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ip6_var.h revision 1.4.8.1
      1  1.4.8.1  wrstuden /*	$NetBSD: ip6_var.h,v 1.4.8.1 1999/12/27 18:36:26 wrstuden Exp $	*/
      2      1.3   thorpej 
      3      1.2    itojun /*
      4      1.2    itojun  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
      5      1.2    itojun  * All rights reserved.
      6      1.2    itojun  *
      7      1.2    itojun  * Redistribution and use in source and binary forms, with or without
      8      1.2    itojun  * modification, are permitted provided that the following conditions
      9      1.2    itojun  * are met:
     10      1.2    itojun  * 1. Redistributions of source code must retain the above copyright
     11      1.2    itojun  *    notice, this list of conditions and the following disclaimer.
     12      1.2    itojun  * 2. Redistributions in binary form must reproduce the above copyright
     13      1.2    itojun  *    notice, this list of conditions and the following disclaimer in the
     14      1.2    itojun  *    documentation and/or other materials provided with the distribution.
     15      1.2    itojun  * 3. Neither the name of the project nor the names of its contributors
     16      1.2    itojun  *    may be used to endorse or promote products derived from this software
     17      1.2    itojun  *    without specific prior written permission.
     18      1.2    itojun  *
     19      1.2    itojun  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
     20      1.2    itojun  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21      1.2    itojun  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22      1.2    itojun  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
     23      1.2    itojun  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24      1.2    itojun  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25      1.2    itojun  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26      1.2    itojun  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27      1.2    itojun  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28      1.2    itojun  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29      1.2    itojun  * SUCH DAMAGE.
     30      1.2    itojun  */
     31      1.2    itojun 
     32      1.2    itojun /*
     33      1.2    itojun  * Copyright (c) 1982, 1986, 1993
     34      1.2    itojun  *	The Regents of the University of California.  All rights reserved.
     35      1.2    itojun  *
     36      1.2    itojun  * Redistribution and use in source and binary forms, with or without
     37      1.2    itojun  * modification, are permitted provided that the following conditions
     38      1.2    itojun  * are met:
     39      1.2    itojun  * 1. Redistributions of source code must retain the above copyright
     40      1.2    itojun  *    notice, this list of conditions and the following disclaimer.
     41      1.2    itojun  * 2. Redistributions in binary form must reproduce the above copyright
     42      1.2    itojun  *    notice, this list of conditions and the following disclaimer in the
     43      1.2    itojun  *    documentation and/or other materials provided with the distribution.
     44      1.2    itojun  * 3. All advertising materials mentioning features or use of this software
     45      1.2    itojun  *    must display the following acknowledgement:
     46      1.2    itojun  *	This product includes software developed by the University of
     47      1.2    itojun  *	California, Berkeley and its contributors.
     48      1.2    itojun  * 4. Neither the name of the University nor the names of its contributors
     49      1.2    itojun  *    may be used to endorse or promote products derived from this software
     50      1.2    itojun  *    without specific prior written permission.
     51      1.2    itojun  *
     52      1.2    itojun  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     53      1.2    itojun  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     54      1.2    itojun  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     55      1.2    itojun  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     56      1.2    itojun  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     57      1.2    itojun  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     58      1.2    itojun  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     59      1.2    itojun  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     60      1.2    itojun  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     61      1.2    itojun  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     62      1.2    itojun  * SUCH DAMAGE.
     63      1.2    itojun  *
     64      1.2    itojun  *	@(#)ip_var.h	8.1 (Berkeley) 6/10/93
     65      1.2    itojun  */
     66      1.2    itojun 
     67      1.2    itojun #ifndef _NETINET6_IP6_VAR_H_
     68      1.2    itojun #define _NETINET6_IP6_VAR_H_
     69      1.2    itojun 
     70      1.2    itojun /*
     71      1.2    itojun  * IP6 reassembly queue structure.  Each fragment
     72      1.2    itojun  * being reassembled is attached to one of these structures.
