[apple/xnu.git] / bsd / netinet6 / ip6_var.h

/*	$FreeBSD: src/sys/netinet6/ip6_var.h,v 1.2.2.2 2001/07/03 11:01:54 ume Exp $	*/
/*	$KAME: ip6_var.h,v 1.62 2001/05/03 14:51:48 itojun Exp $	*/

/*
 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
 * 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 project 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 PROJECT 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 PROJECT 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.
 */

/*
 * 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_var.h	8.1 (Berkeley) 6/10/93
 */

#ifndef _NETINET6_IP6_VAR_H_
#define _NETINET6_IP6_VAR_H_
#include <sys/appleapiopts.h>

#ifdef KERNEL_PRIVATE
/*
 * IP6 reassembly queue structure.  Each fragment
 * being reassembled is attached to one of these structures.
 */
struct	ip6q {
	u_int32_t	ip6q_head;
	u_int16_t	ip6q_len;
	u_int8_t	ip6q_nxt;	/* ip6f_nxt in first fragment */
	u_int8_t	ip6q_hlim;
	struct ip6asfrag *ip6q_down;
	struct ip6asfrag *ip6q_up;
	u_int32_t	ip6q_ident;
	u_int8_t	ip6q_arrive;
	u_int8_t	ip6q_ttl;
	struct in6_addr	ip6q_src, ip6q_dst;
	struct ip6q	*ip6q_next;
	struct ip6q	*ip6q_prev;
	int		ip6q_unfrglen;	/* len of unfragmentable part */
#if notyet
	u_char	*ip6q_nxtp;
#endif
	int			ip6q_nfrag;     /* number of fragments */
};

struct	ip6asfrag {
	u_int32_t	ip6af_head;
	u_int16_t	ip6af_len;
	u_int8_t	ip6af_nxt;
	u_int8_t	ip6af_hlim;
	/* must not override the above members during reassembling */
	struct ip6asfrag *ip6af_down;
	struct ip6asfrag *ip6af_up;
	struct mbuf	*ip6af_m;
	int		ip6af_offset;	/* offset in ip6af_m to next header */
	int		ip6af_frglen;	/* fragmentable part length */
	int		ip6af_off;	/* fragment offset */
	u_int16_t	ip6af_mff;	/* more fragment bit in frag off */
};

#define IP6_REASS_MBUF(ip6af) (*(struct mbuf **)&((ip6af)->ip6af_m))

struct	ip6_moptions {
	struct	ifnet *im6o_multicast_ifp; /* ifp for outgoing multicasts */
	u_char	im6o_multicast_hlim;	/* hoplimit for outgoing multicasts */
	u_char	im6o_multicast_loop;	/* 1 >= hear sends if a member */
	LIST_HEAD(, in6_multi_mship) im6o_memberships;
};

/*
 * Control options for outgoing packets
 */

/* Routing header related info */
struct	ip6po_rhinfo {
	struct	ip6_rthdr *ip6po_rhi_rthdr; /* Routing header */
	struct	route_in6 ip6po_rhi_route; /* Route to the 1st hop */
};
#define ip6po_rthdr	ip6po_rhinfo.ip6po_rhi_rthdr
#define ip6po_route	ip6po_rhinfo.ip6po_rhi_route

struct	ip6_pktopts {
	struct	mbuf *ip6po_m;	/* Pointer to mbuf storing the data */
	int	ip6po_hlim;	/* Hoplimit for outgoing packets */

	/* Outgoing IF/address information */
	struct	in6_pktinfo *ip6po_pktinfo;

	struct	sockaddr *ip6po_nexthop; /* Next-hop address */
	
	struct	ip6_hbh *ip6po_hbh; /* Hop-by-Hop options header */

	/* Destination options header (before a routing header) */
	struct	ip6_dest *ip6po_dest1;

	/* Routing header related info. */
	struct	ip6po_rhinfo ip6po_rhinfo;

	/* Destination options header (after a routing header) */
	struct	ip6_dest *ip6po_dest2;
};

