| /*- |
| * 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. |
| * |
| * $KAME: ip6_var.h,v 1.62 2001/05/03 14:51:48 itojun Exp $ |
| */ |
| |
| /*- |
| * 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. |
| * 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 |
| * $FreeBSD: src/sys/netinet6/ip6_var.h,v 1.55.2.1.2.1 2009/10/25 01:10:29 kensmith Exp $ |
| */ |
| |
| #ifndef _BSD_NETINET6_IP6_VAR_H_ |
| #define _BSD_NETINET6_IP6_VAR_H_ |
| |
| /* |
| * IP6 reassembly queue structure. Each fragment |
| * being reassembled is attached to one of these structures. |
| */ |
| struct ip6q { |
| struct ip6asfrag *ip6q_down; |
| struct ip6asfrag *ip6q_up; |
| u_int32_t ip6q_ident; |
| u_int8_t ip6q_nxt; |
| u_int8_t ip6q_ecn; |
| 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 label *ip6q_label; |
| }; |
| |
| struct ip6asfrag { |
| 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)) |
| |
| /* |
| * Structure attached to inpcb.in6p_moptions and |
| * passed to ip6_output when IPv6 multicast options are in use. |
| * This structure is lazy-allocated. |
| */ |
| 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 */ |
| u_short im6o_num_memberships; /* no. memberships this socket */ |
| u_short im6o_max_memberships; /* max memberships this socket */ |
| struct in6_multi **im6o_membership; /* group memberships */ |
| struct in6_mfilter *im6o_mfilters; /* source filters */ |
| }; |
| |
| /* |
| * 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; |
| |
| 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 is 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 a deprecated address is chosen */ |
| u_quad_t ip6s_sources_deprecated[16]; |
| |
| /* number of times that each rule of source selection is applied. */ |
| u_quad_t ip6s_sources_rule[16]; |
| }; |
| |
| #ifdef _FREEBSD_KERNEL |
| #define IP6STAT_ADD(name, val) V_ip6stat.name += (val) |
| #define IP6STAT_SUB(name, val) V_ip6stat.name -= (val) |
| #define IP6STAT_INC(name) IP6STAT_ADD(name, 1) |
| #define IP6STAT_DEC(name) IP6STAT_SUB(name, 1) |
| #endif |
| |
| #ifdef _FREEBSD_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 _FREEBSD_KERNEL |
| /* flags passed to ip6_output as last parameter */ |
| #define IPV6_UNSPECSRC 0x01 /* allow :: as the source address */ |
| #define IPV6_FORWARDING 0x02 /* most of IPv6 header exists */ |
| #define IPV6_MINMTU 0x04 /* use minimum MTU (IPV6_USE_MIN_MTU) */ |
| |
| #ifdef __NO_STRICT_ALIGNMENT |
| #define IP6_HDR_ALIGNED_P(ip) 1 |
| #else |
| #define IP6_HDR_ALIGNED_P(ip) ((((intptr_t) (ip)) & 3) == 0) |
| #endif |
| |
| VNET_DECLARE(struct ip6stat, ip6stat); /* statistics */ |
| VNET_DECLARE(int, ip6_defhlim); /* default hop limit */ |
| VNET_DECLARE(int, ip6_defmcasthlim); /* default multicast hop limit */ |
| VNET_DECLARE(int, ip6_forwarding); /* act as router? */ |
| VNET_DECLARE(int, ip6_gif_hlim); /* Hop limit for gif encap packet */ |
| VNET_DECLARE(int, ip6_use_deprecated); /* allow deprecated addr as source */ |
| VNET_DECLARE(int, ip6_rr_prune); /* router renumbering prefix |
| * walk list every 5 sec. */ |
| VNET_DECLARE(int, ip6_mcast_pmtu); /* enable pMTU discovery for multicast? */ |
| VNET_DECLARE(int, ip6_v6only); |
| VNET_DECLARE(struct socket *, ip6_mrouter); /* multicast routing daemon */ |
| VNET_DECLARE(int, ip6_sendredirects); /* send IP redirects when forwarding? */ |
| VNET_DECLARE(int, ip6_maxfragpackets); /* Maximum packets in reassembly |
| * queue */ |
| VNET_DECLARE(int, ip6_maxfrags); /* Maximum fragments in reassembly |
| * queue */ |
| VNET_DECLARE(int, ip6_accept_rtadv); /* Acts as a host not a router */ |
| VNET_DECLARE(int, ip6_keepfaith); /* Firewall Aided Internet Translator */ |
| VNET_DECLARE(int, ip6_log_interval); |
| VNET_DECLARE(time_t, ip6_log_time); |
| VNET_DECLARE(int, ip6_hdrnestlimit); /* upper limit of # of extension |
| * headers */ |
| VNET_DECLARE(int, ip6_dad_count); /* DupAddrDetectionTransmits */ |
