/*
 * Copyright (c) 2000-2016 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) 1982, 1986, 1989, 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.
 *
 *	From: @(#)if.h	8.1 (Berkeley) 6/10/93
 * $FreeBSD: src/sys/net/if_var.h,v 1.18.2.7 2001/07/24 19:10:18 brooks Exp $
 */

#ifndef	_NET_IF_VAR_H_
#define	_NET_IF_VAR_H_

#include <sys/appleapiopts.h>
#include <stdint.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/queue.h>		/* get TAILQ macros */


#ifdef __APPLE__
#define APPLE_IF_FAM_LOOPBACK  1
#define APPLE_IF_FAM_ETHERNET  2
#define APPLE_IF_FAM_SLIP      3
#define APPLE_IF_FAM_TUN       4
#define APPLE_IF_FAM_VLAN      5
#define APPLE_IF_FAM_PPP       6
#define APPLE_IF_FAM_PVC       7
#define APPLE_IF_FAM_DISC      8
#define APPLE_IF_FAM_MDECAP    9
#define APPLE_IF_FAM_GIF       10
#define APPLE_IF_FAM_FAITH     11	/* deprecated */
#define APPLE_IF_FAM_STF       12
#define APPLE_IF_FAM_FIREWIRE  13
#define APPLE_IF_FAM_BOND      14
#endif /* __APPLE__ */

/*
 * 72 was chosen below because it is the size of a TCP/IP
 * header (40) + the minimum mss (32).
 */
#define	IF_MINMTU	72
#define	IF_MAXMTU	65535

/*
 * Structures defining a network interface, providing a packet
 * transport mechanism (ala level 0 of the PUP protocols).
 *
 * Each interface accepts output datagrams of a specified maximum
 * length, and provides higher level routines with input datagrams
 * received from its medium.
 *
 * Output occurs when the routine if_output is called, with three parameters:
 *	(*ifp->if_output)(ifp, m, dst, rt)
 * Here m is the mbuf chain to be sent and dst is the destination address.
 * The output routine encapsulates the supplied datagram if necessary,
 * and then transmits it on its medium.
 *
 * On input, each interface unwraps the data received by it, and either
 * places it on the input queue of a internetwork datagram routine
 * and posts the associated software interrupt, or passes the datagram to a raw
 * packet input routine.
 *
 * Routines exist for locating interfaces by their addresses
 * or for locating a interface on a certain network, as well as more general
 * routing and gateway routines maintaining information used to locate
 * interfaces.  These routines live in the files if.c and route.c
 */

#define	IFNAMSIZ	16

/* This belongs up in socket.h or socketvar.h, depending on how far the
 *   event bubbles up.
 */

struct net_event_data {
	u_int32_t	if_family;
	u_int32_t	if_unit;
	char		if_name[IFNAMSIZ];
};

#if defined(__LP64__)
#include <sys/_types/_timeval32.h>
#define IF_DATA_TIMEVAL timeval32
#else
#define IF_DATA_TIMEVAL timeval
#endif

#pragma pack(4)

/*
 * Structure describing information about an interface
 * which may be of interest to management entities.
 */
struct if_data {
	/* generic interface information */
	u_char		ifi_type;	/* ethernet, tokenring, etc */
	u_char		ifi_typelen;	/* Length of frame type id */
	u_char		ifi_physical;	/* e.g., AUI, Thinnet, 10base-T, etc */
	u_char		ifi_addrlen;	/* media address length */
	u_char		ifi_hdrlen;	/* media header length */
	u_char		ifi_recvquota;	/* polling quota for receive intrs */
	u_char		ifi_xmitquota;	/* polling quota for xmit intrs */
	u_char		ifi_unused1;	/* for future use */
	u_int32_t	ifi_mtu;	/* maximum transmission unit */
	u_int32_t	ifi_metric;	/* routing metric (external only) */
	u_int32_t	ifi_baudrate;	/* linespeed */
	/* volatile statistics */
	u_int32_t	ifi_ipackets;	/* packets received on interface */
	u_int32_t	ifi_ierrors;	/* input errors on interface */
	u_int32_t	ifi_opackets;	/* packets sent on interface */
	u_int32_t	ifi_oerrors;	/* output errors on interface */
	u_int32_t	ifi_collisions;	/* collisions on csma interfaces */
	u_int32_t	ifi_ibytes;	/* total number of octets received */
	u_int32_t	ifi_obytes;	/* total number of octets sent */
	u_int32_t	ifi_imcasts;	/* packets received via multicast */
	u_int32_t	ifi_omcasts;	/* packets sent via multicast */
	u_int32_t	ifi_iqdrops;	/* dropped on input, this interface */
	u_int32_t	ifi_noproto;	/* destined for unsupported protocol */
	u_int32_t	ifi_recvtiming;	/* usec spent receiving when timing */
	u_int32_t	ifi_xmittiming;	/* usec spent xmitting when timing */
	struct IF_DATA_TIMEVAL ifi_lastchange;	/* time of last administrative change */
	u_int32_t	ifi_unused2;	/* used to be the default_proto */
	u_int32_t	ifi_hwassist;	/* HW offload capabilities */
	u_int32_t	ifi_reserved1;	/* for future use */
	u_int32_t	ifi_reserved2;	/* for future use */
};

/*
 * Structure describing information about an interface
 * which may be of interest to management entities.
 */
struct if_data64 {
	/* generic interface information */
	u_char		ifi_type;		/* ethernet, tokenring, etc */
	u_char		ifi_typelen;		/* Length of frame type id */
	u_char		ifi_physical;		/* e.g., AUI, Thinnet, 10base-T, etc */
	u_char		ifi_addrlen;		/* media address length */
	u_char		ifi_hdrlen;		/* media header length */
	u_char		ifi_recvquota;		/* polling quota for receive intrs */
	u_char		ifi_xmitquota;		/* polling quota for xmit intrs */
	u_char		ifi_unused1;		/* for future use */
	u_int32_t	ifi_mtu;		/* maximum transmission unit */
	u_int32_t	ifi_metric;		/* routing metric (external only) */
	u_int64_t	ifi_baudrate;		/* linespeed */
	/* volatile statistics */
	u_int64_t	ifi_ipackets;		/* packets received on interface */
	u_int64_t	ifi_ierrors;		/* input errors on interface */
	u_int64_t	ifi_opackets;		/* packets sent on interface */
	u_int64_t	ifi_oerrors;		/* output errors on interface */
	u_int64_t	ifi_collisions;		/* collisions on csma interfaces */
	u_int64_t	ifi_ibytes;		/* total number of octets received */
	u_int64_t	ifi_obytes;		/* total number of octets sent */
	u_int64_t	ifi_imcasts;		/* packets received via multicast */
	u_int64_t	ifi_omcasts;		/* packets sent via multicast */
	u_int64_t	ifi_iqdrops;		/* dropped on input, this interface */
	u_int64_t	ifi_noproto;		/* destined for unsupported protocol */
	u_int32_t	ifi_recvtiming;		/* usec spent receiving when timing */
	u_int32_t	ifi_xmittiming;		/* usec spent xmitting when timing */
	struct IF_DATA_TIMEVAL ifi_lastchange;	/* time of last administrative change */
};


#pragma pack()

/*
 * Structure defining a queue for a network interface.
 */
struct	ifqueue {
	void	*ifq_head;
	void	*ifq_tail;
	int	ifq_len;
	int	ifq_maxlen;
	int	ifq_drops;
};






#endif /* !_NET_IF_VAR_H_ */
