ip6_var.h revision 1.15.2.2
1 /* $NetBSD: ip6_var.h,v 1.15.2.2 2002/01/08 00:34:22 nathanw 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 }; 93 94 struct ip6asfrag { 95 u_int32_t ip6af_head; 96 u_int16_t ip6af_len; 97 u_int8_t ip6af_nxt; 98 u_int8_t ip6af_hlim; 99 /* must not override the above members during reassembling */ 100 struct ip6asfrag *ip6af_down; 101 struct ip6asfrag *ip6af_up; 102 struct mbuf *ip6af_m; 103 int ip6af_offset; /* offset in ip6af_m to next header */ 104 int ip6af_frglen; /* fragmentable part length */ 105 int ip6af_off; /* fragment offset */ 106 u_int16_t ip6af_mff; /* more fragment bit in frag off */ 107 }; 108 109 #define IP6_REASS_MBUF(ip6af) (*(struct mbuf **)&((ip6af)->ip6af_m)) 110 111 struct ip6_moptions { 112 struct ifnet *im6o_multicast_ifp; /* ifp for outgoing multicasts */ 113 u_char im6o_multicast_hlim; /* hoplimit for outgoing multicasts */ 114 u_char im6o_multicast_loop; /* 1 >= hear sends if a member */ 115 LIST_HEAD(, in6_multi_mship) im6o_memberships; 116 }; 117 118 /* 119 * Control options for outgoing packets 120 */ 121 122 /* Routing header related info */ 123 struct ip6po_rhinfo { 124 struct ip6_rthdr *ip6po_rhi_rthdr; /* Routing header */ 125 struct route_in6 ip6po_rhi_route; /* Route to the 1st hop */ 126 }; 127 #define ip6po_rthdr ip6po_rhinfo.ip6po_rhi_rthdr 128 #define ip6po_route ip6po_rhinfo.ip6po_rhi_route 129 130 struct ip6_pktopts { 131 struct mbuf *ip6po_m; /* Pointer to mbuf storing the data */ 132 int ip6po_hlim; /* Hoplimit for outgoing packets */ 133 struct in6_pktinfo *ip6po_pktinfo; /* Outgoing IF/address information */ 134 struct sockaddr *ip6po_nexthop; /* Next-hop address */ 135 struct ip6_hbh *ip6po_hbh; /* Hop-by-Hop options header */ 136 struct ip6_dest *ip6po_dest1; /* Destination options header(1st part) */ 137 struct ip6po_rhinfo ip6po_rhinfo; /* Routing header related info. */ 138 struct ip6_dest *ip6po_dest2; /* Destination options header(2nd part) */ 139 }; 140 141 struct ip6stat { 142 u_quad_t ip6s_total; /* total packets received */ 143 u_quad_t ip6s_tooshort; /* packet too short */ 144 u_quad_t ip6s_toosmall; /* not enough data */ 145 u_quad_t ip6s_fragments; /* fragments received */ 146 u_quad_t ip6s_fragdropped; /* frags dropped(dups, out of space) */ 147 u_quad_t ip6s_fragtimeout; /* fragments timed out */ 148 u_quad_t ip6s_fragoverflow; /* fragments that exceeded limit */ 149 u_quad_t ip6s_forward; /* packets forwarded */ 150 u_quad_t ip6s_cantforward; /* packets rcvd for unreachable dest */ 151 u_quad_t ip6s_redirectsent; /* packets forwarded on same net */ 152 u_quad_t ip6s_delivered; /* datagrams delivered to upper level*/ 153 u_quad_t ip6s_localout; /* total ip packets generated here */ 154 u_quad_t ip6s_odropped; /* lost packets due to nobufs, etc. */ 155 u_quad_t ip6s_reassembled; /* total packets reassembled ok */ 156 u_quad_t ip6s_fragmented; /* datagrams sucessfully fragmented */ 157 u_quad_t ip6s_ofragments; /* output fragments created */ 158 u_quad_t ip6s_cantfrag; /* don't fragment flag was set, etc. */ 159 u_quad_t ip6s_badoptions; /* error in option processing */ 160 u_quad_t ip6s_noroute; /* packets discarded due to no route */ 161 u_quad_t ip6s_badvers; /* ip6 version != 6 */ 162 u_quad_t ip6s_rawout; /* total raw ip packets generated */ 163 u_quad_t ip6s_badscope; /* scope error */ 164 u_quad_t ip6s_notmember; /* don't join this multicast group */ 165 u_quad_t ip6s_nxthist[256]; /* next header history */ 166 u_quad_t ip6s_m1; /* one mbuf */ 167 u_quad_t ip6s_m2m[32]; /* two or more mbuf */ 168 u_quad_t ip6s_mext1; /* one ext mbuf */ 169 u_quad_t ip6s_mext2m; /* two or more ext mbuf */ 170 u_quad_t ip6s_exthdrtoolong; /* ext hdr are not continuous */ 171 u_quad_t ip6s_nogif; /* no match gif found */ 172 u_quad_t ip6s_toomanyhdr; /* discarded due to too many headers */ 173 174 /* 175 * statistics for improvement of the source address selection 176 * algorithm: 177 * XXX: hardcoded 16 = # of ip6 multicast scope types + 1 178 */ 179 /* number of times that address selection fails */ 180 u_quad_t ip6s_sources_none; 181 /* number of times that an address on the outgoing I/F is chosen */ 182 u_quad_t ip6s_sources_sameif[16]; 183 /* number of times that an address on a non-outgoing I/F is chosen */ 184 u_quad_t ip6s_sources_otherif[16]; 185 /* 186 * number of times that an address that has the same scope 187 * from the destination is chosen. 