1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
|
/* $OpenBSD: ip6_var.h,v 1.45 2013/03/14 11:18:37 mpi Exp $ */
/* $KAME: ip6_var.h,v 1.33 2000/06/11 14:59:20 jinmei Exp $ */
/*
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the project nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* Copyright (c) 1982, 1986, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)ip_var.h 8.1 (Berkeley) 6/10/93
*/
#ifndef _NETINET6_IP6_VAR_H_
#define _NETINET6_IP6_VAR_H_
/*
* IP6 reassembly queue structure. Each fragment
* being reassembled is attached to one of these structures.
*/
struct ip6q {
TAILQ_ENTRY(ip6q) ip6q_queue;
LIST_HEAD(ip6asfrag_list, ip6asfrag) ip6q_asfrag;
struct in6_addr ip6q_src, ip6q_dst;
int ip6q_unfrglen; /* len of unfragmentable part */
int ip6q_nfrag; /* # of fragments */
u_int32_t ip6q_ident; /* fragment identification */
u_int8_t ip6q_nxt; /* ip6f_nxt in first fragment */
u_int8_t ip6q_ttl; /* time to live in slowtimo units */
};
struct ip6asfrag {
LIST_ENTRY(ip6asfrag) ip6af_list;
struct mbuf *ip6af_m;
int ip6af_offset; /* offset in ip6af_m to next header */
int ip6af_frglen; /* fragmentable part length */
int ip6af_off; /* fragment offset */
u_int32_t ip6af_flow; /* ip header flow id */
u_int16_t ip6af_mff; /* more fragment bit in frag off */
};
#define IP6_REASS_MBUF(ip6af) ((ip6af)->ip6af_m)
struct ip6_moptions {
struct ifnet *im6o_multicast_ifp; /* ifp for outgoing multicasts */
u_char im6o_multicast_hlim; /* hoplimit for outgoing multicasts */
u_char im6o_multicast_loop; /* 1 >= hear sends if a member */
LIST_HEAD(, in6_multi_mship) im6o_memberships;
};
/*
* Control options for outgoing packets
*/
/* Routing header related info */
struct ip6po_rhinfo {
struct ip6_rthdr *ip6po_rhi_rthdr; /* Routing header */
struct route_in6 ip6po_rhi_route; /* Route to the 1st hop */
};
#define ip6po_rthdr ip6po_rhinfo.ip6po_rhi_rthdr
#define ip6po_route ip6po_rhinfo.ip6po_rhi_route
/* Nexthop related info */
struct ip6po_nhinfo {
struct sockaddr *ip6po_nhi_nexthop;
struct route_in6 ip6po_nhi_route;
};
#define ip6po_nexthop ip6po_nhinfo.ip6po_nhi_nexthop
#define ip6po_nextroute ip6po_nhinfo.ip6po_nhi_route
struct ip6_pktopts {
/* Hoplimit for outgoing packets */
int ip6po_hlim;
/* Outgoing IF/address information */
struct in6_pktinfo *ip6po_pktinfo;
/* Next-hop address information */
struct ip6po_nhinfo ip6po_nhinfo;
/* Hop-by-Hop options header */
struct ip6_hbh *ip6po_hbh;
/* Destination options header (before a routing header) */
struct ip6_dest *ip6po_dest1;
/* Routing header related info. */
struct ip6po_rhinfo ip6po_rhinfo;
/* Destination options header (after a routing header) */
struct ip6_dest *ip6po_dest2;
/* traffic class */
int ip6po_tclass;
/* fragment vs PMTU discovery policy */
int ip6po_minmtu;
#define IP6PO_MINMTU_MCASTONLY -1 /* default: send at min MTU for multicast */
#define IP6PO_MINMTU_DISABLE 0 /* always perform pmtu disc */
#define IP6PO_MINMTU_ALL 1 /* always send at min MTU */
int ip6po_flags;
#define IP6PO_DONTFRAG 0x04 /* disable fragmentation (IPV6_DONTFRAG) */
};
struct ip6stat {
u_int64_t ip6s_total; /* total packets received */
u_int64_t ip6s_tooshort; /* packet too short */
u_int64_t ip6s_toosmall; /* not enough data */
u_int64_t ip6s_fragments; /* fragments received */
u_int64_t ip6s_fragdropped; /* frags dropped(dups, out of space) */
