1 //==========================================================================
3 // include/netinet6.nd6.h
7 //==========================================================================
8 //####BSDCOPYRIGHTBEGIN####
10 // -------------------------------------------
12 // Portions of this software may have been derived from OpenBSD or other sources,
13 // and are covered by the appropriate copyright disclaimers included herein.
15 // -------------------------------------------
17 //####BSDCOPYRIGHTEND####
18 //==========================================================================
19 //#####DESCRIPTIONBEGIN####
22 // Contributors: gthomas
28 //####DESCRIPTIONEND####
30 //==========================================================================
32 /* $OpenBSD: nd6.h,v 1.1 1999/12/08 06:50:23 itojun Exp $ */
35 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
36 * All rights reserved.
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
41 * 1. Redistributions of source code must retain the above copyright
42 * notice, this list of conditions and the following disclaimer.
43 * 2. Redistributions in binary form must reproduce the above copyright
44 * notice, this list of conditions and the following disclaimer in the
45 * documentation and/or other materials provided with the distribution.
46 * 3. Neither the name of the project nor the names of its contributors
47 * may be used to endorse or promote products derived from this software
48 * without specific prior written permission.
50 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
51 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
52 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
53 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
54 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
55 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
56 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
57 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
58 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
59 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
63 #ifndef _NETINET6_ND6_H_
64 #define _NETINET6_ND6_H_
66 #include <sys/queue.h>
69 struct llinfo_nd6 *ln_next;
70 struct llinfo_nd6 *ln_prev;
71 struct rtentry *ln_rt;
72 struct mbuf *ln_hold; /* last packet until resolved/timeout */
73 long ln_asked; /* number of queries already sent for this addr */
74 u_long ln_expire; /* lifetime for NDP state transition */
75 short ln_state; /* reachability state */
76 short ln_router; /* 2^0: ND6 router bit */
79 #define ND6_LLINFO_NOSTATE -2
80 #define ND6_LLINFO_WAITDELETE -1
81 #define ND6_LLINFO_INCOMPLETE 0
82 #define ND6_LLINFO_REACHABLE 1
83 #define ND6_LLINFO_STALE 2
84 #define ND6_LLINFO_DELAY 3
85 #define ND6_LLINFO_PROBE 4
88 u_int32_t linkmtu; /* LinkMTU */
89 u_int32_t maxmtu; /* Upper bound of LinkMTU */
90 u_int32_t basereachable; /* BaseReachableTime */
91 u_int32_t reachable; /* Reachable Time */
92 u_int32_t retrans; /* Retrans Timer */
93 int recalctm; /* BaseReacable re-calculation timer */
94 u_int8_t chlim; /* CurHopLimit */
99 char ifname[IFNAMSIZ]; /* if name, e.g. "en0" */
100 struct in6_addr addr; /* IPv6 address of the neighbor */
101 long asked; /* number of queries already sent for this addr */
102 int isrouter; /* if it acts as a router */
103 int state; /* reachability state */
104 int expire; /* lifetime for NDP state transition */
110 char ifname[IFNAMSIZ];
112 struct in6_addr rtaddr;
117 } defrouter[DRLSTSIZ];
121 char ifname[IFNAMSIZ];