     73      1.2    itojun  */
     74      1.2    itojun struct	ip6q {
     75      1.2    itojun 	u_long	ip6q_head;
     76      1.2    itojun 	u_short	ip6q_len;
     77      1.2    itojun 	u_char	ip6q_nxt;
     78      1.2    itojun 	u_char	ip6q_hlim;
     79      1.2    itojun 	struct	ip6asfrag *ip6q_down;
     80      1.2    itojun 	struct	ip6asfrag *ip6q_up;
     81      1.2    itojun 	u_long	ip6q_ident;
     82      1.2    itojun 	u_char	ip6q_arrive;
     83      1.2    itojun 	u_char	ip6q_ttl;
     84      1.2    itojun 	struct  in6_addr ip6q_src, ip6q_dst;
     85      1.2    itojun 	struct	ip6q *ip6q_next;
     86      1.2    itojun 	struct	ip6q *ip6q_prev;
     87      1.2    itojun 	int	ip6q_unfrglen;
     88      1.2    itojun #ifdef notyet
     89      1.2    itojun 	u_char	*ip6q_nxtp;
     90      1.2    itojun #endif
     91      1.2    itojun };
     92      1.2    itojun 
     93      1.2    itojun struct	ip6asfrag {
     94      1.2    itojun 	u_long	ip6af_head;
     95      1.2    itojun 	u_short	ip6af_len;
     96      1.2    itojun 	u_char	ip6af_nxt;
     97      1.2    itojun 	u_char	ip6af_hlim;
     98      1.2    itojun 	/* must not override the above members during reassembling */
     99      1.2    itojun 	struct	ip6asfrag *ip6af_down;
    100      1.2    itojun 	struct	ip6asfrag *ip6af_up;
    101      1.2    itojun 	u_short	ip6af_mff;
    102      1.2    itojun 	u_short	ip6af_off;
    103      1.2    itojun 	struct	mbuf *ip6af_m;
    104      1.2    itojun 	u_long	ip6af_offset;		/* offset where next header starts */
    105      1.2    itojun 	u_short ip6af_frglen;	/* fragmentable part length */
    106      1.2    itojun 	u_char	ip6af_x1[10];
    107      1.2    itojun };
    108      1.2    itojun 
    109      1.2    itojun #define IP6_REASS_MBUF(ip6af) (*(struct mbuf **)&((ip6af)->ip6af_m))
    110      1.2    itojun 
    111      1.2    itojun struct	ip6_moptions {
    112      1.2    itojun 	struct	ifnet *im6o_multicast_ifp; /* ifp for outgoing multicasts */
    113      1.2    itojun 	u_char	im6o_multicast_hlim;	/* hoplimit for outgoing multicasts */
    114      1.2    itojun 	u_char	im6o_multicast_loop;	/* 1 >= hear sends if a member */
    115      1.2    itojun 	LIST_HEAD(, in6_multi_mship) im6o_memberships;
    116      1.2    itojun };
    117      1.2    itojun 
    118      1.2    itojun /*
    119      1.2    itojun  * Control options for outgoing packets
    120      1.2    itojun  */
    121      1.2    itojun 
    122      1.2    itojun /* Routing header related info */
    123      1.2    itojun struct	ip6po_rhinfo {
    124      1.2    itojun 	struct	ip6_rthdr *ip6po_rhi_rthdr; /* Routing header */
    125      1.2    itojun 	struct	route_in6 ip6po_rhi_route; /* Route to the 1st hop */
    126      1.2    itojun };
    127      1.2    itojun #define ip6po_rthdr	ip6po_rhinfo.ip6po_rhi_rthdr
    128      1.2    itojun #define ip6po_route	ip6po_rhinfo.ip6po_rhi_route
    129      1.2    itojun 
    130      1.2    itojun struct	ip6_pktopts {
    131      1.2    itojun 	struct	mbuf *ip6po_m;	/* Pointer to mbuf storing the data */
    132      1.2    itojun 	int	ip6po_hlim;		/* Hoplimit for outgoing packets */
    133      1.2    itojun 	struct	in6_pktinfo *ip6po_pktinfo; /* Outgoing IF/address information */
    134      1.2    itojun 	struct	sockaddr *ip6po_nexthop;	/* Next-hop address */
    135      1.2    itojun 	struct	ip6_hbh *ip6po_hbh; /* Hop-by-Hop options header */
    136      1.2    itojun 	struct	ip6_dest *ip6po_dest1; /* Destination options header(1st part) */
