ip6_var.h revision 62587
1208625Sjkim/* $FreeBSD: head/sys/netinet6/ip6_var.h 62587 2000-07-04 16:35:15Z itojun $ */ 2208625Sjkim/* $KAME: ip6_var.h,v 1.33 2000/06/11 14:59:20 jinmei Exp $ */ 3208625Sjkim 4208625Sjkim/* 5208625Sjkim * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 6208625Sjkim * All rights reserved. 7208625Sjkim * 8208625Sjkim * Redistribution and use in source and binary forms, with or without 9208625Sjkim * modification, are permitted provided that the following conditions 10208625Sjkim * are met: 11208625Sjkim * 1. Redistributions of source code must retain the above copyright 12208625Sjkim * notice, this list of conditions and the following disclaimer. 13208625Sjkim * 2. Redistributions in binary form must reproduce the above copyright 14208625Sjkim * notice, this list of conditions and the following disclaimer in the 15208625Sjkim * documentation and/or other materials provided with the distribution. 16208625Sjkim * 3. Neither the name of the project nor the names of its contributors 17208625Sjkim * may be used to endorse or promote products derived from this software 18208625Sjkim * without specific prior written permission. 19208625Sjkim * 20208625Sjkim * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 21208625Sjkim * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22208625Sjkim * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23208625Sjkim * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 24208625Sjkim * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25208625Sjkim * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26208625Sjkim * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27208625Sjkim * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28208625Sjkim * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29208625Sjkim * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30208625Sjkim * SUCH DAMAGE. 31208625Sjkim */ 32208625Sjkim 33208625Sjkim/* 34208625Sjkim * Copyright (c) 1982, 1986, 1993 35208625Sjkim * The Regents of the University of California. All rights reserved. 36208625Sjkim * 37208625Sjkim * Redistribution and use in source and binary forms, with or without 38208625Sjkim * modification, are permitted provided that the following conditions 39208625Sjkim * are met: 40208625Sjkim * 1. Redistributions of source code must retain the above copyright 41208625Sjkim * notice, this list of conditions and the following disclaimer. 42208625Sjkim * 2. Redistributions in binary form must reproduce the above copyright 43208625Sjkim * notice, this list of conditions and the following disclaimer in the 44208625Sjkim * documentation and/or other materials provided with the distribution. 45208625Sjkim * 3. All advertising materials mentioning features or use of this software 46208625Sjkim * must display the following acknowledgement: 47208625Sjkim * This product includes software developed by the University of 48208625Sjkim * California, Berkeley and its contributors. 49208625Sjkim * 4. Neither the name of the University nor the names of its contributors 50208625Sjkim * may be used to endorse or promote products derived from this software 51208625Sjkim * without specific prior written permission. 