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ip6_var.h revision 1.37.12.1
      1  1.37.12.1    bouyer /*	$NetBSD: ip6_var.h,v 1.37.12.1 2007/04/28 18:30:13 bouyer Exp $	*/
      2       1.13    itojun /*	$KAME: ip6_var.h,v 1.33 2000/06/11 14:59:20 jinmei Exp $	*/
      3        1.3   thorpej 
      4        1.2    itojun /*
      5        1.2    itojun  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
      6        1.2    itojun  * All rights reserved.
      7       1.13    itojun  *
      8        1.2    itojun  * Redistribution and use in source and binary forms, with or without
      9        1.2    itojun  * modification, are permitted provided that the following conditions
     10        1.2    itojun  * are met:
     11        1.2    itojun  * 1. Redistributions of source code must retain the above copyright
     12        1.2    itojun  *    notice, this list of conditions and the following disclaimer.
     13        1.2    itojun  * 2. Redistributions in binary form must reproduce the above copyright
     14        1.2    itojun  *    notice, this list of conditions and the following disclaimer in the
     15        1.2    itojun  *    documentation and/or other materials provided with the distribution.
     16        1.2    itojun  * 3. Neither the name of the project nor the names of its contributors
     17        1.2    itojun  *    may be used to endorse or promote products derived from this software
     18        1.2    itojun  *    without specific prior written permission.
     19       1.13    itojun  *
     20        1.2    itojun  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
     21        1.2    itojun  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     22        1.2    itojun  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     23        1.2    itojun  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
     24        1.2    itojun  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     25        1.2    itojun  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     26        1.2    itojun  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     27        1.2    itojun  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     28        1.2    itojun  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     29        1.2    itojun  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     30        1.2    itojun  * SUCH DAMAGE.
     31        1.2    itojun  */
     32        1.2    itojun 
     33        1.2    itojun /*
     34        1.2    itojun  * Copyright (c) 1982, 1986, 1993
     35        1.2    itojun  *	The Regents of the University of California.  All rights reserved.
     36        1.2    itojun  *
     37        1.2    itojun  * Redistribution and use in source and binary forms, with or without
     38        1.2    itojun  * modification, are permitted provided that the following conditions
     39        1.2    itojun  * are met:
     40        1.2    itojun  * 1. Redistributions of source code must retain the above copyright
     41        1.2    itojun  *    notice, this list of conditions and the following disclaimer.
     42        1.2    itojun  * 2. Redistributions in binary form must reproduce the above copyright
     43        1.2    itojun  *    notice, this list of conditions and the following disclaimer in the
     44        1.2    itojun  *    documentation and/or other materials provided with the distribution.
     45       1.29       agc  * 3. Neither the name of the University nor the names of its contributors
     46        1.2    itojun  *    may be used to endorse or promote products derived from this software
     47        1.2    itojun  *    without specific prior written permission.
     48        1.2    itojun  *
     49        1.2    itojun  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     50        1.2    itojun  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     51        1.2    itojun  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     52        1.2    itojun  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     53        1.2    itojun  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     54        1.2    itojun  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     55        1.2    itojun  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     56        1.2    itojun  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     57        1.2    itojun  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     58        1.2    itojun  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     59        1.2    itojun  * SUCH DAMAGE.
     60        1.2    itojun  *
     61        1.2    itojun  *	@(#)ip_var.h	8.1 (Berkeley) 6/10/93
     62        1.2    itojun  */
     63        1.2    itojun 
     64        1.2    itojun #ifndef _NETINET6_IP6_VAR_H_
     65        1.2    itojun #define _NETINET6_IP6_VAR_H_
     66        1.2    itojun 
     67        1.2    itojun /*
     68        1.2    itojun  * IP6 reassembly queue structure.  Each fragment
     69        1.2    itojun  * being reassembled is attached to one of these structures.
