1/*	$NetBSD: net_inet6_nd_90.c,v 1.2 2023/12/09 20:31:57 oster Exp $ */
2
3/*      $NetBSD: net_inet6_nd_90.c,v 1.2 2023/12/09 20:31:57 oster Exp $        */
4/*      $KAME: nd6.c,v 1.279 2002/06/08 11:16:51 itojun Exp $   */
5
6/*
7 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
8 * All rights reserved.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the project nor the names of its contributors
19 *    may be used to endorse or promote products derived from this software
20 *    without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35#include <sys/cdefs.h>
36__KERNEL_RCSID(0, "$NetBSD: net_inet6_nd_90.c,v 1.2 2023/12/09 20:31:57 oster Exp $");
37
38#if defined(_KERNEL_OPT)
39#include "opt_compat_netbsd.h"
40#endif
41
42#include <sys/param.h>
43#include <sys/systm.h>
44#include <sys/namei.h>
45#include <sys/filedesc.h>
46#include <sys/kernel.h>
47#include <sys/sysctl.h>
48
49#include <net/if.h>
50
51#include <netinet/in.h>
52
53#include <netinet/icmp6.h>
54#include <netinet/ip6.h>
55
56#include <netinet6/in6_var.h>
57#include <netinet6/nd6.h>
58
59#include <sys/compat_stub.h>
60
61#include <compat/common/compat_mod.h>
62
63#ifdef INET6
64
65static struct sysctllog *nd6_clog;
66
67/*
68 * sysctl helper routine for the net.inet6.icmp6.nd6 nodes.  silly?
69 */
70static int
71sysctl_net_inet6_icmp6_nd6(SYSCTLFN_ARGS)
72{
73	(void)&name;
74	(void)&l;
75	(void)&oname;
76
77	if (namelen != 0)
78		return (EINVAL);
79
80	return (nd6_sysctl(rnode->sysctl_num, oldp, oldlenp,
81	    /*XXXUNCONST*/
82	    __UNCONST(newp), newlen));
83}
84int real_net_inet6_nd_90(int);
85
86/*
87 * the hook is only called for valid codes, so the mere presence
88 * of the hook means success.
89 */
90/* ARGSUSED */
91int
92real_net_inet6_nd_90(int name)
93{
94
95	return 0;
96}
97
98int
99net_inet6_nd_90_init(void)
100{
101	int error;
102
103	error = sysctl_createv(&nd6_clog, 0, NULL, NULL,
104		CTLFLAG_PERMANENT,
105		CTLTYPE_STRUCT, "nd6_drlist",
106		SYSCTL_DESCR("Default router list"),
107		sysctl_net_inet6_icmp6_nd6, 0, NULL, 0,
108		CTL_NET, PF_INET6, IPPROTO_ICMPV6,
109		OICMPV6CTL_ND6_DRLIST, CTL_EOL);
110	if (error != 0)
111		return error;
112
113	error = sysctl_createv(&nd6_clog, 0, NULL, NULL,
114		CTLFLAG_PERMANENT,
115		CTLTYPE_STRUCT, "nd6_prlist",
116		SYSCTL_DESCR("Prefix list"),
117		sysctl_net_inet6_icmp6_nd6, 0, NULL, 0,
118		CTL_NET, PF_INET6, IPPROTO_ICMPV6,
119		OICMPV6CTL_ND6_PRLIST, CTL_EOL);
120
121	MODULE_HOOK_SET(net_inet6_nd_90_hook, real_net_inet6_nd_90);
122	return error;
123}
124
125int
126net_inet6_nd_90_fini(void)
127{
128
129	sysctl_teardown(&nd6_clog);
130	MODULE_HOOK_UNSET(net_inet6_nd_90_hook);
131	return 0;
132}
133
134#endif /* INET6 */
135
136