123 struct in6_addr prefix;
124 struct prf_ra raflags;
130 u_short advrtrs; /* number of advertisement routers */
131 struct in6_addr advrtr[DRLSTSIZ]; /* XXX: explicit limit */
136 char ifname[IFNAMSIZ];
137 struct nd_ifinfo ndi;
140 /* protocol constants */
141 #define MAX_RTR_SOLICITATION_DELAY 1 /*1sec*/
142 #define RTR_SOLICITATION_INTERVAL 4 /*4sec*/
143 #define MAX_RTR_SOLICITATIONS 3
145 #define ND6_INFINITE_LIFETIME 0xffffffff
149 #define MAX_REACHABLE_TIME 3600000 /* msec */
150 #define REACHABLE_TIME 30000 /* msec */
151 #define RETRANS_TIMER 1000 /* msec */
152 #define MIN_RANDOM_FACTOR 512 /* 1024 * 0.5 */
153 #define MAX_RANDOM_FACTOR 1536 /* 1024 * 1.5 */
154 #define ND_COMPUTE_RTIME(x) \
155 (((MIN_RANDOM_FACTOR * (x >> 10)) + (random() & \
156 ((MAX_RANDOM_FACTOR - MIN_RANDOM_FACTOR) * (x >> 10)))) /1000)
158 struct nd_defrouter {
159 LIST_ENTRY(nd_defrouter) dr_entry;
160 #define dr_next dr_entry.le_next
161 struct in6_addr rtaddr;
169 struct ifnet *ndpr_ifp;
170 LIST_ENTRY(nd_prefix) ndpr_entry;
171 struct sockaddr_in6 ndpr_prefix; /* prefix */
172 struct in6_addr ndpr_mask; /* netmask derived from the prefix */
173 struct in6_addr ndpr_addr; /* address that is derived from the prefix */
174 u_int32_t ndpr_vltime; /* advertised valid lifetime */
175 u_int32_t ndpr_pltime; /* advertised preferred lifetime */
176 time_t ndpr_expire; /* expiration time of the prefix */
177 time_t ndpr_preferred; /* preferred time of the prefix */
178 struct prf_ra ndpr_flags;
179 /* list of routers that advertise the prefix: */
180 LIST_HEAD(pr_rtrhead, nd_pfxrouter) ndpr_advrtrs;
182 struct ndpr_stateflags {
183 /* if this prefix can be regarded as on-link */
188 #define ndpr_next ndpr_entry.le_next
190 #define ndpr_raf ndpr_flags
191 #define ndpr_raf_onlink ndpr_flags.onlink
192 #define ndpr_raf_auto ndpr_flags.autonomous
194 #define ndpr_statef_onlink ndpr_stateflags.onlink
195 #define ndpr_statef_addmark ndpr_stateflags.addmark
198 * We keep expired prefix for certain amount of time, for validation purposes.
199 * 1800s = MaxRtrAdvInterval
201 #define NDPR_KEEP_EXPIRED (1800 * 2)
204 * Message format for use in obtaining information about prefixes
205 * from inet6 sysctl function
207 struct inet6_ndpr_msghdr {
208 u_short inpm_msglen; /* to skip over non-understood messages */
209 u_char inpm_version; /* future binary compatability */
210 u_char inpm_type; /* message type */
211 struct in6_addr inpm_prefix;
215 u_long prm_preferred;
216 struct in6_prflags prm_flags;
217 u_short prm_index; /* index for associated ifp */
218 u_char prm_plen; /* length of prefix in bits */
221 #define prm_raf_onlink prm_flags.prf_ra.onlink
222 #define prm_raf_auto prm_flags.prf_ra.autonomous
224 #define prm_statef_onlink prm_flags.prf_state.onlink
226 #define prm_rrf_decrvalid prm_flags.prf_rr.decrvalid
227 #define prm_rrf_decrprefd prm_flags.prf_rr.decrprefd
229 #define ifpr2ndpr(ifpr) ((struct nd_prefix *)(ifpr))
230 #define ndpr2ifpr(ndpr) ((struct ifprefix *)(ndpr))
232 struct nd_pfxrouter {
233 LIST_ENTRY(nd_pfxrouter) pfr_entry;
234 #define pfr_next pfr_entry.le_next
235 struct nd_defrouter *router;
238 LIST_HEAD(nd_drhead, nd_defrouter);
239 LIST_HEAD(nd_prhead, nd_prefix);
242 extern int nd6_prune;
243 extern int nd6_delay;
244 extern int nd6_umaxtries;
245 extern int nd6_mmaxtries;
246 extern int nd6_useloopback;
247 extern int nd6_proxyall;
248 extern struct llinfo_nd6 llinfo_nd6;
249 extern struct nd_ifinfo *nd_ifinfo;
250 extern struct nd_drhead nd_defrouter;