/*
 * Control options for incoming packets
 */
#endif /* KERNEL_PRIVATE */

struct	ip6stat {
	u_quad_t ip6s_total;		/* total packets received */
	u_quad_t ip6s_tooshort;		/* packet too short */
	u_quad_t ip6s_toosmall;		/* not enough data */
	u_quad_t ip6s_fragments;	/* fragments received */
	u_quad_t ip6s_fragdropped;	/* frags dropped(dups, out of space) */
	u_quad_t ip6s_fragtimeout;	/* fragments timed out */
	u_quad_t ip6s_fragoverflow;	/* fragments that exceeded limit */
	u_quad_t ip6s_forward;		/* packets forwarded */
	u_quad_t ip6s_cantforward;	/* packets rcvd for unreachable dest */
	u_quad_t ip6s_redirectsent;	/* packets forwarded on same net */
	u_quad_t ip6s_delivered;	/* datagrams delivered to upper level*/
	u_quad_t ip6s_localout;		/* total ip packets generated here */
	u_quad_t ip6s_odropped;		/* lost packets due to nobufs, etc. */
	u_quad_t ip6s_reassembled;	/* total packets reassembled ok */
	u_quad_t ip6s_fragmented;	/* datagrams sucessfully fragmented */
	u_quad_t ip6s_ofragments;	/* output fragments created */
	u_quad_t ip6s_cantfrag;		/* don't fragment flag was set, etc. */
	u_quad_t ip6s_badoptions;	/* error in option processing */
	u_quad_t ip6s_noroute;		/* packets discarded due to no route */
	u_quad_t ip6s_badvers;		/* ip6 version != 6 */
	u_quad_t ip6s_rawout;		/* total raw ip packets generated */
	u_quad_t ip6s_badscope;		/* scope error */
	u_quad_t ip6s_notmember;	/* don't join this multicast group */
	u_quad_t ip6s_nxthist[256];	/* next header history */
	u_quad_t ip6s_m1;		/* one mbuf */
	u_quad_t ip6s_m2m[32];		/* two or more mbuf */
	u_quad_t ip6s_mext1;		/* one ext mbuf */
	u_quad_t ip6s_mext2m;		/* two or more ext mbuf */
	u_quad_t ip6s_exthdrtoolong;	/* ext hdr are not continuous */
	u_quad_t ip6s_nogif;		/* no match gif found */
	u_quad_t ip6s_toomanyhdr;	/* discarded due to too many headers */

	/*
	 * statistics for improvement of the source address selection
	 * algorithm:
	 * XXX: hardcoded 16 = # of ip6 multicast scope types + 1
	 */
	/* number of times that address selection fails */
	u_quad_t ip6s_sources_none;
	/* number of times that an address on the outgoing I/F is chosen */
	u_quad_t ip6s_sources_sameif[16];
	/* number of times that an address on a non-outgoing I/F is chosen */
	u_quad_t ip6s_sources_otherif[16];
	/*
	 * number of times that an address that has the same scope
	 * from the destination is chosen.
	 */
	u_quad_t ip6s_sources_samescope[16];
	/*
	 * number of times that an address that has a different scope
	 * from the destination is chosen.
	 */
	u_quad_t ip6s_sources_otherscope[16];
	/* number of times that an deprecated address is chosen */
	u_quad_t ip6s_sources_deprecated[16];

	u_quad_t ip6s_forward_cachehit;
	u_quad_t ip6s_forward_cachemiss;
};

#ifdef KERNEL_PRIVATE
#ifdef KERNEL
/*
 * IPv6 onion peeling state.
 * it will be initialized when we come into ip6_input().
 * XXX do not make it a kitchen sink!
 */
struct ip6aux {
	u_int32_t ip6a_flags;
#define IP6A_SWAP	0x01		/* swapped home/care-of on packet */
#define IP6A_HASEEN	0x02		/* HA was present */
#define IP6A_BRUID	0x04		/* BR Unique Identifier was present */
#define IP6A_RTALERTSEEN 0x08		/* rtalert present */

	/* ip6.ip6_src */
	struct in6_addr ip6a_careof;	/* care-of address of the peer */
	struct in6_addr ip6a_home;	/* home address of the peer */
	u_int16_t	ip6a_bruid;	/* BR unique identifier */

	/* ip6.ip6_dst */
	struct in6_ifaddr *ip6a_dstia6;	/* my ifaddr that matches ip6_dst */

