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ip6_var.h (241916) ip6_var.h (242463)
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 * $KAME: ip6_var.h,v 1.62 2001/05/03 14:51:48 itojun Exp $
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 * 4. Neither the name of the University nor the names of its contributors
45 * may be used to endorse or promote products derived from this software
46 * without specific prior written permission.
47 *
48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
58 * SUCH DAMAGE.
59 *
60 * @(#)ip_var.h 8.1 (Berkeley) 6/10/93
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 * $KAME: ip6_var.h,v 1.62 2001/05/03 14:51:48 itojun Exp $
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 * 4. Neither the name of the University nor the names of its contributors
45 * may be used to endorse or promote products derived from this software
46 * without specific prior written permission.
47 *
48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
58 * SUCH DAMAGE.
59 *
60 * @(#)ip_var.h 8.1 (Berkeley) 6/10/93
61 * $FreeBSD: head/sys/netinet6/ip6_var.h 241916 2012-10-22 21:49:56Z delphij $
61 * $FreeBSD: head/sys/netinet6/ip6_var.h 242463 2012-11-02 01:20:55Z ae $
62 */
63
64#ifndef _NETINET6_IP6_VAR_H_
65#define _NETINET6_IP6_VAR_H_
66
67/*
68 * IP6 reassembly queue structure. Each fragment
69 * being reassembled is attached to one of these structures.
70 */
71struct ip6q {
72 struct ip6asfrag *ip6q_down;
73 struct ip6asfrag *ip6q_up;
74 u_int32_t ip6q_ident;
75 u_int8_t ip6q_nxt;
76 u_int8_t ip6q_ecn;
77 u_int8_t ip6q_ttl;
78 struct in6_addr ip6q_src, ip6q_dst;
79 struct ip6q *ip6q_next;
80 struct ip6q *ip6q_prev;
81 int ip6q_unfrglen; /* len of unfragmentable part */
82#ifdef notyet
83 u_char *ip6q_nxtp;
84#endif
85 int ip6q_nfrag; /* # of fragments */
86 struct label *ip6q_label;
87};
88
89struct ip6asfrag {
90 struct ip6asfrag *ip6af_down;
91 struct ip6asfrag *ip6af_up;
92 struct mbuf *ip6af_m;
93 int ip6af_offset; /* offset in ip6af_m to next header */
94 int ip6af_frglen; /* fragmentable part length */
95 int ip6af_off; /* fragment offset */
96 u_int16_t ip6af_mff; /* more fragment bit in frag off */
97};
98
99#define IP6_REASS_MBUF(ip6af) (*(struct mbuf **)&((ip6af)->ip6af_m))
100
101/*
102 * Structure attached to inpcb.in6p_moptions and
103 * passed to ip6_output when IPv6 multicast options are in use.
104 * This structure is lazy-allocated.
105 */
106struct ip6_moptions {
107 struct ifnet *im6o_multicast_ifp; /* ifp for outgoing multicasts */
108 u_char im6o_multicast_hlim; /* hoplimit for outgoing multicasts */
109 u_char im6o_multicast_loop; /* 1 >= hear sends if a member */
110 u_short im6o_num_memberships; /* no. memberships this socket */
111 u_short im6o_max_memberships; /* max memberships this socket */
112 struct in6_multi **im6o_membership; /* group memberships */
113 struct in6_mfilter *im6o_mfilters; /* source filters */
114};
115
116/*
117 * Control options for outgoing packets
118 */
119
120/* Routing header related info */
121struct 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/* Nexthop related info */
129struct ip6po_nhinfo {
130 struct sockaddr *ip6po_nhi_nexthop;
131 struct route_in6 ip6po_nhi_route; /* Route to the nexthop */
132};
133#define ip6po_nexthop ip6po_nhinfo.ip6po_nhi_nexthop
134#define ip6po_nextroute ip6po_nhinfo.ip6po_nhi_route
135
136struct ip6_pktopts {
137 struct mbuf *ip6po_m; /* Pointer to mbuf storing the data */
138 int ip6po_hlim; /* Hoplimit for outgoing packets */
139
140 /* Outgoing IF/address information */
141 struct in6_pktinfo *ip6po_pktinfo;
142
143 /* Next-hop address information */
144 struct ip6po_nhinfo ip6po_nhinfo;
145
146 struct ip6_hbh *ip6po_hbh; /* Hop-by-Hop options header */
147
148 /* Destination options header (before a routing header) */
149 struct ip6_dest *ip6po_dest1;
150
151 /* Routing header related info. */
152 struct ip6po_rhinfo ip6po_rhinfo;
153
154 /* Destination options header (after a routing header) */
155 struct ip6_dest *ip6po_dest2;
156
157 int ip6po_tclass; /* traffic class */
158
159 int ip6po_minmtu; /* fragment vs PMTU discovery policy */
160#define IP6PO_MINMTU_MCASTONLY -1 /* default; send at min MTU for multicast*/
