/*      $NetBSD: net_inet6_nd_90.c,v 1.2 2023/12/09 20:31:57 oster Exp $ */

/*      $NetBSD: net_inet6_nd_90.c,v 1.2 2023/12/09 20:31:57 oster Exp $        */
/*      $KAME: nd6.c,v 1.279 2002/06/08 11:16:51 itojun Exp $   */

/*
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. Neither the name of the project nor the names of its contributors
*    may be used to endorse or promote products derived from this software
*    without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: net_inet6_nd_90.c,v 1.2 2023/12/09 20:31:57 oster Exp $");

#if defined(_KERNEL_OPT)
#include "opt_compat_netbsd.h"
#endif

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/namei.h>
#include <sys/filedesc.h>
#include <sys/kernel.h>
#include <sys/sysctl.h>

#include <net/if.h>

#include <netinet/in.h>

#include <netinet/icmp6.h>
#include <netinet/ip6.h>

#include <netinet6/in6_var.h>
#include <netinet6/nd6.h>

#include <sys/compat_stub.h>

#include <compat/common/compat_mod.h>

#ifdef INET6

static struct sysctllog *nd6_clog;

/*
* sysctl helper routine for the net.inet6.icmp6.nd6 nodes.  silly?
*/
static int
sysctl_net_inet6_icmp6_nd6(SYSCTLFN_ARGS)
{
       (void)&name;
       (void)&l;
       (void)&oname;

       if (namelen != 0)
               return (EINVAL);

       return (nd6_sysctl(rnode->sysctl_num, oldp, oldlenp,
           /*XXXUNCONST*/
           __UNCONST(newp), newlen));
}
int real_net_inet6_nd_90(int);

/*
* the hook is only called for valid codes, so the mere presence
* of the hook means success.
*/
/* ARGSUSED */
int
real_net_inet6_nd_90(int name)
{

       return 0;
}

int
net_inet6_nd_90_init(void)
{
       int error;

       error = sysctl_createv(&nd6_clog, 0, NULL, NULL,
               CTLFLAG_PERMANENT,
               CTLTYPE_STRUCT, "nd6_drlist",
               SYSCTL_DESCR("Default router list"),
               sysctl_net_inet6_icmp6_nd6, 0, NULL, 0,
               CTL_NET, PF_INET6, IPPROTO_ICMPV6,
               OICMPV6CTL_ND6_DRLIST, CTL_EOL);
       if (error != 0)
               return error;

       error = sysctl_createv(&nd6_clog, 0, NULL, NULL,
               CTLFLAG_PERMANENT,
               CTLTYPE_STRUCT, "nd6_prlist",
               SYSCTL_DESCR("Prefix list"),
               sysctl_net_inet6_icmp6_nd6, 0, NULL, 0,
               CTL_NET, PF_INET6, IPPROTO_ICMPV6,
               OICMPV6CTL_ND6_PRLIST, CTL_EOL);

       MODULE_HOOK_SET(net_inet6_nd_90_hook, real_net_inet6_nd_90);
       return error;
}

int
net_inet6_nd_90_fini(void)
{

       sysctl_teardown(&nd6_clog);
       MODULE_HOOK_UNSET(net_inet6_nd_90_hook);
       return 0;
}

#endif /* INET6 */