| |
| VNET_DECLARE(int, ip6_auto_flowlabel); |
| VNET_DECLARE(int, ip6_auto_linklocal); |
| |
| VNET_DECLARE(int, ip6_use_tempaddr); /* Whether to use temporary addresses */ |
| VNET_DECLARE(int, ip6_prefer_tempaddr); /* Whether to prefer temporary |
| * addresses in the source address |
| * selection */ |
| |
| #ifdef IPSTEALTH |
| VNET_DECLARE(int, ip6stealth); |
| #endif |
| |
| VNET_DECLARE(int, ip6_use_defzone); /* Whether to use the default scope |
| * zone when unspecified */ |
| |
| #define V_ip6stat VNET(ip6stat) |
| #define V_ip6_defhlim VNET(ip6_defhlim) |
| #define V_ip6_defmcasthlim VNET(ip6_defmcasthlim) |
| #define V_ip6_forwarding VNET(ip6_forwarding) |
| #define V_ip6_gif_hlim VNET(ip6_gif_hlim) |
| #define V_ip6_use_deprecated VNET(ip6_use_deprecated) |
| #define V_ip6_rr_prune VNET(ip6_rr_prune) |
| #define V_ip6_mcast_pmtu VNET(ip6_mcast_pmtu) |
| #define V_ip6_v6only VNET(ip6_v6only) |
| #define V_ip6_mrouter VNET(ip6_mrouter) |
| #define V_ip6_sendredirects VNET(ip6_sendredirects) |
| #define V_ip6_maxfragpackets VNET(ip6_maxfragpackets) |
| #define V_ip6_maxfrags VNET(ip6_maxfrags) |
| #define V_ip6_accept_rtadv VNET(ip6_accept_rtadv) |
| #define V_ip6_keepfaith VNET(ip6_keepfaith) |
| #define V_ip6_log_interval VNET(ip6_log_interval) |
| #define V_ip6_log_time VNET(ip6_log_time) |
| #define V_ip6_hdrnestlimit VNET(ip6_hdrnestlimit) |
| #define V_ip6_dad_count VNET(ip6_dad_count) |
| #define V_ip6_auto_flowlabel VNET(ip6_auto_flowlabel) |
| #define V_ip6_auto_linklocal VNET(ip6_auto_linklocal) |
| #define V_ip6_use_tempaddr VNET(ip6_use_tempaddr) |
| #define V_ip6_prefer_tempaddr VNET(ip6_prefer_tempaddr) |
| #ifdef IPSTEALTH |
| #define V_ip6stealth VNET(ip6stealth) |
| #endif |
| #define V_ip6_use_defzone VNET(ip6_use_defzone) |
| |
| extern struct pfil_head inet6_pfil_hook; /* packet filter hooks */ |
| |
| 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)); |
| #ifdef VIMAGE |
| void ip6_destroy __P((void)); |
| #endif |
| void ip6_input __P((struct mbuf *)); |
| struct in6_ifaddr *ip6_getdstifaddr __P((struct mbuf *)); |
| void ip6_freepcbopts __P((struct ip6_pktopts *)); |
| |
| 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 ip6aux *ip6_addaux __P((struct mbuf *)); |
| struct ip6aux *ip6_findaux __P((struct mbuf *)); |
| void ip6_delaux __P((struct mbuf *)); |
| |
| extern int (*ip6_mforward)(struct ip6_hdr *, struct ifnet *, |
| struct mbuf *); |
| |
| int ip6_process_hopopts __P((struct mbuf *, u_int8_t *, int, u_int32_t *, |
| u_int32_t *)); |
| struct mbuf **ip6_savecontrol_v4(struct inpcb *, struct mbuf *, |
| struct mbuf **, int *); |
| void ip6_savecontrol __P((struct inpcb *, struct mbuf *, 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 **, |
| struct inpcb *)); |
| int ip6_ctloutput __P((struct socket *, struct sockopt *)); |
| int ip6_raw_ctloutput __P((struct socket *, struct sockopt *)); |
| void ip6_initpktopts __P((struct ip6_pktopts *)); |
| int ip6_setpktopts __P((struct mbuf *, struct ip6_pktopts *, |
| struct ip6_pktopts *, struct ucred *, int)); |
| void ip6_clearpktopts __P((struct ip6_pktopts *, 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 **, int *, int)); |
| void rip6_ctlinput __P((int, struct sockaddr *, void *)); |
| int rip6_ctloutput __P((struct socket *, struct sockopt *)); |
| 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)); |
| |
| int in6_selectsrc(struct sockaddr_in6 *, struct ip6_pktopts *, |
| struct inpcb *inp, struct route_in6 *, struct ucred *cred, |
| struct ifnet **, struct in6_addr *); |
| int in6_selectroute __P((struct sockaddr_in6 *, struct ip6_pktopts *, |
| struct ip6_moptions *, struct route_in6 *, struct ifnet **, |
| struct rtentry **)); |
| u_int32_t ip6_randomid __P((void)); |
| u_int32_t ip6_randomflowlabel __P((void)); |
| #endif /* _FREEBSD_KERNEL */ |
| |
| #endif /* !_BSD_NETINET6_IP6_VAR_H_ */ |
