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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.18.0/] [newlib/] [libc/] [sys/] [linux/] [include/] [netinet6/] [nd6.h] - Blame information for rev 207

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1 207 jeremybenn
/*      $FreeBSD: src/sys/netinet6/nd6.h,v 1.10 2002/04/19 04:46:23 suz Exp $   */
2
/*      $KAME: nd6.h,v 1.76 2001/12/18 02:10:31 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
#ifndef _NETINET6_ND6_H_
34
#define _NETINET6_ND6_H_
35
 
36
/* see net/route.h, or net/if_inarp.h */
37
#ifndef RTF_ANNOUNCE
38
#define RTF_ANNOUNCE    RTF_PROTO2
39
#endif
40
 
41
#include <sys/queue.h>
42
#include <sys/callout.h>
43
 
44
struct  llinfo_nd6 {
45
        struct  llinfo_nd6 *ln_next;
46
        struct  llinfo_nd6 *ln_prev;
47
        struct  rtentry *ln_rt;
48
        struct  mbuf *ln_hold;  /* last packet until resolved/timeout */
49
        long    ln_asked;       /* number of queries already sent for this addr */
50
        u_long  ln_expire;      /* lifetime for NDP state transition */
51
        short   ln_state;       /* reachability state */
52
        short   ln_router;      /* 2^0: ND6 router bit */
53
        int     ln_byhint;      /* # of times we made it reachable by UL hint */
54
};
55
 
56
#define ND6_LLINFO_NOSTATE      -2
57
/*
58
 * We don't need the WAITDELETE state any more, but we keep the definition
59
 * in a comment line instead of removing it. This is necessary to avoid
60
 * unintentionally reusing the value for another purpose, which might
61
 * affect backward compatibility with old applications.
62
 * (20000711 jinmei@kame.net)
63
 */
64
/* #define ND6_LLINFO_WAITDELETE        -1 */
65
#define ND6_LLINFO_INCOMPLETE   0
66
#define ND6_LLINFO_REACHABLE    1
67
#define ND6_LLINFO_STALE        2
68
#define ND6_LLINFO_DELAY        3
69
#define ND6_LLINFO_PROBE        4
70
 
71
#define ND6_IS_LLINFO_PROBREACH(n) ((n)->ln_state > ND6_LLINFO_INCOMPLETE)
72
 
73
struct nd_ifinfo {
74
        u_int32_t linkmtu;              /* LinkMTU */
75
        u_int32_t maxmtu;               /* Upper bound of LinkMTU */
76
        u_int32_t basereachable;        /* BaseReachableTime */
77
        u_int32_t reachable;            /* Reachable Time */
78
        u_int32_t retrans;              /* Retrans Timer */
79
        u_int32_t flags;                /* Flags */
80
        int recalctm;                   /* BaseReacable re-calculation timer */
81
        u_int8_t chlim;                 /* CurHopLimit */
82
        u_int8_t receivedra;
83
        /* the following 3 members are for privacy extension for addrconf */
84
        u_int8_t randomseed0[8]; /* upper 64 bits of MD5 digest */
85
        u_int8_t randomseed1[8]; /* lower 64 bits (usually the EUI64 IFID) */
86
        u_int8_t randomid[8];   /* current random ID */
87
};
88
 
89
#define ND6_IFF_PERFORMNUD      0x1
90
 
91
struct in6_nbrinfo {
92
        char ifname[IFNAMSIZ];  /* if name, e.g. "en0" */
93
        struct in6_addr addr;   /* IPv6 address of the neighbor */
94
        long    asked;          /* number of queries already sent for this addr */
95
        int     isrouter;       /* if it acts as a router */
96
        int     state;          /* reachability state */
97
        int     expire;         /* lifetime for NDP state transition */
98
};
99
 
100
#define DRLSTSIZ 10
101
#define PRLSTSIZ 10
102
struct  in6_drlist {
103
        char ifname[IFNAMSIZ];
104
        struct {
105
                struct  in6_addr rtaddr;
106
                u_char  flags;
107
                u_short rtlifetime;
108
                u_long  expire;
109
                u_short if_index;
110
        } defrouter[DRLSTSIZ];
111
};
112
 
113
struct  in6_defrouter {
114
        struct  sockaddr_in6 rtaddr;
115
        u_char  flags;
116
        u_short rtlifetime;
117
        u_long  expire;
118
        u_short if_index;
119
};
120
 
