ip6_var.h revision 1.4.8.1
1 /* $NetBSD: ip6_var.h,v 1.4.8.1 1999/12/27 18:36:26 wrstuden Exp $ */ 2 3 /* 4 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the project nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 /* 33 * Copyright (c) 1982, 1986, 1993 34 * The Regents of the University of California. All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 3. All advertising materials mentioning features or use of this software 45 * must display the following acknowledgement: 46 * This product includes software developed by the University of 47 * California, Berkeley and its contributors. 48 * 4. Neither the name of the University nor the names of its contributors 49 * may be used to endorse or promote products derived from this software 50 * without specific prior written permission. 51 * 52 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 53 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 54 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 55 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 56 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 57 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 58 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 59 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 60 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 61 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 62 * SUCH DAMAGE. 63 * 64 * @(#)ip_var.h 8.1 (Berkeley) 6/10/93 65 */ 66 67 #ifndef _NETINET6_IP6_VAR_H_ 68 #define _NETINET6_IP6_VAR_H_ 69 70 /* 71 * IP6 reassembly queue structure. Each fragment 72 * being reassembled is attached to one of these structures. 73 */ 74 struct ip6q { 75 u_long ip6q_head; 76 u_short ip6q_len; 77 u_char ip6q_nxt; 78 u_char ip6q_hlim; 79 struct ip6asfrag *ip6q_down; 80 struct ip6asfrag *ip6q_up; 81 u_long ip6q_ident; 82 u_char ip6q_arrive; 83 u_char ip6q_ttl; 84 struct in6_addr ip6q_src, ip6q_dst; 85 struct ip6q *ip6q_next; 86 struct ip6q *ip6q_prev; 87 int ip6q_unfrglen; 88 #ifdef notyet 89 u_char *ip6q_nxtp; 90 #endif 91 }; 92 93 struct ip6asfrag { 94 u_long ip6af_head; 95 u_short ip6af_len; 96 u_char ip6af_nxt; 97 u_char ip6af_hlim; 98 /* must not override the above members during reassembling */ 99 struct ip6asfrag *ip6af_down; 100 struct ip6asfrag *ip6af_up; 101 u_short ip6af_mff; 102 u_short ip6af_off; 103 struct mbuf *ip6af_m; 104 u_long ip6af_offset; /* offset where next header starts */ 105 u_short ip6af_frglen; /* fragmentable part length */ 106 u_char ip6af_x1[10]; 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 /* XXX the following two items are not really AF_INET6 thing */ 174 u_quad_t ip6s_pulldown; /* # of calls to m_pulldown */ 175 u_quad_t ip6s_pulldown_copy; /* # of mbuf copies in m_pulldown */ 176 u_quad_t ip6s_pulldown_alloc; /* # of mbuf allocs in m_pulldown */ 177 }; 178 179 #ifdef _KERNEL 180 /* flags passed to ip6_output as last parameter */ 181 #define IPV6_DADOUTPUT 0x01 /* DAD */ 182 #define IPV6_FORWARDING 0x02 /* most of IPv6 header exists */ 183 184 extern struct ip6stat ip6stat; /* statistics */ 185 extern u_int32_t ip6_id; /* fragment identifier */ 186 extern int ip6_defhlim; /* default hop limit */ 187 extern int ip6_defmcasthlim; /* default multicast hop limit */ 188 extern int ip6_forwarding; /* act as router? */ 189 extern int ip6_forward_srcrt; /* forward src-routed? */ 190 extern int ip6_gif_hlim; /* Hop limit for gif encap packet */ 191 extern int ip6_use_deprecated; /* allow deprecated addr as source */ 192 extern int ip6_rr_prune; /* router renumbering prefix 193 * walk list every 5 sec. */ 194 #ifdef MAPPED_ADDR_ENABLED 195 extern int ip6_mapped_addr_on; 196 #endif /* MAPPED_ADDR_ENABLED */ 197 198 