    137      1.2    itojun 	struct	ip6po_rhinfo ip6po_rhinfo; /* Routing header related info. */
    138      1.2    itojun 	struct	ip6_dest *ip6po_dest2; /* Destination options header(2nd part) */
    139      1.2    itojun };
    140      1.2    itojun 
    141      1.2    itojun struct	ip6stat {
    142  1.4.8.1  wrstuden 	u_quad_t ip6s_total;		/* total packets received */
    143  1.4.8.1  wrstuden 	u_quad_t ip6s_tooshort;		/* packet too short */
    144  1.4.8.1  wrstuden 	u_quad_t ip6s_toosmall;		/* not enough data */
    145  1.4.8.1  wrstuden 	u_quad_t ip6s_fragments;	/* fragments received */
    146  1.4.8.1  wrstuden 	u_quad_t ip6s_fragdropped;	/* frags dropped(dups, out of space) */
    147  1.4.8.1  wrstuden 	u_quad_t ip6s_fragtimeout;	/* fragments timed out */
    148  1.4.8.1  wrstuden 	u_quad_t ip6s_fragoverflow;	/* fragments that exceeded limit */
    149  1.4.8.1  wrstuden 	u_quad_t ip6s_forward;		/* packets forwarded */
    150  1.4.8.1  wrstuden 	u_quad_t ip6s_cantforward;	/* packets rcvd for unreachable dest */
    151  1.4.8.1  wrstuden 	u_quad_t ip6s_redirectsent;	/* packets forwarded on same net */
    152  1.4.8.1  wrstuden 	u_quad_t ip6s_delivered;	/* datagrams delivered to upper level*/
    153  1.4.8.1  wrstuden 	u_quad_t ip6s_localout;		/* total ip packets generated here */
    154  1.4.8.1  wrstuden 	u_quad_t ip6s_odropped;		/* lost packets due to nobufs, etc. */
    155  1.4.8.1  wrstuden 	u_quad_t ip6s_reassembled;	/* total packets reassembled ok */
    156  1.4.8.1  wrstuden 	u_quad_t ip6s_fragmented;	/* datagrams sucessfully fragmented */
    157  1.4.8.1  wrstuden 	u_quad_t ip6s_ofragments;	/* output fragments created */
    158  1.4.8.1  wrstuden 	u_quad_t ip6s_cantfrag;		/* don't fragment flag was set, etc. */
    159  1.4.8.1  wrstuden 	u_quad_t ip6s_badoptions;	/* error in option processing */
    160  1.4.8.1  wrstuden 	u_quad_t ip6s_noroute;		/* packets discarded due to no route */
    161  1.4.8.1  wrstuden 	u_quad_t ip6s_badvers;		/* ip6 version != 6 */
    162  1.4.8.1  wrstuden 	u_quad_t ip6s_rawout;		/* total raw ip packets generated */
    163  1.4.8.1  wrstuden 	u_quad_t ip6s_badscope;		/* scope error */
    164  1.4.8.1  wrstuden 	u_quad_t ip6s_notmember;	/* don't join this multicast group */
    165  1.4.8.1  wrstuden 	u_quad_t ip6s_nxthist[256];	/* next header history */
    166  1.4.8.1  wrstuden 	u_quad_t ip6s_m1;		/* one mbuf */
    167  1.4.8.1  wrstuden 	u_quad_t ip6s_m2m[32];		/* two or more mbuf */
    168  1.4.8.1  wrstuden 	u_quad_t ip6s_mext1;		/* one ext mbuf */
    169  1.4.8.1  wrstuden 	u_quad_t ip6s_mext2m;		/* two or more ext mbuf */
    170  1.4.8.1  wrstuden 	u_quad_t ip6s_exthdrtoolong;	/* ext hdr are not continuous */
    171  1.4.8.1  wrstuden 	u_quad_t ip6s_nogif;		/* no match gif found */
    172  1.4.8.1  wrstuden 	u_quad_t ip6s_toomanyhdr;	/* discarded due to too many headers */
    173  1.4.8.1  wrstuden 	/* XXX the following two items are not really AF_INET6 thing */
    174  1.4.8.1  wrstuden 	u_quad_t ip6s_pulldown;		/* # of calls to m_pulldown */
    175  1.4.8.1  wrstuden 	u_quad_t ip6s_pulldown_copy;	/* # of mbuf copies in m_pulldown */
    176  1.4.8.1  wrstuden 	u_quad_t ip6s_pulldown_alloc;	/* # of mbuf allocs in m_pulldown */
    177      1.2    itojun };
    178      1.2    itojun 
    179      1.2    itojun #ifdef _KERNEL
    180      1.2    itojun /* flags passed to ip6_output as last parameter */
    181      1.2    itojun #define	IPV6_DADOUTPUT		0x01	/* DAD */
    182      1.2    itojun #define	IPV6_FORWARDING		0x02	/* most of IPv6 header exists */
