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1 | /* $KAME: rtadvd.h,v 1.16 2001/04/10 15:08:31 suz Exp $ */ | |
2 | ||
3 | /* | |
4 | * Copyright (C) 1998 WIDE Project. | |
5 | * All rights reserved. | |
6 | * | |
7 | * Redistribution and use in source and binary forms, with or without | |
8 | * modification, are permitted provided that the following conditions | |
9 | * are met: | |
10 | * 1. Redistributions of source code must retain the above copyright | |
11 | * notice, this list of conditions and the following disclaimer. | |
12 | * 2. Redistributions in binary form must reproduce the above copyright | |
13 | * notice, this list of conditions and the following disclaimer in the | |
14 | * documentation and/or other materials provided with the distribution. | |
15 | * 3. Neither the name of the project nor the names of its contributors | |
16 | * may be used to endorse or promote products derived from this software | |
17 | * without specific prior written permission. | |
18 | * | |
19 | * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND | |
20 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE | |
23 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
25 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
26 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
27 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
28 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
29 | * SUCH DAMAGE. | |
30 | * | |
31 | * $FreeBSD: src/usr.sbin/rtadvd/rtadvd.h,v 1.1.2.2 2001/07/03 11:02:14 ume Exp $ | |
32 | */ | |
33 | ||
34 | #define ALLNODES "ff02::1" | |
35 | #define ALLROUTERS_LINK "ff02::2" | |
36 | #define ALLROUTERS_SITE "ff05::2" | |
37 | #define ANY "::" | |
38 | #define RTSOLLEN 8 | |
39 | ||
40 | /* protocol constants and default values */ | |
41 | #define DEF_MAXRTRADVINTERVAL 600 | |
42 | #define DEF_ADVLINKMTU 0 | |
43 | #define DEF_ADVREACHABLETIME 0 | |
44 | #define DEF_ADVRETRANSTIMER 0 | |
45 | #define DEF_ADVCURHOPLIMIT 64 | |
46 | #define DEF_ADVVALIDLIFETIME 2592000 | |
47 | #define DEF_ADVPREFERREDLIFETIME 604800 | |
48 | ||
49 | /*XXX int-to-double comparison for INTERVAL items */ | |
50 | #ifndef MIP6 | |
51 | #define mobileip6 0 | |
52 | #endif | |
53 | ||
54 | #define MAXROUTERLIFETIME 9000 | |
55 | #define MIN_MAXINTERVAL (mobileip6 ? 1.5 : 4.0) | |
56 | #define MAX_MAXINTERVAL 1800 | |
57 | #define MIN_MININTERVAL (mobileip6 ? 0.5 : 3) | |
58 | #define MAXREACHABLETIME 3600000 | |
59 | ||
60 | #ifndef MIP6 | |
61 | #undef miobileip6 | |
62 | #endif | |
63 | ||
64 | #define MAX_INITIAL_RTR_ADVERT_INTERVAL 16 | |
65 | #define MAX_INITIAL_RTR_ADVERTISEMENTS 3 | |
66 | #define MAX_FINAL_RTR_ADVERTISEMENTS 3 | |
67 | #define MIN_DELAY_BETWEEN_RAS 3 | |
68 | #define MAX_RA_DELAY_TIME 500000 /* usec */ | |
69 | ||
70 | #define PREFIX_FROM_KERNEL 1 | |
71 | #define PREFIX_FROM_CONFIG 2 | |
72 | #define PREFIX_FROM_DYNAMIC 3 | |
73 | ||
74 | struct prefix { | |
75 | struct prefix *next; /* forward link */ | |
76 | struct prefix *prev; /* previous link */ | |
77 | ||
78 | u_int32_t validlifetime; /* AdvValidLifetime */ | |
79 | long vltimeexpire; /* expiration of vltime; decrement case only */ | |
80 | u_int32_t preflifetime; /* AdvPreferredLifetime */ | |
81 | long pltimeexpire; /* expiration of pltime; decrement case only */ | |
82 | u_int onlinkflg; /* bool: AdvOnLinkFlag */ | |