     70        1.2    itojun  */
     71        1.2    itojun struct	ip6q {
     72        1.9    itojun 	u_int32_t	ip6q_head;
     73        1.9    itojun 	u_int16_t	ip6q_len;
     74        1.9    itojun 	u_int8_t	ip6q_nxt;	/* ip6f_nxt in first fragment */
     75        1.9    itojun 	u_int8_t	ip6q_hlim;
     76        1.9    itojun 	struct ip6asfrag *ip6q_down;
     77        1.9    itojun 	struct ip6asfrag *ip6q_up;
     78        1.9    itojun 	u_int32_t	ip6q_ident;
     79        1.9    itojun 	u_int8_t	ip6q_arrive;
     80        1.9    itojun 	u_int8_t	ip6q_ttl;
     81        1.9    itojun 	struct in6_addr	ip6q_src, ip6q_dst;
     82        1.9    itojun 	struct ip6q	*ip6q_next;
     83        1.9    itojun 	struct ip6q	*ip6q_prev;
     84        1.9    itojun 	int		ip6q_unfrglen;	/* len of unfragmentable part */
     85        1.2    itojun #ifdef notyet
     86        1.9    itojun 	u_char		*ip6q_nxtp;
     87        1.2    itojun #endif
     88       1.19    itojun 	int		ip6q_nfrag;	/* # of fragments */
     89        1.2    itojun };
     90        1.2    itojun 
     91        1.2    itojun struct	ip6asfrag {
     92        1.9    itojun 	u_int32_t	ip6af_head;
     93        1.9    itojun 	u_int16_t	ip6af_len;
     94        1.9    itojun 	u_int8_t	ip6af_nxt;
     95        1.9    itojun 	u_int8_t	ip6af_hlim;
     96        1.2    itojun 	/* must not override the above members during reassembling */
     97        1.9    itojun 	struct ip6asfrag *ip6af_down;
     98        1.9    itojun 	struct ip6asfrag *ip6af_up;
     99        1.9    itojun 	struct mbuf	*ip6af_m;
    100        1.9    itojun 	int		ip6af_offset;	/* offset in ip6af_m to next header */
    101        1.9    itojun 	int		ip6af_frglen;	/* fragmentable part length */
    102        1.9    itojun 	int		ip6af_off;	/* fragment offset */
    103        1.9    itojun 	u_int16_t	ip6af_mff;	/* more fragment bit in frag off */
    104        1.2    itojun };
    105        1.2    itojun 
    106       1.21    itojun #define IP6_REASS_MBUF(ip6af) ((ip6af)->ip6af_m)
    107        1.2    itojun 
    108        1.2    itojun struct	ip6_moptions {
    109        1.2    itojun 	struct	ifnet *im6o_multicast_ifp; /* ifp for outgoing multicasts */
    110        1.2    itojun 	u_char	im6o_multicast_hlim;	/* hoplimit for outgoing multicasts */
    111        1.2    itojun 	u_char	im6o_multicast_loop;	/* 1 >= hear sends if a member */
    112        1.2    itojun 	LIST_HEAD(, in6_multi_mship) im6o_memberships;
    113        1.2    itojun };
    114        1.2    itojun 
    115        1.2    itojun /*
    116        1.2    itojun  * Control options for outgoing packets
    117        1.2    itojun  */
    118        1.2    itojun 
    119        1.2    itojun /* Routing header related info */
    120        1.2    itojun struct	ip6po_rhinfo {
    121        1.2    itojun 	struct	ip6_rthdr *ip6po_rhi_rthdr; /* Routing header */
    122        1.2    itojun 	struct	route_in6 ip6po_rhi_route; /* Route to the 1st hop */
    123        1.2    itojun };
    124        1.2    itojun #define ip6po_rthdr	ip6po_rhinfo.ip6po_rhi_rthdr
    125        1.2    itojun #define ip6po_route	ip6po_rhinfo.ip6po_rhi_route
    126        1.2    itojun 
    127       1.37    rpaulo /* Nexthop related info */
    128       1.37    rpaulo struct	ip6po_nhinfo {
    129       1.37    rpaulo 	struct	sockaddr *ip6po_nhi_nexthop;
    130       1.37    rpaulo 	struct	route_in6 ip6po_nhi_route; /* Route to the nexthop */
    131       1.37    rpaulo };
    132       1.37    rpaulo #define ip6po_nexthop	ip6po_nhinfo.ip6po_nhi_nexthop
    133       1.37    rpaulo #define ip6po_nextroute	ip6po_nhinfo.ip6po_nhi_route
    134       1.37    rpaulo 
    135        1.2    itojun struct	ip6_pktopts {
    136        1.2    itojun 	struct	mbuf *ip6po_m;	/* Pointer to mbuf storing the data */
    137        1.2    itojun 	int	ip6po_hlim;		/* Hoplimit for outgoing packets */