161#define IP6PO_MINMTU_DISABLE 0 /* always perform pmtu disc */
162#define IP6PO_MINMTU_ALL 1 /* always send at min MTU */
163
164 int ip6po_prefer_tempaddr; /* whether temporary addresses are
165 preferred as source address */
166#define IP6PO_TEMPADDR_SYSTEM -1 /* follow the system default */
167#define IP6PO_TEMPADDR_NOTPREFER 0 /* not prefer temporary address */
168#define IP6PO_TEMPADDR_PREFER 1 /* prefer temporary address */
169
170 int ip6po_flags;
171#if 0 /* parameters in this block is obsolete. do not reuse the values. */
172#define IP6PO_REACHCONF 0x01 /* upper-layer reachability confirmation. */
173#define IP6PO_MINMTU 0x02 /* use minimum MTU (IPV6_USE_MIN_MTU) */
174#endif
175#define IP6PO_DONTFRAG 0x04 /* disable fragmentation (IPV6_DONTFRAG) */
176#define IP6PO_USECOA 0x08 /* use care of address */
177};
178
179/*
180 * Control options for incoming packets
181 */
182
183struct ip6stat {
184 u_quad_t ip6s_total; /* total packets received */
185 u_quad_t ip6s_tooshort; /* packet too short */
186 u_quad_t ip6s_toosmall; /* not enough data */
187 u_quad_t ip6s_fragments; /* fragments received */
188 u_quad_t ip6s_fragdropped; /* frags dropped(dups, out of space) */
189 u_quad_t ip6s_fragtimeout; /* fragments timed out */
190 u_quad_t ip6s_fragoverflow; /* fragments that exceeded limit */
191 u_quad_t ip6s_forward; /* packets forwarded */
192 u_quad_t ip6s_cantforward; /* packets rcvd for unreachable dest */
193 u_quad_t ip6s_redirectsent; /* packets forwarded on same net */
194 u_quad_t ip6s_delivered; /* datagrams delivered to upper level*/
195 u_quad_t ip6s_localout; /* total ip packets generated here */
196 u_quad_t ip6s_odropped; /* lost packets due to nobufs, etc. */
197 u_quad_t ip6s_reassembled; /* total packets reassembled ok */
198 u_quad_t ip6s_fragmented; /* datagrams successfully fragmented */
199 u_quad_t ip6s_ofragments; /* output fragments created */
200 u_quad_t ip6s_cantfrag; /* don't fragment flag was set, etc. */
201 u_quad_t ip6s_badoptions; /* error in option processing */
202 u_quad_t ip6s_noroute; /* packets discarded due to no route */
203 u_quad_t ip6s_badvers; /* ip6 version != 6 */
204 u_quad_t ip6s_rawout; /* total raw ip packets generated */
205 u_quad_t ip6s_badscope; /* scope error */
206 u_quad_t ip6s_notmember; /* don't join this multicast group */
207 u_quad_t ip6s_nxthist[256]; /* next header history */
208 u_quad_t ip6s_m1; /* one mbuf */
209 u_quad_t ip6s_m2m[32]; /* two or more mbuf */
210 u_quad_t ip6s_mext1; /* one ext mbuf */
211 u_quad_t ip6s_mext2m; /* two or more ext mbuf */
212 u_quad_t ip6s_exthdrtoolong; /* ext hdr are not contiguous */
213 u_quad_t ip6s_nogif; /* no match gif found */
214 u_quad_t ip6s_toomanyhdr; /* discarded due to too many headers */
215
216 /*
217 * statistics for improvement of the source address selection
218 * algorithm:
219 * XXX: hardcoded 16 = # of ip6 multicast scope types + 1
220 */
221 /* number of times that address selection fails */
222 u_quad_t ip6s_sources_none;
223 /* number of times that an address on the outgoing I/F is chosen */
224 u_quad_t ip6s_sources_sameif[16];
225 /* number of times that an address on a non-outgoing I/F is chosen */
226 u_quad_t ip6s_sources_otherif[16];
227 /*
228 * number of times that an address that has the same scope
229 * from the destination is chosen.
230 */
231 u_quad_t ip6s_sources_samescope[16];
232 /*
233 * number of times that an address that has a different scope
234 * from the destination is chosen.
235 */
236 u_quad_t ip6s_sources_otherscope[16];
237 /* number of times that a deprecated address is chosen */
238 u_quad_t ip6s_sources_deprecated[16];
239
240 /* number of times that each rule of source selection is applied. */
241 u_quad_t ip6s_sources_rule[16];
242};
243
244#ifdef _KERNEL
245#define IP6STAT_ADD(name, val) V_ip6stat.name += (val)
246#define IP6STAT_SUB(name, val) V_ip6stat.name -= (val)
247#define IP6STAT_INC(name) IP6STAT_ADD(name, 1)
248#define IP6STAT_DEC(name) IP6STAT_SUB(name, 1)
249#endif
250
251#ifdef _KERNEL
252/*
253 * IPv6 onion peeling state.
254 * it will be initialized when we come into ip6_input().
255 * XXX do not make it a kitchen sink!