u_int64_t ip6s_fragtimeout; /* fragments timed out */
u_int64_t ip6s_fragoverflow; /* fragments that exceeded limit */
u_int64_t ip6s_forward; /* packets forwarded */
u_int64_t ip6s_cantforward; /* packets rcvd for unreachable dest */
u_int64_t ip6s_redirectsent; /* packets forwarded on same net */
u_int64_t ip6s_delivered; /* datagrams delivered to upper level*/
u_int64_t ip6s_localout; /* total ip packets generated here */
u_int64_t ip6s_odropped; /* lost packets due to nobufs, etc. */
u_int64_t ip6s_reassembled; /* total packets reassembled ok */
u_int64_t ip6s_fragmented; /* datagrams successfully fragmented */
u_int64_t ip6s_ofragments; /* output fragments created */
u_int64_t ip6s_cantfrag; /* don't fragment flag was set, etc. */
u_int64_t ip6s_badoptions; /* error in option processing */
u_int64_t ip6s_noroute; /* packets discarded due to no route */
u_int64_t ip6s_badvers; /* ip6 version != 6 */
u_int64_t ip6s_rawout; /* total raw ip packets generated */
u_int64_t ip6s_badscope; /* scope error */
u_int64_t ip6s_notmember; /* don't join this multicast group */
u_int64_t ip6s_nxthist[256]; /* next header history */
u_int64_t ip6s_m1; /* one mbuf */
u_int64_t ip6s_m2m[32]; /* two or more mbuf */
u_int64_t ip6s_mext1; /* one ext mbuf */
u_int64_t ip6s_mext2m; /* two or more ext mbuf */
u_int64_t ip6s_nogif; /* no match gif found */
u_int64_t ip6s_toomanyhdr; /* discarded due to too many headers */
/*
* statistics for improvement of the source address selection
* algorithm:
* XXX: hardcoded 16 = # of ip6 multicast scope types + 1
*/
/* number of times that address selection fails */
u_int64_t ip6s_sources_none;
/* number of times that an address on the outgoing I/F is chosen */
u_int64_t ip6s_sources_sameif[16];
/* number of times that an address on a non-outgoing I/F is chosen */
u_int64_t ip6s_sources_otherif[16];
/*
* number of times that an address that has the same scope
* from the destination is chosen.
*/
u_int64_t ip6s_sources_samescope[16];
/*
* number of times that an address that has a different scope
* from the destination is chosen.
*/
u_int64_t ip6s_sources_otherscope[16];
/* number of times that an deprecated address is chosen */
u_int64_t ip6s_sources_deprecated[16];
u_int64_t ip6s_forward_cachehit;
u_int64_t ip6s_forward_cachemiss;
};
#ifdef _KERNEL
/* flags passed to ip6_output as last parameter */
#define IPV6_UNSPECSRC 0x01 /* allow :: as the source address */
#define IPV6_FORWARDING 0x02 /* most of IPv6 header exists */
#define IPV6_MINMTU 0x04 /* use minimum MTU (IPV6_USE_MIN_MTU) */
extern struct ip6stat ip6stat; /* statistics */
extern int ip6_defhlim; /* default hop limit */
extern int ip6_defmcasthlim; /* default multicast hop limit */
extern int ip6_forwarding; /* act as router? */
extern int ip6_mforwarding; /* act as multicast router? */
extern int ip6_multipath; /* use multipath routes */
extern int ip6_sendredirect; /* send ICMPv6 redirect? */
extern int ip6_use_deprecated; /* allow deprecated addr as source */
extern int ip6_rr_prune; /* router renumbering prefix
* walk list every 5 sec. */
extern int ip6_mcast_pmtu; /* path MTU discovery for multicast */
extern const int ip6_v6only;
extern int ip6_neighborgcthresh; /* Threshold # of NDP entries for GC */
extern int ip6_maxifprefixes; /* Max acceptable prefixes via RA per IF */
