ip6_var.h revision 1.18.8.1
1 /* $NetBSD: ip6_var.h,v 1.18.8.1 2002/05/30 13:52:34 gehenna Exp $ */ 2 /* $KAME: ip6_var.h,v 1.33 2000/06/11 14:59:20 jinmei Exp $ */ 3 4 /* 5 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the project nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 /* 34 * Copyright (c) 1982, 1986, 1993 35 * The Regents of the University of California. All rights reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in the 44 * documentation and/or other materials provided with the distribution. 45 * 3. All advertising materials mentioning features or use of this software 46 * must display the following acknowledgement: 47 * This product includes software developed by the University of 48 * California, Berkeley and its contributors. 49 * 4. Neither the name of the University nor the names of its contributors 50 * may be used to endorse or promote products derived from this software 51 * without specific prior written permission. 52 * 53 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 54 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 55 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 56 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 57 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 58 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 59 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 61 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 63 * SUCH DAMAGE. 64 * 65 * @(#)ip_var.h 8.1 (Berkeley) 6/10/93 66 */ 67 68 #ifndef _NETINET6_IP6_VAR_H_ 69 #define _NETINET6_IP6_VAR_H_ 70 71 /* 72 * IP6 reassembly queue structure. Each fragment 73 * being reassembled is attached to one of these structures. 74 */ 75 struct ip6q { 76 u_int32_t ip6q_head; 77 u_int16_t ip6q_len; 78 u_int8_t ip6q_nxt; /* ip6f_nxt in first fragment */ 79 u_int8_t ip6q_hlim; 80 struct ip6asfrag *ip6q_down; 81 struct ip6asfrag *ip6q_up; 82 u_int32_t ip6q_ident; 83 u_int8_t ip6q_arrive; 84 u_int8_t ip6q_ttl; 85 struct in6_addr ip6q_src, ip6q_dst; 86 struct ip6q *ip6q_next; 87 struct ip6q *ip6q_prev; 88 int ip6q_unfrglen; /* len of unfragmentable part */ 89 #ifdef notyet 90 u_char *ip6q_nxtp; 91 #endif 92 int ip6q_nfrag; /* # of fragments */ 93 }; 94 95 struct ip6asfrag { 96 u_int32_t ip6af_head; 97 u_int16_t ip6af_len; 98 u_int8_t ip6af_nxt; 99 u_int8_t ip6af_hlim; 100 /* must not override the above members during reassembling */ 101 struct ip6asfrag *ip6af_down; 102 struct ip6asfrag *ip6af_up; 103 struct mbuf *ip6af_m; 104 int ip6af_offset; /* offset in ip6af_m to next header */ 105 int ip6af_frglen; /* fragmentable part length */ 106 int ip6af_off; /* fragment offset */ 107 u_int16_t ip6af_mff; /* more fragment bit in frag off */ 108 }; 109 110 #define IP6_REASS_MBUF(ip6af) (*(struct mbuf **)&((ip6af)->ip6af_m)) 111 112 struct ip6_moptions { 113 struct ifnet *im6o_multicast_ifp; /* ifp for outgoing multicasts */ 114 u_char im6o_multicast_hlim; /* hoplimit for outgoing multicasts */ 115 u_char im6o_multicast_loop; /* 1 >= hear sends if a member */ 116 LIST_HEAD(, in6_multi_mship) im6o_memberships; 117 }; 118 119 /* 120 * Control options for outgoing packets 121 */ 122 123 /* Routing header related info */ 124 struct ip6po_rhinfo { 125 struct ip6_rthdr *ip6po_rhi_rthdr; /* Routing header */ 126 struct route_in6 ip6po_rhi_route; /* Route to the 1st hop */ 127 }; 128 #define ip6po_rthdr ip6po_rhinfo.ip6po_rhi_rthdr 129 #define ip6po_route ip6po_rhinfo.ip6po_rhi_route 130 131 struct ip6_pktopts { 132 struct mbuf *ip6po_m; /* Pointer to mbuf storing the data */ 133 int ip6po_hlim; /* Hoplimit for outgoing packets */ 134 struct in6_pktinfo *ip6po_pktinfo; /* Outgoing