text: /*
   * 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.
   *
   *	@(#)if.h	8.1 (Berkeley) 6/10/93
   * $FreeBSD: src/sys/net/if.h,v 1.49.2.1 1999/08/29 16:28:15 peter Exp $
   */
  
  #ifndef _NET_IF_H_
  #define	_NET_IF_H_
   
  /*
   * <net/if.h> does not depend on <sys/time.h> on most other systems.  This
   * helps userland compatability.  (struct timeval ifi_lastchange)
   */
  #ifndef KERNEL
  #include <pcap-stdinc.h>
  #endif
  
  /*
   * 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_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_long	ifi_mtu;		/* maximum transmission unit */
  	u_long	ifi_metric;		/* routing metric (external only) */
  	u_long	ifi_baudrate;		/* linespeed */
  	/* volatile statistics */
  	u_long	ifi_ipackets;		/* packets received on interface */
  	u_long	ifi_ierrors;		/* input errors on interface */
  	u_long	ifi_opackets;		/* packets sent on interface */
  	u_long	ifi_oerrors;		/* output errors on interface */
  	u_long	ifi_collisions;		/* collisions on csma interfaces */
  	u_long	ifi_ibytes;		/* total number of octets received */
  	u_long	ifi_obytes;		/* total number of octets sent */
  	u_long	ifi_imcasts;		/* packets received via multicast */
  	u_long	ifi_omcasts;		/* packets sent via multicast */
  	u_long	ifi_iqdrops;		/* dropped on input, this interface */
  	u_long	ifi_noproto;		/* destined for unsupported protocol */
  	u_long	ifi_recvtiming;		/* usec spent receiving when timing */
  	u_long	ifi_xmittiming;		/* usec spent xmitting when timing */
  	struct	timeval ifi_lastchange;	/* time of last administrative change */
  };
  
  /* ws2tcpip.h has interface flags: IFF_* */
  #if 0
  #define	IFF_UP		0x1		/* interface is up */
  #define	IFF_BROADCAST	0x2		/* broadcast address valid */
  #define	IFF_DEBUG	0x4		/* turn on debugging */
  #define	IFF_LOOPBACK	0x8		/* is a loopback net */
  #define	IFF_POINTOPOINT	0x10		/* interface is point-to-point link */
  /*#define IFF_NOTRAILERS 0x20		 * obsolete: avoid use of trailers */
  #define	IFF_RUNNING	0x40		/* resources allocated */
  #define	IFF_NOARP	0x80		/* no address resolution protocol */
  #define	IFF_PROMISC	0x100		/* receive all packets */
  #define	IFF_ALLMULTI	0x200		/* receive all multicast packets */
  #define	IFF_OACTIVE	0x400		/* transmission in progress */
  #define	IFF_SIMPLEX	0x800		/* can't hear own transmissions */
  #define	IFF_LINK0	0x1000		/* per link layer defined bit */
  #define	IFF_LINK1	0x2000		/* per link layer defined bit */
  #define	IFF_LINK2	0x4000		/* per link layer defined bit */
  #define	IFF_ALTPHYS	IFF_LINK2	/* use alternate physical connection */
  #define	IFF_MULTICAST	0x8000		/* supports multicast */
  #endif /* 0 */
  
  /* flags set internally only: */
  #define	IFF_CANTCHANGE \
  	(IFF_BROADCAST|IFF_POINTOPOINT|IFF_RUNNING|IFF_OACTIVE|\
  	    IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI)
  
  #define	IFQ_MAXLEN	50
  #define	IFNET_SLOWHZ	1		/* granularity is 1 second */
  
  /*
   * Message format for use in obtaining information about interfaces
   * from getkerninfo and the routing socket
   */
  struct if_msghdr {
  	u_short	ifm_msglen;	/* to skip over non-understood messages */
  	u_char	ifm_version;	/* future binary compatability */
  	u_char	ifm_type;	/* message type */
  	int	ifm_addrs;	/* like rtm_addrs */
  	int	ifm_flags;	/* value of if_flags */
  	u_short	ifm_index;	/* index for associated ifp */
  	struct	if_data ifm_data;/* statistics and other data about if */
  };
  