	/* rtalert */
	u_int16_t ip6a_rtalert;		/* rtalert option value */

	/*
	 * decapsulation history will be here.
	 * with IPsec it may not be accurate.
	 */
};

/* flags passed to ip6_output as last parameter */
#define	IPV6_DADOUTPUT		0x01	/* DAD */
#define	IPV6_FORWARDING		0x02	/* most of IPv6 header exists */
#define	IPV6_MINMTU		0x04	/* use minimum MTU (IPV6_USE_MIN_MTU) */

extern struct	ip6stat ip6stat;	/* statistics */
extern u_int32_t ip6_id;		/* fragment identifier */
extern int	ip6_defhlim;		/* default hop limit */
extern int	ip6_defmcasthlim;	/* default multicast hop limit */
extern int	ip6_forwarding;		/* act as router? */
extern int	ip6_forward_srcrt;	/* forward src-routed? */
extern int	ip6_gif_hlim;		/* Hop limit for gif encap packet */
extern int	ip6_use_deprecated;	/* allow deprecated addr as source */
extern int	ip6_rr_prune;		/* router renumbering prefix
					 * walk list every 5 sec.    */
#define ip6_mapped_addr_on	(!ip6_v6only)
extern int	ip6_v6only;

extern int	ip6_neighborgcthresh;	/* Threshold # of NDP entries for GC */
extern int	ip6_maxifprefixes;	/* Max acceptable prefixes via RA per IF */
extern int	ip6_maxifdefrouters;	/* Max acceptable def routers via RA */
extern int	ip6_maxdynroutes;	/* Max # of routes created via redirect */

extern struct socket *ip6_mrouter; 	/* multicast routing daemon */
extern int	ip6_sendredirects;	/* send IP redirects when forwarding? */
extern int	ip6_maxfragpackets; 	/* Maximum packets in reassembly queue */
extern int      ip6_maxfrags;   	/* Maximum fragments in reassembly queue */
extern int	ip6_sourcecheck;	/* Verify source interface */
extern int	ip6_sourcecheck_interval; /* Interval between log messages */
extern int	ip6_accept_rtadv;	/* Acts as a host not a router */
extern int	ip6_keepfaith;		/* Firewall Aided Internet Translator */
extern int	ip6_log_interval;
extern time_t	ip6_log_time;
extern int	ip6_hdrnestlimit; /* upper limit of # of extension headers */
extern int	ip6_dad_count;		/* DupAddrDetectionTransmits */

extern u_int32_t ip6_flow_seq;
extern int ip6_auto_flowlabel;
extern int ip6_auto_linklocal;

extern int   ip6_anonportmin;		/* minimum ephemeral port */
extern int   ip6_anonportmax;		/* maximum ephemeral port */
extern int   ip6_lowportmin;		/* minimum reserved port */
extern int   ip6_lowportmax;		/* maximum reserved port */

extern int	ip6_use_tempaddr; /* whether to use temporary addresses. */

extern struct	pr_usrreqs rip6_usrreqs;
extern struct   pr_usrreqs icmp6_dgram_usrreqs;
struct sockopt;

struct inpcb;

int	icmp6_ctloutput(struct socket *, struct sockopt *);
int	icmp6_dgram_ctloutput(struct socket *, struct sockopt *);
int 	icmp6_dgram_send(struct socket *, int , struct mbuf *, struct sockaddr *, struct mbuf *, struct proc *);
int 	icmp6_dgram_attach(struct socket *, int , struct proc *);


struct in6_ifaddr;
void	ip6_init(void);
void	ip6intr(void);
void	ip6_input(struct mbuf *);
struct in6_ifaddr *ip6_getdstifaddr(struct mbuf *);
void	ip6_freepcbopts(struct ip6_pktopts *);
void	ip6_freemoptions(struct ip6_moptions *);
int	ip6_unknown_opt(u_int8_t *, struct mbuf *, int, int);
char *	ip6_get_prevhdr(struct mbuf *, int);
int	ip6_nexthdr(struct mbuf *, int, int, int *);
int	ip6_lasthdr(struct mbuf *, int, int, int *);

struct ip6aux *ip6_addaux(struct mbuf *);
struct ip6aux *ip6_findaux(struct mbuf *);
void	ip6_delaux(struct mbuf *);

