rtadvd.h revision 78064 
1/*	$FreeBSD: head/usr.sbin/rtadvd/rtadvd.h 78064 2001-06-11 12:39:29Z ume $	*/
2/*	$KAME: rtadvd.h,v 1.16 2001/04/10 15:08:31 suz Exp $	*/
3
4/*
5 * Copyright (C) 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#define ALLNODES "ff02::1"
34#define ALLROUTERS_LINK "ff02::2"
35#define ALLROUTERS_SITE "ff05::2"
36#define ANY "::"
37#define RTSOLLEN 8
38
39/* protocol constants and default values */
40#define DEF_MAXRTRADVINTERVAL 600
41#define DEF_ADVLINKMTU 0
42#define DEF_ADVREACHABLETIME 0
43#define DEF_ADVRETRANSTIMER 0
44#define DEF_ADVCURHOPLIMIT 64
45#define DEF_ADVVALIDLIFETIME 2592000
46#define DEF_ADVPREFERREDLIFETIME 604800
47
48/*XXX int-to-double comparison for INTERVAL items */
49#ifndef MIP6
50#define mobileip6 0
51#endif
52
53#define MAXROUTERLIFETIME 9000
54#define MIN_MAXINTERVAL (mobileip6 ? 1.5 : 4.0)
55#define MAX_MAXINTERVAL 1800
56#define MIN_MININTERVAL	(mobileip6 ? 0.5 : 3)
57#define MAXREACHABLETIME 3600000
58
59#ifndef MIP6
60#undef miobileip6
61#endif
62
63#define MAX_INITIAL_RTR_ADVERT_INTERVAL  16
64#define MAX_INITIAL_RTR_ADVERTISEMENTS    3
65#define MAX_FINAL_RTR_ADVERTISEMENTS      3
66#define MIN_DELAY_BETWEEN_RAS             3
67#define MAX_RA_DELAY_TIME                 500000 /* usec */
68
69#define PREFIX_FROM_KERNEL 1
70#define PREFIX_FROM_CONFIG 2
71#define PREFIX_FROM_DYNAMIC 3
72
73struct prefix {
74	struct prefix *next;	/* forward link */
75	struct prefix *prev;	/* previous link */
76
77	u_int32_t validlifetime; /* AdvValidLifetime */
78	long	vltimeexpire;	/* expiration of vltime; decrement case only */
79	u_int32_t preflifetime;	/* AdvPreferredLifetime */
80	long	pltimeexpire;	/* expiration of pltime; decrement case only */
81	u_int onlinkflg;	/* bool: AdvOnLinkFlag */
82	u_int autoconfflg;	/* bool: AdvAutonomousFlag */
83#ifdef MIP6
84	u_int routeraddr;	/* bool: RouterAddress */
85#endif
86	int prefixlen;
87	int origin;		/* from kernel or cofig */
88	struct in6_addr prefix;
89};
90
91struct rtinfo {
92	struct rtinfo *prev;	/* previous link */
93	struct rtinfo *next;	/* forward link */
94
95	u_int32_t ltime;	/* route lifetime */
96	u_int rtpref;		/* router preference */
97	int prefixlen;
98	struct in6_addr prefix;
99};
100
101struct soliciter {
102	struct soliciter *next;
103	struct sockaddr_in6 addr;
104};
105
106struct	rainfo {
107	/* pointer for list */
108	struct	rainfo *next;
109
110	/* timer related parameters */
111	struct rtadvd_timer *timer;
112	int initcounter; /* counter for the first few advertisements */
113	struct timeval lastsent; /* timestamp when the latest RA was sent */
114	int waiting;		/* number of RS waiting for RA */
115
116	/* interface information */
117	int	ifindex;
118	int	advlinkopt;	/* bool: whether include link-layer addr opt */
119	struct sockaddr_dl *sdl;
120	char	ifname[16];
121	int	phymtu;		/* mtu of the physical interface */
122
123	/* Router configuration variables */
124	u_short lifetime;	/* AdvDefaultLifetime */
125	u_int	maxinterval;	/* MaxRtrAdvInterval */
126	u_int	mininterval;	/* MinRtrAdvInterval */
127	int 	managedflg;	/* AdvManagedFlag */
128	int	otherflg;	/* AdvOtherConfigFlag */
129#ifdef MIP6
130	int	haflg;		/* HAFlag */
131#endif
132	int	rtpref;		/* router preference */
133	u_int32_t linkmtu;	/* AdvLinkMTU */
134	u_int32_t reachabletime; /* AdvReachableTime */
135	u_int32_t retranstimer;	/* AdvRetransTimer */
136	u_int	hoplimit;	/* AdvCurHopLimit */
137	struct prefix prefix;	/* AdvPrefixList(link head) */
138	int	pfxs;		/* number of prefixes */
139	long	clockskew;	/* used for consisitency check of lifetimes */
140
141#ifdef MIP6
142	u_short	hapref;		/* Home Agent Preference */
143	u_short	hatime;		/* Home Agent Lifetime */
144#endif
145	struct rtinfo route;	/* route information option (link head) */
146	int	routes;		/* number of route information options */
147
148	/* actual RA packet data and its length */
149	size_t ra_datalen;
150	u_char *ra_data;
151
152	/* statistics */
153	u_quad_t raoutput;	/* number of RAs sent */
154	u_quad_t rainput;	/* number of RAs received */
155	u_quad_t rainconsistent; /* number of RAs inconsistent with ours */
156	u_quad_t rsinput;	/* number of RSs received */
157
158	/* info about soliciter */
159	struct soliciter *soliciter;	/* recent solication source */
160};
161
162void ra_timeout __P((void *));
163void ra_timer_update __P((void *, struct timeval *));
164
165int prefix_match __P((struct in6_addr *, int, struct in6_addr *, int));
166struct rainfo *if_indextorainfo __P((int));
167
168extern struct in6_addr in6a_site_allrouters;
169#ifdef MIP6
170extern int mobileip6;
171#endif
172