    183      1.2    itojun 
    184      1.2    itojun extern struct	ip6stat ip6stat;	/* statistics */
    185      1.4    itojun extern u_int32_t ip6_id;		/* fragment identifier */
    186      1.2    itojun extern int	ip6_defhlim;		/* default hop limit */
    187      1.2    itojun extern int	ip6_defmcasthlim;	/* default multicast hop limit */
    188      1.2    itojun extern int	ip6_forwarding;		/* act as router? */
    189      1.2    itojun extern int	ip6_forward_srcrt;	/* forward src-routed? */
    190      1.2    itojun extern int	ip6_gif_hlim;		/* Hop limit for gif encap packet */
    191  1.4.8.1  wrstuden extern int	ip6_use_deprecated;	/* allow deprecated addr as source */
    192  1.4.8.1  wrstuden extern int	ip6_rr_prune;		/* router renumbering prefix
    193  1.4.8.1  wrstuden 					 * walk list every 5 sec.    */
    194  1.4.8.1  wrstuden #ifdef MAPPED_ADDR_ENABLED
    195  1.4.8.1  wrstuden extern int	ip6_mapped_addr_on;
    196  1.4.8.1  wrstuden #endif /* MAPPED_ADDR_ENABLED */
    197  1.4.8.1  wrstuden 
    198      1.2    itojun extern struct socket *ip6_mrouter; 	/* multicast routing daemon */
    199      1.2    itojun extern int	ip6_sendredirects;	/* send IP redirects when forwarding? */
    200      1.2    itojun extern int	ip6_maxfragpackets; /* Maximum packets in reassembly queue */
    201      1.2    itojun extern int	ip6_sourcecheck;	/* Verify source interface */
    202      1.2    itojun extern int	ip6_sourcecheck_interval; /* Interval between log messages */
    203      1.2    itojun extern int	ip6_accept_rtadv;	/* Acts as a host not a router */
    204      1.2    itojun extern int	ip6_keepfaith;		/* Firewall Aided Internet Translator */
    205      1.2    itojun extern int	ip6_log_interval;
    206      1.2    itojun extern time_t	ip6_log_time;
    207      1.2    itojun extern int	ip6_hdrnestlimit; /* upper limit of # of extension headers */
    208      1.2    itojun extern int	ip6_dad_count;		/* DupAddrDetectionTransmits */
    209      1.2    itojun 
    210      1.2    itojun extern u_int32_t ip6_flow_seq;
    211      1.2    itojun extern int ip6_auto_flowlabel;
    212      1.2    itojun 
    213  1.4.8.1  wrstuden #if !(defined(__FreeBSD__) && __FreeBSD__ >= 3)
    214      1.2    itojun struct in6pcb;
    215      1.2    itojun #endif
    216  1.4.8.1  wrstuden #if defined(__FreeBSD__) && __FreeBSD__ >= 3
    217  1.4.8.1  wrstuden extern struct	pr_usrreqs rip6_usrreqs;
    218  1.4.8.1  wrstuden struct sockopt;
    219  1.4.8.1  wrstuden #endif
    220  1.4.8.1  wrstuden 
    221  1.4.8.1  wrstuden #if (defined(__FreeBSD__) && __FreeBSD__ >= 3) || defined(__OpenBSD__) || (defined(__bsdi__) && _BSDI_VERSION >= 199802)
    222  1.4.8.1  wrstuden struct inpcb;
    223  1.4.8.1  wrstuden #endif
    224      1.2    itojun 
    225  1.4.8.1  wrstuden #if defined(__FreeBSD__) && __FreeBSD__ >= 3
    226  1.4.8.1  wrstuden int	icmp6_ctloutput __P((struct socket *, struct sockopt *sopt));
    227  1.4.8.1  wrstuden #else
    228      1.2    itojun int	icmp6_ctloutput __P((int, struct socket *, int, int, struct mbuf **));
    229  1.4.8.1  wrstuden #endif
    230  1.4.8.1  wrstuden 
    231      1.2    itojun void	ip6_init __P((void));
    232      1.2    itojun void	ip6intr __P((void));
    233      1.2    itojun void	ip6_input __P((struct mbuf *));
    234      1.2    itojun void	ip6_freemoptions __P((struct ip6_moptions *));
    235      1.2    itojun int	ip6_unknown_opt __P((u_int8_t *, struct mbuf *, int));
