/* $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_ */