/* $FreeBSD: src/sys/netinet6/ip6_var.h,v 1.2.2.4 2003/01/23 21:06:47 sam 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. 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_ #ifndef _SYS_TYPES_H_ #include <sys/types.h> #endif #ifndef _SYS_QUEUE_H_ #include <sys/queue.h> #endif #ifndef _NETINET_IN_H_ #include <netinet/in.h> #endif /* * 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 int ip6q_nfrag; /* # of fragments */ }; 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 /* Nexthop related info */ struct ip6po_nhinfo { struct sockaddr *ip6po_nhi_nexthop; struct route_in6 ip6po_nhi_route; /* Route to the nexthop */ }; #define ip6po_nexthop ip6po_nhinfo.ip6po_nhi_nexthop #define ip6po_nextroute ip6po_nhinfo.ip6po_nhi_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; /* Next-hop address information */ struct ip6po_nhinfo ip6po_nhinfo; 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; /* * below fields are introduced in RFC3542 */ int ip6po_tclass; /* traffic class */ int ip6po_minmtu; /* fragment vs PMTU discovery policy */ #define IP6PO_MINMTU_MCASTONLY -1 /* default; send at min MTU for multicast*/ #define IP6PO_MINMTU_DISABLE 0 /* always perform pmtu disc */ #define IP6PO_MINMTU_ALL 1 /* always send at min MTU */ int ip6po_prefer_tempaddr; /* whether temporary addresses are preferred as source address */ #define IP6PO_TEMPADDR_SYSTEM -1 /* follow the system default */ #define IP6PO_TEMPADDR_NOTPREFER 0 /* not prefer temporary address */ #define IP6PO_TEMPADDR_PREFER 1 /* prefer temporary address */ int ip6po_flags; #if 0 /* Parameters in this block are obsolete. Do not reuse the values. */ #define IP6PO_REACHCONF 0x01 /* upper-layer reachability confirmation. */ #define IP6PO_MINMTU 0x02 /* use minimum MTU (IPV6_USE_MIN_MTU) */ #endif #define IP6PO_DONTFRAG 0x04 /* disable fragmentation (IPV6_DONTFRAG) */ #define IP6PO_USECOA 0x08 /* use care of address */ }; /* * 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 successfully 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) */ /* direction passed to ip_hashfn as last parameter */ #define IP6_MPORT_IN 0 /* Find lwkt port for incoming packets */ #define IP6_MPORT_OUT 1 /* Find lwkt port for outgoing packets */ extern struct ip6stat ip6stat; /* statistics */ extern u_int32_t ip6_id; /* fragment identifier */ extern int ip6_minhlim; /* minimum hop limit */ 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 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_maxfrags; /* Maximum fragments in reassembly queue */ extern int ip6_sourcecheck; /* Verify source interface */ extern int ip6_sourcecheck_interval; /* Interval between log messages */ extern int ip6_accept_rtadv; 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 pfil_head inet6_pfil_hook; extern struct pr_usrreqs rip6_usrreqs; struct proc; struct inpcb; struct sockopt; struct in6_ifaddr; struct ip6_hdr; union netmsg; void icmp6_ctloutput (union netmsg *); void ip6_init (void); void ip6intr (void); struct in6_ifaddr *ip6_getdstifaddr (struct mbuf *); void ip6_freepcbopts (struct ip6_pktopts *); void ip6_freemoptions (struct ip6_moptions *); int ip6_unknown_opt (u_int8_t *, struct mbuf *, int); char * ip6_get_prevhdr (struct mbuf *, int); int ip6_nexthdr (struct mbuf *, int, int, int *); int ip6_lasthdr (struct mbuf *, int, int, int *); struct ip6aux *ip6_addaux (struct mbuf *); struct ip6aux *ip6_findaux (struct mbuf *); void ip6_delaux (struct mbuf *); int ip6_mforward (struct ip6_hdr *, struct ifnet *, struct mbuf *); int ip6_process_hopopts (struct mbuf *, u_int8_t *, int, u_int32_t *, u_int32_t *); void ip6_savecontrol (struct inpcb *, struct mbuf **, struct ip6_hdr *, struct mbuf *); void ip6_notify_pmtu (struct inpcb *, struct sockaddr_in6 *, u_int32_t *); int ip6_sysctl (int *, u_int, void *, size_t *, void *, size_t); void ip6_forward (struct mbuf *, int); void ip6_mloopback (struct ifnet *, struct mbuf *, struct sockaddr_in6 *); int ip6_output (struct mbuf *, struct ip6_pktopts *, struct route_in6 *, int, struct ip6_moptions *, struct ifnet **, struct inpcb *); void ip6_ctloutput_dispatch(netmsg_t msg); int ip6_ctloutput (struct socket *, struct sockopt *); int ip6_raw_ctloutput (struct socket *, struct sockopt *); void init_ip6pktopts (struct ip6_pktopts *); int ip6_setpktoptions(struct mbuf *, struct ip6_pktopts *, struct ip6_pktopts *, int , int); void ip6_clearpktopts (struct ip6_pktopts *, int); struct ip6_pktopts *ip6_copypktopts (struct ip6_pktopts *, int); int ip6_optlen (struct inpcb *); int route6_input (struct mbuf **, int *, int); void frag6_init (void); int frag6_input (struct mbuf **, int *, int); void frag6_drain (void); void rip6_init (void); int rip6_input (struct mbuf **, int *, int); void rip6_ctlinput (union netmsg *); void rip6_ctloutput (union netmsg *); int rip6_output (struct mbuf *, struct socket *, ...); int rip6_usrreq (struct socket *, int, struct mbuf *, struct mbuf *, struct mbuf *, struct proc *); int dest6_input (struct mbuf **, int *, int); int none_input (struct mbuf **, int *, int); #endif /* _KERNEL */ #endif /* !_NETINET6_IP6_VAR_H_ */
