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comparison packages/net/tcpip/current/include/netinet6/nd6.h @ 97:ced4577552cd ecos-sw-2000-06-06

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Merge from eCos master repository on 2000-06-06-08:44:00-BST
author jlarmour
date Tue, 06 Jun 2000 08:39:36 +0000
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children e0c0827131d1
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96:b15c60e34c84 97:ced4577552cd
1 //==========================================================================
2 //
3 // include/netinet6.nd6.h
4 //
5 //
6 //
7 //==========================================================================
8 //####COPYRIGHTBEGIN####
9 //
10 // -------------------------------------------
11 // The contents of this file are subject to the Red Hat eCos Public License
12 // Version 1.1 (the "License"); you may not use this file except in
13 // compliance with the License. You may obtain a copy of the License at
14 // http://www.redhat.com/
15 //
16 // Software distributed under the License is distributed on an "AS IS"
17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
18 // License for the specific language governing rights and limitations under
19 // the License.
20 //
21 // The Original Code is eCos - Embedded Configurable Operating System,
22 // released September 30, 1998.
23 //
24 // The Initial Developer of the Original Code is Red Hat.
25 // Portions created by Red Hat are
26 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
27 // All Rights Reserved.
28 // -------------------------------------------
29 //
30 //####COPYRIGHTEND####
31 //####BSDCOPYRIGHTBEGIN####
32 //
33 // -------------------------------------------
34 //
35 // Portions of this software may have been derived from OpenBSD or other sources,
36 // and are covered by the appropriate copyright disclaimers included herein.
37 //
38 // -------------------------------------------
39 //
40 //####BSDCOPYRIGHTEND####
41 //==========================================================================
42 //#####DESCRIPTIONBEGIN####
43 //
44 // Author(s): gthomas
45 // Contributors: gthomas
46 // Date: 2000-01-10
47 // Purpose:
48 // Description:
49 //
50 //
51 //####DESCRIPTIONEND####
52 //
53 //==========================================================================
54
55 /* $OpenBSD: nd6.h,v 1.1 1999/12/08 06:50:23 itojun Exp $ */
56
57 /*
58 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
59 * All rights reserved.
60 *
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
63 * are met:
64 * 1. Redistributions of source code must retain the above copyright
65 * notice, this list of conditions and the following disclaimer.
66 * 2. Redistributions in binary form must reproduce the above copyright
67 * notice, this list of conditions and the following disclaimer in the
68 * documentation and/or other materials provided with the distribution.
69 * 3. Neither the name of the project nor the names of its contributors
70 * may be used to endorse or promote products derived from this software
71 * without specific prior written permission.
72 *
73 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
74 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
75 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
76 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
77 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
78 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
79 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
80 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
81 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
82 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
83 * SUCH DAMAGE.
84 */
85
86 #ifndef _NETINET6_ND6_H_
87 #define _NETINET6_ND6_H_
88
89 #include <sys/queue.h>
90
91 struct llinfo_nd6 {
92 struct llinfo_nd6 *ln_next;
93 struct llinfo_nd6 *ln_prev;
94 struct rtentry *ln_rt;
95 struct mbuf *ln_hold; /* last packet until resolved/timeout */