121
struct  in6_prlist {
122
        char ifname[IFNAMSIZ];
123
        struct {
124
                struct  in6_addr prefix;
125
                struct prf_ra raflags;
126
                u_char  prefixlen;
127
                u_char  origin;
128
                u_int32_t vltime;
129
                u_int32_t pltime;
130
                time_t expire;
131
                u_short if_index;
132
                u_short advrtrs; /* number of advertisement routers */
133
                struct  in6_addr advrtr[DRLSTSIZ]; /* XXX: explicit limit */
134
        } prefix[PRLSTSIZ];
135
};
136
 
137
struct in6_prefix {
138
        struct  sockaddr_in6 prefix;
139
        struct prf_ra raflags;
140
        u_char  prefixlen;
141
        u_char  origin;
142
        u_long  vltime;
143
        u_long  pltime;
144
        u_long  expire;
145
        u_int32_t flags;
146
        int refcnt;
147
        u_short if_index;
148
        u_short advrtrs; /* number of advertisement routers */
149
        /* struct sockaddr_in6 advrtr[] */
150
};
151
 
152
#ifdef _KERNEL
153
struct  in6_ondireq {
154
        char ifname[IFNAMSIZ];
155
        struct {
156
                u_int32_t linkmtu;      /* LinkMTU */
157
                u_int32_t maxmtu;       /* Upper bound of LinkMTU */
158
                u_int32_t basereachable; /* BaseReachableTime */
159
                u_int32_t reachable;    /* Reachable Time */
160
                u_int32_t retrans;      /* Retrans Timer */
161
                u_int32_t flags;        /* Flags */
162
                int recalctm;           /* BaseReacable re-calculation timer */
163
                u_int8_t chlim;         /* CurHopLimit */
164
                u_int8_t receivedra;
165
        } ndi;
166
};
167
#endif
168
 
169
struct  in6_ndireq {
170
        char ifname[IFNAMSIZ];
171
        struct nd_ifinfo ndi;
172
};
173
 
174
struct  in6_ndifreq {
175
        char ifname[IFNAMSIZ];
176
        u_long ifindex;
177
};
178
 
179
/* Prefix status */
180
#define NDPRF_ONLINK            0x1
181
#define NDPRF_DETACHED          0x2
182
 
183
/* protocol constants */
184
#define MAX_RTR_SOLICITATION_DELAY      1       /* 1sec */
185
#define RTR_SOLICITATION_INTERVAL       4       /* 4sec */
186
#define MAX_RTR_SOLICITATIONS           3
187
 
188
#define ND6_INFINITE_LIFETIME           0xffffffff
189
 
190
#ifdef _KERNEL
191
/* node constants */
192
#define MAX_REACHABLE_TIME              3600000 /* msec */
193
#define REACHABLE_TIME                  30000   /* msec */
194
#define RETRANS_TIMER                   1000    /* msec */
195
#define MIN_RANDOM_FACTOR               512     /* 1024 * 0.5 */
196
#define MAX_RANDOM_FACTOR               1536    /* 1024 * 1.5 */
197
#define DEF_TEMP_VALID_LIFETIME         604800  /* 1 week */
198
#define DEF_TEMP_PREFERRED_LIFETIME     86400   /* 1 day */
199
#define TEMPADDR_REGEN_ADVANCE          5       /* sec */
200
#define MAX_TEMP_DESYNC_FACTOR          600     /* 10 min */
201
#define ND_COMPUTE_RTIME(x) \
202
                (((MIN_RANDOM_FACTOR * (x >> 10)) + (random() & \
203
                ((MAX_RANDOM_FACTOR - MIN_RANDOM_FACTOR) * (x >> 10)))) /1000)
204
 
205
TAILQ_HEAD(nd_drhead, nd_defrouter);
206
struct  nd_defrouter {
207
        TAILQ_ENTRY(nd_defrouter) dr_entry;
208
        struct  in6_addr rtaddr;
209
        u_char  flags;          /* flags on RA message */
210
        u_short rtlifetime;
211
        u_long  expire;
212
        u_long  advint;         /* Mobile IPv6 addition (milliseconds) */
213
        u_long  advint_expire;  /* Mobile IPv6 addition */
214
        int     advints_lost;   /* Mobile IPv6 addition */
215
        struct  ifnet *ifp;
216
};
217
 
218
struct nd_prefix {
219
        struct ifnet *ndpr_ifp;
220
        LIST_ENTRY(nd_prefix) ndpr_entry;
221
        struct sockaddr_in6 ndpr_prefix;        /* prefix */
222
        struct in6_addr ndpr_mask; /* netmask derived from the prefix */
223
        struct in6_addr ndpr_addr; /* address that is derived from the prefix */
224
        u_int32_t ndpr_vltime;  /* advertised valid lifetime */
225
        u_int32_t ndpr_pltime;  /* advertised preferred lifetime */
226
        time_t ndpr_expire;     /* expiration time of the prefix */
227
        time_t ndpr_preferred;  /* preferred time of the prefix */
228
        struct prf_ra ndpr_flags;
229
        u_int32_t ndpr_stateflags; /* actual state flags */
230
        /* list of routers that advertise the prefix: */
231
        LIST_HEAD(pr_rtrhead, nd_pfxrouter) ndpr_advrtrs;
232
        u_char  ndpr_plen;
233
        int     ndpr_refcnt;    /* reference couter from addresses */
234
};
235
 
