct ip_timestamp {
	143	u_int8_t ipt_code; /* IPOPT_TS */
	144	u_int8_t ipt_len; /* size of structure (variable) */
	145	u_int8_t ipt_ptr; /* index of current entry */
	146	#ifdef WORDS_BIGENDIAN
	147	u_int ipt_oflw:4, /* overflow counter */
	148	ipt_flg:4; /* flags, see below */
	149	#else
	150	u_int ipt_flg:4, /* flags, see below */
	151	ipt_oflw:4; /* overflow counter */
	152	#endif
	153	union ipt_timestamp {
	154	n_long ipt_time[1];
155	struct ipt_ta {
156	struct in_addr ipt_addr;
157	n_long ipt_time;
158	} ipt_ta[1];
159	} ipt_timestamp;
160	};
161
162	/* flag bits for ipt_flg */
163	#define IPOPT_TS_TSONLY 0 /* timestamps only */
164	#define IPOPT_TS_TSANDADDR 1 /* timestamps and addresses */
165	#define IPOPT_TS_PRESPEC 3 /* specified modules only */
166
167	/* bits for security (not byte swapped) */
168	#define IPOPT_SECUR_UNCLASS 0x0000
169	#define IPOPT_SECUR_CONFID 0xf135
170	#define IPOPT_SECUR_EFTO 0x789a
171	#define IPOPT_SECUR_MMMM 0xbc4d
172	#define IPOPT_SECUR_RESTR 0xaf13
173	#define IPOPT_SECUR_SECRET 0xd788
174	#define IPOPT_SECUR_TOPSECRET 0x6bc5
175
176	/*
177	* Internet implementation parameters.
178	*/
179	#define MAXTTL 255 /* maximum time to live (seconds) */
180	#define IPDEFTTL 64 /* default ttl, from RFC 1340 */
181	#define IPFRAGTTL 60 /* time to live for frags, slowhz */
182	#define IPTTLDEC 1 /* subtracted when forwarding */
183
184	#define IP_MSS 576 /* default maximum segment size */
185
186	#ifdef HAVE_SYS_TYPES32_H /* Overcome some Solaris 2.x junk */
187	#include <sys/types32.h>
188	#else
189	#if SIZEOF_CHAR_P == 4
190	typedef caddr_t caddr32_t;
191	#else
192	typedef u_int32_t caddr32_t;
193	#endif
194	#endif
195
196	#if SIZEOF_CHAR_P == 4
197	typedef struct ipq *ipqp_32;
198	typedef struct ipasfrag *ipasfragp_32;
199	#else
200	typedef caddr32_t ipqp_32;
201	typedef caddr32_t ipasfragp_32;
202	#endif
203
204	/*
205	* Overlay for ip header used by other protocols (tcp, udp).
206	*/
207	struct ipovly {
208	caddr32_t ih_next, ih_prev; /* for protocol sequence q's */
209	u_int8_t ih_x1; /* (unused) */
210	u_int8_t ih_pr; /* protocol */
e553272d	211	u_int16_t ih_len; /* protocol length */
f0cbd3ec FB	212	struct in_addr ih_src; /* source internet address */
	213	struct in_addr ih_dst; /* destination internet address */
	214	};
	215
	216	/*
	217	* Ip reassembly queue structure. Each fragment
	218	* being reassembled is attached to one of these structures.
	219	* They are timed out after ipq_ttl drops to 0, and may also
	220	* be reclaimed if memory becomes tight.
	221	* size 28 bytes
	222	*/
	223	struct ipq {
	224	ipqp_32 next,prev; /* to other reass headers */
	225	u_int8_t ipq_ttl; /* time for reass q to live */
	226	u_int8_t ipq_p; /* protocol of this fragment */
	227	u_int16_t ipq_id; /* sequence id for reassembly */
	228	ipasfragp_32 ipq_next,ipq_prev;
	229	/* to ip headers of fragments */
	230	struct in_addr ipq_src,ipq_dst;
	231	};
	232
	233	/*
	234	* Ip header, when holding a fragment.
