[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 __APPLE_API_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
};

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
 */

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
/*
 * 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.
	 */
};
#endif

#ifdef KERNEL
/* 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 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_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;
struct sockopt;

struct inpcb;

int	icmp6_ctloutput __P((struct socket *, struct sockopt *sopt));

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

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

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

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

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

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

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

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

int	dest6_input __P((struct mbuf **, int *, int));
int	none_input __P((struct mbuf **, int *, int));
#endif /* KERNEL */
#endif /* __APPLE_API_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
9bccf70c	72	#ifdef __APPLE_API_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
	94	};
	95
	96	struct ip6asfrag {
	97	u_int32_t ip6af_head;
	98	u_int16_t ip6af_len;
	99	u_int8_t ip6af_nxt;
	100	u_int8_t ip6af_hlim;
	101	/* must not override the above members during reassembling */
	102	struct ip6asfrag *ip6af_down;
	103	struct ip6asfrag *ip6af_up;
	104	struct mbuf *ip6af_m;
	105	int ip6af_offset; /* offset in ip6af_m to next header */
	106	int ip6af_frglen; /* fragmentable part length */
	107	int ip6af_off; /* fragment offset */
	108	u_int16_t ip6af_mff; /* more fragment bit in frag off */
	109	};
	110
	111	#define IP6_REASS_MBUF(ip6af) ((struct mbuf *)&((ip6af)->ip6af_m))
	112
	113	struct ip6_moptions {
	114	struct ifnet im6o_multicast_ifp; / ifp for outgoing multicasts */
	115	u_char im6o_multicast_hlim; /* hoplimit for outgoing multicasts */
	116	u_char im6o_multicast_loop; /* 1 >= hear sends if a member */
	117	LIST_HEAD(, in6_multi_mship) im6o_memberships;
	118	};
	119
	120	/*
	121	* Control options for outgoing packets
	122	*/
	123
	124	/* Routing header related info */
	125	struct ip6po_rhinfo {
	126	struct ip6_rthdr ip6po_rhi_rthdr; / Routing header */
	127	struct route_in6 ip6po_rhi_route; /* Route to the 1st hop */
	128	};
	129	#define ip6po_rthdr ip6po_rhinfo.ip6po_rhi_rthdr
	130	#define ip6po_route ip6po_rhinfo.ip6po_rhi_route
	131
	132	struct ip6_pktopts {
9bccf70c	133	struct mbuf ip6po_m; / Pointer to mbuf storing the data */
1c79356b A	134	int ip6po_hlim; /* Hoplimit for outgoing packets */
	135
	136	/* Outgoing IF/address information */
	137	struct in6_pktinfo *ip6po_pktinfo;
	138
	139	struct sockaddr ip6po_nexthop; / Next-hop address */
	140
	141	struct ip6_hbh ip6po_hbh; / Hop-by-Hop options header */
	142
	143	/* Destination options header (before a routing header) */
	144	struct ip6_dest *ip6po_dest1;
	145
	146	/* Routing header related info. */
	147	struct ip6po_rhinfo ip6po_rhinfo;
	148
	149	/* Destination options header (after a routing header) */
	150	struct ip6_dest *ip6po_dest2;
1c79356b A	151	};
	152
	153	/*
	154	* Control options for incoming packets
	155	*/
	156
1c79356b A	157	struct ip6stat {
	158	u_quad_t ip6s_total; /* total packets received */
	159	u_quad_t ip6s_tooshort; /* packet too short */
	160	u_quad_t ip6s_toosmall; /* not enough data */
	161	u_quad_t ip6s_fragments; /* fragments received */
	162	u_quad_t ip6s_fragdropped; /* frags dropped(dups, out of space) */
	163	u_quad_t ip6s_fragtimeout; /* fragments timed out */
	164	u_quad_t ip6s_fragoverflow; /* fragments that exceeded limit */
	165	u_quad_t ip6s_forward; /* packets forwarded */
	166	u_quad_t ip6s_cantforward; /* packets rcvd for unreachable dest */
	167	u_quad_t ip6s_redirectsent; /* packets forwarded on same net */
	168	u_quad_t ip6s_delivered; /* datagrams delivered to upper level*/
	169	u_quad_t ip6s_localout; /* total ip packets generated here */
	170	u_quad_t ip6s_odropped; /* lost packets due to nobufs, etc. */