236
#define ndpr_next               ndpr_entry.le_next
237
 
238
#define ndpr_raf                ndpr_flags
239
#define ndpr_raf_onlink         ndpr_flags.onlink
240
#define ndpr_raf_auto           ndpr_flags.autonomous
241
 
242
/*
243
 * We keep expired prefix for certain amount of time, for validation purposes.
244
 * 1800s = MaxRtrAdvInterval
245
 */
246
#define NDPR_KEEP_EXPIRED       (1800 * 2)
247
 
248
/*
249
 * Message format for use in obtaining information about prefixes
250
 * from inet6 sysctl function
251
 */
252
struct inet6_ndpr_msghdr {
253
        u_short inpm_msglen;    /* to skip over non-understood messages */
254
        u_char  inpm_version;   /* future binary compatibility */
255
        u_char  inpm_type;      /* message type */
256
        struct in6_addr inpm_prefix;
257
        u_long  prm_vltim;
258
        u_long  prm_pltime;
259
        u_long  prm_expire;
260
        u_long  prm_preferred;
261
        struct in6_prflags prm_flags;
262
        u_short prm_index;      /* index for associated ifp */
263
        u_char  prm_plen;       /* length of prefix in bits */
264
};
265
 
266
#define prm_raf_onlink          prm_flags.prf_ra.onlink
267
#define prm_raf_auto            prm_flags.prf_ra.autonomous
268
 
269
#define prm_statef_onlink       prm_flags.prf_state.onlink
270
 
271
#define prm_rrf_decrvalid       prm_flags.prf_rr.decrvalid
272
#define prm_rrf_decrprefd       prm_flags.prf_rr.decrprefd
273
 
274
#define ifpr2ndpr(ifpr) ((struct nd_prefix *)(ifpr))
275
#define ndpr2ifpr(ndpr) ((struct ifprefix *)(ndpr))
276
 
277
struct nd_pfxrouter {
278
        LIST_ENTRY(nd_pfxrouter) pfr_entry;
279
#define pfr_next pfr_entry.le_next
280
        struct nd_defrouter *router;
281
};
282
 
283
LIST_HEAD(nd_prhead, nd_prefix);
284
 
285
/* nd6.c */
286
extern int nd6_prune;
287
extern int nd6_delay;
288
extern int nd6_umaxtries;
289
extern int nd6_mmaxtries;
290
extern int nd6_useloopback;
291
extern int nd6_maxnudhint;
292
extern int nd6_gctimer;
293
extern struct llinfo_nd6 llinfo_nd6;
294
extern struct nd_ifinfo *nd_ifinfo;
295
extern struct nd_drhead nd_defrouter;
296
extern struct nd_prhead nd_prefix;
297
extern int nd6_debug;
298
 
299
#define nd6log(x)       do { if (nd6_debug) log x; } while (0)
300
 
301
extern struct callout nd6_timer_ch;
302
 
303
/* nd6_rtr.c */
304
extern int nd6_defifindex;
305
extern int ip6_desync_factor;   /* seconds */
306
extern u_int32_t ip6_temp_preferred_lifetime; /* seconds */
307
extern u_int32_t ip6_temp_valid_lifetime; /* seconds */
308
extern int ip6_temp_regen_advance; /* seconds */
309
 
310
union nd_opts {
311
        struct nd_opt_hdr *nd_opt_array[9];     /* max = home agent info */
312
        struct {
313
                struct nd_opt_hdr *zero;
314
                struct nd_opt_hdr *src_lladdr;
315
                struct nd_opt_hdr *tgt_lladdr;
316
                struct nd_opt_prefix_info *pi_beg; /* multiple opts, start */
317
                struct nd_opt_rd_hdr *rh;
318
                struct nd_opt_mtu *mtu;
319
                struct nd_opt_hdr *six;
320
                struct nd_opt_advint *adv;
321
                struct nd_opt_hai *hai;
322
                struct nd_opt_hdr *search;      /* multiple opts */
323
                struct nd_opt_hdr *last;        /* multiple opts */
324
                int done;
325
                struct nd_opt_prefix_info *pi_end;/* multiple opts, end */
326
        } nd_opt_each;
327
};
328
#define nd_opts_src_lladdr      nd_opt_each.src_lladdr
329
#define nd_opts_tgt_lladdr      nd_opt_each.tgt_lladdr
330
#define nd_opts_pi              nd_opt_each.pi_beg
331
#define nd_opts_pi_end          nd_opt_each.pi_end
332
#define nd_opts_rh              nd_opt_each.rh
333
#define nd_opts_mtu             nd_opt_each.mtu
334
#define nd_opts_adv             nd_opt_each.adv
335
#define nd_opts_hai             nd_opt_each.hai
336
#define nd_opts_search          nd_opt_each.search
337
#define nd_opts_last            nd_opt_each.last
338
#define nd_opts_done            nd_opt_each.done
339
 