    138        1.2    itojun 	struct	in6_pktinfo *ip6po_pktinfo; /* Outgoing IF/address information */
    139       1.37    rpaulo 	struct	ip6po_nhinfo ip6po_nhinfo; /* Next-hop address information */
    140        1.2    itojun 	struct	ip6_hbh *ip6po_hbh; /* Hop-by-Hop options header */
    141        1.2    itojun 	struct	ip6_dest *ip6po_dest1; /* Destination options header(1st part) */
    142        1.2    itojun 	struct	ip6po_rhinfo ip6po_rhinfo; /* Routing header related info. */
    143        1.2    itojun 	struct	ip6_dest *ip6po_dest2; /* Destination options header(2nd part) */
    144       1.37    rpaulo 	int	ip6po_tclass;	/* traffic class */
    145       1.37    rpaulo 	int	ip6po_minmtu;  /* fragment vs PMTU discovery policy */
    146       1.37    rpaulo #define IP6PO_MINMTU_MCASTONLY	-1 /* default; send at min MTU for multicast*/
    147       1.37    rpaulo #define IP6PO_MINMTU_DISABLE	 0 /* always perform pmtu disc */
    148       1.37    rpaulo #define IP6PO_MINMTU_ALL	 1 /* always send at min MTU */
    149       1.37    rpaulo 	int ip6po_flags;
    150       1.37    rpaulo #if 0	/* parameters in this block is obsolete. do not reuse the values. */
    151       1.37    rpaulo #define IP6PO_REACHCONF	0x01	/* upper-layer reachability confirmation. */
    152       1.37    rpaulo #define IP6PO_MINMTU	0x02	/* use minimum MTU (IPV6_USE_MIN_MTU) */
    153       1.37    rpaulo #endif
    154       1.37    rpaulo #define IP6PO_DONTFRAG	0x04	/* disable fragmentation (IPV6_DONTFRAG) */
    155        1.2    itojun };
    156        1.2    itojun 
    157        1.2    itojun struct	ip6stat {
    158        1.5    bouyer 	u_quad_t ip6s_total;		/* total packets received */
    159        1.5    bouyer 	u_quad_t ip6s_tooshort;		/* packet too short */
    160        1.5    bouyer 	u_quad_t ip6s_toosmall;		/* not enough data */
    161        1.5    bouyer 	u_quad_t ip6s_fragments;	/* fragments received */
    162        1.5    bouyer 	u_quad_t ip6s_fragdropped;	/* frags dropped(dups, out of space) */
    163        1.5    bouyer 	u_quad_t ip6s_fragtimeout;	/* fragments timed out */
    164        1.5    bouyer 	u_quad_t ip6s_fragoverflow;	/* fragments that exceeded limit */
    165        1.5    bouyer 	u_quad_t ip6s_forward;		/* packets forwarded */
    166        1.5    bouyer 	u_quad_t ip6s_cantforward;	/* packets rcvd for unreachable dest */
    167        1.5    bouyer 	u_quad_t ip6s_redirectsent;	/* packets forwarded on same net */
    168        1.6    itojun 	u_quad_t ip6s_delivered;	/* datagrams delivered to upper level*/
    169        1.5    bouyer 	u_quad_t ip6s_localout;		/* total ip packets generated here */
    170        1.5    bouyer 	u_quad_t ip6s_odropped;		/* lost packets due to nobufs, etc. */
    171        1.5    bouyer 	u_quad_t ip6s_reassembled;	/* total packets reassembled ok */
    172       1.24       wiz 	u_quad_t ip6s_fragmented;	/* datagrams successfully fragmented */
    173        1.5    bouyer 	u_quad_t ip6s_ofragments;	/* output fragments created */
    174        1.5    bouyer 	u_quad_t ip6s_cantfrag;		/* don't fragment flag was set, etc. */
    175        1.5    bouyer 	u_quad_t ip6s_badoptions;	/* error in option processing */
    176        1.5    bouyer 	u_quad_t ip6s_noroute;		/* packets discarded due to no route */
    177        1.5    bouyer 	u_quad_t ip6s_badvers;		/* ip6 version != 6 */
    178        1.5    bouyer 	u_quad_t ip6s_rawout;		/* total raw ip packets generated */
    179        1.5    bouyer 	u_quad_t ip6s_badscope;		/* scope error */
    180        1.5    bouyer 	u_quad_t ip6s_notmember;	/* don't join this multicast group */
    181        1.5    bouyer 	u_quad_t ip6s_nxthist[256];	/* next header history */
    182        1.5    bouyer 	u_quad_t ip6s_m1;		/* one mbuf */
    183        1.5    bouyer 	u_quad_t ip6s_m2m[32];		/* two or more mbuf */