  /*
   * Message format for use in obtaining information about interface addresses
   * from getkerninfo and the routing socket
   */
  struct ifa_msghdr {
  	u_short	ifam_msglen;	/* to skip over non-understood messages */
  	u_char	ifam_version;	/* future binary compatability */
  	u_char	ifam_type;	/* message type */
  	int	ifam_addrs;	/* like rtm_addrs */
  	int	ifam_flags;	/* value of ifa_flags */
  	u_short	ifam_index;	/* index for associated ifp */
  	int	ifam_metric;	/* value of ifa_metric */
  };
  
  /*
   * Message format for use in obtaining information about multicast addresses
   * from the routing socket
   */
  struct ifma_msghdr {
  	u_short	ifmam_msglen;	/* to skip over non-understood messages */
  	u_char	ifmam_version;	/* future binary compatability */
  	u_char	ifmam_type;	/* message type */
  	int	ifmam_addrs;	/* like rtm_addrs */
  	int	ifmam_flags;	/* value of ifa_flags */
  	u_short	ifmam_index;	/* index for associated ifp */
  };
  
  /*
   * Interface request structure used for socket
   * ioctl's.  All interface ioctl's must have parameter
   * definitions which begin with ifr_name.  The
   * remainder may be interface specific.
   */
  struct	ifreq {
  #define	IFNAMSIZ	16
  	char	ifr_name[IFNAMSIZ];		/* if name, e.g. "en0" */
  	union {
  		struct	sockaddr ifru_addr;
  		struct	sockaddr ifru_dstaddr;
  		struct	sockaddr ifru_broadaddr;
  		short	ifru_flags;
  		int	ifru_metric;
  		int	ifru_mtu;
  		int	ifru_phys;
  		int	ifru_media;
  		caddr_t	ifru_data;
  	} ifr_ifru;
  #define	ifr_addr	ifr_ifru.ifru_addr	/* address */
  #define	ifr_dstaddr	ifr_ifru.ifru_dstaddr	/* other end of p-to-p link */
  #define	ifr_broadaddr	ifr_ifru.ifru_broadaddr	/* broadcast address */
  #define	ifr_flags	ifr_ifru.ifru_flags	/* flags */
  #define	ifr_metric	ifr_ifru.ifru_metric	/* metric */
  #define	ifr_mtu		ifr_ifru.ifru_mtu	/* mtu */
  #define ifr_phys	ifr_ifru.ifru_phys	/* physical wire */
  #define ifr_media	ifr_ifru.ifru_media	/* physical media */
  #define	ifr_data	ifr_ifru.ifru_data	/* for use by interface */
  };
  
  #define	_SIZEOF_ADDR_IFREQ(ifr) \
  	((ifr).ifr_addr.sa_len > sizeof(struct sockaddr) ? \
  	 (sizeof(struct ifreq) - sizeof(struct sockaddr) + \
  	  (ifr).ifr_addr.sa_len) : sizeof(struct ifreq))
  
  struct ifaliasreq {
  	char	ifra_name[IFNAMSIZ];		/* if name, e.g. "en0" */
  	struct	sockaddr ifra_addr;
  	struct	sockaddr ifra_broadaddr;
  	struct	sockaddr ifra_mask;
  };
  
  struct ifmediareq {
  	char	ifm_name[IFNAMSIZ];	/* if name, e.g. "en0" */
  	int	ifm_current;		/* current media options */
  	int	ifm_mask;		/* don't care mask */
  	int	ifm_status;		/* media status */
  	int	ifm_active;		/* active options */
  	int	ifm_count;		/* # entries in ifm_ulist array */
  	int	*ifm_ulist;		/* media words */
  };
  /*
   * Structure used in SIOCGIFCONF request.
   * Used to retrieve interface configuration
   * for machine (useful for programs which
   * must know all networks accessible).
   */
  struct	ifconf {
  	int	ifc_len;		/* size of associated buffer */
  	union {
  		caddr_t	ifcu_buf;
  		struct	ifreq *ifcu_req;
  	} ifc_ifcu;
  #define	ifc_buf	ifc_ifcu.ifcu_buf	/* buffer address */
  #define	ifc_req	ifc_ifcu.ifcu_req	/* array of structures returned */
  };
  
  #ifdef KERNEL
  #ifdef MALLOC_DECLARE
  MALLOC_DECLARE(M_IFADDR);
  MALLOC_DECLARE(M_IFMADDR);
  #endif
  #endif
  
  /* XXX - this should go away soon */
  #ifdef KERNEL
  #include <net/if_var.h>
  #endif
  
  #endif /* !_NET_IF_H_ */
  