/*
 * Copyright (c) 2003 Research Engineering Development, Inc.
 * Author: Alfred Perlstein <alfred@FreeBSD.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.
 *
 * $Id: mtrie.h,v 1.3 2003/05/07 05:01:37 bright Exp $
 *
 */
#ifndef _MTRIE_H_
#define _MTRIE_H_

struct mtrie;

typedef struct mtrie * mtrie_t;

/* allocate an mtrie.  flags should be 0 for now. */
int	mtrie_alloc(mtrie_t *, int);
/* free an mtrie */
void	mtrie_free(mtrie_t);

/*
 * insert an entry into the mtrie, args should be:
 *   the mtrie, ip (in network byte order), netmask (8, 16, 24), data.
 * NB: data can not be NULL.
 * returns 0 on success, and -1 on failure.  failure will likely
 * be from inability to allocate more memory.
 */
int	mtrie_insert(mtrie_t, uint32_t, uint8_t, void *);
/*
 * Lookup an ip in the mtrie, args should be:
 *   the mtrie, ip (in network byte order), pointer to data pointer.
 * returns 0 on success and sets data pointer to value.
 * returns -1 on failure and sets data pointer to NULL.
 */
int	mtrie_lookup(mtrie_t, uint32_t, void **);

#endif /* _MTRIE_H_ */