251 extern struct nd_prhead nd_prefix;
254 struct nd_opt_hdr *nd_opt_array[9];
256 struct nd_opt_hdr *zero;
257 struct nd_opt_hdr *src_lladdr;
258 struct nd_opt_hdr *tgt_lladdr;
259 struct nd_opt_prefix_info *pi_beg;/* multiple opts, start */
260 struct nd_opt_rd_hdr *rh;
261 struct nd_opt_mtu *mtu;
262 struct nd_opt_hdr *search; /* multiple opts */
263 struct nd_opt_hdr *last; /* multiple opts */
265 struct nd_opt_prefix_info *pi_end;/* multiple opts, end */
268 #define nd_opts_src_lladdr nd_opt_each.src_lladdr
269 #define nd_opts_tgt_lladdr nd_opt_each.tgt_lladdr
270 #define nd_opts_pi nd_opt_each.pi_beg
271 #define nd_opts_pi_end nd_opt_each.pi_end
272 #define nd_opts_rh nd_opt_each.rh
273 #define nd_opts_mtu nd_opt_each.mtu
274 #define nd_opts_search nd_opt_each.search
275 #define nd_opts_last nd_opt_each.last
276 #define nd_opts_done nd_opt_each.done
278 /* XXX: need nd6_var.h?? */
280 void nd6_init __P((void));
281 void nd6_ifattach __P((struct ifnet *));
282 int nd6_is_addr_neighbor __P((struct in6_addr *, struct ifnet *));
283 void nd6_option_init __P((void *, int, union nd_opts *));
284 struct nd_opt_hdr *nd6_option __P((union nd_opts *));
285 int nd6_options __P((union nd_opts *));
286 struct rtentry *nd6_lookup __P((struct in6_addr *, int, struct ifnet *));
287 void nd6_setmtu __P((struct ifnet *));
288 void nd6_timer __P((void *));
289 void nd6_free __P((struct rtentry *));
290 void nd6_nud_hint __P((struct rtentry *, struct in6_addr *));
291 int nd6_resolve __P((struct ifnet *, struct rtentry *,
292 struct mbuf *, struct sockaddr *, u_char *));
293 #if defined(__bsdi__) && _BSDI_VERSION >= 199802
294 void nd6_rtrequest __P((int, struct rtentry *, struct rt_addrinfo *));
295 void nd6_p2p_rtrequest __P((int, struct rtentry *, struct rt_addrinfo *));
297 void nd6_rtrequest __P((int, struct rtentry *, struct sockaddr *));
298 void nd6_p2p_rtrequest __P((int, struct rtentry *, struct sockaddr *));
300 int nd6_ioctl __P((u_long, caddr_t, struct ifnet *));
301 struct rtentry *nd6_cache_lladdr __P((struct ifnet *, struct in6_addr *,
302 char *, int, int, int));
304 int nd6_output __P((struct ifnet *, struct mbuf *, struct sockaddr_in6 *,
306 int nd6_storelladdr __P((struct ifnet *, struct rtentry *, struct mbuf *,
307 struct sockaddr *, u_char *));
310 void nd6_na_input __P((struct mbuf *, int, int));
311 void nd6_na_output __P((struct ifnet *, struct in6_addr *,
312 struct in6_addr *, u_long, int));
313 void nd6_ns_input __P((struct mbuf *, int, int));
314 void nd6_ns_output __P((struct ifnet *, struct in6_addr *,
315 struct in6_addr *, struct llinfo_nd6 *, int));
316 caddr_t nd6_ifptomac __P((struct ifnet *));
317 void nd6_dad_start __P((struct ifaddr *, int *));
318 void nd6_dad_duplicated __P((struct ifaddr *));
321 void nd6_rs_input __P((struct mbuf *, int, int));
322 void nd6_ra_input __P((struct mbuf *, int, int));
323 void prelist_del __P((struct nd_prefix *));
324 void defrouter_addreq __P((struct nd_defrouter *));
325 void defrouter_delreq __P((struct nd_defrouter *, int));
326 void defrtrlist_del __P((struct nd_defrouter *));
327 void prelist_remove __P((struct nd_prefix *));
328 int prelist_update __P((struct nd_prefix *, struct nd_defrouter *,
330 struct nd_defrouter *defrouter_lookup __P((struct in6_addr *,
332 int in6_ifdel __P((struct ifnet *, struct in6_addr *));
333 int in6_init_prefix_ltimes __P((struct nd_prefix *ndpr));
334 void rt6_flush __P((struct in6_addr *, struct ifnet *));
338 #endif /* _NETINET6_ND6_H_ */