52208625Sjkim * 53208625Sjkim * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 54208625Sjkim * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 55208625Sjkim * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 56208625Sjkim * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 57208625Sjkim * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 58208625Sjkim * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 59208625Sjkim * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 60208625Sjkim * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 61208625Sjkim * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 62208625Sjkim * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 63208625Sjkim * SUCH DAMAGE. 64208625Sjkim * 65208625Sjkim * @(#)ip_var.h 8.1 (Berkeley) 6/10/93 66208625Sjkim */ 67208625Sjkim 68208625Sjkim#ifndef _NETINET6_IP6_VAR_H_ 69208625Sjkim#define _NETINET6_IP6_VAR_H_ 70208625Sjkim 71208625Sjkim/* 72208625Sjkim * IP6 reassembly queue structure. Each fragment 73208625Sjkim * being reassembled is attached to one of these structures. 74208625Sjkim */ 75208625Sjkimstruct ip6q { 76208625Sjkim u_int32_t ip6q_head; 77208625Sjkim u_int16_t ip6q_len; 78208625Sjkim u_int8_t ip6q_nxt; /* ip6f_nxt in first fragment */ 79208625Sjkim u_int8_t ip6q_hlim; 80208625Sjkim struct ip6asfrag *ip6q_down; 81208625Sjkim struct ip6asfrag *ip6q_up; 82208625Sjkim u_int32_t ip6q_ident; 83208625Sjkim u_int8_t ip6q_arrive; 84208625Sjkim u_int8_t ip6q_ttl; 85208625Sjkim struct in6_addr ip6q_src, ip6q_dst; 86208625Sjkim struct ip6q *ip6q_next; 87208625Sjkim struct ip6q *ip6q_prev; 88208625Sjkim int ip6q_unfrglen; /* len of unfragmentable part */ 89208625Sjkim#ifdef notyet 90208625Sjkim u_char *ip6q_nxtp; 91208625Sjkim#endif 92208625Sjkim}; 93208625Sjkim 94208625Sjkimstruct ip6asfrag { 95208625Sjkim u_int32_t ip6af_head; 96208625Sjkim u_int16_t ip6af_len; 97208625Sjkim u_int8_t ip6af_nxt; 98208625Sjkim u_int8_t ip6af_hlim; 99208625Sjkim /* must not override the above members during reassembling */ 100208625Sjkim struct ip6asfrag *ip6af_down; 101208625Sjkim struct ip6asfrag *ip6af_up; 102208625Sjkim struct mbuf *ip6af_m; 103208625Sjkim int ip6af_offset; /* offset in ip6af_m to next header */ 104208625Sjkim int ip6af_frglen; /* fragmentable part length */ 105208625Sjkim int ip6af_off; /* fragment offset */ 106208625Sjkim u_int16_t ip6af_mff; /* more fragment bit in frag off */ 107208625Sjkim}; 108208625Sjkim 109208625Sjkim#define IP6_REASS_MBUF(ip6af) (*(struct mbuf **)&((ip6af)->ip6af_m)) 110208625Sjkim 111208625Sjkimstruct ip6_moptions { 112208625Sjkim struct ifnet *im6o_multicast_ifp; /* ifp for outgoing multicasts */ 113208625Sjkim u_char im6o_multicast_hlim; /* hoplimit for outgoing multicasts */ 114208625Sjkim u_char im6o_multicast_loop; /* 1 >= hear sends if a member */ 115208625Sjkim LIST_HEAD(, in6_multi_mship) im6o_memberships; 116208625Sjkim}; 117208625Sjkim 118208625Sjkim/* 119209746Sjkim * Control options for outgoing packets 120209746Sjkim */ 121208625Sjkim 122208625Sjkim/* Routing header related info */ 123208625Sjkimstruct ip6po_rhinfo { 124208625Sjkim struct ip6_rthdr *ip6po_rhi_rthdr; /* Routing header */ 125208625Sjkim struct route_in6 ip6po_rhi_route; /* Route to the 1st hop */ 126208625Sjkim}; 127208625Sjkim#define ip6po_rthdr ip6po_rhinfo.ip6po_rhi_rthdr 128208625Sjkim#define ip6po_route ip6po_rhinfo.ip6po_rhi_route 129208625Sjkim 130208625Sjkimstruct ip6_pktopts { 131208625Sjkim struct mbuf *ip6po_m; /* Pointer