256 */
257struct ip6aux {
258 u_int32_t ip6a_flags;
259#define IP6A_SWAP 0x01 /* swapped home/care-of on packet */
260#define IP6A_HASEEN 0x02 /* HA was present */
261#define IP6A_BRUID 0x04 /* BR Unique Identifier was present */
262#define IP6A_RTALERTSEEN 0x08 /* rtalert present */
263
264 /* ip6.ip6_src */
265 struct in6_addr ip6a_careof; /* care-of address of the peer */
266 struct in6_addr ip6a_home; /* home address of the peer */
267 u_int16_t ip6a_bruid; /* BR unique identifier */
268
269 /* ip6.ip6_dst */
270 struct in6_ifaddr *ip6a_dstia6; /* my ifaddr that matches ip6_dst */
271
272 /* rtalert */
273 u_int16_t ip6a_rtalert; /* rtalert option value */
274
275 /*
276 * decapsulation history will be here.
277 * with IPsec it may not be accurate.
278 */
279};
280#endif
281
282#ifdef _KERNEL
283/* flags passed to ip6_output as last parameter */
284#define IPV6_UNSPECSRC 0x01 /* allow :: as the source address */
285#define IPV6_FORWARDING 0x02 /* most of IPv6 header exists */
286#define IPV6_MINMTU 0x04 /* use minimum MTU (IPV6_USE_MIN_MTU) */
287
62 */
63
64#ifndef _NETINET6_IP6_VAR_H_
65#define _NETINET6_IP6_VAR_H_
66
67/*
68 * IP6 reassembly queue structure. Each fragment
69 * being reassembled is attached to one of these structures.
70 */
71struct ip6q {
72 struct ip6asfrag *ip6q_down;
73 struct ip6asfrag *ip6q_up;
74 u_int32_t ip6q_ident;
75 u_int8_t ip6q_nxt;
76 u_int8_t ip6q_ecn;
77 u_int8_t ip6q_ttl;
78 struct in6_addr ip6q_src, ip6q_dst;
79 struct ip6q *ip6q_next;
80 struct ip6q *ip6q_prev;
81 int ip6q_unfrglen; /* len of unfragmentable part */
82#ifdef notyet
83 u_char *ip6q_nxtp;
84#endif
85 int ip6q_nfrag; /* # of fragments */
86 struct label *ip6q_label;
87};
88
89struct ip6asfrag {
90 struct ip6asfrag *ip6af_down;
91 struct ip6asfrag *ip6af_up;
92 struct mbuf *ip6af_m;
93 int ip6af_offset; /* offset in ip6af_m to next header */
94 int ip6af_frglen; /* fragmentable part length */
95 int ip6af_off; /* fragment offset */
96 u_int16_t ip6af_mff; /* more fragment bit in frag off */
97};
98
99#define IP6_REASS_MBUF(ip6af) (*(struct mbuf **)&((ip6af)->ip6af_m))
100
101/*
102 * Structure attached to inpcb.in6p_moptions and
103 * passed to ip6_output when IPv6 multicast options are in use.
104 * This structure is lazy-allocated.
105 */
106struct ip6_moptions {
107 struct ifnet *im6o_multicast_ifp; /* ifp for outgoing multicasts */
108 u_char im6o_multicast_hlim; /* hoplimit for outgoing multicasts */
109 u_char im6o_multicast_loop; /* 1 >= hear sends if a member */
110 u_short im6o_num_memberships; /* no. memberships this socket */
111 u_short im6o_max_memberships; /* max memberships this socket */
112 struct in6_multi **im6o_membership; /* group memberships */
113 struct in6_mfilter *im6o_mfilters; /* source filters */
114};
115
116/*
117 * Control options for outgoing packets
118 */
119
120/* Routing header related info */
121struct 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/* Nexthop related info */
129struct ip6po_nhinfo {
130 struct sockaddr *ip6po_nhi_nexthop;
131 struct route_in6 ip6po_nhi_route; /* Route to the nexthop */
132};
133#define ip6po_nexthop ip6po_nhinfo.ip6po_nhi_nexthop
134#define ip6po_nextroute ip6po_nhinfo.ip6po_nhi_route
135
136struct ip6_pktopts {
137 struct mbuf *ip6po_m; /* Pointer to mbuf storing the data */
138 int ip6po_hlim; /* Hoplimit for outgoing packets */
139
140 /* Outgoing IF/address information */
141 struct in6_pktinfo *ip6po_pktinfo;
142
143 /* Next-hop address information */
144 struct ip6po_nhinfo ip6po_nhinfo;
145
146 struct ip6_hbh *ip6po_hbh; /* Hop-by-Hop options header */
147
148 /* Destination options header (before a routing header) */
149 struct ip6_dest *ip6po_dest1;
150
151 /* Routing header related info. */
152 struct ip6po_rhinfo ip6po_rhinfo;
153
154 /* Destination options header (after a routing header) */
155 struct ip6_dest *ip6po_dest2;
156
157 int ip6po_tclass; /* traffic class */
158
159 int ip6po_minmtu; /* fragment vs PMTU discovery policy */
160#define IP6PO_MINMTU_MCASTONLY -1 /* default; send at min MTU for multicast*/
