/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* 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.
*
* $KAME: in6_rmx.c,v 1.11 2001/07/26 06:53:16 jinmei Exp $
*/
/*-
* Copyright 1994, 1995 Massachusetts Institute of Technology
*
* Permission to use, copy, modify, and distribute this software and
* its documentation for any purpose and without fee is hereby
* granted, provided that both the above copyright notice and this
* permission notice appear in all copies, that both the above
* copyright notice and this permission notice appear in all
* supporting documentation, and that the name of M.I.T. not be used
* in advertising or publicity pertaining to distribution of the
* software without specific, written prior permission. M.I.T. makes
* no representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied
* warranty.
*
* THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS
* ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
* SHALL M.I.T. 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>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/queue.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/mbuf.h>
#include <sys/rwlock.h>
#include <sys/syslog.h>
#include <sys/callout.h>
#include <net/if.h>
#include <net/if_var.h>
#include <net/if_private.h>
#include <net/route.h>
#include <net/route/route_ctl.h>
#include <net/route/route_var.h>
#include <net/route/nhop.h>
#include <netinet/in.h>
#include <netinet/ip_var.h>
#include <netinet/in_var.h>
#include <netinet/ip6.h>
#include <netinet6/ip6_var.h>
#include <netinet/icmp6.h>
#include <netinet6/nd6.h>
static int
rib6_set_nh_pfxflags(u_int fibnum, const struct sockaddr *addr, const struct sockaddr *mask,
struct nhop_object *nh)
{
const struct sockaddr_in6 *mask6 = (const struct sockaddr_in6 *)mask;
if (mask6 == NULL)
nhop_set_pxtype_flag(nh, NHF_HOST);
else if (IN6_IS_ADDR_UNSPECIFIED(&mask6->sin6_addr))
nhop_set_pxtype_flag(nh, NHF_DEFAULT);
else
nhop_set_pxtype_flag(nh, 0);
return (0);
}
static int
rib6_augment_nh(u_int fibnum, struct nhop_object *nh)
{
/*
* Check route MTU:
* inherit interface MTU if not set or
* check if MTU is too large.
*/
if (nh->nh_mtu == 0) {
nh->nh_mtu = IN6_LINKMTU(nh->nh_ifp);
} else if (nh->nh_mtu > IN6_LINKMTU(nh->nh_ifp))
nh->nh_mtu = IN6_LINKMTU(nh->nh_ifp);
/* Set nexthop type */
if (nhop_get_type(nh) == 0) {
uint16_t nh_type;
if (nh->nh_flags & NHF_GATEWAY)
nh_type = NH_TYPE_IPV6_ETHER_NHOP;
else
nh_type = NH_TYPE_IPV6_ETHER_RSLV;
nhop_set_type(nh, nh_type);
}
return (0);
}
/*
* Initialize our routing tree.
*/
struct rib_head *
in6_inithead(uint32_t fibnum)
{
struct rib_head *rh;
struct rib_subscription *rs __diagused;
rh = rt_table_init(offsetof(struct sockaddr_in6, sin6_addr) << 3,
AF_INET6, fibnum);
if (rh == NULL)
return (NULL);
rh->rnh_set_nh_pfxflags = rib6_set_nh_pfxflags;
rh->rnh_augment_nh = rib6_augment_nh;
rs = rib_subscribe_internal(rh, nd6_subscription_cb, NULL,
RIB_NOTIFY_IMMEDIATE, true);
KASSERT(rs != NULL, ("Unable to subscribe to fib %u\n", fibnum));
return (rh);
}
#ifdef VIMAGE
void
in6_detachhead(struct rib_head *rh)
{
rt_table_destroy(rh);
}
#endif
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