rtadvd.h revision 118664 
1/*	$FreeBSD: head/usr.sbin/rtadvd/rtadvd.h 118664 2003-08-08 16:56:01Z 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	struct rainfo *rainfo;	/* back pointer to the interface */
78
79	struct rtadvd_timer *timer; /* expiration timer.  used when a prefix
80				     * derived from the kernel is deleted.
81				     */
82
83	u_int32_t validlifetime; /* AdvValidLifetime */
84	long	vltimeexpire;	/* expiration of vltime; decrement case only */
85	u_int32_t preflifetime;	/* AdvPreferredLifetime */
86	long	pltimeexpire;	/* expiration of pltime; decrement case only */
87	u_int onlinkflg;	/* bool: AdvOnLinkFlag */
88	u_int autoconfflg;	/* bool: AdvAutonomousFlag */
89#ifdef MIP6
90	u_int routeraddr;	/* bool: RouterAddress */
91#endif
92	int prefixlen;
93	int origin;		/* from kernel or config */
94	struct in6_addr prefix;
95};
96
97struct rtinfo {
98	struct rtinfo *prev;	/* previous link */
99	struct rtinfo *next;	/* forward link */
100
101	u_int32_t ltime;	/* route lifetime */
102	u_int rtpref;		/* route preference */
103	int prefixlen;
104	struct in6_addr prefix;
105};
106
107struct soliciter {
108	struct soliciter *next;
109	struct sockaddr_in6 addr;
110};
111
112struct	rainfo {
113	/* pointer for list */
114	struct	rainfo *next;
115
116	/* timer related parameters */
117	struct rtadvd_timer *timer;
118	int initcounter; /* counter for the first few advertisements */
119	struct timeval lastsent; /* timestamp when the latest RA was sent */
120	int waiting;		/* number of RS waiting for RA */
121
122	/* interface information */
123	int	ifindex;
124	int	advlinkopt;	/* bool: whether include link-layer addr opt */
125	struct sockaddr_dl *sdl;
126	char	ifname[16];
127	int	phymtu;		/* mtu of the physical interface */
128
129	/* Router configuration variables */
130	u_short lifetime;	/* AdvDefaultLifetime */
131	u_int	maxinterval;	/* MaxRtrAdvInterval */
132	u_int	mininterval;	/* MinRtrAdvInterval */
133	int 	managedflg;	/* AdvManagedFlag */
134	int	otherflg;	/* AdvOtherConfigFlag */
135#ifdef MIP6
136	int	haflg;		/* HAFlag */
137#endif
138
139	int	rtpref;		/* router preference */
140	u_int32_t linkmtu;	/* AdvLinkMTU */
141	u_int32_t reachabletime; /* AdvReachableTime */
142	u_int32_t retranstimer;	/* AdvRetransTimer */
143	u_int	hoplimit;	/* AdvCurHopLimit */
144	struct prefix prefix;	/* AdvPrefixList(link head) */
145	int	pfxs;		/* number of prefixes */
146	long	clockskew;	/* used for consisitency check of lifetimes */
147
148#ifdef MIP6
149	u_short	hapref;		/* Home Agent Preference */
150	u_short	hatime;		/* Home Agent Lifetime */
151#endif
152	struct rtinfo route;	/* route information option (link head) */
153	int	routes;		/* number of route information options */
154
155	/* actual RA packet data and its length */
156	size_t ra_datalen;
157	u_char *ra_data;
158
159	/* statistics */
160	u_quad_t raoutput;	/* number of RAs sent */
161	u_quad_t rainput;	/* number of RAs received */
162	u_quad_t rainconsistent; /* number of RAs inconsistent with ours */
163	u_quad_t rsinput;	/* number of RSs received */
164
165	/* info about soliciter */
166	struct soliciter *soliciter;	/* recent solication source */
167};
168
169struct rtadvd_timer *ra_timeout __P((void *));
170void ra_timer_update __P((void *, struct timeval *));
171
172int prefix_match __P((struct in6_addr *, int, struct in6_addr *, int));
173struct rainfo *if_indextorainfo __P((int));
174struct prefix *find_prefix __P((struct rainfo *, struct in6_addr *, int));
175
176extern struct in6_addr in6a_site_allrouters;
177#ifdef MIP6
178extern int mobileip6;
179#endif
180