161#define IP6PO_MINMTU_DISABLE 0 /* always perform pmtu disc */
162#define IP6PO_MINMTU_ALL 1 /* always send at min MTU */
163
164 int ip6po_prefer_tempaddr; /* whether temporary addresses are
165 preferred as source address */
166#define IP6PO_TEMPADDR_SYSTEM -1 /* follow the system default */
167#define IP6PO_TEMPADDR_NOTPREFER 0 /* not prefer temporary address */
168#define IP6PO_TEMPADDR_PREFER 1 /* prefer temporary address */
169
170 int ip6po_flags;
171#if 0 /* parameters in this block is obsolete. do not reuse the values. */
172#define IP6PO_REACHCONF 0x01 /* upper-layer reachability confirmation. */
173#define IP6PO_MINMTU 0x02 /* use minimum MTU (IPV6_USE_MIN_MTU) */
174#endif
175#define IP6PO_DONTFRAG 0x04 /* disable fragmentation (IPV6_DONTFRAG) */
176#define IP6PO_USECOA 0x08 /* use care of address */
177};
178
179/*
180 * Control options for incoming packets
181 */
182
183struct ip6stat {
184 u_quad_t ip6s_total; /* total packets received */
185 u_quad_t ip6s_tooshort; /* packet too short */
186 u_quad_t ip6s_toosmall; /* not enough data */
187 u_quad_t ip6s_fragments; /* fragments received */
188 u_quad_t ip6s_fragdropped; /* frags dropped(dups, out of space) */
189 u_quad_t ip6s_fragtimeout; /* fragments timed out */
190 u_quad_t ip6s_fragoverflow; /* fragments that exceeded limit */
191 u_quad_t ip6s_forward; /* packets forwarded */
192 u_quad_t ip6s_cantforward; /* packets rcvd for unreachable dest */
193 u_quad_t ip6s_redirectsent; /* packets forwarded on same net */
194 u_quad_t ip6s_delivered; /* datagrams delivered to upper level*/
195 u_quad_t ip6s_localout; /* total ip packets generated here */
196 u_quad_t ip6s_odropped; /* lost packets due to nobufs, etc. */
197 u_quad_t ip6s_reassembled; /* total packets reassembled ok */
198 u_quad_t ip6s_fragmented; /* datagrams successfully fragmented */
199 u_quad_t ip6s_ofragments; /* output fragments created */
200 u_quad_t ip6s_cantfrag; /* don't fragment flag was set, etc. */
201 u_quad_t ip6s_badoptions; /* error in option processing */
202 u_quad_t ip6s_noroute; /* packets discarded due to no route */
203 u_quad_t ip6s_badvers; /* ip6 version != 6 */
204 u_quad_t ip6s_rawout; /* total raw ip packets generated */
205 u_quad_t ip6s_badscope; /* scope error */
206 u_quad_t ip6s_notmember; /* don't join this multicast group */
207 u_quad_t ip6s_nxthist[256]; /* next header history */
208 u_quad_t ip6s_m1; /* one mbuf */
209 u_quad_t ip6s_m2m[32]; /* two or more mbuf */
210 u_quad_t ip6s_mext1; /* one ext mbuf */
211 u_quad_t ip6s_mext2m; /* two or more ext mbuf */
212 u_quad_t ip6s_exthdrtoolong; /* ext hdr are not contiguous */
213 u_quad_t ip6s_nogif; /* no match gif found */
214 u_quad_t ip6s_toomanyhdr; /* discarded due to too many headers */
215
216 /*
217 * statistics for improvement of the source address selection
218 * algorithm:
219 * XXX: hardcoded 16 = # of ip6 multicast scope types + 1
220 */
221 /* number of times that address selection fails */
222 u_quad_t ip6s_sources_none;
223 /* number of times that an address on the outgoing I/F is chosen */
224 u_quad_t ip6s_sources_sameif[16];
225 /* number of times that an address on a non-outgoing I/F is chosen */
226 u_quad_t ip6s_sources_otherif[16];
227 /*
228 * number of times that an address that has the same scope
229 * from the destination is chosen.
230 */
231 u_quad_t ip6s_sources_samescope[16];
232 /*
233 * number of times that an address that has a different scope
234 * from the destination is chosen.
235 */
236 u_quad_t ip6s_sources_otherscope[16];
237 /* number of times that a deprecated address is chosen */
238 u_quad_t ip6s_sources_deprecated[16];
239
240 /* number of times that each rule of source selection is applied. */
241 u_quad_t ip6s_sources_rule[16];
242};
243
244#ifdef _KERNEL
245#define IP6STAT_ADD(name, val) V_ip6stat.name += (val)
246#define IP6STAT_SUB(name, val) V_ip6stat.name -= (val)
247#define IP6STAT_INC(name) IP6STAT_ADD(name, 1)
248#define IP6STAT_DEC(name) IP6STAT_SUB(name, 1)
249#endif
250
251#ifdef _KERNEL
252/*
253 * IPv6 onion peeling state.
