ip6_var.h revision 1.2.2.2
1 /* 2 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the project nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 /* 31 * Copyright (c) 1982, 1986, 1993 32 * The Regents of the University of California. All rights reserved. 33 * 34 * Redistribution and use in source and binary forms, with or without 35 * modification, are permitted provided that the following conditions 36 * are met: 37 * 1. Redistributions of source code must retain the above copyright 38 * notice, this list of conditions and the following disclaimer. 39 * 2. Redistributions in binary form must reproduce the above copyright 40 * notice, this list of conditions and the following disclaimer in the 41 * documentation and/or other materials provided with the distribution. 42 * 3. All advertising materials mentioning features or use of this software 43 * must display the following acknowledgement: 44 * This product includes software developed by the University of 45 * California, Berkeley and its contributors. 46 * 4. Neither the name of the University nor the names of its contributors 47 * may be used to endorse or promote products derived from this software 48 * without specific prior written permission. 49 * 50 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 51 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 52 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 53 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 54 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 55 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 56 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 57 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 58 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 59 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 60 * SUCH DAMAGE. 61 * 62 * @(#)ip_var.h 8.1 (Berkeley) 6/10/93 63 */ 64 65 #ifndef _NETINET6_IP6_VAR_H_ 66 #define _NETINET6_IP6_VAR_H_ 67 68 /* 69 * IP6 reassembly queue structure. Each fragment 70 * being reassembled is attached to one of these structures. 71 */ 72 struct ip6q { 73 u_long ip6q_head; 74 u_short ip6q_len; 75 u_char ip6q_nxt; 76 u_char ip6q_hlim; 77 struct ip6asfrag *ip6q_down; 78 struct ip6asfrag *ip6q_up; 79 u_long ip6q_ident; 80 u_char ip6q_arrive; 81 u_char ip6q_ttl; 82 struct in6_addr ip6q_src, ip6q_dst; 83 struct ip6q *ip6q_next; 84 struct ip6q *ip6q_prev; 85 int ip6q_unfrglen; 86 #ifdef notyet 87 u_char *ip6q_nxtp; 88 #endif 89 }; 90 91 struct ip6asfrag { 92 u_long ip6af_head; 93 u_short ip6af_len; 94 u_char ip6af_nxt; 95 u_char ip6af_hlim; 96 /* must not override the above members during reassembling */ 97 struct ip6asfrag *ip6af_down; 98 struct ip6asfrag *ip6af_up; 99 u_short ip6af_mff; 100 u_short ip6af_off; 101 struct mbuf *ip6af_m; 102 u_long ip6af_offset; /* offset where next header starts */ 103 u_short ip6af_frglen; /* fragmentable part length */ 104 u_char ip6af_x1[10]; 105 }; 106 107 #define IP6_REASS_MBUF(ip6af) (*(struct mbuf **)&((ip6af)->ip6af_m)) 108 109 struct ip6_moptions { 110 struct ifnet *im6o_multicast_ifp; /* ifp for outgoing multicasts */ 111 u_char im6o_multicast_hlim; /* hoplimit for outgoing multicasts */ 112 u_char im6o_multicast_loop; /* 1 >= hear sends if a member */ 113 LIST_HEAD(, in6_multi_mship) im6o_memberships; 114 }; 115 116 /* 117 * Control options for outgoing packets 118 */ 119 120 /* Routing header related info */ 121 struct ip6po_rhinfo { 122 struct ip6_rthdr *ip6po_rhi_rthdr; /* Routing header */ 123 struct route_in6 ip6po_rhi_route; /* Route to the 1st hop */ 124 }; 125 #define ip6po_rthdr ip6po_rhinfo.ip6po_rhi_rthdr 126 #define ip6po_route ip6po_rhinfo.ip6po_rhi_route 127 128 struct ip6_pktopts { 129 struct mbuf *ip6po_m; /* Pointer to mbuf storing the data */ 130 int ip6po_hlim; /* Hoplimit for outgoing packets */ 131 struct in6_pktinfo *ip6po_pktinfo; /* Outgoing IF/address information */ 132 struct sockaddr *ip6po_nexthop; /* Next-hop address */ 133 struct ip6_hbh *ip6po_hbh; /* Hop-by-Hop options header */ 134 struct ip6_dest *ip6po_dest1; /* Destination options header(1st part) */ 135 struct ip6po_rhinfo ip6po_rhinfo; /* Routing header related info. */ 136 struct ip6_dest *ip6po_dest2; /* Destination options header(2nd part) */ 137 }; 138 139 struct ip6stat { 140 u_long ip6s_total; /* total packets received */ 141 u_long ip6s_tooshort; /* packet too short */ 142 u_long ip6s_toosmall; /* not enough data */ 143 u_long ip6s_fragments; /* fragments received */ 144 u_long ip6s_fragdropped; /* frags dropped(dups, out of space) */ 145 u_long ip6s_fragtimeout; /* fragments timed out */ 146 u_long ip6s_fragoverflow; /* fragments that exceeded limit */ 147 u_long ip6s_forward; /* packets forwarded */ 148 u_long