1/*	$KAME: rtsold.h,v 1.19 2003/04/16 09:48:15 itojun Exp $	*/
2
3/*-
4 * SPDX-License-Identifier: BSD-3-Clause
5 *
6 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the project nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34struct script_msg {
35	TAILQ_ENTRY(script_msg)	sm_next;
36
37	char *sm_msg;
38};
39
40TAILQ_HEAD(script_msg_head_t, script_msg);
41
42struct ra_opt {
43	TAILQ_ENTRY(ra_opt)	rao_next;
44
45	u_int8_t	rao_type;
46	struct timespec	rao_expire;
47	size_t		rao_len;
48	void		*rao_msg;
49};
50
51TAILQ_HEAD(rainfo_head, ra_opt);
52
53struct rainfo {
54	TAILQ_ENTRY(rainfo)	rai_next;
55
56	struct ifinfo		*rai_ifinfo;
57	struct sockaddr_in6	rai_saddr;
58	TAILQ_HEAD(, ra_opt)	rai_ra_opt;
59};
60
61/* Per-interface tracking info. */
62struct ifinfo {
63	TAILQ_ENTRY(ifinfo) ifi_next;	/* pointer to the next interface */
64
65	struct sockaddr_dl *sdl; /* link-layer address */
66	char ifname[IFNAMSIZ];	/* interface name */
67	uint32_t linkid;	/* link ID of this interface */
68	int active;		/* interface status */
69	int probeinterval;	/* interval of probe timer (if necessary) */
70	int probetimer;		/* rest of probe timer */
71	int mediareqok;		/* whether the IF supports SIOCGIFMEDIA */
72	int managedconfig;	/* need a separate protocol for the "managed"
73				 * configuration */
74	int otherconfig;	/* need a separate protocol for the "other"
75				 * configuration */
76	int alwaysconfig;	/* Have we called the 'always' script? */
77	int state;
78	int probes;
79	int dadcount;
80	struct timespec timer;
81	struct timespec expire;
82#define IFI_DNSOPT_STATE_NOINFO		0
83#define IFI_DNSOPT_STATE_RECEIVED     	1
84	int ifi_rdnss;		/* RDNSS option state */
85	int ifi_dnssl;		/* DNSSL option state */
86
87	int racnt;		/* total # of valid RAs it have got */
88	TAILQ_HEAD(, rainfo)	ifi_rainfo;
89
90	size_t rs_datalen;
91	u_char *rs_data;
92};
93
94/* per interface status */
95#define IFS_IDLE	0
96#define IFS_DELAY	1
97#define IFS_PROBE	2
98#define IFS_DOWN	3
99#define IFS_TENTATIVE	4
100
101/* Interface list */
102extern TAILQ_HEAD(ifinfo_head_t, ifinfo) ifinfo_head;
103
104#define	DNSINFO_ORIGIN_LABEL	"slaac"
105/*
106 * RFC 3542 API deprecates IPV6_PKTINFO in favor of
107 * IPV6_RECVPKTINFO
108 */
109#ifndef IPV6_RECVPKTINFO
110#ifdef IPV6_PKTINFO
111#define IPV6_RECVPKTINFO	IPV6_PKTINFO
112#endif
113#endif
114/*
115 * RFC 3542 API deprecates IPV6_HOPLIMIT in favor of
116 * IPV6_RECVHOPLIMIT
117 */
118#ifndef IPV6_RECVHOPLIMIT
119#ifdef IPV6_HOPLIMIT
120#define IPV6_RECVHOPLIMIT	IPV6_HOPLIMIT
121#endif
122#endif
123
124#ifndef IN6ADDR_LINKLOCAL_ALLROUTERS_INIT
125#define IN6ADDR_LINKLOCAL_ALLROUTERS_INIT			\
126	{{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,	\
127	    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 }}}
128#endif
129
130#define	TS_CMP(tsp, usp, cmp)						\
131	(((tsp)->tv_sec == (usp)->tv_sec) ?				\
132	    ((tsp)->tv_nsec cmp (usp)->tv_nsec) :			\
133	    ((tsp)->tv_sec cmp (usp)->tv_sec))
134#define	TS_ADD(tsp, usp, vsp)						\
135	do {								\
136		(vsp)->tv_sec = (tsp)->tv_sec + (usp)->tv_sec;		\
137		(vsp)->tv_nsec = (tsp)->tv_nsec + (usp)->tv_nsec;	\
138		if ((vsp)->tv_nsec >= 1000000000L) {			\
139			(vsp)->tv_sec++;				\
140			(vsp)->tv_nsec -= 1000000000L;			\
141		}							\
142	} while (0)
143#define	TS_SUB(tsp, usp, vsp)						\
144	do {								\
145		(vsp)->tv_sec = (tsp)->tv_sec - (usp)->tv_sec;		\
146		(vsp)->tv_nsec = (tsp)->tv_nsec - (usp)->tv_nsec;	\
147		if ((vsp)->tv_nsec < 0) {				\
148			(vsp)->tv_sec--;				\
149			(vsp)->tv_nsec += 1000000000L;			\
150		}							\
151	} while (0)
152
153/* rtsold.c */
154struct cap_channel;
155extern struct timespec tm_max;
156extern int dflag;
157extern int aflag;
158extern int Fflag;
159extern int uflag;
160extern const char *managedconf_script;
161extern const char *otherconf_script;
162extern const char *alwaysconf_script;
163extern const char *resolvconf_script;
164extern struct cap_channel *capllflags, *capscript, *capsendmsg, *capsyslog;
165
166struct ifinfo *find_ifinfo(int);
167struct rainfo *find_rainfo(struct ifinfo *, struct sockaddr_in6 *);
168void rtsol_timer_update(struct ifinfo *);
169extern void warnmsg(int, const char *, const char *, ...)
170     __attribute__((__format__(__printf__, 3, 4)));
171extern int ra_opt_handler(struct ifinfo *);
172
173/* if.c */
174struct nd_opt_hdr;
175extern int ifinit(void);
176extern int interface_up(char *);
177extern int interface_status(struct ifinfo *);
178extern int lladdropt_length(struct sockaddr_dl *);
179extern void lladdropt_fill(struct sockaddr_dl *, struct nd_opt_hdr *);
180extern struct sockaddr_dl *if_nametosdl(char *);
181
182/* rtsol.c */
183extern int recvsockopen(void);
184extern void rtsol_input(int);
185
186/* cap_llflags.c */
187extern int cap_llflags_get(struct cap_channel *, const char *, int *);
188
189/* cap_script.c */
190extern int cap_script_run(struct cap_channel *, const char *const *);
191extern int cap_script_wait(struct cap_channel *, int *);
192
193/* cap_sendmsg.c */
194extern int cap_probe_defrouters(struct cap_channel *, struct ifinfo *);
195extern int cap_rssend(struct cap_channel *, struct ifinfo *);
196
197/* dump.c */
198extern FILE *rtsold_init_dumpfile(const char *);
199extern void rtsold_dump(FILE *);
200extern const char *sec2str(const struct timespec *);
201
202/* rtsock.c */
203extern int rtsock_open(void);
204extern int rtsock_input(int);
205