extern struct socket *ip6_mrouter; /* multicast routing daemon */ 199 extern int ip6_sendredirects; /* send IP redirects when forwarding? */ 200 extern int ip6_maxfragpackets; /* Maximum packets in reassembly queue */ 201 extern int ip6_sourcecheck; /* Verify source interface */ 202 extern int ip6_sourcecheck_interval; /* Interval between log messages */ 203 extern int ip6_accept_rtadv; /* Acts as a host not a router */ 204 extern int ip6_keepfaith; /* Firewall Aided Internet Translator */ 205 extern int ip6_log_interval; 206 extern time_t ip6_log_time; 207 extern int ip6_hdrnestlimit; /* upper limit of # of extension headers */ 208 extern int ip6_dad_count; /* DupAddrDetectionTransmits */ 209 210 extern u_int32_t ip6_flow_seq; 211 extern int ip6_auto_flowlabel; 212 213 #if !(defined(__FreeBSD__) && __FreeBSD__ >= 3) 214 struct in6pcb; 215 #endif 216 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 217 extern struct pr_usrreqs rip6_usrreqs; 218 struct sockopt; 219 #endif 220 221 #if (defined(__FreeBSD__) && __FreeBSD__ >= 3) || defined(__OpenBSD__) || (defined(__bsdi__) && _BSDI_VERSION >= 199802) 222 struct inpcb; 223 #endif 224 225 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 226 int icmp6_ctloutput __P((struct socket *, struct sockopt *sopt)); 227 #else 228 int icmp6_ctloutput __P((int, struct socket *, int, int, struct mbuf **)); 229 #endif 230 231 void ip6_init __P((void)); 232 void ip6intr __P((void)); 233 void ip6_input __P((struct mbuf *)); 234 void ip6_freemoptions __P((struct ip6_moptions *)); 235 int ip6_unknown_opt __P((u_int8_t *, struct mbuf *, int)); 236 char * ip6_get_prevhdr __P((struct mbuf *, int)); 237 int ip6_mforward __P((struct ip6_hdr *, struct ifnet *, struct mbuf *)); 238 int ip6_process_hopopts __P((struct mbuf *, u_int8_t *, int, u_int32_t *, 239 u_int32_t *)); 240 #if (defined(__FreeBSD__) && __FreeBSD__ >= 3) || defined(__OpenBSD__) || (defined(__bsdi__) && _BSDI_VERSION >= 199802) 241 void ip6_savecontrol __P((struct inpcb *, struct mbuf **, struct ip6_hdr *, 242 struct mbuf *)); 243 #else 244 void ip6_savecontrol __P((struct in6pcb *, struct mbuf **, struct ip6_hdr *, 245 struct mbuf *)); 246 #endif 247 int ip6_sysctl __P((int *, u_int, void *, size_t *, void *, size_t)); 248 249 void ip6_forward __P((struct mbuf *, int)); 250 251 void ip6_mloopback __P((struct ifnet *, struct mbuf *, struct sockaddr_in6 *)); 252 int ip6_output __P((struct mbuf *, struct ip6_pktopts *, 253 struct route_in6 *, int, 254 struct ip6_moptions *, struct ifnet **)); 255 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 256 int ip6_ctloutput __P((struct socket *, struct sockopt *sopt)); 257 #else 258 int ip6_ctloutput __P((int, struct socket *, int, int, struct mbuf **)); 259 #endif 260 int ip6_setpktoptions __P((struct mbuf *, struct ip6_pktopts *, int)); 261 #if (defined(__FreeBSD__) && __FreeBSD__ >= 3) || defined(__OpenBSD__) || (defined(__bsdi__) && _BSDI_VERSION >= 199802) 262 int ip6_optlen __P((struct inpcb *)); 263 #else 264 int ip6_optlen __P((struct in6pcb *)); 265 #endif 266 267 int route6_input __P((struct mbuf **, int *, int)); 268 269 void frag6_init __P((void)); 270 int frag6_input __P((struct mbuf **, int *, int)); 271 void frag6_slowtimo __P((void)); 272 void frag6_drain __P((void)); 273 274 void rip6_init __P((void)); 275 int rip6_input __P((struct mbuf **mp, int *offp, int proto)); 276 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 277 int rip6_ctloutput __P((struct socket *so, struct sockopt *sopt)); 278 #else 279 int rip6_ctloutput __P((int, struct socket *, int, int, struct mbuf **)); 280 #endif 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 Sun Oct 19 02:09:48 GMT 2025