254 * it will be initialized when we come into ip6_input().
255 * XXX do not make it a kitchen sink!
256 */
257struct ip6aux {
258 u_int32_t ip6a_flags;
259#define IP6A_SWAP 0x01 /* swapped home/care-of on packet */
260#define IP6A_HASEEN 0x02 /* HA was present */
261#define IP6A_BRUID 0x04 /* BR Unique Identifier was present */
262#define IP6A_RTALERTSEEN 0x08 /* rtalert present */
263
264 /* ip6.ip6_src */
265 struct in6_addr ip6a_careof; /* care-of address of the peer */
266 struct in6_addr ip6a_home; /* home address of the peer */
267 u_int16_t ip6a_bruid; /* BR unique identifier */
268
269 /* ip6.ip6_dst */
270 struct in6_ifaddr *ip6a_dstia6; /* my ifaddr that matches ip6_dst */
271
272 /* rtalert */
273 u_int16_t ip6a_rtalert; /* rtalert option value */
274
275 /*
276 * decapsulation history will be here.
277 * with IPsec it may not be accurate.
278 */
279};
280#endif
281
282#ifdef _KERNEL
283/* flags passed to ip6_output as last parameter */
284#define IPV6_UNSPECSRC 0x01 /* allow :: as the source address */
285#define IPV6_FORWARDING 0x02 /* most of IPv6 header exists */
286#define IPV6_MINMTU 0x04 /* use minimum MTU (IPV6_USE_MIN_MTU) */
287
288#define M_IP6_NEXTHOP M_PROTO2 /* explicit ip nexthop */
289
288#ifdef __NO_STRICT_ALIGNMENT
289#define IP6_HDR_ALIGNED_P(ip) 1
290#else
291#define IP6_HDR_ALIGNED_P(ip) ((((intptr_t) (ip)) & 3) == 0)
292#endif
293
294VNET_DECLARE(struct ip6stat, ip6stat); /* statistics */
295VNET_DECLARE(int, ip6_defhlim); /* default hop limit */
296VNET_DECLARE(int, ip6_defmcasthlim); /* default multicast hop limit */
297VNET_DECLARE(int, ip6_forwarding); /* act as router? */
298VNET_DECLARE(int, ip6_use_deprecated); /* allow deprecated addr as source */
299VNET_DECLARE(int, ip6_rr_prune); /* router renumbering prefix
300 * walk list every 5 sec. */
301VNET_DECLARE(int, ip6_mcast_pmtu); /* enable pMTU discovery for multicast? */
302VNET_DECLARE(int, ip6_v6only);
303#define V_ip6stat VNET(ip6stat)
304#define V_ip6_defhlim VNET(ip6_defhlim)
305#define V_ip6_defmcasthlim VNET(ip6_defmcasthlim)
306#define V_ip6_forwarding VNET(ip6_forwarding)
307#define V_ip6_use_deprecated VNET(ip6_use_deprecated)
308#define V_ip6_rr_prune VNET(ip6_rr_prune)
309#define V_ip6_mcast_pmtu VNET(ip6_mcast_pmtu)
310#define V_ip6_v6only VNET(ip6_v6only)
311
312VNET_DECLARE(struct socket *, ip6_mrouter); /* multicast routing daemon */
313VNET_DECLARE(int, ip6_sendredirects); /* send IP redirects when forwarding? */
314VNET_DECLARE(int, ip6_maxfragpackets); /* Maximum packets in reassembly
315 * queue */
316VNET_DECLARE(int, ip6_maxfrags); /* Maximum fragments in reassembly
317 * queue */
318VNET_DECLARE(int, ip6_accept_rtadv); /* Acts as a host not a router */
319VNET_DECLARE(int, ip6_no_radr); /* No defroute from RA */
320VNET_DECLARE(int, ip6_norbit_raif); /* Disable R-bit in NA on RA
321 * receiving IF. */
322VNET_DECLARE(int, ip6_rfc6204w3); /* Accept defroute from RA even when
323 forwarding enabled */
324VNET_DECLARE(int, ip6_keepfaith); /* Firewall Aided Internet Translator */
325VNET_DECLARE(int, ip6_log_interval);
326VNET_DECLARE(time_t, ip6_log_time);
327VNET_DECLARE(int, ip6_hdrnestlimit); /* upper limit of # of extension
328 * headers */
329VNET_DECLARE(int, ip6_dad_count); /* DupAddrDetectionTransmits */
330#define V_ip6_mrouter VNET(ip6_mrouter)
331#define V_ip6_sendredirects VNET(ip6_sendredirects)
332#define V_ip6_maxfragpackets VNET(ip6_maxfragpackets)
333#define V_ip6_maxfrags VNET(ip6_maxfrags)
334#define V_ip6_accept_rtadv VNET(ip6_accept_rtadv)
335#define V_ip6_no_radr VNET(ip6_no_radr)
336#define V_ip6_norbit_raif VNET(ip6_norbit_raif)
337#define V_ip6_rfc6204w3 VNET(ip6_rfc6204w3)
338#define V_ip6_keepfaith VNET(ip6_keepfaith)