    184        1.5    bouyer 	u_quad_t ip6s_mext1;		/* one ext mbuf */
    185        1.5    bouyer 	u_quad_t ip6s_mext2m;		/* two or more ext mbuf */
    186        1.5    bouyer 	u_quad_t ip6s_exthdrtoolong;	/* ext hdr are not continuous */
    187        1.5    bouyer 	u_quad_t ip6s_nogif;		/* no match gif found */
    188        1.5    bouyer 	u_quad_t ip6s_toomanyhdr;	/* discarded due to too many headers */
    189       1.10    itojun 
    190       1.10    itojun 	/*
    191       1.10    itojun 	 * statistics for improvement of the source address selection
    192       1.10    itojun 	 * algorithm:
    193       1.10    itojun 	 * XXX: hardcoded 16 = # of ip6 multicast scope types + 1
    194       1.10    itojun 	 */
    195       1.10    itojun 	/* number of times that address selection fails */
    196       1.10    itojun 	u_quad_t ip6s_sources_none;
    197       1.10    itojun 	/* number of times that an address on the outgoing I/F is chosen */
    198       1.10    itojun 	u_quad_t ip6s_sources_sameif[16];
    199       1.10    itojun 	/* number of times that an address on a non-outgoing I/F is chosen */
    200       1.10    itojun 	u_quad_t ip6s_sources_otherif[16];
    201       1.10    itojun 	/*
    202       1.10    itojun 	 * number of times that an address that has the same scope
    203       1.10    itojun 	 * from the destination is chosen.
    204       1.10    itojun 	 */
    205       1.10    itojun 	u_quad_t ip6s_sources_samescope[16];
    206       1.10    itojun 	/*
    207       1.10    itojun 	 * number of times that an address that has a different scope
    208       1.10    itojun 	 * from the destination is chosen.
    209       1.10    itojun 	 */
    210       1.10    itojun 	u_quad_t ip6s_sources_otherscope[16];
    211       1.10    itojun 	/* number of times that an deprecated address is chosen */
    212       1.10    itojun 	u_quad_t ip6s_sources_deprecated[16];
    213       1.13    itojun 
    214       1.13    itojun 	u_quad_t ip6s_forward_cachehit;
    215       1.13    itojun 	u_quad_t ip6s_forward_cachemiss;
    216        1.2    itojun };
    217        1.2    itojun 
    218        1.2    itojun #ifdef _KERNEL
    219       1.35    rpaulo /*
    220       1.35    rpaulo  * Auxiliary attributes of incoming IPv6 packets, which is initialized when we
    221       1.35    rpaulo  * come into ip6_input().
    222       1.35    rpaulo  * XXX do not make it a kitchen sink!
    223       1.35    rpaulo  */
    224       1.35    rpaulo struct ip6aux {
    225       1.35    rpaulo 	/* ip6.ip6_dst */
    226       1.35    rpaulo 	struct in6_ifaddr *ip6a_dstia6;	/* my ifaddr that matches ip6_dst */
    227       1.35    rpaulo };
    228       1.35    rpaulo 
    229        1.2    itojun /* flags passed to ip6_output as last parameter */
    230       1.21    itojun #define	IPV6_UNSPECSRC		0x01	/* allow :: as the source address */
    231        1.2    itojun #define	IPV6_FORWARDING		0x02	/* most of IPv6 header exists */
    232       1.17    itojun #define	IPV6_MINMTU		0x04	/* use minimum MTU (IPV6_USE_MIN_MTU) */
    233       1.22   thorpej 
    234       1.22   thorpej #ifdef __NO_STRICT_ALIGNMENT
    235       1.22   thorpej #define	IP6_HDR_ALIGNED_P(ip)	1
    236       1.22   thorpej #else
    237       1.22   thorpej #define	IP6_HDR_ALIGNED_P(ip)	((((vaddr_t) (ip)) & 3) == 0)
    238       1.22   thorpej #endif
    239        1.2    itojun 
    240        1.2    itojun extern struct	ip6stat ip6stat;	/* statistics */
    241        1.4    itojun extern u_int32_t ip6_id;		/* fragment identifier */
    242        1.2    itojun extern int	ip6_defhlim;		/* default hop limit */
    243        1.2    itojun extern int	ip6_defmcasthlim;	/* default multicast hop limit */
    244        1.2    itojun extern int	ip6_forwarding;		/* act as router? */
    245       1.28    itojun extern int	ip6_sendredirect;	/* send ICMPv6 redirect? */