IF/address information */ 135 struct sockaddr *ip6po_nexthop; /* Next-hop address */ 136 struct ip6_hbh *ip6po_hbh; /* Hop-by-Hop options header */ 137 struct ip6_dest *ip6po_dest1; /* Destination options header(1st part) */ 138 struct ip6po_rhinfo ip6po_rhinfo; /* Routing header related info. */ 139 struct ip6_dest *ip6po_dest2; /* Destination options header(2nd part) */ 140 }; 141 142 struct ip6stat { 143 u_quad_t ip6s_total; /* total packets received */ 144 u_quad_t ip6s_tooshort; /* packet too short */ 145 u_quad_t ip6s_toosmall; /* not enough data */ 146 u_quad_t ip6s_fragments; /* fragments received */ 147 u_quad_t ip6s_fragdropped; /* frags dropped(dups, out of space) */ 148 u_quad_t ip6s_fragtimeout; /* fragments timed out */ 149 u_quad_t ip6s_fragoverflow; /* fragments that exceeded limit */ 150 u_quad_t ip6s_forward; /* packets forwarded */ 151 u_quad_t ip6s_cantforward; /* packets rcvd for unreachable dest */ 152 u_quad_t ip6s_redirectsent; /* packets forwarded on same net */ 153 u_quad_t ip6s_delivered; /* datagrams delivered to upper level*/ 154 u_quad_t ip6s_localout; /* total ip packets generated here */ 155 u_quad_t ip6s_odropped; /* lost packets due to nobufs, etc. */ 156 u_quad_t ip6s_reassembled; /* total packets reassembled ok */ 157 u_quad_t ip6s_fragmented; /* datagrams sucessfully fragmented */ 158 u_quad_t ip6s_ofragments; /* output fragments created */ 159 u_quad_t ip6s_cantfrag; /* don't fragment flag was set, etc. */ 160 u_quad_t ip6s_badoptions; /* error in option processing */ 161 u_quad_t ip6s_noroute; /* packets discarded due to no route */ 162 u_quad_t ip6s_badvers; /* ip6 version != 6 */ 163 u_quad_t ip6s_rawout; /* total raw ip packets generated */ 164 u_quad_t ip6s_badscope; /* scope error */ 165 u_quad_t ip6s_notmember; /* don't join this multicast group */ 166 u_quad_t ip6s_nxthist[256]; /* next header history */ 167 u_quad_t ip6s_m1; /* one mbuf */ 168 u_quad_t ip6s_m2m[32]; /* two or more mbuf */ 169 u_quad_t ip6s_mext1; /* one ext mbuf */ 170 u_quad_t ip6s_mext2m; /* two or more ext mbuf */ 171 u_quad_t ip6s_exthdrtoolong; /* ext hdr are not continuous */ 172 u_quad_t ip6s_nogif; /* no match gif found */ 173 u_quad_t ip6s_toomanyhdr; /* discarded due to too many headers */ 174 175 /* 176 * statistics for improvement of the source address selection 177 * algorithm: 178 * XXX: hardcoded 16 = # of ip6 multicast scope types + 1 179 */ 180 /* number of times that address selection fails */ 181 u_quad_t ip6s_sources_none; 182 /* number of times that an address on the outgoing I/F is chosen */ 183 u_quad_t ip6s_sources_sameif[16]; 184 /* number of times that an address on a non-outgoing I/F is chosen */ 185 u_quad_t ip6s_sources_otherif[16]; 186 /* 187 * number of times that an address that has the same scope 188 * from the destination is chosen. 189 */ 190 u_quad_t ip6s_sources_samescope[16]; 191 /* 192 * number of times that an address that has a different scope 193 * from the destination is chosen. 194 */ 195 u_quad_t ip6s_sources_otherscope[16]; 196 /* number of times that an deprecated address is chosen */ 197 u_quad_t ip6s_sources_deprecated[16]; 198 199 u_quad_t ip6s_forward_cachehit; 200 u_quad_t ip6s_forward_cachemiss; 201 }; 202 203 #ifdef _KERNEL 204 /* flags passed to ip6_output as last parameter */ 205 #define IPV6_DADOUTPUT 0x01 /* DAD */ 206 #define IPV6_FORWARDING 0x02 /* most of IPv6 header exists */ 207 #define IPV6_MINMTU 0x04 /* use minimum MTU (IPV6_USE_MIN_MTU) */ 208 209 extern struct ip6stat ip6stat; /* statistics */ 210 extern u_int32_t ip6_id; /* fragment identifier */ 211 extern int ip6_defhlim; /* default hop limit */ 212 extern int ip6_defmcasthlim; /* default multicast hop limit */ 213 extern int ip6_forwarding; /* act as router? */ 214 extern int ip6_forward_srcrt; /* forward src-routed? */ 215 extern int ip6_use_deprecated; /* allow deprecated addr as source */ 216 extern int ip6_rr_prune; /* router renumbering prefix 217 * walk list every 5 sec. */ 218 extern int ip6_v6only; 219 220 extern struct socket *ip6_mrouter; /* multicast routing daemon */ 221 extern int ip6_sendredirects; /* send IP redirects when forwarding? */ 222 extern int ip6_maxfragpackets; /* Maximum packets in reassembly queue */ 223 extern int ip6_maxfrags; /* Maximum fragments in reassembly queue */ 224 extern int ip6_sourcecheck; /* Verify source interface */ 225 extern int ip6_sourcecheck_interval; /* Interval between log messages */ 226 extern int ip6_accept_rtadv; /* Acts as a host not a router */ 227 extern int ip6_keepfaith; /* Firewall Aided Internet Translator */ 228 extern int ip6_log_interval; 229 extern time_t ip6_log_time; 230 extern int ip6_hdrnestlimit; /* upper limit of # of extension headers */ 231 extern int ip6_dad_count; /* DupAddrDetectionTransmits */ 232 233 extern u_int32_t ip6_flow_seq; 234 extern int ip6_auto_flowlabel; 235 236 extern int ip6_anonportmin; /* minimum ephemeral port */ 237 extern int ip6_anonportmax; /* maximum ephemeral port */ 238 extern int ip6_lowportmin; /* minimum reserved port */ 239 extern int ip6_lowportmax; /* maximum reserved port */ 240 241 struct in6pcb; 242 243 int icmp6_ctloutput __P((int, struct socket *, int, int, struct mbuf **)); 244 245 void ip6_init __P((void)); 246 void ip6intr __P((void)); 247 void ip6_input __P((struct mbuf *)); 248 void ip6_freemoptions __P((struct ip6_moptions *)); 249 int ip6_unknown_opt __P((u_int8_t *, struct mbuf *, int)); 250 char * ip6_get_prevhdr __P((struct mbuf *, int)); 251 int ip6_nexthdr __P((struct mbuf *, int, int, int *)); 252 int ip6_lasthdr __P((struct mbuf *, int, int, int *)); 253 int ip6_mforward __P((struct ip6_hdr *, struct ifnet *, struct mbuf *)); 254 int ip6_process_hopopts __P((struct mbuf *, u_int8_t *, int, u_int32_t *, 255 u_int32_t *)); 256 void ip6_savecontrol __P((struct in6pcb *, struct mbuf **, struct ip6_hdr *, 257 struct mbuf *)); 258 int ip6_sysctl __P((int *, u_int, void *, size_t *, void *, size_t)); 259 260 void ip6_forward __P((struct mbuf *, int)); 261 262 void ip6_mloopback __P((struct ifnet *, struct mbuf *, struct sockaddr_in6 *)); 263 int ip6_output __P((struct mbuf *, struct ip6_pktopts *, 264 struct route_in6 *, int, 265 struct ip6_moptions *, struct ifnet **)); 266 int ip6_ctloutput __P((int, struct socket *, int, int, struct mbuf **)); 267 int ip6_setpktoptions __P((struct mbuf *, struct ip6_pktopts *, int)); 268 int ip6_optlen __P((struct in6pcb *)); 269 270 int route6_input __P((struct mbuf **, int *, int)); 271 272 void frag6_init __P((void)); 273 int frag6_input __P((struct mbuf **, int *, int)); 274 void frag6_slowtimo __P((void)); 275 void frag6_drain __P((void)); 276 277 void rip6_init __P((void)); 278 int rip6_input __P((struct mbuf **mp, int *offp, int proto)); 279 void rip6_ctlinput __P((int, struct sockaddr *, void *)); 280 int rip6_ctloutput __P((int, struct socket *, int, int, struct mbuf **)); 281 int rip6_output __P((struct mbuf *, ...)); 282 int rip6_usrreq __P((struct socket *, 283 int, struct mbuf *, struct mbuf *, struct mbuf *, struct proc *)); 284 285 int dest6_input __P((struct mbuf **, int *, int)); 286 int none_input __P((struct mbuf **, int *, int)); 287 #endif /* _KERNEL */ 288 289 #endif /* !_NETINET6_IP6_VAR_H_ */ 290
Indexes created Fri Oct 17 23:09:53 GMT 2025