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 * $FreeBSD$
34 */
35
36struct script_msg {
37	TAILQ_ENTRY(script_msg)	sm_next;
38
39	char *sm_msg;
40};
41
42TAILQ_HEAD(script_msg_head_t, script_msg);
43
44struct ra_opt {
45	TAILQ_ENTRY(ra_opt)	rao_next;
46
47	u_int8_t	rao_type;
48	struct timespec	rao_expire;
49	size_t		rao_len;
50	void		*rao_msg;
51};
52
53TAILQ_HEAD(rainfo_head, ra_opt);
54
55struct rainfo {
56	TAILQ_ENTRY(rainfo)	rai_next;
57
58	struct ifinfo		*rai_ifinfo;
59	struct sockaddr_in6	rai_saddr;
60	TAILQ_HEAD(, ra_opt)	rai_ra_opt;
61};
62
63/* Per-interface tracking info. */
64struct ifinfo {
65	TAILQ_ENTRY(ifinfo) ifi_next;	/* pointer to the next interface */
66
67	struct sockaddr_dl *sdl; /* link-layer address */
68	char ifname[IFNAMSIZ];	/* interface name */
69	uint32_t linkid;	/* link ID of this interface */
70	int active;		/* interface status */
71	int probeinterval;	/* interval of probe timer (if necessary) */
72	int probetimer;		/* rest of probe timer */
73	int mediareqok;		/* whether the IF supports SIOCGIFMEDIA */
74	int otherconfig;	/* need a separate protocol for the "other"
75				 * configuration */
76	int state;
77	int probes;
78	int dadcount;
79	struct timespec timer;
80	struct timespec expire;
81#define IFI_DNSOPT_STATE_NOINFO		0
82#define IFI_DNSOPT_STATE_RECEIVED     	1
83	int ifi_rdnss;		/* RDNSS option state */
84	int ifi_dnssl;		/* DNSSL option state */
85
86	int racnt;		/* total # of valid RAs it have got */
87	TAILQ_HEAD(, rainfo)	ifi_rainfo;
88
89	size_t rs_datalen;
90	u_char *rs_data;
91};
92
93/* per interface status */
94#define IFS_IDLE	0
95#define IFS_DELAY	1
96#define IFS_PROBE	2
97#define IFS_DOWN	3
98#define IFS_TENTATIVE	4
99
100/* Interface list */
101extern TAILQ_HEAD(ifinfo_head_t, ifinfo) ifinfo_head;
102
103#define	DNSINFO_ORIGIN_LABEL	"slaac"
104/*
105 * RFC 3542 API deprecates IPV6_PKTINFO in favor of
106 * IPV6_RECVPKTINFO
107 */
108#ifndef IPV6_RECVPKTINFO
109#ifdef IPV6_PKTINFO
110#define IPV6_RECVPKTINFO	IPV6_PKTINFO
111#endif
112#endif
113/*
114 * RFC 3542 API deprecates IPV6_HOPLIMIT in favor of
115 * IPV6_RECVHOPLIMIT
116 */
117#ifndef IPV6_RECVHOPLIMIT
118#ifdef IPV6_HOPLIMIT
119#define IPV6_RECVHOPLIMIT	IPV6_HOPLIMIT
120#endif
121#endif
122
123#ifndef IN6ADDR_LINKLOCAL_ALLROUTERS_INIT
124#define IN6ADDR_LINKLOCAL_ALLROUTERS_INIT			\
125	{{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,	\
126	    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 }}}
127#endif
128
129#define	TS_CMP(tsp, usp, cmp)						\
130	(((tsp)->tv_sec == (usp)->tv_sec) ?				\
131	    ((tsp)->tv_nsec cmp (usp)->tv_nsec) :			\
132	    ((tsp)->tv_sec cmp (usp)->tv_sec))
133#define	TS_ADD(tsp, usp, vsp)						\
134	do {								\
135		(vsp)->tv_sec = (tsp)->tv_sec + (usp)->tv_sec;		\
136		(vsp)->tv_nsec = (tsp)->tv_nsec + (usp)->tv_nsec;	\
137		if ((vsp)->tv_nsec >= 1000000000L) {			\
138			(vsp)->tv_sec++;				\
139			(vsp)->tv_nsec -= 1000000000L;			\
140		}							\
141	} while (0)
142#define	TS_SUB(tsp, usp, vsp)						\
143	do {								\
144		(vsp)->tv_sec = (tsp)->tv_sec - (usp)->tv_sec;		\
145		(vsp)->tv_nsec = (tsp)->tv_nsec - (usp)->tv_nsec;	\
146		if ((vsp)->tv_nsec < 0) {				\
147			(vsp)->tv_sec--;				\
148			(vsp)->tv_nsec += 1000000000L;			\
149		}							\
150	} while (0)
151
152/* rtsold.c */
153struct cap_channel;
154extern struct timespec tm_max;
155extern int dflag;
156extern int aflag;
157extern int Fflag;
158extern int uflag;
159extern const char *otherconf_script;
160extern const char *resolvconf_script;
161extern struct cap_channel *capllflags, *capscript, *capsendmsg, *capsyslog;
162
163struct ifinfo *find_ifinfo(int);
164struct rainfo *find_rainfo(struct ifinfo *, struct sockaddr_in6 *);
165void rtsol_timer_update(struct ifinfo *);
166extern void warnmsg(int, const char *, const char *, ...)
167     __attribute__((__format__(__printf__, 3, 4)));
168extern int ra_opt_handler(struct ifinfo *);
169
170/* if.c */
171struct nd_opt_hdr;
172extern int ifinit(void);
173extern int interface_up(char *);
174extern int interface_status(struct ifinfo *);
175extern int lladdropt_length(struct sockaddr_dl *);
176extern void lladdropt_fill(struct sockaddr_dl *, struct nd_opt_hdr *);
177extern struct sockaddr_dl *if_nametosdl(char *);
178
179/* rtsol.c */
180extern int recvsockopen(void);
181extern void rtsol_input(int);
182
183/* cap_llflags.c */
184extern int cap_llflags_get(struct cap_channel *, const char *, int *);
185
186/* cap_script.c */
187extern int cap_script_run(struct cap_channel *, const char *const *);
188extern int cap_script_wait(struct cap_channel *, int *);
189
190/* cap_sendmsg.c */
191extern int cap_probe_defrouters(struct cap_channel *, struct ifinfo *);
192extern int cap_rssend(struct cap_channel *, struct ifinfo *);
193
194/* dump.c */
195extern FILE *rtsold_init_dumpfile(const char *);
196extern void rtsold_dump(FILE *);
197extern const char *sec2str(const struct timespec *);
198
199/* rtsock.c */
200extern int rtsock_open(void);
201extern int rtsock_input(int);
202