    246        1.2    itojun extern int	ip6_forward_srcrt;	/* forward src-routed? */
    247        1.6    itojun extern int	ip6_use_deprecated;	/* allow deprecated addr as source */
    248        1.6    itojun extern int	ip6_rr_prune;		/* router renumbering prefix
    249        1.6    itojun 					 * walk list every 5 sec.    */
    250       1.36    rpaulo extern int	ip6_mcast_pmtu;		/* enable pMTU discovery for multicast? */
    251       1.16    itojun extern int	ip6_v6only;
    252        1.6    itojun 
    253        1.2    itojun extern struct socket *ip6_mrouter; 	/* multicast routing daemon */
    254        1.2    itojun extern int	ip6_sendredirects;	/* send IP redirects when forwarding? */
    255        1.2    itojun extern int	ip6_maxfragpackets; /* Maximum packets in reassembly queue */
    256       1.19    itojun extern int	ip6_maxfrags;	/* Maximum fragments in reassembly queue */
    257        1.2    itojun extern int	ip6_sourcecheck;	/* Verify source interface */
    258        1.2    itojun extern int	ip6_sourcecheck_interval; /* Interval between log messages */
    259        1.2    itojun extern int	ip6_accept_rtadv;	/* Acts as a host not a router */
    260        1.2    itojun extern int	ip6_keepfaith;		/* Firewall Aided Internet Translator */
    261        1.2    itojun extern int	ip6_log_interval;
    262        1.2    itojun extern time_t	ip6_log_time;
    263        1.2    itojun extern int	ip6_hdrnestlimit; /* upper limit of # of extension headers */
    264        1.2    itojun extern int	ip6_dad_count;		/* DupAddrDetectionTransmits */
    265        1.2    itojun 
    266        1.2    itojun extern int ip6_auto_flowlabel;
    267       1.21    itojun extern int ip6_auto_linklocal;
    268       1.15    itojun 
    269       1.15    itojun extern int   ip6_anonportmin;		/* minimum ephemeral port */
    270       1.15    itojun extern int   ip6_anonportmax;		/* maximum ephemeral port */
    271       1.15    itojun extern int   ip6_lowportmin;		/* minimum reserved port */
    272       1.15    itojun extern int   ip6_lowportmax;		/* maximum reserved port */
    273        1.2    itojun 
    274       1.36    rpaulo extern int	ip6_use_tempaddr; /* whether to use temporary addresses. */
    275       1.36    rpaulo extern int	ip6_prefer_tempaddr; /* whether to prefer temporary addresses
    276       1.36    rpaulo 					in the source address selection */
    277       1.35    rpaulo extern int	ip6_use_defzone; /* whether to use the default scope zone
    278       1.35    rpaulo 				    when unspecified */
    279       1.35    rpaulo 
    280        1.2    itojun struct in6pcb;
    281        1.6    itojun 
    282        1.2    itojun int	icmp6_ctloutput __P((int, struct socket *, int, int, struct mbuf **));
    283  1.37.12.1    bouyer extern int	ip6_rht0;		/* processing routing header type 0 */
    284        1.6    itojun 
    285        1.2    itojun void	ip6_init __P((void));
    286        1.2    itojun void	ip6intr __P((void));
    287        1.2    itojun void	ip6_input __P((struct mbuf *));
    288       1.35    rpaulo struct in6_ifaddr *ip6_getdstifaddr __P((struct mbuf *));
    289       1.37    rpaulo void	ip6_freepcbopts __P((struct ip6_pktopts *));
    290        1.2    itojun void	ip6_freemoptions __P((struct ip6_moptions *));
    291        1.2    itojun int	ip6_unknown_opt __P((u_int8_t *, struct mbuf *, int));
    292       1.23    itojun u_int8_t *ip6_get_prevhdr __P((struct mbuf *, int));
    293       1.12    itojun int	ip6_nexthdr __P((struct mbuf *, int, int, int *));
    294       1.12    itojun int	ip6_lasthdr __P((struct mbuf *, int, int, int *));
    295       1.35    rpaulo 
    296       1.35    rpaulo struct m_tag *ip6_addaux __P((struct mbuf *));
    297       1.35    rpaulo struct m_tag *ip6_findaux __P((struct mbuf *));
    298       1.35    rpaulo void	ip6_delaux __P((struct mbuf *));