96 long ln_asked; /* number of queries already sent for this addr */
97 u_long ln_expire; /* lifetime for NDP state transition */
98 short ln_state; /* reachability state */
99 short ln_router; /* 2^0: ND6 router bit */
100 };
101
102 #define ND6_LLINFO_NOSTATE -2
103 #define ND6_LLINFO_WAITDELETE -1
104 #define ND6_LLINFO_INCOMPLETE 0
105 #define ND6_LLINFO_REACHABLE 1
106 #define ND6_LLINFO_STALE 2
107 #define ND6_LLINFO_DELAY 3
108 #define ND6_LLINFO_PROBE 4
109
110 struct nd_ifinfo {
111 u_int32_t linkmtu; /* LinkMTU */
112 u_int32_t maxmtu; /* Upper bound of LinkMTU */
113 u_int32_t basereachable; /* BaseReachableTime */
114 u_int32_t reachable; /* Reachable Time */
115 u_int32_t retrans; /* Retrans Timer */
116 int recalctm; /* BaseReacable re-calculation timer */
117 u_int8_t chlim; /* CurHopLimit */
118 u_int8_t receivedra;
119 };
120
121 struct in6_nbrinfo {
122 char ifname[IFNAMSIZ]; /* if name, e.g. "en0" */
123 struct in6_addr addr; /* IPv6 address of the neighbor */
124 long asked; /* number of queries already sent for this addr */
125 int isrouter; /* if it acts as a router */
126 int state; /* reachability state */
127 int expire; /* lifetime for NDP state transition */
128 };
129
130 #define DRLSTSIZ 10
131 #define PRLSTSIZ 10
132 struct in6_drlist {
133 char ifname[IFNAMSIZ];
134 struct {
135 struct in6_addr rtaddr;
136 u_char flags;
137 u_short rtlifetime;
138 u_long expire;
139 u_short if_index;
140 } defrouter[DRLSTSIZ];
141 };
142
143 struct in6_prlist {
144 char ifname[IFNAMSIZ];
145 struct {
146 struct in6_addr prefix;
147 struct prf_ra raflags;
148 u_char prefixlen;
149 u_long vltime;
150 u_long pltime;
151 u_long expire;
152 u_short if_index;
153 u_short advrtrs; /* number of advertisement routers */
154 struct in6_addr advrtr[DRLSTSIZ]; /* XXX: explicit limit */
155 } prefix[PRLSTSIZ];
156 };
157
158 struct in6_ndireq {
159 char ifname[IFNAMSIZ];
160 struct nd_ifinfo ndi;
161 };
162
163 /* protocol constants */
164 #define MAX_RTR_SOLICITATION_DELAY 1 /*1sec*/
165 #define RTR_SOLICITATION_INTERVAL 4 /*4sec*/
166 #define MAX_RTR_SOLICITATIONS 3
167
168 #define ND6_INFINITE_LIFETIME 0xffffffff
169
170 #ifdef _KERNEL
171 /* node constants */
172 #define MAX_REACHABLE_TIME 3600000 /* msec */
173 #define REACHABLE_TIME 30000 /* msec */
174 #define RETRANS_TIMER 1000 /* msec */
175 #define MIN_RANDOM_FACTOR 512 /* 1024 * 0.5 */
176 #define MAX_RANDOM_FACTOR 1536 /* 1024 * 1.5 */
177 #define ND_COMPUTE_RTIME(x) \
178 (((MIN_RANDOM_FACTOR * (x >> 10)) + (random() & \
179 ((MAX_RANDOM_FACTOR - MIN_RANDOM_FACTOR) * (x >> 10)))) /1000)
180
181 struct nd_defrouter {
182 LIST_ENTRY(nd_defrouter) dr_entry;
183 #define dr_next dr_entry.le_next
184 struct in6_addr rtaddr;
185 u_char flags;
186 u_short rtlifetime;
187 u_long expire;
188 struct ifnet *ifp;
189 };
190
191 struct nd_prefix {
192 struct ifnet *ndpr_ifp;
193 LIST_ENTRY(nd_prefix) ndpr_entry;
194 struct sockaddr_in6 ndpr_prefix; /* prefix */
195 struct in6_addr ndpr_mask; /* netmask derived from the prefix */
196 struct in6_addr ndpr_addr; /* address that is derived from the prefix */
197 u_int32_t ndpr_vltime; /* advertised valid lifetime */
198 u_int32_t ndpr_pltime; /* advertised preferred lifetime */
199 time_t ndpr_expire; /* expiration time of the prefix */
200 time_t ndpr_preferred; /* preferred time of the prefix */
201 struct prf_ra ndpr_flags;
202 /* list of routers that advertise the prefix: */
203 LIST_HEAD(pr_rtrhead, nd_pfxrouter) ndpr_advrtrs;
204 u_char ndpr_plen;
205 struct ndpr_stateflags {
206 /* if this prefix can be regarded as on-link */
207 u_char onlink : 1;
208 } ndpr_stateflags;
209 };
210
211 #define ndpr_next ndpr_entry.le_next
212
213 #define ndpr_raf ndpr_flags
214 #define ndpr_raf_onlink ndpr_flags.onlink
215 #define ndpr_raf_auto ndpr_flags.autonomous
216
217 #define ndpr_statef_onlink ndpr_stateflags.onlink
218 #define ndpr_statef_addmark ndpr_stateflags.addmark
219
220 /*
221 * We keep expired prefix for certain amount of time, for validation purposes.
