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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.18.0/] [newlib/] [libc/] [sys/] [linux/] [include/] [netinet6/] [ip6_var.h] - Blame information for rev 207

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1 207 jeremybenn
/*      $FreeBSD: src/sys/netinet6/ip6_var.h,v 1.8 2001/09/12 08:37:55 julian Exp $     */
2
/*      $KAME: ip6_var.h,v 1.62 2001/05/03 14:51:48 itojun 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
 
134
        /* Outgoing IF/address information */
135
        struct  in6_pktinfo *ip6po_pktinfo;
136
 
137
        struct  sockaddr *ip6po_nexthop; /* Next-hop address */
138
 
139
        struct  ip6_hbh *ip6po_hbh; /* Hop-by-Hop options header */
140
 
141
        /* Destination options header (before a routing header) */
142
        struct  ip6_dest *ip6po_dest1;
143
 
144
        /* Routing header related info. */
145
        struct  ip6po_rhinfo ip6po_rhinfo;
146
 
147
        /* Destination options header (after a routing header) */
148
        struct  ip6_dest *ip6po_dest2;
149
};
150
 
151
/*
152
 * Control options for incoming packets
153
 */
154
 
155
struct  ip6stat {
156
        u_quad_t ip6s_total;            /* total packets received */
157
        u_quad_t ip6s_tooshort;         /* packet too short */
158
        u_quad_t ip6s_toosmall;         /* not enough data */
159
        u_quad_t ip6s_fragments;        /* fragments received */
160
        u_quad_t ip6s_fragdropped;      /* frags dropped(dups, out of space) */
161
        u_quad_t ip6s_fragtimeout;      /* fragments timed out */
162
        u_quad_t ip6s_fragoverflow;     /* fragments that exceeded limit */
163
        u_quad_t ip6s_forward;          /* packets forwarded */
164
        u_quad_t ip6s_cantforward;      /* packets rcvd for unreachable dest */
165
        u_quad_t ip6s_redirectsent;     /* packets forwarded on same net */
166
        u_quad_t ip6s_delivered;        /* datagrams delivered to upper level*/
167
        u_quad_t ip6s_localout;         /* total ip packets generated here */
168
        u_quad_t ip6s_odropped;         /* lost packets due to nobufs, etc. */
169
        u_quad_t ip6s_reassembled;      /* total packets reassembled ok */
170
        u_quad_t ip6s_fragmented;       /* datagrams sucessfully fragmented */
171
        u_quad_t ip6s_ofragments;       /* output fragments created */
172
        u_quad_t ip6s_cantfrag;         /* don't fragment flag was set, etc. */
173
        u_quad_t ip6s_badoptions;       /* error in option processing */
174
        u_quad_t ip6s_noroute;          /* packets discarded due to no route */
175
        u_quad_t ip6s_badvers;          /* ip6 version != 6 */
176
        u_quad_t ip6s_rawout;           /* total raw ip packets generated */
177
        u_quad_t ip6s_badscope;         /* scope error */
178
        u_quad_t ip6s_notmember;        /* don't join this multicast group */
179
        u_quad_t ip6s_nxthist[256];     /* next header history */
180
        u_quad_t ip6s_m1;               /* one mbuf */
181
        u_quad_t ip6s_m2m[32];          /* two or more mbuf */
182
        u_quad_t ip6s_mext1;            /* one ext mbuf */
183
        u_quad_t ip6s_mext2m;           /* two or more ext mbuf */
184
        u_quad_t ip6s_exthdrtoolong;    /* ext hdr are not continuous */
185
        u_quad_t ip6s_nogif;            /* no match gif found */
186
        u_quad_t ip6s_toomanyhdr;       /* discarded due to too many headers */
187
 
