1/* $FreeBSD: head/sys/netinet6/nd6.h 85074 2001-10-17 18:07:05Z ru $ */
2/* $KAME: nd6.h,v 1.55 2001/04/27 15:09:49 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
44struct 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
73struct 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 followings 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
91struct 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
102struct 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
113struct 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
121struct 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_long vltime;
129 u_long pltime;
130 u_long 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
137struct 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
153struct 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
169struct in6_ndireq {
170 char ifname[IFNAMSIZ];
171 struct nd_ifinfo ndi;
172};
173
174struct 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
205TAILQ_HEAD(nd_drhead, nd_defrouter);
206struct nd_defrouter {
207 TAILQ_ENTRY(nd_defrouter) dr_entry;
208 struct in6_addr rtaddr;
209 u_char flags;
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
218struct 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 */
252struct 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
277struct nd_pfxrouter {
278 LIST_ENTRY(nd_pfxrouter) pfr_entry;
279#define pfr_next pfr_entry.le_next
280 struct nd_defrouter *router;
281};
282
283LIST_HEAD(nd_prhead, nd_prefix);
284
285/* nd6.c */
286extern int nd6_prune;
287extern int nd6_delay;
288extern int nd6_umaxtries;
289extern int nd6_mmaxtries;
290extern int nd6_useloopback;
291extern int nd6_maxnudhint;
292extern int nd6_gctimer;
293extern struct llinfo_nd6 llinfo_nd6;
294extern struct nd_ifinfo *nd_ifinfo;
295extern struct nd_drhead nd_defrouter;
296extern struct nd_prhead nd_prefix;
297extern int nd6_debug;
298
299#define nd6log(x) do { if (nd6_debug) log x; } while (0)
300
301extern struct callout nd6_timer_ch;
302
303/* nd6_rtr.c */
304extern int nd6_defifindex;
305extern int ip6_desync_factor; /* seconds */
306extern u_int32_t ip6_temp_preferred_lifetime; /* seconds */
307extern u_int32_t ip6_temp_valid_lifetime; /* seconds */
308extern int ip6_temp_regen_advance; /* seconds */
309
310union 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 */
342void nd6_init __P((void));
343void nd6_ifattach __P((struct ifnet *));
344int nd6_is_addr_neighbor __P((struct sockaddr_in6 *, struct ifnet *));
345void nd6_option_init __P((void *, int, union nd_opts *));
346struct nd_opt_hdr *nd6_option __P((union nd_opts *));
347int nd6_options __P((union nd_opts *));
348struct rtentry *nd6_lookup __P((struct in6_addr *, int, struct ifnet *));
349void nd6_setmtu __P((struct ifnet *));
350void nd6_timer __P((void *));
351void nd6_purge __P((struct ifnet *));
352struct llinfo_nd6 *nd6_free __P((struct rtentry *));
353void nd6_nud_hint __P((struct rtentry *, struct in6_addr *, int));
354int nd6_resolve __P((struct ifnet *, struct rtentry *,
355 struct mbuf *, struct sockaddr *, u_char *));
356void nd6_rtrequest __P((int, struct rtentry *, struct rt_addrinfo *));
357int nd6_ioctl __P((u_long, caddr_t, struct ifnet *));
358struct rtentry *nd6_cache_lladdr __P((struct ifnet *, struct in6_addr *,
359 char *, int, int, int));
360int nd6_output __P((struct ifnet *, struct ifnet *, struct mbuf *,
361 struct sockaddr_in6 *, struct rtentry *));
362int nd6_storelladdr __P((struct ifnet *, struct rtentry *, struct mbuf *,
363 struct sockaddr *, u_char *));