222 * 1800s = MaxRtrAdvInterval
223 */
224 #define NDPR_KEEP_EXPIRED (1800 * 2)
225
226 /*
227 * Message format for use in obtaining information about prefixes
228 * from inet6 sysctl function
229 */
230 struct inet6_ndpr_msghdr {
231 u_short inpm_msglen; /* to skip over non-understood messages */
232 u_char inpm_version; /* future binary compatability */
233 u_char inpm_type; /* message type */
234 struct in6_addr inpm_prefix;
235 u_long prm_vltim;
236 u_long prm_pltime;
237 u_long prm_expire;
238 u_long prm_preferred;
239 struct in6_prflags prm_flags;
240 u_short prm_index; /* index for associated ifp */
241 u_char prm_plen; /* length of prefix in bits */
242 };
243
244 #define prm_raf_onlink prm_flags.prf_ra.onlink
245 #define prm_raf_auto prm_flags.prf_ra.autonomous
246
247 #define prm_statef_onlink prm_flags.prf_state.onlink
248
249 #define prm_rrf_decrvalid prm_flags.prf_rr.decrvalid
250 #define prm_rrf_decrprefd prm_flags.prf_rr.decrprefd
251
252 #define ifpr2ndpr(ifpr) ((struct nd_prefix *)(ifpr))
253 #define ndpr2ifpr(ndpr) ((struct ifprefix *)(ndpr))
254
255 struct nd_pfxrouter {
256 LIST_ENTRY(nd_pfxrouter) pfr_entry;
257 #define pfr_next pfr_entry.le_next
258 struct nd_defrouter *router;
259 };
260
261 LIST_HEAD(nd_drhead, nd_defrouter);
262 LIST_HEAD(nd_prhead, nd_prefix);
263
264 /* nd6.c */
265 extern int nd6_prune;
266 extern int nd6_delay;
267 extern int nd6_umaxtries;
268 extern int nd6_mmaxtries;
269 extern int nd6_useloopback;
270 extern int nd6_proxyall;
271 extern struct llinfo_nd6 llinfo_nd6;
272 extern struct nd_ifinfo *nd_ifinfo;
273 extern struct nd_drhead nd_defrouter;
274 extern struct nd_prhead nd_prefix;
275
276 union nd_opts {
277 struct nd_opt_hdr *nd_opt_array[9];
278 struct {
279 struct nd_opt_hdr *zero;
280 struct nd_opt_hdr *src_lladdr;
281 struct nd_opt_hdr *tgt_lladdr;
282 struct nd_opt_prefix_info *pi_beg;/* multiple opts, start */
283 struct nd_opt_rd_hdr *rh;
284 struct nd_opt_mtu *mtu;
285 struct nd_opt_hdr *search; /* multiple opts */
286 struct nd_opt_hdr *last; /* multiple opts */
287 int done;
288 struct nd_opt_prefix_info *pi_end;/* multiple opts, end */
289 } nd_opt_each;
290 };
291 #define nd_opts_src_lladdr nd_opt_each.src_lladdr
292 #define nd_opts_tgt_lladdr nd_opt_each.tgt_lladdr
293 #define nd_opts_pi nd_opt_each.pi_beg
294 #define nd_opts_pi_end nd_opt_each.pi_end
295 #define nd_opts_rh nd_opt_each.rh
296 #define nd_opts_mtu nd_opt_each.mtu
297 #define nd_opts_search nd_opt_each.search
298 #define nd_opts_last nd_opt_each.last
299 #define nd_opts_done nd_opt_each.done
300
301 /* XXX: need nd6_var.h?? */
302 /* nd6.c */
303 void nd6_init __P((void));
304 void nd6_ifattach __P((struct ifnet *));