int	ip6_mforward(struct ip6_hdr *, struct ifnet *, struct mbuf *);
int	ip6_process_hopopts(struct mbuf *, u_int8_t *, int, u_int32_t *,
				 u_int32_t *);
void	ip6_savecontrol(struct inpcb *, struct mbuf **, struct ip6_hdr *,
			     struct mbuf *);
void	ip6_notify_pmtu(struct inpcb *, struct sockaddr_in6 *,
			     u_int32_t *);
int	ip6_sysctl(int *, u_int, void *, size_t *, void *, size_t);

void	ip6_forward(struct mbuf *, struct route_in6 *, int, int);

void	ip6_mloopback(struct ifnet *, struct mbuf *, struct sockaddr_in6 *);
int	ip6_output(struct mbuf *, struct ip6_pktopts *,
			struct route_in6 *,
			int,
			struct ip6_moptions *, struct ifnet **, int locked);
int	ip6_ctloutput(struct socket *, struct sockopt *sopt);
void	init_ip6pktopts(struct ip6_pktopts *);
int	ip6_setpktoptions(struct mbuf *, struct ip6_pktopts *, int, int);
void	ip6_clearpktopts(struct ip6_pktopts *, int, int);
struct ip6_pktopts *ip6_copypktopts(struct ip6_pktopts *, int);
int	ip6_optlen(struct inpcb *);

int	route6_input(struct mbuf **, int *);

void	frag6_init(void);
int	frag6_input(struct mbuf **, int *);
void	frag6_slowtimo(void);
void	frag6_drain(void);

void	rip6_init(void);
int	rip6_input(struct mbuf **mp, int *offset);
void	rip6_ctlinput(int, struct sockaddr *, void *);
int	rip6_ctloutput(struct socket *so, struct sockopt *sopt);
int	rip6_output(struct mbuf *, struct socket *, struct sockaddr_in6 *, struct mbuf *);
int	rip6_usrreq(struct socket *,
	    int, struct mbuf *, struct mbuf *, struct mbuf *, struct proc *);

int	dest6_input(struct mbuf **, int *);
int	none_input(struct mbuf **, int *);
#endif /* KERNEL */
#endif /* KERNEL_PRIVATE */