188 */ 189 u_quad_t ip6s_sources_samescope[16]; 190 /* 191 * number of times that an address that has a different scope 192 * from the destination is chosen. 193 */ 194 u_quad_t ip6s_sources_otherscope[16]; 195 /* number of times that an deprecated address is chosen */ 196 u_quad_t ip6s_sources_deprecated[16]; 197 198 u_quad_t ip6s_forward_cachehit; 199 u_quad_t ip6s_forward_cachemiss; 200 }; 201 202 #ifdef _KERNEL 203 /* flags passed to ip6_output as last parameter */ 204 #define IPV6_DADOUTPUT 0x01 /* DAD */ 205 #define IPV6_FORWARDING 0x02 /* most of IPv6 header exists */ 206 #define IPV6_MINMTU 0x04 /* use minimum MTU (IPV6_USE_MIN_MTU) */ 207 208 extern struct ip6stat ip6stat; /* statistics */ 209 extern u_int32_t ip6_id; /* fragment identifier */ 210 extern int ip6_defhlim; /* default hop limit */ 211 extern int ip6_defmcasthlim; /* default multicast hop limit */ 212 extern int ip6_forwarding; /* act as router? */ 213 extern int ip6_forward_srcrt; /* forward src-routed? */ 214 extern int ip6_use_deprecated; /* allow deprecated addr as source */ 215 extern int ip6_rr_prune; /* router renumbering prefix 216 * walk list every 5 sec. */ 217 extern int ip6_v6only; 218 219 extern struct socket *ip6_mrouter; /* multicast routing daemon */ 220 extern int ip6_sendredirects; /* send IP redirects when forwarding? */ 221 extern int ip6_maxfragpackets; /* Maximum packets in reassembly queue */ 222 extern int ip6_sourcecheck; /* Verify source interface */ 223 extern int ip6_sourcecheck_interval; /* Interval between log messages */ 224 extern int ip6_accept_rtadv; /* Acts as a host not a router */ 225 extern int ip6_keepfaith; /* Firewall Aided Internet Translator */ 226 extern int ip6_log_interval; 227 extern time_t ip6_log_time; 228 extern int ip6_hdrnestlimit; /* upper limit of # of extension headers */ 229 extern int ip6_dad_count; /* DupAddrDetectionTransmits */ 230 231 extern u_int32_t ip6_flow_seq; 232 extern int ip6_auto_flowlabel; 233 234 extern int ip6_anonportmin; /* minimum ephemeral port */ 235 extern int ip6_anonportmax; /* maximum ephemeral port */ 236 extern int ip6_lowportmin; /* minimum reserved port */ 237 extern int ip6_lowportmax; /* maximum reserved port */ 238 239 struct in6pcb; 240 241 int icmp6_ctloutput __P((int, struct socket *, int, int, struct mbuf **)); 242 243 void ip6_init __P((void)); 244 void ip6intr __P((void)); 245 void ip6_input __P((struct mbuf *)); 246 void ip6_freemoptions __P((struct ip6_moptions *)); 247 int ip6_unknown_opt __P((u_int8_t *, struct mbuf *, int)); 248 char * ip6_get_prevhdr __P((struct mbuf *, int)); 249 int ip6_nexthdr __P((struct mbuf *, int, int, int *)); 250 int ip6_lasthdr __P((struct mbuf *, int, int, int *)); 251 int ip6_mforward __P((struct ip6_hdr *, struct ifnet *, struct mbuf *)); 252 int ip6_process_hopopts __P((struct mbuf *, u_int8_t *, int, u_int32_t *, 253 u_int32_t *)); 254 void ip6_savecontrol __P((struct in6pcb *, struct mbuf **, struct ip6_hdr *, 255 struct mbuf *)); 256 int ip6_sysctl __P((int *, u_int, void *, size_t *, void *, size_t)); 257 258 void ip6_forward __P((struct mbuf *, int)); 259 260 void ip6_mloopback __P((struct ifnet *, struct mbuf *, struct sockaddr_in6 *)); 261 int ip6_output __P((struct mbuf *, struct ip6_pktopts *, 262 struct route_in6 *, int, 263 struct ip6_moptions *, struct ifnet **)); 264 int ip6_ctloutput __P((int, struct socket *, int, int, struct mbuf **)); 265 int ip6_setpktoptions __P((struct mbuf *, struct ip6_pktopts *, int)); 266 int ip6_optlen __P((struct in6pcb *)); 267 268 int route6_input __P((struct mbuf **, int *, int)); 269 270 void frag6_init __P((void)); 271 int frag6_input __P((struct mbuf **, int *, int)); 272 void frag6_slowtimo __P((void)); 273 void frag6_drain __P((void)); 274 275 void rip6_init __P((void)); 276 int rip6_input __P((struct mbuf **mp, int *offp, int proto)); 277 void rip6_ctlinput __P((int, struct sockaddr *, void *)); 278 int rip6_ctloutput __P((int, struct socket *, int, int, struct mbuf **)); 279 int rip6_output __P((struct mbuf *, ...)); 280 int rip6_usrreq __P((struct socket *, 281 int, struct mbuf *, struct mbuf *, struct mbuf *, struct proc *)); 282 283 int dest6_input __P((struct mbuf **, int *, int)); 284 int none_input __P((struct mbuf **, int *, int)); 285 #endif /* _KERNEL */ 286 287 #endif /* !_NETINET6_IP6_VAR_H_ */ 288
Indexes created Fri Oct 17 09:09:57 GMT 2025