/*-
 * Copyright (c) 1998 Brian Somers <brian@Awfulhak.org>
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
 *
 * $FreeBSD: stable/2.2/usr.sbin/ppp/iface.h 50952 1999-09-05 11:54:50Z peter $
 */

struct iface_addr {
  struct in_addr ifa;		/* local address */
  struct in_addr mask;		/* netmask */
  int bits;			/* netmask bits - -1 if not contiguous */
  struct in_addr brd;		/* peer address */
};

struct iface {
  char *name;			/* Interface name (malloc'd) */
  int index;			/* Interface index */
  int flags;			/* Interface flags (IFF_*) */

  int in_addrs;			/* How many in_addr's */
  struct iface_addr *in_addr;	/* Array of addresses (malloc'd) */
};

#define IFACE_CLEAR_ALL		0	/* Nuke 'em all */
#define IFACE_CLEAR_ALIASES	1	/* Leave the IPCP address */

#define IFACE_ADD_LAST		0	/* Just another alias */
#define IFACE_ADD_FIRST		1	/* The IPCP address */
#define IFACE_FORCE_ADD		2	/* OR'd with IFACE_ADD_{FIRST,LAST} */

#define iface_Clear iface_inClear	/* Same for now */

extern struct iface *iface_Create(const char *name);
extern void iface_inClear(struct iface *, int);
extern int iface_inAdd(struct iface *, struct in_addr, struct in_addr,
                     struct in_addr, int);
extern int iface_inDelete(struct iface *, struct in_addr);
extern int iface_Show(struct cmdargs const *);
extern void iface_Destroy(struct iface *);
