xref: /xnu-8796.121.2/bsd/netinet/if_ether.h (revision c54f35ca767986246321eb901baf8f5ff7923f6a)

/*
 * Copyright (c) 2000-2011 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,
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 * Please see the License for the specific language governing rights and
 * limitations under the License.
 *
 * @APPLE_OSREFERENCE_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

/*
 * 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] = ((const u_char *)ipaddr)[1] & 0x7f; \
	(enaddr)[4] = ((const u_char *)ipaddr)[2]; \
	(enaddr)[5] = ((const 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] = ((const u_char *)ip6addr)[12];                            \
	(enaddr)[3] = ((const u_char *)ip6addr)[13];                            \
	(enaddr)[4] = ((const u_char *)ip6addr)[14];                            \
	(enaddr)[5] = ((const 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       0x1
#define SIN_ROUTER      0x2
};
/*
 * IP and ethernet specific routing flags
 */
#define RTF_USETRAILERS RTF_PROTO1      /* use trailers */
#define RTF_ANNOUNCE    RTF_PROTO2      /* announce new arp entry */

#ifdef BSD_KERNEL_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(struct ifnet *, struct rtentry *, struct mbuf *,
    struct sockaddr *, u_char *, struct rtentry *);
void    arp_ifinit(struct ifnet *, struct ifaddr *);
#endif /* BSD_KERNEL_PRIVATE */

#endif /* _NETINET_IF_ETHER_H_ */