--- /dev/null
+/*!\file netinet6/ip6_var.h
+ *
+ */
+
+/* $FreeBSD: src/sys/netinet6/ip6_var.h,v 1.9 2002/07/25 17:40:45 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/queue.h>
+
+#if !defined(__BORLANDC__) /* stop warnings for undefined structs */
+/*
+ * 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 */
+#ifdef 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(dummy, in6_multi_mship) im6o_memberships;
+};
+#endif /* __BORLANDC__ */
+
+#ifndef _NETINET6_IN6_H_
+struct route_in6 {
+ struct rtentry *ro_rt;
+ struct sockaddr_in6 ro_dst;
+};
+#endif
+
+/*
+ * Control options for outgoing packets
+ */
+
+/* Routing header related info */
+#if !defined(__BORLANDC__)
+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;
+};
+#endif /* __BORLANDC__ */
+
+/*
+ * 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. */
+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 *offp, int proto));
+void rip6_ctlinput __P((int, struct sockaddr *, void *));
+int rip6_ctloutput __P((struct socket *so, struct sockopt *sopt));
+int rip6_output __P((struct mbuf *, ...));
+int rip6_usrreq __P((struct socket *,
+ int, struct mbuf *, struct mbuf *, struct mbuf *, struct thread *));
+
+int dest6_input __P((struct mbuf **, int *, int));
+int none_input __P((struct mbuf **, int *, int));
+#endif /* _KERNEL */
+
+#endif /* !_NETINET6_IP6_VAR_H_ */
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