364int nd6_need_cache __P((struct ifnet *));
365
366/* nd6_nbr.c */
367void nd6_na_input __P((struct mbuf *, int, int));
368void nd6_na_output __P((struct ifnet *, const struct in6_addr *,
369 const struct in6_addr *, u_long, int, struct sockaddr *));
370void nd6_ns_input __P((struct mbuf *, int, int));
371void nd6_ns_output __P((struct ifnet *, const struct in6_addr *,
372 const struct in6_addr *, struct llinfo_nd6 *, int));
373caddr_t nd6_ifptomac __P((struct ifnet *));
374void nd6_dad_start __P((struct ifaddr *, int *));
375void nd6_dad_stop __P((struct ifaddr *));
376void nd6_dad_duplicated __P((struct ifaddr *));
377
378/* nd6_rtr.c */
379void nd6_rs_input __P((struct mbuf *, int, int));
380void nd6_ra_input __P((struct mbuf *, int, int));
381void prelist_del __P((struct nd_prefix *));
382void defrouter_addreq __P((struct nd_defrouter *));
383void defrouter_delreq __P((struct nd_defrouter *, int));
384void defrouter_select __P((void));
385void defrtrlist_del __P((struct nd_defrouter *));
386void prelist_remove __P((struct nd_prefix *));
387int prelist_update __P((struct nd_prefix *, struct nd_defrouter *,
388 struct mbuf *));
389int nd6_prelist_add __P((struct nd_prefix *, struct nd_defrouter *,
390 struct nd_prefix **));
391int nd6_prefix_onlink __P((struct nd_prefix *));
392int nd6_prefix_offlink __P((struct nd_prefix *));
393void pfxlist_onlink_check __P((void));
394struct nd_defrouter *defrouter_lookup __P((struct in6_addr *,
395 struct ifnet *));
396struct nd_prefix *nd6_prefix_lookup __P((struct nd_prefix *));
397int in6_init_prefix_ltimes __P((struct nd_prefix *ndpr));
398void rt6_flush __P((struct in6_addr *, struct ifnet *));
399int nd6_setdefaultiface __P((int));
400int in6_tmpifadd __P((const struct in6_ifaddr *, int));
401
402#endif /* _KERNEL */
403
404#endif /* _NETINET6_ND6_H_ */
2/* $KAME: nd6.h,v 1.55 2001/04/27 15:09:49 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
44struct 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
73struct 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 followings 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
91struct 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
102struct 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
113struct 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
121struct 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_long vltime;
129 u_long pltime;
130 u_long 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
137struct 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
153struct 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
169struct in6_ndireq {
170 char ifname[IFNAMSIZ];
171 struct nd_ifinfo ndi;
172};
173
174struct 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
205TAILQ_HEAD(nd_drhead, nd_defrouter);
206struct nd_defrouter {
207 TAILQ_ENTRY(nd_defrouter) dr_entry;
208 struct in6_addr rtaddr;
209 u_char flags;
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
218struct 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 */
252struct 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
277struct nd_pfxrouter {
278 LIST_ENTRY(nd_pfxrouter) pfr_entry;
279#define pfr_next pfr_entry.le_next
280 struct nd_defrouter *router;
281};
282
283LIST_HEAD(nd_prhead, nd_prefix);
284
285/* nd6.c */
286extern int nd6_prune;
287extern int nd6_delay;
288extern int nd6_umaxtries;
289extern int nd6_mmaxtries;
290extern int nd6_useloopback;
291extern int nd6_maxnudhint;
292extern int nd6_gctimer;
293extern struct llinfo_nd6 llinfo_nd6;
294extern struct nd_ifinfo *nd_ifinfo;