339#define V_ip6_log_interval VNET(ip6_log_interval)
340#define V_ip6_log_time VNET(ip6_log_time)
341#define V_ip6_hdrnestlimit VNET(ip6_hdrnestlimit)
342#define V_ip6_dad_count VNET(ip6_dad_count)
343
344VNET_DECLARE(int, ip6_auto_flowlabel);
345VNET_DECLARE(int, ip6_auto_linklocal);
346#define V_ip6_auto_flowlabel VNET(ip6_auto_flowlabel)
347#define V_ip6_auto_linklocal VNET(ip6_auto_linklocal)
348
349VNET_DECLARE(int, ip6_use_tempaddr); /* Whether to use temporary addresses */
350VNET_DECLARE(int, ip6_prefer_tempaddr); /* Whether to prefer temporary
351 * addresses in the source address
352 * selection */
353#define V_ip6_use_tempaddr VNET(ip6_use_tempaddr)
354#define V_ip6_prefer_tempaddr VNET(ip6_prefer_tempaddr)
355
356VNET_DECLARE(int, ip6_use_defzone); /* Whether to use the default scope
357 * zone when unspecified */
358#define V_ip6_use_defzone VNET(ip6_use_defzone)
359
360VNET_DECLARE (struct pfil_head, inet6_pfil_hook); /* packet filter hooks */
361#define V_inet6_pfil_hook VNET(inet6_pfil_hook)
362#ifdef IPSTEALTH
363VNET_DECLARE(int, ip6stealth);
364#define V_ip6stealth VNET(ip6stealth)
365#endif
366
367extern struct pr_usrreqs rip6_usrreqs;
368struct sockopt;
369
370struct inpcb;
371
372int icmp6_ctloutput(struct socket *, struct sockopt *sopt);
373
374struct in6_ifaddr;
375void ip6_init(void);
376#ifdef VIMAGE
377void ip6_destroy(void);
378#endif
379int ip6proto_register(short);
380int ip6proto_unregister(short);
381
382void ip6_input(struct mbuf *);
383struct in6_ifaddr *ip6_getdstifaddr(struct mbuf *);
384void ip6_freepcbopts(struct ip6_pktopts *);
385
386int ip6_unknown_opt(u_int8_t *, struct mbuf *, int);
387char * ip6_get_prevhdr(struct mbuf *, int);
388int ip6_nexthdr(struct mbuf *, int, int, int *);
389int ip6_lasthdr(struct mbuf *, int, int, int *);
390
391#ifdef __notyet__
392struct ip6aux *ip6_findaux(struct mbuf *);
393#endif
394
395extern int (*ip6_mforward)(struct ip6_hdr *, struct ifnet *,
396 struct mbuf *);
397
398int ip6_process_hopopts(struct mbuf *, u_int8_t *, int, u_int32_t *,
399 u_int32_t *);
400struct mbuf **ip6_savecontrol_v4(struct inpcb *, struct mbuf *,
401 struct mbuf **, int *);
402void ip6_savecontrol(struct inpcb *, struct mbuf *, struct mbuf **);
403void ip6_notify_pmtu(struct inpcb *, struct sockaddr_in6 *,
404 u_int32_t *);
405int ip6_sysctl(int *, u_int, void *, size_t *, void *, size_t);
406
407void ip6_forward(struct mbuf *, int);
408
409void ip6_mloopback(struct ifnet *, struct mbuf *, struct sockaddr_in6 *);
410int ip6_output(struct mbuf *, struct ip6_pktopts *,
411 struct route_in6 *,
412 int,
413 struct ip6_moptions *, struct ifnet **,
414 struct inpcb *);
415int ip6_ctloutput(struct socket *, struct sockopt *);
416int ip6_raw_ctloutput(struct socket *, struct sockopt *);
417void ip6_initpktopts(struct ip6_pktopts *);
418int ip6_setpktopts(struct mbuf *, struct ip6_pktopts *,
419 struct ip6_pktopts *, struct ucred *, int);
420void ip6_clearpktopts(struct ip6_pktopts *, int);
421struct ip6_pktopts *ip6_copypktopts(struct ip6_pktopts *, int);
422int ip6_optlen(struct inpcb *);
423
424int route6_input(struct mbuf **, int *, int);
425
426void frag6_init(void);
427int frag6_input(struct mbuf **, int *, int);
428void frag6_slowtimo(void);
429void frag6_drain(void);
430
431void rip6_init(void);
432int rip6_input(struct mbuf **, int *, int);
433void rip6_ctlinput(int, struct sockaddr *, void *);
434int rip6_ctloutput(struct socket *, struct sockopt *);
435int rip6_output(struct mbuf *, ...);
436int rip6_usrreq(struct socket *,
437 int, struct mbuf *, struct mbuf *, struct mbuf *, struct thread *);
438
439int dest6_input(struct mbuf **, int *, int);
440int none_input(struct mbuf **, int *, int);
441