extern int ip6_maxifdefrouters; /* Max acceptable def routers via RA */
extern int ip6_maxdynroutes; /* Max # of routes created via redirect */
extern struct socket *ip6_mrouter; /* multicast routing daemon */
extern int ip6_sendredirects; /* send IP redirects when forwarding? */
extern int ip6_maxfragpackets; /* Maximum packets in reassembly queue */
extern int ip6_maxfrags; /* Maximum fragments in reassembly queue */
extern int ip6_accept_rtadv; /* Acts as a host not a router */
extern int ip6_log_interval;
extern time_t ip6_log_time;
extern int ip6_hdrnestlimit; /* upper limit of # of extension headers */
extern int ip6_dad_count; /* DupAddrDetectionTransmits */
extern int ip6_dad_pending; /* number of currently running DADs */
extern int ip6_auto_flowlabel;
extern int ip6_auto_linklocal;
struct in6pcb;
struct inpcb;
int icmp6_ctloutput(int, struct socket *, int, int, struct mbuf **);
void ip6_init(void);
void ip6intr(void);
void ip6_input(struct mbuf *);
void ip6_freepcbopts(struct ip6_pktopts *);
void ip6_freemoptions(struct ip6_moptions *);
int ip6_unknown_opt(u_int8_t *, struct mbuf *, int);
u_int8_t *ip6_get_prevhdr(struct mbuf *, int);
int ip6_nexthdr(struct mbuf *, int, int, int *);
int ip6_lasthdr(struct mbuf *, int, int, int *);
int ip6_mforward(struct ip6_hdr *, struct ifnet *, struct mbuf *);
int ip6_process_hopopts(struct mbuf *, u_int8_t *, int, u_int32_t *,
u_int32_t *);
void ip6_savecontrol(struct inpcb *, struct mbuf *, struct mbuf **);
int ip6_sysctl(int *, u_int, void *, size_t *, void *, size_t);
void ip6_forward(struct mbuf *, int);
void ip6_mloopback(struct ifnet *, struct mbuf *, struct sockaddr_in6 *);
int ip6_output(struct mbuf *, struct ip6_pktopts *, struct route_in6 *, int,
struct ip6_moptions *, struct ifnet **, struct inpcb *);
int ip6_fragment(struct mbuf *, int, u_char, u_long);
int ip6_ctloutput(int, struct socket *, int, int, struct mbuf **);
int ip6_raw_ctloutput(int, struct socket *, int, int, struct mbuf **);
void ip6_initpktopts(struct ip6_pktopts *);
int ip6_setpktopts(struct mbuf *, struct ip6_pktopts *,
struct ip6_pktopts *, int, int);
void ip6_clearpktopts(struct ip6_pktopts *, int);
void ip6_randomid_init(void);
u_int32_t ip6_randomid(void);
int route6_input(struct mbuf **, int *, int);
void frag6_init(void);
int frag6_input(struct mbuf **, int *, int);
int frag6_deletefraghdr(struct mbuf *, int);
void frag6_slowtimo(void);
void frag6_drain(void);
void rip6_init(void);
int rip6_input(struct mbuf **mp, int *offp, int proto);
void rip6_ctlinput(int, struct sockaddr *, void *);
int rip6_ctloutput(int, struct socket *, int, int, struct mbuf **);
int rip6_output(struct mbuf *, ...);
int rip6_usrreq(struct socket *,
int, struct mbuf *, struct mbuf *, struct mbuf *, struct proc *);
int rip6_sysctl(int *, u_int, void *, size_t *, void *, size_t);
int dest6_input(struct mbuf **, int *, int);
int none_input(struct mbuf **, int *, int);
struct in6_addr *in6_selectsrc(struct sockaddr_in6 *, struct ip6_pktopts *,
struct ip6_moptions *, struct route_in6 *, struct in6_addr *,
int *, u_int);
int in6_selectroute(struct sockaddr_in6 *, struct ip6_pktopts *,
struct ip6_moptions *, struct route_in6 *, struct ifnet **,
struct rtentry **, u_int rtableid);
u_int32_t ip6_randomflowlabel(void);
#endif /* _KERNEL */
#endif /* !_NETINET6_IP6_VAR_H_ */
|
