/*
 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * The contents of this file constitute Original Code as defined in and
 * are subject to the Apple Public Source License Version 1.1 (the
 * "License").  You may not use this file except in compliance with the
 * License.  Please obtain a copy of the License at
 * http://www.apple.com/publicsource and read it before using this file.
 * 
 * This 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 OR NON-INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/*
 * Copyright (c) 1982, 1986, 1993
 *	The Regents of the University of California.  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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
 *
 *	@(#)if_ether.h	8.3 (Berkeley) 5/2/95
 * $FreeBSD: src/sys/netinet/if_ether.h,v 1.24 1999/12/29 04:40:58 peter Exp $
 */

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

#include <net/ethernet.h>

#include <netinet/in.h>
#include <net/if_arp.h>
#define ea_byte	ether_addr_octet

#ifdef __APPLE__
#ifdef __APPLE_API_UNSTABLE
/*
 * Macro for looking up the ether_multi record for a given range of Ethernet
 * multicast addresses connected to a given arpcom structure.  If no matching
 * record is found, "enm" returns NULL.
 */
#define ETHER_LOOKUP_MULTI(addrlo, addrhi, ac, enm) \
	/* u_char addrlo[6]; */ \
	/* u_char addrhi[6]; */ \
	/* struct arpcom *ac; */ \
	/* struct ether_multi *enm; */ \
{ \
	for ((enm) = (ac)->ac_multiaddrs; \
	    (enm) != NULL && \
	    (bcmp((enm)->enm_addrlo, (addrlo), 6) != 0 || \
	     bcmp((enm)->enm_addrhi, (addrhi), 6) != 0); \
		(enm) = (enm)->enm_next); \
}

/*
 * Macro to step through all of the ether_multi records, one at a time.
 * The current position is remembered in "step", which the caller must
 * provide.  ETHER_FIRST_MULTI(), below, must be called to initialize "step"
 * and get the first record.  Both macros return a NULL "enm" when there
 * are no remaining records.
 */
#define ETHER_NEXT_MULTI(step, enm) \
	/* struct ether_multistep step; */  \
	/* struct ether_multi *enm; */  \
{ \
	if (((enm) = (step).e_enm) != NULL) \
		(step).e_enm = (enm)->enm_next; \
}

#define ETHER_FIRST_MULTI(step, ac, enm) \
	/* struct ether_multistep step; */ \
	/* struct arpcom *ac; */ \
	/* struct ether_multi *enm; */ \
{ \
	(step).e_enm = (ac)->ac_multiaddrs; \
	ETHER_NEXT_MULTI((step), (enm)); \
}
#endif /* __APPLE_API_UNSTABLE */
#endif /* __APPLE__ */

/*
 * Macro to map an IP multicast address to an Ethernet multicast address.
 * The high-order 25 bits of the Ethernet address are statically assigned,
 * and the low-order 23 bits are taken from the low end of the IP address.
 */
#define ETHER_MAP_IP_MULTICAST(ipaddr, enaddr) \
	/* struct in_addr *ipaddr; */ \
	/* u_char enaddr[ETHER_ADDR_LEN];	   */ \
{ \
	(enaddr)[0] = 0x01; \
	(enaddr)[1] = 0x00; \
	(enaddr)[2] = 0x5e; \
	(enaddr)[3] = ((u_char *)ipaddr)[1] & 0x7f; \
	(enaddr)[4] = ((u_char *)ipaddr)[2]; \
	(enaddr)[5] = ((u_char *)ipaddr)[3]; \
}
/*
 * Macro to map an IP6 multicast address to an Ethernet multicast address.
 * The high-order 16 bits of the Ethernet address are statically assigned,
 * and the low-order 32 bits are taken from the low end of the IP6 address.
 */
#define ETHER_MAP_IPV6_MULTICAST(ip6addr, enaddr)			\
/* struct	in6_addr *ip6addr; */					\
/* u_char	enaddr[ETHER_ADDR_LEN]; */				\
{                                                                       \
	(enaddr)[0] = 0x33;						\
	(enaddr)[1] = 0x33;						\
	(enaddr)[2] = ((u_char *)ip6addr)[12];				\
	(enaddr)[3] = ((u_char *)ip6addr)[13];				\
	(enaddr)[4] = ((u_char *)ip6addr)[14];				\
	(enaddr)[5] = ((u_char *)ip6addr)[15];				\
}

/*
 * Ethernet Address Resolution Protocol.
 *
 * See RFC 826 for protocol description.  Structure below is adapted
 * to resolving internet addresses.  Field names used correspond to
 * RFC 826.
 */
struct	ether_arp {
	struct	arphdr ea_hdr;	/* fixed-size header */
	u_char	arp_sha[ETHER_ADDR_LEN];	/* sender hardware address */
	u_char	arp_spa[4];	/* sender protocol address */
	u_char	arp_tha[ETHER_ADDR_LEN];	/* target hardware address */
	u_char	arp_tpa[4];	/* target protocol address */
};
#define	arp_hrd	ea_hdr.ar_hrd
#define	arp_pro	ea_hdr.ar_pro
#define	arp_hln	ea_hdr.ar_hln
#define	arp_pln	ea_hdr.ar_pln
#define	arp_op	ea_hdr.ar_op

struct sockaddr_inarp {
	u_char	sin_len;
	u_char	sin_family;
	u_short sin_port;
	struct	in_addr sin_addr;
	struct	in_addr sin_srcaddr;
	u_short	sin_tos;
	u_short	sin_other;
#define SIN_PROXY 1
};
/*
 * IP and ethernet specific routing flags
 */
#define	RTF_USETRAILERS	RTF_PROTO1	/* use trailers */
#define RTF_ANNOUNCE	RTF_PROTO2	/* announce new arp entry */

#ifdef	KERNEL
#ifdef __APPLE_API_PRIVATE
extern u_char	ether_ipmulticast_min[ETHER_ADDR_LEN];
extern u_char	ether_ipmulticast_max[ETHER_ADDR_LEN];
extern struct	ifqueue arpintrq;

int	arpresolve __P((struct arpcom *, struct rtentry *, struct mbuf *,
			struct sockaddr *, u_char *, struct rtentry *));
#endif /* __APPLE_API_PRIVATE */
#ifdef __APPLE_API_UNSTABLE
void	arp_ifinit __P((struct arpcom *, struct ifaddr *));
#endif /* __APPLE_API_UNSTABLE */
#endif

#endif