305 int nd6_is_addr_neighbor __P((struct in6_addr *, struct ifnet *));
306 void nd6_option_init __P((void *, int, union nd_opts *));
307 struct nd_opt_hdr *nd6_option __P((union nd_opts *));
308 int nd6_options __P((union nd_opts *));
309 struct rtentry *nd6_lookup __P((struct in6_addr *, int, struct ifnet *));
310 void nd6_setmtu __P((struct ifnet *));
311 void nd6_timer __P((void *));
312 void nd6_free __P((struct rtentry *));
313 void nd6_nud_hint __P((struct rtentry *, struct in6_addr *));
314 int nd6_resolve __P((struct ifnet *, struct rtentry *,
315 struct mbuf *, struct sockaddr *, u_char *));
316 #if defined(__bsdi__) && _BSDI_VERSION >= 199802
317 void nd6_rtrequest __P((int, struct rtentry *, struct rt_addrinfo *));
318 void nd6_p2p_rtrequest __P((int, struct rtentry *, struct rt_addrinfo *));
319 #else
320 void nd6_rtrequest __P((int, struct rtentry *, struct sockaddr *));
321 void nd6_p2p_rtrequest __P((int, struct rtentry *, struct sockaddr *));
322 #endif
323 int nd6_ioctl __P((u_long, caddr_t, struct ifnet *));
324 struct rtentry *nd6_cache_lladdr __P((struct ifnet *, struct in6_addr *,
325 char *, int, int, int));
326 /* for test */
327 int nd6_output __P((struct ifnet *, struct mbuf *, struct sockaddr_in6 *,
328 struct rtentry *));
329 int nd6_storelladdr __P((struct ifnet *, struct rtentry *, struct mbuf *,
330 struct sockaddr *, u_char *));
331
332 /* nd6_nbr.c */
333 void nd6_na_input __P((struct mbuf *, int, int));
334 void nd6_na_output __P((struct ifnet *, struct in6_addr *,
335 struct in6_addr *, u_long, int));
336 void nd6_ns_input __P((struct mbuf *, int, int));
337 void nd6_ns_output __P((struct ifnet *, struct in6_addr *,
338 struct in6_addr *, struct llinfo_nd6 *, int));
339 caddr_t nd6_ifptomac __P((struct ifnet *));
340 void nd6_dad_start __P((struct ifaddr *, int *));
341 void nd6_dad_duplicated __P((struct ifaddr *));
342
343 /* nd6_rtr.c */
344 void nd6_rs_input __P((struct mbuf *, int, int));
345 void nd6_ra_input __P((struct mbuf *, int, int));
346 void prelist_del __P((struct nd_prefix *));
347 void defrouter_addreq __P((struct nd_defrouter *));
348 void defrouter_delreq __P((struct nd_defrouter *, int));
349 void defrtrlist_del __P((struct nd_defrouter *));
350 void prelist_remove __P((struct nd_prefix *));
351 int prelist_update __P((struct nd_prefix *, struct nd_defrouter *,
352 struct mbuf *));
353 struct nd_defrouter *defrouter_lookup __P((struct in6_addr *,
354 struct ifnet *));
355 int in6_ifdel __P((struct ifnet *, struct in6_addr *));
356 int in6_init_prefix_ltimes __P((struct nd_prefix *ndpr));
357 void rt6_flush __P((struct in6_addr *, struct ifnet *));
358
359 #endif /* _KERNEL */
360
361 #endif /* _NETINET6_ND6_H_ */