83 | u_int autoconfflg; /* bool: AdvAutonomousFlag */ | |
84 | #ifdef MIP6 | |
85 | u_int routeraddr; /* bool: RouterAddress */ | |
86 | #endif | |
87 | int prefixlen; | |
88 | int origin; /* from kernel or cofig */ | |
89 | struct in6_addr prefix; | |
90 | }; | |
91 | ||
92 | struct rtinfo { | |
93 | struct rtinfo *prev; /* previous link */ | |
94 | struct rtinfo *next; /* forward link */ | |
95 | ||
96 | u_int32_t ltime; /* route lifetime */ | |
97 | u_int rtpref; /* router preference */ | |
98 | int prefixlen; | |
99 | struct in6_addr prefix; | |
100 | }; | |
101 | ||
102 | struct soliciter { | |
103 | struct soliciter *next; | |
104 | struct sockaddr_in6 addr; | |
105 | }; | |
106 | ||
107 | struct rainfo { | |
108 | /* pointer for list */ | |
109 | struct rainfo *next; | |
110 | ||
111 | /* timer related parameters */ | |
112 | struct rtadvd_timer *timer; | |
113 | int initcounter; /* counter for the first few advertisements */ | |
114 | struct timeval lastsent; /* timestamp when the latest RA was sent */ | |
115 | int waiting; /* number of RS waiting for RA */ | |
116 | ||
117 | /* interface information */ | |
118 | int ifindex; | |
119 | int advlinkopt; /* bool: whether include link-layer addr opt */ | |
120 | struct sockaddr_dl *sdl; | |
121 | char ifname[16]; | |
122 | int phymtu; /* mtu of the physical interface */ | |
123 | ||
124 | /* Router configuration variables */ | |
125 | u_short lifetime; /* AdvDefaultLifetime */ | |
126 | u_int maxinterval; /* MaxRtrAdvInterval */ | |
127 | u_int mininterval; /* MinRtrAdvInterval */ | |
128 | int managedflg; /* AdvManagedFlag */ | |
129 | int otherflg; /* AdvOtherConfigFlag */ | |
130 | #ifdef MIP6 | |
131 | int haflg; /* HAFlag */ | |
132 | #endif | |
133 | int rtpref; /* router preference */ | |
134 | u_int32_t linkmtu; /* AdvLinkMTU */ | |
135 | u_int32_t reachabletime; /* AdvReachableTime */ | |
136 | u_int32_t retranstimer; /* AdvRetransTimer */ | |
137 | u_int hoplimit; /* AdvCurHopLimit */ | |
138 | struct prefix prefix; /* AdvPrefixList(link head) */ | |
139 | int pfxs; /* number of prefixes */ | |
140 | long clockskew; /* used for consisitency check of lifetimes */ | |
141 | ||
142 | #ifdef MIP6 | |
143 | u_short hapref; /* Home Agent Preference */ | |
144 | u_short hatime; /* Home Agent Lifetime */ | |
145 | #endif | |
146 | struct rtinfo route; /* route information option (link head) */ | |
147 | int routes; /* number of route information options */ | |
148 | ||
149 | /* actual RA packet data and its length */ | |
150 | size_t ra_datalen; | |
151 | u_char *ra_data; | |
152 | ||
153 | /* statistics */ | |
154 | u_quad_t raoutput; /* number of RAs sent */ | |
155 | u_quad_t rainput; /* number of RAs received */ | |
156 | u_quad_t rainconsistent; /* number of RAs inconsistent with ours */ | |
157 | u_quad_t rsinput; /* number of RSs received */ | |
158 | ||
159 | /* info about soliciter */ | |
160 | struct soliciter *soliciter; /* recent solication source */ | |
161 | }; | |
162 | ||
163 | void ra_timeout __P((void *)); | |
164 | void ra_timer_update __P((void *, struct timeval *)); | |
165 | ||
166 | int prefix_match __P((struct in6_addr *, int, struct in6_addr *, int)); | |
167 | struct rainfo *if_indextorainfo __P((int)); | |
168 | ||
169 | extern struct in6_addr in6a_site_allrouters; | |
170 | #ifdef MIP6 | |
171 | extern int mobileip6; | |
172 | #endif |