442int in6_selectsrc(struct sockaddr_in6 *, struct ip6_pktopts *,
443 struct inpcb *inp, struct route_in6 *, struct ucred *cred,
444 struct ifnet **, struct in6_addr *);
445int in6_selectroute(struct sockaddr_in6 *, struct ip6_pktopts *,
446 struct ip6_moptions *, struct route_in6 *, struct ifnet **,
447 struct rtentry **);
448int in6_selectroute_fib(struct sockaddr_in6 *, struct ip6_pktopts *,
449 struct ip6_moptions *, struct route_in6 *, struct ifnet **,
450 struct rtentry **, u_int);
451u_int32_t ip6_randomid(void);
452u_int32_t ip6_randomflowlabel(void);
453#endif /* _KERNEL */
454
455#endif /* !_NETINET6_IP6_VAR_H_ */
290#ifdef __NO_STRICT_ALIGNMENT
291#define IP6_HDR_ALIGNED_P(ip) 1
292#else
293#define IP6_HDR_ALIGNED_P(ip) ((((intptr_t) (ip)) & 3) == 0)
294#endif
295
296VNET_DECLARE(struct ip6stat, ip6stat); /* statistics */
297VNET_DECLARE(int, ip6_defhlim); /* default hop limit */
298VNET_DECLARE(int, ip6_defmcasthlim); /* default multicast hop limit */
299VNET_DECLARE(int, ip6_forwarding); /* act as router? */
300VNET_DECLARE(int, ip6_use_deprecated); /* allow deprecated addr as source */
301VNET_DECLARE(int, ip6_rr_prune); /* router renumbering prefix
302 * walk list every 5 sec. */
303VNET_DECLARE(int, ip6_mcast_pmtu); /* enable pMTU discovery for multicast? */
304VNET_DECLARE(int, ip6_v6only);
305#define V_ip6stat VNET(ip6stat)
306#define V_ip6_defhlim VNET(ip6_defhlim)
307#define V_ip6_defmcasthlim VNET(ip6_defmcasthlim)
308#define V_ip6_forwarding VNET(ip6_forwarding)
309#define V_ip6_use_deprecated VNET(ip6_use_deprecated)
310#define V_ip6_rr_prune VNET(ip6_rr_prune)
311#define V_ip6_mcast_pmtu VNET(ip6_mcast_pmtu)
312#define V_ip6_v6only VNET(ip6_v6only)
313
314VNET_DECLARE(struct socket *, ip6_mrouter); /* multicast routing daemon */
315VNET_DECLARE(int, ip6_sendredirects); /* send IP redirects when forwarding? */
316VNET_DECLARE(int, ip6_maxfragpackets); /* Maximum packets in reassembly
317 * queue */
318VNET_DECLARE(int, ip6_maxfrags); /* Maximum fragments in reassembly
319 * queue */
320VNET_DECLARE(int, ip6_accept_rtadv); /* Acts as a host not a router */
321VNET_DECLARE(int, ip6_no_radr); /* No defroute from RA */
322VNET_DECLARE(int, ip6_norbit_raif); /* Disable R-bit in NA on RA
323 * receiving IF. */
324VNET_DECLARE(int, ip6_rfc6204w3); /* Accept defroute from RA even when
325 forwarding enabled */
326VNET_DECLARE(int, ip6_keepfaith); /* Firewall Aided Internet Translator */
327VNET_DECLARE(int, ip6_log_interval);
328VNET_DECLARE(time_t, ip6_log_time);
329VNET_DECLARE(int, ip6_hdrnestlimit); /* upper limit of # of extension
330 * headers */
331VNET_DECLARE(int, ip6_dad_count); /* DupAddrDetectionTransmits */
332#define V_ip6_mrouter VNET(ip6_mrouter)
333#define V_ip6_sendredirects VNET(ip6_sendredirects)
334#define V_ip6_maxfragpackets VNET(ip6_maxfragpackets)
335#define V_ip6_maxfrags VNET(ip6_maxfrags)
336#define V_ip6_accept_rtadv VNET(ip6_accept_rtadv)
337#define V_ip6_no_radr VNET(ip6_no_radr)
338#define V_ip6_norbit_raif VNET(ip6_norbit_raif)
339#define V_ip6_rfc6204w3 VNET(ip6_rfc6204w3)
340#define V_ip6_keepfaith VNET(ip6_keepfaith)
341#define V_ip6_log_interval VNET(ip6_log_interval)
342#define V_ip6_log_time VNET(ip6_log_time)
343#define V_ip6_hdrnestlimit VNET(ip6_hdrnestlimit)
344#define V_ip6_dad_count VNET(ip6_dad_count)
345
346VNET_DECLARE(int, ip6_auto_flowlabel);
347VNET_DECLARE(int, ip6_auto_linklocal);
348#define V_ip6_auto_flowlabel VNET(ip6_auto_flowlabel)
349#define V_ip6_auto_linklocal VNET(ip6_auto_linklocal)
350
351VNET_DECLARE(int, ip6_use_tempaddr); /* Whether to use temporary addresses */
352VNET_DECLARE(int, ip6_prefer_tempaddr); /* Whether to prefer temporary
353 * addresses in the source address
354 * selection */