to mbuf storing the data */ 132208625Sjkim int ip6po_hlim; /* Hoplimit for outgoing packets */ 133208625Sjkim struct in6_pktinfo *ip6po_pktinfo; /* Outgoing IF/address information */ 134208625Sjkim struct sockaddr *ip6po_nexthop; /* Next-hop address */ 135208625Sjkim struct ip6_hbh *ip6po_hbh; /* Hop-by-Hop options header */ 136208625Sjkim struct ip6_dest *ip6po_dest1; /* Destination options header(1st part) */ 137208625Sjkim struct ip6po_rhinfo ip6po_rhinfo; /* Routing header related info. */ 138208625Sjkim struct ip6_dest *ip6po_dest2; /* Destination options header(2nd part) */ 139208625Sjkim}; 140208625Sjkim 141208625Sjkimstruct ip6stat { 142208625Sjkim u_quad_t ip6s_total; /* total packets received */ 143208625Sjkim u_quad_t ip6s_tooshort; /* packet too short */ 144208625Sjkim u_quad_t ip6s_toosmall; /* not enough data */ 145208625Sjkim u_quad_t ip6s_fragments; /* fragments received */ 146208625Sjkim u_quad_t ip6s_fragdropped; /* frags dropped(dups, out of space) */ 147208625Sjkim u_quad_t ip6s_fragtimeout; /* fragments timed out */ 148208625Sjkim u_quad_t ip6s_fragoverflow; /* fragments that exceeded limit */ 149208625Sjkim u_quad_t ip6s_forward; /* packets forwarded */ 150208625Sjkim u_quad_t ip6s_cantforward; /* packets rcvd for unreachable dest */ 151208625Sjkim u_quad_t ip6s_redirectsent; /* packets forwarded on same net */ 152208625Sjkim u_quad_t ip6s_delivered; /* datagrams delivered to upper level*/ 153208625Sjkim u_quad_t ip6s_localout; /* total ip packets generated here */ 154208625Sjkim u_quad_t ip6s_odropped; /* lost packets due to nobufs, etc. */ 155208625Sjkim u_quad_t ip6s_reassembled; /* total packets reassembled ok */ 156208625Sjkim u_quad_t ip6s_fragmented; /* datagrams sucessfully fragmented */ 157208625Sjkim u_quad_t ip6s_ofragments; /* output fragments created */ 158208625Sjkim u_quad_t ip6s_cantfrag; /* don't fragment flag was set, etc. */ 159208625Sjkim u_quad_t ip6s_badoptions; /* error in option processing */ 160208625Sjkim u_quad_t ip6s_noroute; /* packets discarded due to no route */ 161208625Sjkim u_quad_t ip6s_badvers; /* ip6 version != 6 */ 162208625Sjkim u_quad_t ip6s_rawout; /* total raw ip packets generated */ 163208625Sjkim u_quad_t ip6s_badscope; /* scope error */ 164208625Sjkim u_quad_t ip6s_notmember; /* don't join this multicast group */ 165208625Sjkim u_quad_t ip6s_nxthist[256]; /* next header history */ 166208625Sjkim u_quad_t ip6s_m1; /* one mbuf */ 167208625Sjkim u_quad_t ip6s_m2m[32]; /* two or more mbuf */ 168208625Sjkim u_quad_t ip6s_mext1; /* one ext mbuf */ 169208625Sjkim u_quad_t ip6s_mext2m; /* two or more ext mbuf */ 170208625Sjkim u_quad_t ip6s_exthdrtoolong; /* ext hdr are not continuous */ 171208625Sjkim u_quad_t ip6s_nogif; /* no match gif found */ 172208625Sjkim u_quad_t ip6s_toomanyhdr; /* discarded due to too many headers */ 173208625Sjkim /* XXX the following two items are not really AF_INET6 thing */ 174208625Sjkim u_quad_t ip6s_exthdrget; /* # of calls to IP6_EXTHDR_GET */ 175208625Sjkim u_quad_t ip6s_exthdrget0; /* # of calls to IP6_EXTHDR_GET0 */ 176208625Sjkim u_quad_t ip6s_pulldown; /* # of calls to m_pulldown */ 177208625Sjkim u_quad_t ip6s_pulldown_copy; /* # of mbuf copies in m_pulldown */ 178208625Sjkim u_quad_t ip6s_pulldown_alloc; /* # of mbuf allocs in m_pulldown */ 179208625Sjkim u_quad_t ip6s_pullup; /* # of calls