    236      1.2    itojun char *	ip6_get_prevhdr __P((struct mbuf *, int));
    237      1.2    itojun int	ip6_mforward __P((struct ip6_hdr *, struct ifnet *, struct mbuf *));
    238      1.4    itojun int	ip6_process_hopopts __P((struct mbuf *, u_int8_t *, int, u_int32_t *,
    239      1.2    itojun 				 u_int32_t *));
    240  1.4.8.1  wrstuden #if (defined(__FreeBSD__) && __FreeBSD__ >= 3) || defined(__OpenBSD__) || (defined(__bsdi__) && _BSDI_VERSION >= 199802)
    241  1.4.8.1  wrstuden void	ip6_savecontrol __P((struct inpcb *, struct mbuf **, struct ip6_hdr *,
    242  1.4.8.1  wrstuden 		struct mbuf *));
    243  1.4.8.1  wrstuden #else
    244      1.2    itojun void	ip6_savecontrol __P((struct in6pcb *, struct mbuf **, struct ip6_hdr *,
    245      1.2    itojun 		struct mbuf *));
    246  1.4.8.1  wrstuden #endif
    247      1.2    itojun int	ip6_sysctl __P((int *, u_int, void *, size_t *, void *, size_t));
    248      1.2    itojun 
    249      1.2    itojun void	ip6_forward __P((struct mbuf *, int));
    250      1.2    itojun 
    251      1.2    itojun void	ip6_mloopback __P((struct ifnet *, struct mbuf *, struct sockaddr_in6 *));
    252      1.2    itojun int	ip6_output __P((struct mbuf *, struct ip6_pktopts *,
    253      1.2    itojun 			struct route_in6 *, int,
    254  1.4.8.1  wrstuden 			struct ip6_moptions *, struct ifnet **));
    255  1.4.8.1  wrstuden #if defined(__FreeBSD__) && __FreeBSD__ >= 3
    256  1.4.8.1  wrstuden int	ip6_ctloutput __P((struct socket *, struct sockopt *sopt));
    257  1.4.8.1  wrstuden #else
    258      1.2    itojun int	ip6_ctloutput __P((int, struct socket *, int, int, struct mbuf **));
    259  1.4.8.1  wrstuden #endif
    260      1.2    itojun int	ip6_setpktoptions __P((struct mbuf *, struct ip6_pktopts *, int));
    261  1.4.8.1  wrstuden #if (defined(__FreeBSD__) && __FreeBSD__ >= 3) || defined(__OpenBSD__) || (defined(__bsdi__) && _BSDI_VERSION >= 199802)
    262  1.4.8.1  wrstuden int	ip6_optlen __P((struct inpcb *));
    263  1.4.8.1  wrstuden #else
    264      1.2    itojun int	ip6_optlen __P((struct in6pcb *));
    265  1.4.8.1  wrstuden #endif
    266      1.2    itojun 
    267      1.2    itojun int	route6_input __P((struct mbuf **, int *, int));
    268      1.2    itojun 
    269      1.2    itojun void	frag6_init __P((void));
    270      1.2    itojun int	frag6_input __P((struct mbuf **, int *, int));
    271      1.2    itojun void	frag6_slowtimo __P((void));
    272      1.2    itojun void	frag6_drain __P((void));
    273      1.2    itojun 
    274      1.2    itojun void	rip6_init __P((void));
    275      1.2    itojun int	rip6_input __P((struct mbuf **mp, int *offp, int proto));
    276  1.4.8.1  wrstuden #if defined(__FreeBSD__) && __FreeBSD__ >= 3
    277  1.4.8.1  wrstuden int	rip6_ctloutput __P((struct socket *so, struct sockopt *sopt));
    278  1.4.8.1  wrstuden #else
    279      1.2    itojun int	rip6_ctloutput __P((int, struct socket *, int, int, struct mbuf **));
    280  1.4.8.1  wrstuden #endif
    281      1.2    itojun int	rip6_output __P((struct mbuf *, ...));
    282      1.2    itojun int	rip6_usrreq __P((struct socket *,
    283      1.2    itojun 	    int, struct mbuf *, struct mbuf *, struct mbuf *, struct proc *));
    284      1.2    itojun 
    285      1.2    itojun int	dest6_input __P((struct mbuf **, int *, int));
    286      1.2    itojun int	none_input __P((struct mbuf **, int *, int));
    287      1.2    itojun #endif /* _KERNEL */
    288      1.2    itojun 
    289      1.2    itojun #endif /* !_NETINET6_IP6_VAR_H_ */
    290