#endif /* !_NETINET6_IP6_VAR_H_ */
Commit	Line	Data
9bccf70c A	1	/* $FreeBSD: src/sys/netinet6/ip6_var.h,v 1.2.2.2 2001/07/03 11:01:54 ume Exp $ */
9bccf70c A	2	/* $KAME: ip6_var.h,v 1.62 2001/05/03 14:51:48 itojun Exp $ */
1c79356b A	3
	4	/*
	5	* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
	6	* All rights reserved.
	7	*
	8	* Redistribution and use in source and binary forms, with or without
	9	* modification, are permitted provided that the following conditions
	10	* are met:
	11	* 1. Redistributions of source code must retain the above copyright
	12	* notice, this list of conditions and the following disclaimer.
	13	* 2. Redistributions in binary form must reproduce the above copyright
	14	* notice, this list of conditions and the following disclaimer in the
	15	* documentation and/or other materials provided with the distribution.
	16	* 3. Neither the name of the project nor the names of its contributors
	17	* may be used to endorse or promote products derived from this software
	18	* without specific prior written permission.
	19	*
	20	* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
	21	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	22	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	23	* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
	24	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	25	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	26	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	27	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	28	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	29	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	30	* SUCH DAMAGE.
	31	*/
	32
	33	/*
	34	* Copyright (c) 1982, 1986, 1993
	35	* The Regents of the University of California. All rights reserved.
	36	*
	37	* Redistribution and use in source and binary forms, with or without
	38	* modification, are permitted provided that the following conditions
	39	* are met:
	40	* 1. Redistributions of source code must retain the above copyright
	41	* notice, this list of conditions and the following disclaimer.
	42	* 2. Redistributions in binary form must reproduce the above copyright
	43	* notice, this list of conditions and the following disclaimer in the
	44	* documentation and/or other materials provided with the distribution.
	45	* 3. All advertising materials mentioning features or use of this software
	46	* must display the following acknowledgement:
	47	* This product includes software developed by the University of
	48	* California, Berkeley and its contributors.
	49	* 4. Neither the name of the University nor the names of its contributors
	50	* may be used to endorse or promote products derived from this software
	51	* without specific prior written permission.
	52	*
	53	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	54	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	55	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	56	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	57	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	58	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	59	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	60	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	61	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	62	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	63	* SUCH DAMAGE.
	64	*
	65	* @(#)ip_var.h 8.1 (Berkeley) 6/10/93
	66	*/
67
68	#ifndef _NETINET6_IP6_VAR_H_
69	#define _NETINET6_IP6_VAR_H_
9bccf70c	70	#include <sys/appleapiopts.h>
1c79356b	71
91447636	72	#ifdef KERNEL_PRIVATE
1c79356b A	73	/*
	74	* IP6 reassembly queue structure. Each fragment
	75	* being reassembled is attached to one of these structures.
	76	*/
	77	struct ip6q {
	78	u_int32_t ip6q_head;
	79	u_int16_t ip6q_len;
	80	u_int8_t ip6q_nxt; /* ip6f_nxt in first fragment */
	81	u_int8_t ip6q_hlim;
	82	struct ip6asfrag *ip6q_down;
	83	struct ip6asfrag *ip6q_up;
	84	u_int32_t ip6q_ident;
	85	u_int8_t ip6q_arrive;
	86	u_int8_t ip6q_ttl;