to m_pullup */ 180208625Sjkim u_quad_t ip6s_pullup_copy; /* # of possible m_pullup copies */ 181208625Sjkim u_quad_t ip6s_pullup_alloc; /* # of possible m_pullup mallocs */ 182208625Sjkim u_quad_t ip6s_pullup_fail; /* # of possible m_pullup failures */ 183208625Sjkim u_quad_t ip6s_pullup2; /* # of calls to m_pullup2 */ 184208625Sjkim u_quad_t ip6s_pullup2_copy; /* # of possible m_pullup2 copies */ 185208625Sjkim u_quad_t ip6s_pullup2_alloc; /* # of possible m_pullup2 mallocs */ 186209734Sjkim u_quad_t ip6s_pullup2_fail; /* # of possible m_pullup2 failures */ 187209734Sjkim 188209734Sjkim /* 189209734Sjkim * statistics for improvement of the source address selection 190208625Sjkim * algorithm: 191208625Sjkim * XXX: hardcoded 16 = # of ip6 multicast scope types + 1 192208625Sjkim */ 193208625Sjkim /* number of times that address selection fails */ 194208625Sjkim u_quad_t ip6s_sources_none; 195208625Sjkim /* number of times that an address on the outgoing I/F is chosen */ 196208625Sjkim u_quad_t ip6s_sources_sameif[16]; 197208625Sjkim /* number of times that an address on a non-outgoing I/F is chosen */ 198208625Sjkim u_quad_t ip6s_sources_otherif[16]; 199208625Sjkim /* 200208625Sjkim * number of times that an address that has the same scope 201208625Sjkim * from the destination is chosen. 202208625Sjkim */ 203208625Sjkim u_quad_t ip6s_sources_samescope[16]; 204208625Sjkim /* 205208625Sjkim * number of times that an address that has a different scope 206208625Sjkim * from the destination is chosen. 207208625Sjkim */ 208209734Sjkim u_quad_t ip6s_sources_otherscope[16]; 209208625Sjkim /* number of times that an deprecated address is chosen */ 210208625Sjkim u_quad_t ip6s_sources_deprecated[16]; 211208625Sjkim 212208625Sjkim u_quad_t ip6s_forward_cachehit; 213208625Sjkim u_quad_t ip6s_forward_cachemiss; 214208625Sjkim}; 215208625Sjkim 216208625Sjkim#ifdef _KERNEL 217208625Sjkim/* flags passed to ip6_output as last parameter */ 218208625Sjkim#define IPV6_DADOUTPUT 0x01 /* DAD */ 219208625Sjkim#define IPV6_FORWARDING 0x02 /* most of IPv6 header exists */ 220208625Sjkim#define IPV6_MINMTU 0x04 /* use minimum MTU (IPV6_USE_MIN_MTU) */ 221208625Sjkim 222208625Sjkimextern struct ip6stat ip6stat; /* statistics */ 223208625Sjkimextern u_int32_t ip6_id; /* fragment identifier */ 224208625Sjkimextern int ip6_defhlim; /* default hop limit */ 225208625Sjkimextern int ip6_defmcasthlim; /* default multicast hop limit */ 226208625Sjkimextern int ip6_forwarding; /* act as router? */ 227208625Sjkimextern int ip6_forward_srcrt; /* forward src-routed? */ 228208625Sjkimextern int ip6_gif_hlim; /* Hop limit for gif encap packet */ 229208625Sjkimextern int ip6_use_deprecated; /* allow deprecated addr as source */ 230208625Sjkimextern int ip6_rr_prune; /* router renumbering prefix 231208625Sjkim * walk list every 5 sec. */ 232208625Sjkimextern int ip6_mapped_addr_on; 233208625Sjkim 234208625Sjkimextern struct socket *ip6_mrouter; /* multicast routing daemon */ 235208625Sjkimextern int ip6_sendredirects; /* send IP redirects when forwarding? */ 236208625Sjkimextern int ip6_maxfragpackets; /* Maximum packets in reassembly queue */ 237208625Sjkimextern int ip6_sourcecheck; /* Verify source interface */ 238208625Sjkimextern int ip6_sourcecheck_interval; /* Interval between log messages */ 239208625Sjkimextern int ip6_accept_rtadv; /* Acts