	171	u_quad_t ip6s_reassembled; /* total packets reassembled ok */
	172	u_quad_t ip6s_fragmented; /* datagrams sucessfully fragmented */
	173	u_quad_t ip6s_ofragments; /* output fragments created */
	174	u_quad_t ip6s_cantfrag; /* don't fragment flag was set, etc. */
	175	u_quad_t ip6s_badoptions; /* error in option processing */
	176	u_quad_t ip6s_noroute; /* packets discarded due to no route */
	177	u_quad_t ip6s_badvers; /* ip6 version != 6 */
	178	u_quad_t ip6s_rawout; /* total raw ip packets generated */
	179	u_quad_t ip6s_badscope; /* scope error */
	180	u_quad_t ip6s_notmember; /* don't join this multicast group */
	181	u_quad_t ip6s_nxthist[256]; /* next header history */
	182	u_quad_t ip6s_m1; /* one mbuf */
	183	u_quad_t ip6s_m2m[32]; /* two or more mbuf */
	184	u_quad_t ip6s_mext1; /* one ext mbuf */
	185	u_quad_t ip6s_mext2m; /* two or more ext mbuf */
	186	u_quad_t ip6s_exthdrtoolong; /* ext hdr are not continuous */
	187	u_quad_t ip6s_nogif; /* no match gif found */
	188	u_quad_t ip6s_toomanyhdr; /* discarded due to too many headers */
1c79356b A	189
	190	/*
	191	* statistics for improvement of the source address selection
	192	* algorithm:
	193	* XXX: hardcoded 16 = # of ip6 multicast scope types + 1
	194	*/
	195	/* number of times that address selection fails */
	196	u_quad_t ip6s_sources_none;
	197	/* number of times that an address on the outgoing I/F is chosen */
	198	u_quad_t ip6s_sources_sameif[16];
	199	/* number of times that an address on a non-outgoing I/F is chosen */
	200	u_quad_t ip6s_sources_otherif[16];
	201	/*
	202	* number of times that an address that has the same scope
	203	* from the destination is chosen.
	204	*/
	205	u_quad_t ip6s_sources_samescope[16];
	206	/*
	207	* number of times that an address that has a different scope
	208	* from the destination is chosen.
	209	*/
	210	u_quad_t ip6s_sources_otherscope[16];
	211	/* number of times that an deprecated address is chosen */
	212	u_quad_t ip6s_sources_deprecated[16];
9bccf70c A	213
	214	u_quad_t ip6s_forward_cachehit;
	215	u_quad_t ip6s_forward_cachemiss;
	216	};
	217
	218	#ifdef KERNEL
	219	/*
	220	* IPv6 onion peeling state.
	221	* it will be initialized when we come into ip6_input().
	222	* XXX do not make it a kitchen sink!
	223	*/
	224	struct ip6aux {
	225	u_int32_t ip6a_flags;
	226	#define IP6A_SWAP 0x01 /* swapped home/care-of on packet */
	227	#define IP6A_HASEEN 0x02 /* HA was present */
	228	#define IP6A_BRUID 0x04 /* BR Unique Identifier was present */
	229	#define IP6A_RTALERTSEEN 0x08 /* rtalert present */
	230
	231	/* ip6.ip6_src */
	232	struct in6_addr ip6a_careof; /* care-of address of the peer */
	233	struct in6_addr ip6a_home; /* home address of the peer */
	234	u_int16_t ip6a_bruid; /* BR unique identifier */
	235
	236	/* ip6.ip6_dst */
	237	struct in6_ifaddr ip6a_dstia6; / my ifaddr that matches ip6_dst */
	238
	239	/* rtalert */
	240	u_int16_t ip6a_rtalert; /* rtalert option value */
	241
	242	/*
	243	* decapsulation history will be here.
	244	* with IPsec it may not be accurate.
	245	*/
1c79356b	246	};
9bccf70c	247	#endif
1c79356b	248
9bccf70c	249	#ifdef KERNEL
1c79356b A	250	/* flags passed to ip6_output as last parameter */
	251	#define IPV6_DADOUTPUT 0x01 /* DAD */
	252	#define IPV6_FORWARDING 0x02 /* most of IPv6 header exists */
	253	#define IPV6_MINMTU 0x04 /* use minimum MTU (IPV6_USE_MIN_MTU) */
	254
	255	extern struct ip6stat ip6stat; /* statistics */
	256	extern u_int32_t ip6_id; /* fragment identifier */
	257	extern int ip6_defhlim; /* default hop limit */
	258	extern int ip6_defmcasthlim; /* default multicast hop limit */
	259	extern int ip6_forwarding; /* act as router? */
	260	extern int ip6_forward_srcrt; /* forward src-routed? */
	261	extern int ip6_gif_hlim; /* Hop limit for gif encap packet */
	262	extern int ip6_use_deprecated; /* allow deprecated addr as source */
	263	extern int ip6_rr_prune; /* router renumbering prefix
	264	* walk list every 5 sec. */
9bccf70c A	265	#define ip6_mapped_addr_on (!ip6_v6only)
9bccf70c A	266	extern int ip6_v6only;
1c79356b A	267
	268	extern struct socket ip6_mrouter; / multicast routing daemon */
