1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
|
/* $OpenBSD: rtadvd.h,v 1.8 2002/05/21 23:29:46 itojun Exp $ */
/* $KAME: rtadvd.h,v 1.19 2001/12/20 02:09:37 k-sugyou Exp $ */
/*
* Copyright (C) 1998 WIDE Project.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the project nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#define ALLNODES "ff02::1"
#define ALLROUTERS_LINK "ff02::2"
#define ALLROUTERS_SITE "ff05::2"
#define ANY "::"
#define RTSOLLEN 8
/* protocol constants and default values */
#define DEF_MAXRTRADVINTERVAL 600
#define DEF_ADVLINKMTU 0
#define DEF_ADVREACHABLETIME 0
#define DEF_ADVRETRANSTIMER 0
#define DEF_ADVCURHOPLIMIT 64
#define DEF_ADVVALIDLIFETIME 2592000
#define DEF_ADVPREFERREDLIFETIME 604800
/*XXX int-to-double comparison for INTERVAL items */
#ifndef MIP6
#define mobileip6 0
#endif
#define MAXROUTERLIFETIME 9000
#define MIN_MAXINTERVAL (mobileip6 ? 1.5 : 4.0)
#define MAX_MAXINTERVAL 1800
#define MIN_MININTERVAL (mobileip6 ? 0.05 : 3.0)
#define MAXREACHABLETIME 3600000
#ifndef MIP6
#undef miobileip6
#endif
#define MAX_INITIAL_RTR_ADVERT_INTERVAL 16
#define MAX_INITIAL_RTR_ADVERTISEMENTS 3
#define MAX_FINAL_RTR_ADVERTISEMENTS 3
#define MIN_DELAY_BETWEEN_RAS 3
#define MAX_RA_DELAY_TIME 500000 /* usec */
#define PREFIX_FROM_KERNEL 1
#define PREFIX_FROM_CONFIG 2
#define PREFIX_FROM_DYNAMIC 3
struct prefix {
struct prefix *next; /* forward link */
struct prefix *prev; /* previous link */
u_int32_t validlifetime; /* AdvValidLifetime */
long vltimeexpire; /* expiration of vltime; decrement case only */
u_int32_t preflifetime; /* AdvPreferredLifetime */
long pltimeexpire; /* expiration of pltime; decrement case only */
u_int onlinkflg; /* bool: AdvOnLinkFlag */
u_int autoconfflg; /* bool: AdvAutonomousFlag */
#ifdef MIP6
u_int routeraddr; /* bool: RouterAddress */
#endif
int prefixlen;
int origin; /* from kernel or cofig */
struct in6_addr prefix;
};
struct soliciter {
struct soliciter *next;
struct sockaddr_in6 addr;
};
struct rainfo {
/* pointer for list */
struct rainfo *next;
/* timer related parameters */
struct rtadvd_timer *timer;
int initcounter; /* counter for the first few advertisements */
struct timeval lastsent; /* timestamp when the latest RA was sent */
int waiting; /* number of RS waiting for RA */
/* interface information */
int ifindex;
int advlinkopt; /* bool: whether include link-layer addr opt */
struct sockaddr_dl *sdl;
char ifname[16];
int phymtu; /* mtu of the physical interface */
/* Router configuration variables */
u_short lifetime; /* AdvDefaultLifetime */
u_int maxinterval; /* MaxRtrAdvInterval */
u_int mininterval; /* MinRtrAdvInterval */
int managedflg; /* AdvManagedFlag */
int otherflg; /* AdvOtherConfigFlag */
#ifdef MIP6
int haflg; /* HAFlag */
#endif
u_int32_t linkmtu; /* AdvLinkMTU */
u_int32_t reachabletime; /* AdvReachableTime */
u_int32_t retranstimer; /* AdvRetransTimer */
u_int hoplimit; /* AdvCurHopLimit */
struct prefix prefix; /* AdvPrefixList(link head) */
int pfxs; /* number of prefixes */
long clockskew; /* used for consisitency check of lifetimes */
#ifdef MIP6
u_short hapref; /* Home Agent Preference */
u_short hatime; /* Home Agent Lifetime */
#endif
/* actual RA packet data and its length */
size_t ra_datalen;
u_char *ra_data;
/* statistics */
u_quad_t raoutput; /* number of RAs sent */
u_quad_t rainput; /* number of RAs received */
u_quad_t rainconsistent; /* number of RAs inconsistent with ours */
u_quad_t rsinput; /* number of RSs received */
/* info about soliciter */
struct soliciter *soliciter; /* recent solication source */
};
void ra_timeout(void *);
void ra_timer_update(void *, struct timeval *);
int prefix_match(struct in6_addr *, int, struct in6_addr *, int);
struct rainfo *if_indextorainfo(int);
struct prefix *find_prefix(struct rainfo *, struct in6_addr *, int);
extern struct in6_addr in6a_site_allrouters;
#ifdef MIP6
extern int mobileip6;
#endif
|