188
        /*
189
         * statistics for improvement of the source address selection
190
         * algorithm:
191
         * XXX: hardcoded 16 = # of ip6 multicast scope types + 1
192
         */
193
        /* number of times that address selection fails */
194
        u_quad_t ip6s_sources_none;
195
        /* number of times that an address on the outgoing I/F is chosen */
196
        u_quad_t ip6s_sources_sameif[16];
197
        /* number of times that an address on a non-outgoing I/F is chosen */
198
        u_quad_t ip6s_sources_otherif[16];
199
        /*
200
         * number of times that an address that has the same scope
201
         * from the destination is chosen.
202
         */
203
        u_quad_t ip6s_sources_samescope[16];
204
        /*
205
         * number of times that an address that has a different scope
206
         * from the destination is chosen.
207
         */
208
        u_quad_t ip6s_sources_otherscope[16];
209
        /* number of times that an deprecated address is chosen */
210
        u_quad_t ip6s_sources_deprecated[16];
211
 
212
        u_quad_t ip6s_forward_cachehit;
213
        u_quad_t ip6s_forward_cachemiss;
214
};
215
 
216
#ifdef _KERNEL
217
/*
218
 * IPv6 onion peeling state.
219
 * it will be initialized when we come into ip6_input().
220
 * XXX do not make it a kitchen sink!
221
 */
222
struct ip6aux {
223
        u_int32_t ip6a_flags;
224
#define IP6A_SWAP       0x01            /* swapped home/care-of on packet */
225
#define IP6A_HASEEN     0x02            /* HA was present */
226
#define IP6A_BRUID      0x04            /* BR Unique Identifier was present */
227
#define IP6A_RTALERTSEEN 0x08           /* rtalert present */
228
 
229
        /* ip6.ip6_src */
230
        struct in6_addr ip6a_careof;    /* care-of address of the peer */
231
        struct in6_addr ip6a_home;      /* home address of the peer */
232
        u_int16_t       ip6a_bruid;     /* BR unique identifier */
233
 
234
        /* ip6.ip6_dst */
235
        struct in6_ifaddr *ip6a_dstia6; /* my ifaddr that matches ip6_dst */
236
 
237
        /* rtalert */
238
        u_int16_t ip6a_rtalert;         /* rtalert option value */
239
 
240
        /*
241
         * decapsulation history will be here.
242
         * with IPsec it may not be accurate.
243
         */
244
};
245
#endif
246
 
247
#ifdef _KERNEL
248
/* flags passed to ip6_output as last parameter */
249
#define IPV6_DADOUTPUT          0x01    /* DAD */
250
#define IPV6_FORWARDING         0x02    /* most of IPv6 header exists */
251
#define IPV6_MINMTU             0x04    /* use minimum MTU (IPV6_USE_MIN_MTU) */
252
 
253
extern struct   ip6stat ip6stat;        /* statistics */
254
extern u_int32_t ip6_id;                /* fragment identifier */
255
extern int      ip6_defhlim;            /* default hop limit */
256
extern int      ip6_defmcasthlim;       /* default multicast hop limit */
257
extern int      ip6_forwarding;         /* act as router? */
258
extern int      ip6_forward_srcrt;      /* forward src-routed? */
259
extern int      ip6_gif_hlim;           /* Hop limit for gif encap packet */
260
extern int      ip6_use_deprecated;     /* allow deprecated addr as source */
261
extern int      ip6_rr_prune;           /* router renumbering prefix
262
                                         * walk list every 5 sec.    */
263
#define ip6_mapped_addr_on      (!ip6_v6only)
264
extern int      ip6_v6only;
265
 
266
extern struct socket *ip6_mrouter;      /* multicast routing daemon */
267
extern int      ip6_sendredirects;      /* send IP redirects when forwarding? */
268
extern int      ip6_maxfragpackets; /* Maximum packets in reassembly queue */
269
extern int      ip6_sourcecheck;        /* Verify source interface */
270
extern int      ip6_sourcecheck_interval; /* Interval between log messages */
271
extern int      ip6_accept_rtadv;       /* Acts as a host not a router */
272
extern int      ip6_keepfaith;          /* Firewall Aided Internet Translator */
273
extern int      ip6_log_interval;
274
extern time_t   ip6_log_time;
275
extern int      ip6_hdrnestlimit; /* upper limit of # of extension headers */
276
extern int      ip6_dad_count;          /* DupAddrDetectionTransmits */
277
 
278
extern u_int32_t ip6_flow_seq;
279
extern int ip6_auto_flowlabel;
280
extern int ip6_auto_linklocal;
281
 