as a host not a router */ 240208625Sjkimextern int ip6_keepfaith; /* Firewall Aided Internet Translator */ 241208625Sjkimextern int ip6_log_interval; 242208625Sjkimextern time_t ip6_log_time; 243208625Sjkimextern int ip6_hdrnestlimit; /* upper limit of # of extension headers */ 244208625Sjkimextern int ip6_dad_count; /* DupAddrDetectionTransmits */ 245208625Sjkim 246208625Sjkimextern u_int32_t ip6_flow_seq; 247208625Sjkimextern int ip6_auto_flowlabel; 248208625Sjkim 249208625Sjkimextern struct pr_usrreqs rip6_usrreqs; 250208625Sjkimstruct sockopt; 251209734Sjkim 252209734Sjkimstruct inpcb; 253209734Sjkim 254208625Sjkimint icmp6_ctloutput __P((struct socket *, struct sockopt *sopt)); 255208625Sjkim 256208625Sjkimvoid ip6_init __P((void)); 257208625Sjkimvoid ip6intr __P((void)); 258208625Sjkimvoid ip6_input __P((struct mbuf *)); 259208625Sjkimvoid ip6_freemoptions __P((struct ip6_moptions *)); 260208625Sjkimint ip6_unknown_opt __P((u_int8_t *, struct mbuf *, int)); 261208625Sjkimchar * ip6_get_prevhdr __P((struct mbuf *, int)); 262208625Sjkimint ip6_nexthdr __P((struct mbuf *, int, int, int *)); 263208625Sjkimint ip6_lasthdr __P((struct mbuf *, int, int, int *)); 264208625Sjkimint ip6_mforward __P((struct ip6_hdr *, struct ifnet *, struct mbuf *)); 265208625Sjkimint ip6_process_hopopts __P((struct mbuf *, u_int8_t *, int, u_int32_t *, 266208625Sjkim u_int32_t *)); 267208625Sjkimvoid ip6_savecontrol __P((struct inpcb *, struct mbuf **, struct ip6_hdr *, 268208625Sjkim struct mbuf *)); 269208625Sjkimint ip6_sysctl __P((int *, u_int, void *, size_t *, void *, size_t)); 270208625Sjkim 271208625Sjkimvoid ip6_forward __P((struct mbuf *, int)); 272208625Sjkim 273208625Sjkimvoid ip6_mloopback __P((struct ifnet *, struct mbuf *, struct sockaddr_in6 *)); 274208625Sjkimint ip6_output __P((struct mbuf *, struct ip6_pktopts *, 275208625Sjkim struct route_in6 *, int, 276208625Sjkim struct ip6_moptions *, struct ifnet **)); 277208625Sjkimint ip6_ctloutput __P((struct socket *, struct sockopt *sopt)); 278208625Sjkimint ip6_setpktoptions __P((struct mbuf *, struct ip6_pktopts *, int)); 279208625Sjkimvoid ip6_clearpktopts __P((struct ip6_pktopts *, int, int)); 280208625Sjkimstruct ip6_pktopts *ip6_copypktopts __P((struct ip6_pktopts *, int)); 281208625Sjkimint ip6_optlen __P((struct inpcb *)); 282208625Sjkim 283208625Sjkimint route6_input __P((struct mbuf **, int *, int)); 284208625Sjkim 285208625Sjkimvoid frag6_init __P((void)); 286208625Sjkimint frag6_input __P((struct mbuf **, int *, int)); 287208625Sjkimvoid frag6_slowtimo __P((void)); 288208625Sjkimvoid frag6_drain __P((void)); 289208625Sjkim 290208625Sjkimvoid rip6_init __P((void)); 291208625Sjkimint rip6_input __P((struct mbuf **mp, int *offp, int proto)); 292208625Sjkimvoid rip6_ctlinput __P((int, struct sockaddr *, void *)); 293208625Sjkimint rip6_ctloutput __P((struct socket *so, struct sockopt *sopt)); 294208625Sjkimint rip6_output __P((struct mbuf *, ...)); 295208625Sjkimint rip6_usrreq __P((struct socket *, 296208625Sjkim int, struct mbuf *, struct mbuf *, struct mbuf *, struct proc *)); 297208625Sjkim 298208625Sjkimint dest6_input __P((struct mbuf **, int *, int)); 299208625Sjkimint none_input __P((struct mbuf **, int *, int)); 300208625Sjkim#endif /* _KERNEL */ 301208625Sjkim 302208625Sjkim#endif /* !_NETINET6_IP6_VAR_H_ */ 303208625Sjkim