/*
 * Copyright (c) 2009-2015 Apple Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 *
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 *
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 *
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 */

/*
 * Copyright (C) 2000 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.
 */

#ifndef _NETINET6_SCOPE6_VAR_H_
#define _NETINET6_SCOPE6_VAR_H_
#include <sys/appleapiopts.h>

/*
 * 16 is correspondent to 4bit multicast scope field.
 * i.e. from node-local to global with some reserved/unassigned types.
 */
#define SCOPE6_ID_MAX   16

#ifdef BSD_KERNEL_PRIVATE

struct scope6_id {
	u_int32_t s6id_list[SCOPE6_ID_MAX];
};

extern int in6_embedded_scope;
extern int in6_embedded_scope_debug;

#define IN6_NULL_IF_EMBEDDED_SCOPE(_var) (in6_embedded_scope ? NULL : (_var))

extern void scope6_ifattach(struct ifnet *);
extern void scope6_setdefault(struct ifnet *);
extern u_int32_t scope6_in6_addrscope(struct in6_addr *);
extern u_int32_t scope6_addr2default(struct in6_addr *);
extern int sa6_embedscope(struct sockaddr_in6 *, int, uint32_t *);
extern int sa6_recoverscope(struct sockaddr_in6 *, boolean_t);
extern int in6_setscope(struct in6_addr *, struct ifnet *, u_int32_t *);
extern int in6_clearscope(struct in6_addr *);
extern void rtkey_to_sa6(struct rtentry *, struct sockaddr_in6 *);
extern void rtgw_to_sa6(struct rtentry *, struct sockaddr_in6 *);
extern bool in6_are_addr_equal_scoped(const struct in6_addr *, const struct in6_addr *,
    uint32_t, uint32_t);
extern bool in6_are_masked_addr_scope_equal(const struct in6_addr *, uint32_t, const struct in6_addr *, uint32_t, const struct in6_addr *);

extern void in6_verify_ifscope(const struct in6_addr *, uint32_t);

#endif /* BSD_KERNEL_PRIVATE */
#endif /* _NETINET6_SCOPE6_VAR_H_ */