    299       1.35    rpaulo 
    300        1.2    itojun int	ip6_mforward __P((struct ip6_hdr *, struct ifnet *, struct mbuf *));
    301        1.4    itojun int	ip6_process_hopopts __P((struct mbuf *, u_int8_t *, int, u_int32_t *,
    302        1.2    itojun 				 u_int32_t *));
    303        1.2    itojun void	ip6_savecontrol __P((struct in6pcb *, struct mbuf **, struct ip6_hdr *,
    304        1.2    itojun 		struct mbuf *));
    305       1.37    rpaulo void	ip6_notify_pmtu __P((struct in6pcb *, struct sockaddr_in6 *,
    306       1.37    rpaulo 		u_int32_t *));
    307        1.2    itojun int	ip6_sysctl __P((int *, u_int, void *, size_t *, void *, size_t));
    308        1.2    itojun 
    309        1.2    itojun void	ip6_forward __P((struct mbuf *, int));
    310        1.2    itojun 
    311        1.2    itojun void	ip6_mloopback __P((struct ifnet *, struct mbuf *, struct sockaddr_in6 *));
    312        1.2    itojun int	ip6_output __P((struct mbuf *, struct ip6_pktopts *,
    313        1.2    itojun 			struct route_in6 *, int,
    314       1.31    itojun 			struct ip6_moptions *, struct socket *,
    315       1.30  jonathan 			struct ifnet **));
    316        1.2    itojun int	ip6_ctloutput __P((int, struct socket *, int, int, struct mbuf **));
    317       1.20    itojun int	ip6_raw_ctloutput __P((int, struct socket *, int, int, struct mbuf **));
    318       1.37    rpaulo void	ip6_initpktopts __P((struct ip6_pktopts *));
    319       1.37    rpaulo int	ip6_setpktopts __P((struct mbuf *, struct ip6_pktopts *,
    320       1.37    rpaulo 			    struct ip6_pktopts *, int, int));
    321       1.37    rpaulo void	ip6_clearpktopts __P((struct ip6_pktopts *, int));
    322       1.37    rpaulo struct ip6_pktopts *ip6_copypktopts __P((struct ip6_pktopts *, int));
    323        1.2    itojun int	ip6_optlen __P((struct in6pcb *));
    324        1.2    itojun 
    325        1.2    itojun int	route6_input __P((struct mbuf **, int *, int));
    326        1.2    itojun 
    327        1.2    itojun void	frag6_init __P((void));
    328        1.2    itojun int	frag6_input __P((struct mbuf **, int *, int));
    329        1.2    itojun void	frag6_slowtimo __P((void));
    330        1.2    itojun void	frag6_drain __P((void));
    331        1.2    itojun 
    332        1.2    itojun void	rip6_init __P((void));
    333       1.27    itojun int	rip6_input __P((struct mbuf **, int *, int));
    334       1.11    itojun void	rip6_ctlinput __P((int, struct sockaddr *, void *));
    335        1.2    itojun int	rip6_ctloutput __P((int, struct socket *, int, int, struct mbuf **));
    336        1.2    itojun int	rip6_output __P((struct mbuf *, ...));
    337        1.2    itojun int	rip6_usrreq __P((struct socket *,
    338       1.34  christos 	    int, struct mbuf *, struct mbuf *, struct mbuf *, struct lwp *));
    339        1.2    itojun 
    340        1.2    itojun int	dest6_input __P((struct mbuf **, int *, int));
    341        1.2    itojun int	none_input __P((struct mbuf **, int *, int));
    342       1.21    itojun 
    343       1.21    itojun struct 	in6_addr *in6_selectsrc __P((struct sockaddr_in6 *,
    344       1.21    itojun 	struct ip6_pktopts *, struct ip6_moptions *, struct route_in6 *,
    345       1.35    rpaulo 	struct in6_addr *, struct ifnet **, int *));
    346       1.35    rpaulo int in6_selectroute __P((struct sockaddr_in6 *, struct ip6_pktopts *,
    347       1.35    rpaulo 	struct ip6_moptions *, struct route_in6 *, struct ifnet **,
    348       1.35    rpaulo 	struct rtentry **, int));
    349       1.32    itojun 
    350       1.32    itojun u_int32_t ip6_randomid __P((void));
    351       1.32    itojun u_int32_t ip6_randomflowlabel __P((void));
    352        1.2    itojun #endif /* _KERNEL */
    353        1.2    itojun 
    354        1.2    itojun #endif /* !_NETINET6_IP6_VAR_H_ */
    355