	87	struct in6_addr ip6q_src, ip6q_dst;
	88	struct ip6q *ip6q_next;
	89	struct ip6q *ip6q_prev;
	90	int ip6q_unfrglen; /* len of unfragmentable part */
	91	#if notyet
	92	u_char *ip6q_nxtp;
	93	#endif
91447636	94	int ip6q_nfrag; /* number of fragments */
1c79356b A	95	};
	96
	97	struct ip6asfrag {
	98	u_int32_t ip6af_head;
	99	u_int16_t ip6af_len;
	100	u_int8_t ip6af_nxt;
	101	u_int8_t ip6af_hlim;
	102	/* must not override the above members during reassembling */
	103	struct ip6asfrag *ip6af_down;
	104	struct ip6asfrag *ip6af_up;
	105	struct mbuf *ip6af_m;
	106	int ip6af_offset; /* offset in ip6af_m to next header */
	107	int ip6af_frglen; /* fragmentable part length */
	108	int ip6af_off; /* fragment offset */
	109	u_int16_t ip6af_mff; /* more fragment bit in frag off */
	110	};
	111
	112	#define IP6_REASS_MBUF(ip6af) ((struct mbuf *)&((ip6af)->ip6af_m))
	113
	114	struct ip6_moptions {
	115	struct ifnet im6o_multicast_ifp; / ifp for outgoing multicasts */
	116	u_char im6o_multicast_hlim; /* hoplimit for outgoing multicasts */
	117	u_char im6o_multicast_loop; /* 1 >= hear sends if a member */
	118	LIST_HEAD(, in6_multi_mship) im6o_memberships;
	119	};
	120
	121	/*
	122	* Control options for outgoing packets
	123	*/
	124
	125	/* Routing header related info */
	126	struct ip6po_rhinfo {
	127	struct ip6_rthdr ip6po_rhi_rthdr; / Routing header */
	128	struct route_in6 ip6po_rhi_route; /* Route to the 1st hop */
	129	};
	130	#define ip6po_rthdr ip6po_rhinfo.ip6po_rhi_rthdr
	131	#define ip6po_route ip6po_rhinfo.ip6po_rhi_route
	132
	133	struct ip6_pktopts {
9bccf70c	134	struct mbuf ip6po_m; / Pointer to mbuf storing the data */
1c79356b A	135	int ip6po_hlim; /* Hoplimit for outgoing packets */
	136
	137	/* Outgoing IF/address information */
	138	struct in6_pktinfo *ip6po_pktinfo;
	139
	140	struct sockaddr ip6po_nexthop; / Next-hop address */
	141
	142	struct ip6_hbh ip6po_hbh; / Hop-by-Hop options header */
	143
	144	/* Destination options header (before a routing header) */
	145	struct ip6_dest *ip6po_dest1;
	146
	147	/* Routing header related info. */
	148	struct ip6po_rhinfo ip6po_rhinfo;
	149
	150	/* Destination options header (after a routing header) */
	151	struct ip6_dest *ip6po_dest2;
1c79356b A	152	};
	153
	154	/*
	155	* Control options for incoming packets
	156	*/
91447636	157	#endif /* KERNEL_PRIVATE */
1c79356b	158
1c79356b A	159	struct ip6stat {
	160	u_quad_t ip6s_total; /* total packets received */
	161	u_quad_t ip6s_tooshort; /* packet too short */
	162	u_quad_t ip6s_toosmall; /* not enough data */
	163	u_quad_t ip6s_fragments; /* fragments received */
	164	u_quad_t ip6s_fragdropped; /* frags dropped(dups, out of space) */
	165	u_quad_t ip6s_fragtimeout; /* fragments timed out */
	166	u_quad_t ip6s_fragoverflow; /* fragments that exceeded limit */
	167	u_quad_t ip6s_forward; /* packets forwarded */
	168	u_quad_t ip6s_cantforward; /* packets rcvd for unreachable dest */
	169	u_quad_t ip6s_redirectsent; /* packets forwarded on same net */
	170	u_quad_t ip6s_delivered; /* datagrams delivered to upper level*/
	171	u_quad_t ip6s_localout; /* total ip packets generated here */
	172	u_quad_t ip6s_odropped; /* lost packets due to nobufs, etc. */
	173	u_quad_t ip6s_reassembled; /* total packets reassembled ok */
	174	u_quad_t ip6s_fragmented; /* datagrams sucessfully fragmented */
	175	u_quad_t ip6s_ofragments; /* output fragments created */
	176	u_quad_t ip6s_cantfrag; /* don't fragment flag was set, etc. */
	177	u_quad_t ip6s_badoptions; /* error in option processing */
	178	u_quad_t ip6s_noroute; /* packets discarded due to no route */
	179	u_quad_t ip6s_badvers; /* ip6 version != 6 */
	180	u_quad_t ip6s_rawout; /* total raw ip packets generated */
	181	u_quad_t ip6s_badscope; /* scope error */
	182	u_quad_t ip6s_notmember; /* don't join this multicast group */
	183	u_quad_t ip6s_nxthist[256]; /* next header history */
	184	u_quad_t ip6s_m1; /* one mbuf */
	185	u_quad_t ip6s_m2m[32]; /* two or more mbuf */