295extern struct nd_drhead nd_defrouter;
296extern struct nd_prhead nd_prefix;
297extern int nd6_debug;
298
299#define nd6log(x) do { if (nd6_debug) log x; } while (0)
300
301extern struct callout nd6_timer_ch;
302
303/* nd6_rtr.c */
304extern int nd6_defifindex;
305extern int ip6_desync_factor; /* seconds */
306extern u_int32_t ip6_temp_preferred_lifetime; /* seconds */
307extern u_int32_t ip6_temp_valid_lifetime; /* seconds */
308extern int ip6_temp_regen_advance; /* seconds */
309
310union 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 */
342void nd6_init __P((void));
343void nd6_ifattach __P((struct ifnet *));
344int nd6_is_addr_neighbor __P((struct sockaddr_in6 *, struct ifnet *));
345void nd6_option_init __P((void *, int, union nd_opts *));
346struct nd_opt_hdr *nd6_option __P((union nd_opts *));
347int nd6_options __P((union nd_opts *));
348struct rtentry *nd6_lookup __P((struct in6_addr *, int, struct ifnet *));
349void nd6_setmtu __P((struct ifnet *));
350void nd6_timer __P((void *));
351void nd6_purge __P((struct ifnet *));
352struct llinfo_nd6 *nd6_free __P((struct rtentry *));
353void nd6_nud_hint __P((struct rtentry *, struct in6_addr *, int));
354int nd6_resolve __P((struct ifnet *, struct rtentry *,
355 struct mbuf *, struct sockaddr *, u_char *));
356void nd6_rtrequest __P((int, struct rtentry *, struct rt_addrinfo *));
357int nd6_ioctl __P((u_long, caddr_t, struct ifnet *));
358struct rtentry *nd6_cache_lladdr __P((struct ifnet *, struct in6_addr *,
359 char *, int, int, int));
360int nd6_output __P((struct ifnet *, struct ifnet *, struct mbuf *,
361 struct sockaddr_in6 *, struct rtentry *));
362int nd6_storelladdr __P((struct ifnet *, struct rtentry *, struct mbuf *,
363 struct sockaddr *, u_char *));
364int nd6_need_cache __P((struct ifnet *));
365
366/* nd6_nbr.c */
367void nd6_na_input __P((struct mbuf *, int, int));
368void nd6_na_output __P((struct ifnet *, const struct in6_addr *,
369 const struct in6_addr *, u_long, int, struct sockaddr *));
370void nd6_ns_input __P((struct mbuf *, int, int));
371void nd6_ns_output __P((struct ifnet *, const struct in6_addr *,
372 const struct in6_addr *, struct llinfo_nd6 *, int));
373caddr_t nd6_ifptomac __P((struct ifnet *));
374void nd6_dad_start __P((struct ifaddr *, int *));
375void nd6_dad_stop __P((struct ifaddr *));
376void nd6_dad_duplicated __P((struct ifaddr *));
377
378/* nd6_rtr.c */
379void nd6_rs_input __P((struct mbuf *, int, int));
380void nd6_ra_input __P((struct mbuf *, int, int));
381void prelist_del __P((struct nd_prefix *));
382void defrouter_addreq __P((struct nd_defrouter *));
383void defrouter_delreq __P((struct nd_defrouter *, int));
384void defrouter_select __P((void));
385void defrtrlist_del __P((struct nd_defrouter *));
386void prelist_remove __P((struct nd_prefix *));
387int prelist_update __P((struct nd_prefix *, struct nd_defrouter *,
388 struct mbuf *));
389int nd6_prelist_add __P((struct nd_prefix *, struct nd_defrouter *,
390 struct nd_prefix **));
391int nd6_prefix_onlink __P((struct nd_prefix *));
392int nd6_prefix_offlink __P((struct nd_prefix *));
393void pfxlist_onlink_check __P((void));
394struct nd_defrouter *defrouter_lookup __P((struct in6_addr *,
395 struct ifnet *));
396struct nd_prefix *nd6_prefix_lookup __P((struct nd_prefix *));
397int in6_init_prefix_ltimes __P((struct nd_prefix *ndpr));
398void rt6_flush __P((struct in6_addr *, struct ifnet *));
399int nd6_setdefaultiface __P((int));
400int in6_tmpifadd __P((const struct in6_ifaddr *, int));
401
402#endif /* _KERNEL */
403
404#endif /* _NETINET6_ND6_H_ */