340
/* XXX: need nd6_var.h?? */
341
/* nd6.c */
342
void nd6_init __P((void));
343
void nd6_ifattach __P((struct ifnet *));
344
int nd6_is_addr_neighbor __P((struct sockaddr_in6 *, struct ifnet *));
345
void nd6_option_init __P((void *, int, union nd_opts *));
346
struct nd_opt_hdr *nd6_option __P((union nd_opts *));
347
int nd6_options __P((union nd_opts *));
348
struct  rtentry *nd6_lookup __P((struct in6_addr *, int, struct ifnet *));
349
void nd6_setmtu __P((struct ifnet *));
350
void nd6_timer __P((void *));
351
void nd6_purge __P((struct ifnet *));
352
struct llinfo_nd6 *nd6_free __P((struct rtentry *));
353
void nd6_nud_hint __P((struct rtentry *, struct in6_addr *, int));
354
int nd6_resolve __P((struct ifnet *, struct rtentry *,
355
                     struct mbuf *, struct sockaddr *, u_char *));
356
void nd6_rtrequest __P((int, struct rtentry *, struct rt_addrinfo *));
357
int nd6_ioctl __P((u_long, caddr_t, struct ifnet *));
358
struct rtentry *nd6_cache_lladdr __P((struct ifnet *, struct in6_addr *,
359
        char *, int, int, int));
360
int nd6_output __P((struct ifnet *, struct ifnet *, struct mbuf *,
361
                    struct sockaddr_in6 *, struct rtentry *));
362
int nd6_storelladdr __P((struct ifnet *, struct rtentry *, struct mbuf *,
363
                         struct sockaddr *, u_char *));
364
int nd6_need_cache __P((struct ifnet *));
365
 
366
/* nd6_nbr.c */
367
void nd6_na_input __P((struct mbuf *, int, int));
368
void nd6_na_output __P((struct ifnet *, const struct in6_addr *,
369
        const struct in6_addr *, u_long, int, struct sockaddr *));
370
void nd6_ns_input __P((struct mbuf *, int, int));
371
void nd6_ns_output __P((struct ifnet *, const struct in6_addr *,
372
        const struct in6_addr *, struct llinfo_nd6 *, int));
373
caddr_t nd6_ifptomac __P((struct ifnet *));
374
void nd6_dad_start __P((struct ifaddr *, int *));
375
void nd6_dad_stop __P((struct ifaddr *));
376
void nd6_dad_duplicated __P((struct ifaddr *));
377
 
378
/* nd6_rtr.c */
379
void nd6_rs_input __P((struct mbuf *, int, int));
380
void nd6_ra_input __P((struct mbuf *, int, int));
381
void prelist_del __P((struct nd_prefix *));
382
void defrouter_addreq __P((struct nd_defrouter *));
383
void defrouter_delreq __P((struct nd_defrouter *, int));
384
void defrouter_select __P((void));
385
void defrtrlist_del __P((struct nd_defrouter *));
386
void prelist_remove __P((struct nd_prefix *));
387
int prelist_update __P((struct nd_prefix *, struct nd_defrouter *,
388
                        struct mbuf *));
389
int nd6_prelist_add __P((struct nd_prefix *, struct nd_defrouter *,
390
                         struct nd_prefix **));
391
int nd6_prefix_onlink __P((struct nd_prefix *));
392
int nd6_prefix_offlink __P((struct nd_prefix *));
393
void pfxlist_onlink_check __P((void));
394
struct nd_defrouter *defrouter_lookup __P((struct in6_addr *,
395
                                           struct ifnet *));
396
struct nd_prefix *nd6_prefix_lookup __P((struct nd_prefix *));
397
int in6_init_prefix_ltimes __P((struct nd_prefix *ndpr));
398
void rt6_flush __P((struct in6_addr *, struct ifnet *));
399
int nd6_setdefaultiface __P((int));
400
int in6_tmpifadd __P((const struct in6_ifaddr *, int));
401
 
402
#endif /* _KERNEL */
403
 
404
#endif /* _NETINET6_ND6_H_ */

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