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- /* $KAME: ip6_var.h,v 1.31 2000/04/04 08:48:26 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_
-
- /*
- * 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 {
- 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;
-
- int ip6po_flags;
- #define IP6PO_REACHCONF 0x01 /* upper-layer reachability confirmation */
- #define IP6PO_MINMTU 0x02 /* use minimum MTU (IPV6_USE_MIN_MTU) */
- };
-
- /*
- * Control options for incoming packets
- */
-
- struct ip6_recvpktopts {
- struct mbuf *head; /* mbuf chain of data passed to a user */
-
- #ifdef SO_TIMESTAMP
- struct mbuf *timestamp; /* timestamp */
- #endif
- struct mbuf *hlim; /* received hop limit */
- struct mbuf *pktinfo; /* packet information of rcv packet */
- struct mbuf *hbh; /* HbH options header of rcv packet */
- struct mbuf *dest1; /* Dest opt header of rcv packet */
- struct mbuf *dest2; /* Dest opt header (after rthdr) of rcv packet */
- struct mbuf *rthdr; /* Routing header of rcv packet */
- };
-
- 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 */
- /* XXX the following two items are not really AF_INET6 thing */
- u_quad_t ip6s_exthdrget; /* # of calls to IP6_EXTHDR_GET */
- u_quad_t ip6s_exthdrget0; /* # of calls to IP6_EXTHDR_GET0 */
- u_quad_t ip6s_pulldown; /* # of calls to m_pulldown */
- u_quad_t ip6s_pulldown_copy; /* # of mbuf copies in m_pulldown */
- u_quad_t ip6s_pulldown_alloc; /* # of mbuf allocs in m_pulldown */
- u_quad_t ip6s_pullup; /* # of calls to m_pullup */
- u_quad_t ip6s_pullup_copy; /* # of possible m_pullup copies */
- u_quad_t ip6s_pullup_alloc; /* # of possible m_pullup mallocs */
- u_quad_t ip6s_pullup_fail; /* # of possible m_pullup failures */
- u_quad_t ip6s_pullup2; /* # of calls to m_pullup2 */
- u_quad_t ip6s_pullup2_copy; /* # of possible m_pullup2 copies */
- u_quad_t ip6s_pullup2_alloc; /* # of possible m_pullup2 mallocs */
- u_quad_t ip6s_pullup2_fail; /* # of possible m_pullup2 failures */
-
- /*
- * 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];
- };
-
- #if 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. */
- #if INET6
- extern int ip6_mapped_addr_on;
- #endif
- #if defined(__NetBSD__) && !defined(INET6_BINDV6ONLY)
- extern int ip6_bindv6only;
- #endif
-
- 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;
-
- #if !defined(__APPLE__)
- //#if !defined(__FreeBSD__) || __FreeBSD__ < 3
- struct in6pcb;
- #endif
- #if defined(__FreeBSD__) && __FreeBSD__ >= 3 || defined (__APPLE__)
- extern struct pr_usrreqs rip6_usrreqs;
-
- struct inpcb;
- struct sockopt;
- #endif
-
- #if (defined(__FreeBSD__) && __FreeBSD__ >= 3) || defined (__APPLE__)
- int icmp6_ctloutput __P((struct socket *, struct sockopt *sopt));
- #else
- int icmp6_ctloutput __P((int, struct socket *, int, int, struct mbuf **));
- #endif
-
- void ip6_init __P((void));
- void ip6intr __P((void));
- void ip6_input __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 *));
- 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 *));
- #if defined(__FreeBSD__) && __FreeBSD__ >= 3 || defined (__APPLE__)
- void ip6_savecontrol __P((struct inpcb *, struct ip6_hdr *, struct mbuf *,
- struct ip6_recvpktopts *,
- struct ip6_recvpktopts **));
- #else
- void ip6_savecontrol __P((struct in6pcb *, struct ip6_hdr *, struct mbuf *,
- struct ip6_recvpktopts *,
- struct ip6_recvpktopts **));
- #endif
- void ip6_update_recvpcbopt __P((struct ip6_recvpktopts *,
- struct ip6_recvpktopts *));
- void ip6_reset_rcvopt __P((struct ip6_recvpktopts *, int));
- 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 **));
- #if defined(__FreeBSD__) && __FreeBSD__ >= 3 || defined (__APPLE__)
- int ip6_ctloutput __P((struct socket *, struct sockopt *sopt));
- #else
- int ip6_ctloutput __P((int, struct socket *, int, int, struct mbuf **));
- #endif
- 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));
- #if defined(__FreeBSD__) && __FreeBSD__ >= 3 || defined (__APPLE__)
- int ip6_optlen __P((struct inpcb *));
- #else
- int ip6_optlen __P((struct in6pcb *));
- #endif
-
- 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 *));
- #if defined(__FreeBSD__) && __FreeBSD__ >= 3 || defined (__APPLE__)
- int rip6_ctloutput __P((struct socket *so, struct sockopt *sopt));
- #else
- int rip6_ctloutput __P((int, struct socket *, int, int, struct mbuf **));
- #endif
- 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 /* !_NETINET6_IP6_VAR_H_ */
-