	186	u_quad_t ip6s_mext1; /* one ext mbuf */
	187	u_quad_t ip6s_mext2m; /* two or more ext mbuf */
	188	u_quad_t ip6s_exthdrtoolong; /* ext hdr are not continuous */
	189	u_quad_t ip6s_nogif; /* no match gif found */
	190	u_quad_t ip6s_toomanyhdr; /* discarded due to too many headers */
1c79356b A	191
	192	/*
	193	* statistics for improvement of the source address selection
	194	* algorithm:
	195	* XXX: hardcoded 16 = # of ip6 multicast scope types + 1
	196	*/
	197	/* number of times that address selection fails */
	198	u_quad_t ip6s_sources_none;
	199	/* number of times that an address on the outgoing I/F is chosen */
	200	u_quad_t ip6s_sources_sameif[16];
	201	/* number of times that an address on a non-outgoing I/F is chosen */
	202	u_quad_t ip6s_sources_otherif[16];
	203	/*
	204	* number of times that an address that has the same scope
	205	* from the destination is chosen.
	206	*/
	207	u_quad_t ip6s_sources_samescope[16];
	208	/*
	209	* number of times that an address that has a different scope
	210	* from the destination is chosen.
	211	*/
	212	u_quad_t ip6s_sources_otherscope[16];
	213	/* number of times that an deprecated address is chosen */
	214	u_quad_t ip6s_sources_deprecated[16];
9bccf70c A	215
	216	u_quad_t ip6s_forward_cachehit;
	217	u_quad_t ip6s_forward_cachemiss;
	218	};
	219
91447636	220	#ifdef KERNEL_PRIVATE
9bccf70c A	221	#ifdef KERNEL
	222	/*
	223	* IPv6 onion peeling state.
	224	* it will be initialized when we come into ip6_input().
	225	* XXX do not make it a kitchen sink!
	226	*/
	227	struct ip6aux {
	228	u_int32_t ip6a_flags;
	229	#define IP6A_SWAP 0x01 /* swapped home/care-of on packet */
	230	#define IP6A_HASEEN 0x02 /* HA was present */
	231	#define IP6A_BRUID 0x04 /* BR Unique Identifier was present */
	232	#define IP6A_RTALERTSEEN 0x08 /* rtalert present */
	233
	234	/* ip6.ip6_src */
	235	struct in6_addr ip6a_careof; /* care-of address of the peer */
	236	struct in6_addr ip6a_home; /* home address of the peer */
	237	u_int16_t ip6a_bruid; /* BR unique identifier */
	238
	239	/* ip6.ip6_dst */
	240	struct in6_ifaddr ip6a_dstia6; / my ifaddr that matches ip6_dst */
	241
	242	/* rtalert */
	243	u_int16_t ip6a_rtalert; /* rtalert option value */
	244
	245	/*
	246	* decapsulation history will be here.
	247	* with IPsec it may not be accurate.
	248	*/
1c79356b A	249	};
1c79356b A	250
1c79356b A	251	/* flags passed to ip6_output as last parameter */
	252	#define IPV6_DADOUTPUT 0x01 /* DAD */
	253	#define IPV6_FORWARDING 0x02 /* most of IPv6 header exists */
	254	#define IPV6_MINMTU 0x04 /* use minimum MTU (IPV6_USE_MIN_MTU) */
	255
	256	extern struct ip6stat ip6stat; /* statistics */
	257	extern u_int32_t ip6_id; /* fragment identifier */
	258	extern int ip6_defhlim; /* default hop limit */
	259	extern int ip6_defmcasthlim; /* default multicast hop limit */
	260	extern int ip6_forwarding; /* act as router? */
	261	extern int ip6_forward_srcrt; /* forward src-routed? */
	262	extern int ip6_gif_hlim; /* Hop limit for gif encap packet */
	263	extern int ip6_use_deprecated; /* allow deprecated addr as source */
	264	extern int ip6_rr_prune; /* router renumbering prefix
	265	* walk list every 5 sec. */
9bccf70c A	266	#define ip6_mapped_addr_on (!ip6_v6only)
9bccf70c A	267	extern int ip6_v6only;
1c79356b	268
e2fac8b1 A	269	extern int ip6_neighborgcthresh; /* Threshold # of NDP entries for GC */
	270	extern int ip6_maxifprefixes; /* Max acceptable prefixes via RA per IF */
	271	extern int ip6_maxifdefrouters; /* Max acceptable def routers via RA */
	272	extern int ip6_maxdynroutes; /* Max # of routes created via redirect */
	273
1c79356b A	274	extern struct socket ip6_mrouter; / multicast routing daemon */
1c79356b A	275	extern int ip6_sendredirects; /* send IP redirects when forwarding? */
91447636 A	276	extern int ip6_maxfragpackets; /* Maximum packets in reassembly queue */
91447636 A	277	extern int ip6_maxfrags; /* Maximum fragments in reassembly queue */
1c79356b A	278	extern int ip6_sourcecheck; /* Verify source interface */