282
extern int   ip6_anonportmin;           /* minimum ephemeral port */
283
extern int   ip6_anonportmax;           /* maximum ephemeral port */
284
extern int   ip6_lowportmin;            /* minimum reserved port */
285
extern int   ip6_lowportmax;            /* maximum reserved port */
286
 
287
extern int      ip6_use_tempaddr; /* whether to use temporary addresses. */
288
 
289
extern struct   pr_usrreqs rip6_usrreqs;
290
struct sockopt;
291
 
292
struct inpcb;
293
 
294
int     icmp6_ctloutput __P((struct socket *, struct sockopt *sopt));
295
 
296
struct in6_ifaddr;
297
void    ip6_init __P((void));
298
void    ip6intr __P((void));
299
void    ip6_input __P((struct mbuf *));
300
struct in6_ifaddr *ip6_getdstifaddr __P((struct mbuf *));
301
void    ip6_freepcbopts __P((struct ip6_pktopts *));
302
void    ip6_freemoptions __P((struct ip6_moptions *));
303
int     ip6_unknown_opt __P((u_int8_t *, struct mbuf *, int));
304
char *  ip6_get_prevhdr __P((struct mbuf *, int));
305
int     ip6_nexthdr __P((struct mbuf *, int, int, int *));
306
int     ip6_lasthdr __P((struct mbuf *, int, int, int *));
307
 
308
struct mbuf *ip6_addaux __P((struct mbuf *));
309
struct mbuf *ip6_findaux __P((struct mbuf *));
310
void    ip6_delaux __P((struct mbuf *));
311
 
312
int     ip6_mforward __P((struct ip6_hdr *, struct ifnet *, struct mbuf *));
313
int     ip6_process_hopopts __P((struct mbuf *, u_int8_t *, int, u_int32_t *,
314
                                 u_int32_t *));
315
void    ip6_savecontrol __P((struct inpcb *, struct mbuf **, struct ip6_hdr *,
316
                             struct mbuf *));
317
void    ip6_notify_pmtu __P((struct inpcb *, struct sockaddr_in6 *,
318
                             u_int32_t *));
319
int     ip6_sysctl __P((int *, u_int, void *, size_t *, void *, size_t));
320
 
321
void    ip6_forward __P((struct mbuf *, int));
322
 
323
void    ip6_mloopback __P((struct ifnet *, struct mbuf *, struct sockaddr_in6 *));
324
int     ip6_output __P((struct mbuf *, struct ip6_pktopts *,
325
                        struct route_in6 *,
326
                        int,
327
                        struct ip6_moptions *, struct ifnet **));
328
int     ip6_ctloutput __P((struct socket *, struct sockopt *sopt));
329
void    init_ip6pktopts __P((struct ip6_pktopts *));
330
int     ip6_setpktoptions __P((struct mbuf *, struct ip6_pktopts *, int, int));
331
void    ip6_clearpktopts __P((struct ip6_pktopts *, int, int));
332
struct ip6_pktopts *ip6_copypktopts __P((struct ip6_pktopts *, int));
333
int     ip6_optlen __P((struct inpcb *));
334
 
335
int     route6_input __P((struct mbuf **, int *, int));
336
 
337
void    frag6_init __P((void));
338
int     frag6_input __P((struct mbuf **, int *, int));
339
void    frag6_slowtimo __P((void));
340
void    frag6_drain __P((void));
341
 
342
void    rip6_init __P((void));
343
int     rip6_input __P((struct mbuf **mp, int *offp, int proto));
344
void    rip6_ctlinput __P((int, struct sockaddr *, void *));
345
int     rip6_ctloutput __P((struct socket *so, struct sockopt *sopt));
346
int     rip6_output __P((struct mbuf *, ...));
347
int     rip6_usrreq __P((struct socket *,
348
            int, struct mbuf *, struct mbuf *, struct mbuf *, struct thread *));
349
 
350
int     dest6_input __P((struct mbuf **, int *, int));
351
int     none_input __P((struct mbuf **, int *, int));
352
#endif /* _KERNEL */
353
 
354
#endif /* !_NETINET6_IP6_VAR_H_ */

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