	235	*
	236	* Note: ipf_next must be at same offset as ipq_next above
	237	*/
	238	struct ipasfrag {
	239	#ifdef WORDS_BIGENDIAN
	240	u_int ip_v:4,
	241	ip_hl:4;
	242	#else
	243	u_int ip_hl:4,
	244	ip_v:4;
	245	#endif
	246	/* BUG : u_int changed to u_int8_t.
	247	* sizeof(u_int)==4 on linux 2.0
	248	*/
	249	u_int8_t ipf_mff; /* XXX overlays ip_tos: use low bit
	250	* to avoid destroying tos (PPPDTRuu);
	251	* copied from (ip_off&IP_MF) */
e553272d	252	u_int16_t ip_len;
f0cbd3ec	253	u_int16_t ip_id;
e553272d	254	u_int16_t ip_off;
f0cbd3ec FB	255	u_int8_t ip_ttl;
	256	u_int8_t ip_p;
	257	u_int16_t ip_sum;
	258	ipasfragp_32 ipf_next; /* next fragment */
	259	ipasfragp_32 ipf_prev; /* previous fragment */
	260	};
	261
	262	/*
	263	* Structure stored in mbuf in inpcb.ip_options
	264	* and passed to ip_output when ip options are in use.
	265	* The actual length of the options (including ipopt_dst)
	266	* is in m_len.
	267	*/
	268	#define MAX_IPOPTLEN 40
	269
	270	struct ipoption {
	271	struct in_addr ipopt_dst; /* first-hop dst if source routed */
	272	int8_t ipopt_list[MAX_IPOPTLEN]; /* options proper */
	273	};
	274
31a60e22	275	#ifdef LOG_ENABLED
f0cbd3ec FB	276	/*
	277	* Structure attached to inpcb.ip_moptions and
	278	* passed to ip_output when IP multicast options are in use.
	279	*/
	280
	281	struct ipstat {
	282	u_long ips_total; /* total packets received */
	283	u_long ips_badsum; /* checksum bad */
	284	u_long ips_tooshort; /* packet too short */
	285	u_long ips_toosmall; /* not enough data */
	286	u_long ips_badhlen; /* ip header length < data size */
	287	u_long ips_badlen; /* ip length < ip header length */
	288	u_long ips_fragments; /* fragments received */
	289	u_long ips_fragdropped; /* frags dropped (dups, out of space) */
	290	u_long ips_fragtimeout; /* fragments timed out */
	291	u_long ips_forward; /* packets forwarded */
	292	u_long ips_cantforward; /* packets rcvd for unreachable dest */
	293	u_long ips_redirectsent; /* packets forwarded on same net */
	294	u_long ips_noproto; /* unknown or unsupported protocol */
	295	u_long ips_delivered; /* datagrams delivered to upper level*/
	296	u_long ips_localout; /* total ip packets generated here */
	297	u_long ips_odropped; /* lost packets due to nobufs, etc. */
	298	u_long ips_reassembled; /* total packets reassembled ok */
	299	u_long ips_fragmented; /* datagrams successfully fragmented */
	300	u_long ips_ofragments; /* output fragments created */
	301	u_long ips_cantfrag; /* don't fragment flag was set, etc. */
	302	u_long ips_badoptions; /* error in option processing */
	303	u_long ips_noroute; /* packets discarded due to no route */
	304	u_long ips_badvers; /* ip version != 4 */
	305	u_long ips_rawout; /* total raw ip packets generated */
	306	u_long ips_unaligned; /* times the ip packet was not aligned */
	307	};
	308
	309	extern struct ipstat ipstat;
31a60e22 BS	310	#endif
31a60e22 BS	311
f0cbd3ec FB	312	extern struct ipq ipq; /* ip reass. queue */
f0cbd3ec FB	313	extern u_int16_t ip_id; /* ip packet ctr, for ids */
31a60e22	314
f0cbd3ec	315	#endif