355#define V_ip6_use_tempaddr VNET(ip6_use_tempaddr)
356#define V_ip6_prefer_tempaddr VNET(ip6_prefer_tempaddr)
357
358VNET_DECLARE(int, ip6_use_defzone); /* Whether to use the default scope
359 * zone when unspecified */
360#define V_ip6_use_defzone VNET(ip6_use_defzone)
361
362VNET_DECLARE (struct pfil_head, inet6_pfil_hook); /* packet filter hooks */
363#define V_inet6_pfil_hook VNET(inet6_pfil_hook)
364#ifdef IPSTEALTH
365VNET_DECLARE(int, ip6stealth);
366#define V_ip6stealth VNET(ip6stealth)
367#endif
368
369extern struct pr_usrreqs rip6_usrreqs;
370struct sockopt;
371
372struct inpcb;
373
374int icmp6_ctloutput(struct socket *, struct sockopt *sopt);
375
376struct in6_ifaddr;
377void ip6_init(void);
378#ifdef VIMAGE
379void ip6_destroy(void);
380#endif
381int ip6proto_register(short);
382int ip6proto_unregister(short);
383
384void ip6_input(struct mbuf *);
385struct in6_ifaddr *ip6_getdstifaddr(struct mbuf *);
386void ip6_freepcbopts(struct ip6_pktopts *);
387
388int ip6_unknown_opt(u_int8_t *, struct mbuf *, int);
389char * ip6_get_prevhdr(struct mbuf *, int);
390int ip6_nexthdr(struct mbuf *, int, int, int *);
391int ip6_lasthdr(struct mbuf *, int, int, int *);
392
393#ifdef __notyet__
394struct ip6aux *ip6_findaux(struct mbuf *);
395#endif
396
397extern int (*ip6_mforward)(struct ip6_hdr *, struct ifnet *,
398 struct mbuf *);
399
400int ip6_process_hopopts(struct mbuf *, u_int8_t *, int, u_int32_t *,
401 u_int32_t *);
402struct mbuf **ip6_savecontrol_v4(struct inpcb *, struct mbuf *,
403 struct mbuf **, int *);
404void ip6_savecontrol(struct inpcb *, struct mbuf *, struct mbuf **);
405void ip6_notify_pmtu(struct inpcb *, struct sockaddr_in6 *,
406 u_int32_t *);
407int ip6_sysctl(int *, u_int, void *, size_t *, void *, size_t);
408
409void ip6_forward(struct mbuf *, int);
410
411void ip6_mloopback(struct ifnet *, struct mbuf *, struct sockaddr_in6 *);
412int ip6_output(struct mbuf *, struct ip6_pktopts *,
413 struct route_in6 *,
414 int,
415 struct ip6_moptions *, struct ifnet **,
416 struct inpcb *);
417int ip6_ctloutput(struct socket *, struct sockopt *);
418int ip6_raw_ctloutput(struct socket *, struct sockopt *);
419void ip6_initpktopts(struct ip6_pktopts *);
420int ip6_setpktopts(struct mbuf *, struct ip6_pktopts *,
421 struct ip6_pktopts *, struct ucred *, int);
422void ip6_clearpktopts(struct ip6_pktopts *, int);
423struct ip6_pktopts *ip6_copypktopts(struct ip6_pktopts *, int);
424int ip6_optlen(struct inpcb *);
425
426int route6_input(struct mbuf **, int *, int);
427
428void frag6_init(void);
429int frag6_input(struct mbuf **, int *, int);
430void frag6_slowtimo(void);
431void frag6_drain(void);
432
433void rip6_init(void);
434int rip6_input(struct mbuf **, int *, int);
435void rip6_ctlinput(int, struct sockaddr *, void *);
436int rip6_ctloutput(struct socket *, struct sockopt *);
437int rip6_output(struct mbuf *, ...);
438int rip6_usrreq(struct socket *,
439 int, struct mbuf *, struct mbuf *, struct mbuf *, struct thread *);
440
441int dest6_input(struct mbuf **, int *, int);
442int none_input(struct mbuf **, int *, int);
443
444int in6_selectsrc(struct sockaddr_in6 *, struct ip6_pktopts *,
445 struct inpcb *inp, struct route_in6 *, struct ucred *cred,
446 struct ifnet **, struct in6_addr *);
447int in6_selectroute(struct sockaddr_in6 *, struct ip6_pktopts *,
448 struct ip6_moptions *, struct route_in6 *, struct ifnet **,
449 struct rtentry **);
450int in6_selectroute_fib(struct sockaddr_in6 *, struct ip6_pktopts *,
451 struct ip6_moptions *, struct route_in6 *, struct ifnet **,
452 struct rtentry **, u_int);
453u_int32_t ip6_randomid(void);
454u_int32_t ip6_randomflowlabel(void);
455#endif /* _KERNEL */
456
457#endif /* !_NETINET6_IP6_VAR_H_ */