ip6s_cantforward; /* packets rcvd for unreachable dest */ 149 u_long ip6s_redirectsent; /* packets forwarded on same net */ 150 u_long ip6s_delivered; /* datagrams delivered to upper level*/ 151 u_long ip6s_localout; /* total ip packets generated here */ 152 u_long ip6s_odropped; /* lost packets due to nobufs, etc. */ 153 u_long ip6s_reassembled; /* total packets reassembled ok */ 154 u_long ip6s_fragmented; /* datagrams sucessfully fragmented */ 155 u_long ip6s_ofragments; /* output fragments created */ 156 u_long ip6s_cantfrag; /* don't fragment flag was set, etc. */ 157 u_long ip6s_badoptions; /* error in option processing */ 158 u_long ip6s_noroute; /* packets discarded due to no route */ 159 u_long ip6s_badvers; /* ip6 version != 6 */ 160 u_long ip6s_rawout; /* total raw ip packets generated */ 161 u_long ip6s_badscope; /* scope error */ 162 u_long ip6s_notmember; /* don't join this multicast group */ 163 u_long ip6s_nxthist[256]; /* next header history */ 164 u_long ip6s_m1; /* one mbuf */ 165 u_long ip6s_m2m[32]; /* two or more mbuf */ 166 u_long ip6s_mext1; /* one ext mbuf */ 167 u_long ip6s_mext2m; /* two or more ext mbuf */ 168 u_long ip6s_exthdrtoolong; /* ext hdr are not continuous */ 169 u_long ip6s_nogif; /* no match gif found */ 170 u_long ip6s_toomanyhdr; /* discarded due to too many headers */ 171 }; 172 173 #ifdef _KERNEL 174 /* flags passed to ip6_output as last parameter */ 175 #define IPV6_DADOUTPUT 0x01 /* DAD */ 176 #define IPV6_FORWARDING 0x02 /* most of IPv6 header exists */ 177 178 extern struct ip6stat ip6stat; /* statistics */ 179 extern u_long ip6_id; /* fragment identifier */ 180 extern int ip6_defhlim; /* default hop limit */ 181 extern int ip6_defmcasthlim; /* default multicast hop limit */ 182 extern int ip6_forwarding; /* act as router? */ 183 extern int ip6_forward_srcrt; /* forward src-routed? */ 184 extern int ip6_gif_hlim; /* Hop limit for gif encap packet */ 185 extern struct socket *ip6_mrouter; /* multicast routing daemon */ 186 extern int ip6_sendredirects; /* send IP redirects when forwarding? */ 187 extern int ip6_maxfragpackets; /* Maximum packets in reassembly queue */ 188 extern int ip6_sourcecheck; /* Verify source interface */ 189 extern int ip6_sourcecheck_interval; /* Interval between log messages */ 190 extern int ip6_accept_rtadv; /* Acts as a host not a router */ 191 extern int ip6_keepfaith; /* Firewall Aided Internet Translator */ 192 extern int ip6_log_interval; 193 extern time_t ip6_log_time; 194 extern int ip6_hdrnestlimit; /* upper limit of # of extension headers */ 195 extern int ip6_dad_count; /* DupAddrDetectionTransmits */ 196 197 extern u_int32_t ip6_flow_seq; 198 extern int ip6_auto_flowlabel; 199 200 #if !defined(__FreeBSD__) || __FreeBSD__ < 3 201 struct in6pcb; 202 #endif 203 204 int icmp6_ctloutput __P((int, struct socket *, int, int, struct mbuf **)); 205 void ip6_init __P((void)); 206 void ip6intr __P((void)); 207 void ip6_input __P((struct mbuf *)); 208 void ip6_freemoptions __P((struct ip6_moptions *)); 209 int ip6_unknown_opt __P((u_int8_t *, struct mbuf *, int)); 210 char * ip6_get_prevhdr __P((struct mbuf *, int)); 211 int ip6_mforward __P((struct ip6_hdr *, struct ifnet *, struct mbuf *)); 212 int ip6_process_hopopts __P((struct mbuf *, u_int8_t *, int, long *, 213 u_int32_t *)); 214 void ip6_savecontrol __P((struct in6pcb *, struct mbuf **, struct ip6_hdr *, 215 struct mbuf *)); 216 int ip6_sysctl __P((int *, u_int, void *, size_t *, void *, size_t)); 217 218 void ip6_forward __P((struct mbuf *, int)); 219 220 void ip6_mloopback __P((struct ifnet *, struct mbuf *, struct sockaddr_in6 *)); 221 int ip6_output __P((struct mbuf *, struct ip6_pktopts *, 222 struct route_in6 *, int, 223 struct ip6_moptions *)); 224 int ip6_ctloutput __P((int, struct socket *, int, int, struct mbuf **)); 225 int ip6_setpktoptions __P((struct mbuf *, struct ip6_pktopts *, int)); 226 int ip6_optlen __P((struct in6pcb *)); 227 228 int route6_input __P((struct mbuf **, int *, int)); 229 230 void frag6_init __P((void)); 231 int frag6_input __P((struct mbuf **, int *, int)); 232 void frag6_slowtimo __P((void)); 233 void frag6_drain __P((void)); 234 235 void rip6_init __P((void)); 236 int rip6_input __P((struct mbuf **mp, int *offp, int proto)); 237 int rip6_ctloutput __P((int, struct socket *, int, int, struct mbuf **)); 238 int rip6_output __P((struct mbuf *, ...)); 239 int rip6_usrreq __P((struct socket *, 240 int, struct mbuf *, struct mbuf *, struct mbuf *, struct proc *)); 241 242 int dest6_input __P((struct mbuf **, int *, int)); 243 int none_input __P((struct mbuf **, int *, int)); 244 #endif /* _KERNEL */ 245 246 #endif /* !_NETINET6_IP6_VAR_H_ */ 247
Indexes created Sun Oct 19 02:09:48 GMT 2025