	279	extern int ip6_sourcecheck_interval; /* Interval between log messages */
	280	extern int ip6_accept_rtadv; /* Acts as a host not a router */
	281	extern int ip6_keepfaith; /* Firewall Aided Internet Translator */
	282	extern int ip6_log_interval;
	283	extern time_t ip6_log_time;
	284	extern int ip6_hdrnestlimit; /* upper limit of # of extension headers */
	285	extern int ip6_dad_count; /* DupAddrDetectionTransmits */
	286
	287	extern u_int32_t ip6_flow_seq;
	288	extern int ip6_auto_flowlabel;
9bccf70c A	289	extern int ip6_auto_linklocal;
	290
	291	extern int ip6_anonportmin; /* minimum ephemeral port */
	292	extern int ip6_anonportmax; /* maximum ephemeral port */
	293	extern int ip6_lowportmin; /* minimum reserved port */
	294	extern int ip6_lowportmax; /* maximum reserved port */
	295
	296	extern int ip6_use_tempaddr; /* whether to use temporary addresses. */
1c79356b	297
1c79356b	298	extern struct pr_usrreqs rip6_usrreqs;
2d21ac55	299	extern struct pr_usrreqs icmp6_dgram_usrreqs;
9bccf70c	300	struct sockopt;
1c79356b A	301
1c79356b A	302	struct inpcb;
1c79356b	303
2d21ac55 A	304	int icmp6_ctloutput(struct socket , struct sockopt );
	305	int icmp6_dgram_ctloutput(struct socket , struct sockopt );
	306	int icmp6_dgram_send(struct socket , int , struct mbuf , struct sockaddr , struct mbuf , struct proc *);
	307	int icmp6_dgram_attach(struct socket , int , struct proc );
	308
1c79356b	309
9bccf70c	310	struct in6_ifaddr;
91447636 A	311	void ip6_init(void);
	312	void ip6intr(void);
	313	void ip6_input(struct mbuf *);
	314	struct in6_ifaddr ip6_getdstifaddr(struct mbuf );
	315	void ip6_freepcbopts(struct ip6_pktopts *);
	316	void ip6_freemoptions(struct ip6_moptions *);
	317	int ip6_unknown_opt(u_int8_t , struct mbuf , int, int);
	318	char * ip6_get_prevhdr(struct mbuf *, int);
	319	int ip6_nexthdr(struct mbuf , int, int, int );
	320	int ip6_lasthdr(struct mbuf , int, int, int );
	321
2d21ac55 A	322	struct ip6aux ip6_addaux(struct mbuf );
2d21ac55 A	323	struct ip6aux ip6_findaux(struct mbuf );
91447636 A	324	void ip6_delaux(struct mbuf *);
	325
	326	int ip6_mforward(struct ip6_hdr , struct ifnet , struct mbuf *);
	327	int ip6_process_hopopts(struct mbuf , u_int8_t , int, u_int32_t *,
	328	u_int32_t *);
	329	void ip6_savecontrol(struct inpcb , struct mbuf , struct ip6_hdr ,
	330	struct mbuf *);
	331	void ip6_notify_pmtu(struct inpcb , struct sockaddr_in6 ,
	332	u_int32_t *);
	333	int ip6_sysctl(int , u_int, void , size_t , void , size_t);
	334
2d21ac55	335	void ip6_forward(struct mbuf , struct route_in6 , int, int);
91447636 A	336
	337	void ip6_mloopback(struct ifnet , struct mbuf , struct sockaddr_in6 *);
	338	int ip6_output(struct mbuf , struct ip6_pktopts ,
9bccf70c A	339	struct route_in6 *,
9bccf70c A	340	int,
91447636 A	341	struct ip6_moptions , struct ifnet *, int locked);
	342	int ip6_ctloutput(struct socket , struct sockopt sopt);
	343	void init_ip6pktopts(struct ip6_pktopts *);
	344	int ip6_setpktoptions(struct mbuf , struct ip6_pktopts , int, int);
	345	void ip6_clearpktopts(struct ip6_pktopts *, int, int);
	346	struct ip6_pktopts ip6_copypktopts(struct ip6_pktopts , int);
	347	int ip6_optlen(struct inpcb *);
	348
	349	int route6_input(struct mbuf *, int );
	350
	351	void frag6_init(void);
	352	int frag6_input(struct mbuf *, int );
	353	void frag6_slowtimo(void);
	354	void frag6_drain(void);
	355
	356	void rip6_init(void);
	357	int rip6_input(struct mbuf *mp, int offset);
	358	void rip6_ctlinput(int, struct sockaddr , void );
	359	int rip6_ctloutput(struct socket so, struct sockopt sopt);
	360	int rip6_output(struct mbuf , struct socket , struct sockaddr_in6 , struct mbuf );
	361	int rip6_usrreq(struct socket *,
	362	int, struct mbuf , struct mbuf , struct mbuf , struct proc );
	363
	364	int dest6_input(struct mbuf *, int );
	365	int none_input(struct mbuf *, int );
9bccf70c	366	#endif /* KERNEL */
91447636	367	#endif /* KERNEL_PRIVATE */
1c79356b A	368
1c79356b A	369	#endif /* !_NETINET6_IP6_VAR_H_ */