	269	extern int ip6_sendredirects; /* send IP redirects when forwarding? */
	270	extern int ip6_maxfragpackets; /* Maximum packets in reassembly queue */
	271	extern int ip6_sourcecheck; /* Verify source interface */
	272	extern int ip6_sourcecheck_interval; /* Interval between log messages */
	273	extern int ip6_accept_rtadv; /* Acts as a host not a router */
	274	extern int ip6_keepfaith; /* Firewall Aided Internet Translator */
	275	extern int ip6_log_interval;
	276	extern time_t ip6_log_time;
	277	extern int ip6_hdrnestlimit; /* upper limit of # of extension headers */
	278	extern int ip6_dad_count; /* DupAddrDetectionTransmits */
	279
	280	extern u_int32_t ip6_flow_seq;
	281	extern int ip6_auto_flowlabel;
9bccf70c A	282	extern int ip6_auto_linklocal;
	283
	284	extern int ip6_anonportmin; /* minimum ephemeral port */
	285	extern int ip6_anonportmax; /* maximum ephemeral port */
	286	extern int ip6_lowportmin; /* minimum reserved port */
	287	extern int ip6_lowportmax; /* maximum reserved port */
	288
	289	extern int ip6_use_tempaddr; /* whether to use temporary addresses. */
1c79356b	290
1c79356b	291	extern struct pr_usrreqs rip6_usrreqs;
9bccf70c	292	struct sockopt;
1c79356b A	293
1c79356b A	294	struct inpcb;
1c79356b	295
1c79356b	296	int icmp6_ctloutput __P((struct socket , struct sockopt sopt));
1c79356b	297
9bccf70c	298	struct in6_ifaddr;
1c79356b A	299	void ip6_init __P((void));
	300	void ip6intr __P((void));
	301	void ip6_input __P((struct mbuf *));
9bccf70c	302	struct in6_ifaddr ip6_getdstifaddr __P((struct mbuf ));
1c79356b A	303	void ip6_freepcbopts __P((struct ip6_pktopts *));
	304	void ip6_freemoptions __P((struct ip6_moptions *));
	305	int ip6_unknown_opt __P((u_int8_t , struct mbuf , int));
	306	char * ip6_get_prevhdr __P((struct mbuf *, int));
	307	int ip6_nexthdr __P((struct mbuf , int, int, int ));
	308	int ip6_lasthdr __P((struct mbuf , int, int, int ));
9bccf70c A	309
	310	struct mbuf ip6_addaux __P((struct mbuf ));
	311	struct mbuf ip6_findaux __P((struct mbuf ));
	312	void ip6_delaux __P((struct mbuf *));
	313
1c79356b A	314	int ip6_mforward __P((struct ip6_hdr , struct ifnet , struct mbuf *));
	315	int ip6_process_hopopts __P((struct mbuf , u_int8_t , int, u_int32_t *,
	316	u_int32_t *));
9bccf70c A	317	void ip6_savecontrol __P((struct inpcb , struct mbuf , struct ip6_hdr ,
	318	struct mbuf *));
	319	void ip6_notify_pmtu __P((struct inpcb , struct sockaddr_in6 ,
	320	u_int32_t *));
1c79356b A	321	int ip6_sysctl __P((int , u_int, void , size_t , void , size_t));
	322
	323	void ip6_forward __P((struct mbuf *, int));
	324
	325	void ip6_mloopback __P((struct ifnet , struct mbuf , struct sockaddr_in6 *));
	326	int ip6_output __P((struct mbuf , struct ip6_pktopts ,
9bccf70c A	327	struct route_in6 *,
9bccf70c A	328	int,
1c79356b	329	struct ip6_moptions , struct ifnet *));
1c79356b	330	int ip6_ctloutput __P((struct socket , struct sockopt sopt));
9bccf70c	331	void init_ip6pktopts __P((struct ip6_pktopts *));
1c79356b A	332	int ip6_setpktoptions __P((struct mbuf , struct ip6_pktopts , int, int));
	333	void ip6_clearpktopts __P((struct ip6_pktopts *, int, int));
	334	struct ip6_pktopts ip6_copypktopts __P((struct ip6_pktopts , int));
1c79356b	335	int ip6_optlen __P((struct inpcb *));
1c79356b A	336
	337	int route6_input __P((struct mbuf *, int , int));
	338
	339	void frag6_init __P((void));
	340	int frag6_input __P((struct mbuf *, int , int));
	341	void frag6_slowtimo __P((void));
	342	void frag6_drain __P((void));
	343
	344	void rip6_init __P((void));
9bccf70c	345	int rip6_input __P((struct mbuf *mp, int offset));
1c79356b	346	void rip6_ctlinput __P((int, struct sockaddr , void ));
1c79356b	347	int rip6_ctloutput __P((struct socket so, struct sockopt sopt));
9bccf70c	348	int rip6_output __P((struct mbuf , struct socket , struct sockaddr_in6 , struct mbuf ));
1c79356b A	349	int rip6_usrreq __P((struct socket *,
	350	int, struct mbuf , struct mbuf , struct mbuf , struct proc ));
	351
	352	int dest6_input __P((struct mbuf *, int , int));
	353	int none_input __P((struct mbuf *, int , int));
9bccf70c A	354	#endif /* KERNEL */
9bccf70c A	355	#endif /* __APPLE_API_PRIVATE */
1c79356b A	356
1c79356b A	357	#endif /* !_NETINET6_IP6_VAR_H_ */