1/*	$FreeBSD$	*/
2/* $OpenBSD: deflate.h,v 1.3 2002/03/14 01:26:51 millert Exp $ */
3
4/*-
5 * Copyright (c) 2001 Jean-Jacques Bernard-Gundol (jj@wabbitt.org)
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 *   notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *   notice, this list of conditions and the following disclaimer in the
15 *   documentation and/or other materials provided with the distribution.
16 * 3. The name of the author may not be used to endorse or promote products
17 *   derived from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31/*
32 * Definition for the wrapper around the deflate compression
33 * algorithm used in /sys/crypto
34 */
35
36#ifndef _CRYPTO_DEFLATE_H_
37#define _CRYPTO_DEFLATE_H_
38
39#include <net/zlib.h>
40
41#define Z_METHOD	8
42#define Z_MEMLEVEL	8
43#define MINCOMP		2	/* won't be used, but must be defined */
44#define ZBUF		10
45
46u_int32_t deflate_global(u_int8_t *, u_int32_t, int, u_int8_t **);
47void *z_alloc(void *, u_int, u_int);
48void z_free(void *, void *);
49
50/*
51 * We are going to use a combined allocation to hold the metadata
52 * from the struct immediately followed by the real application data.
53 */
54struct deflate_buf {
55	struct deflate_buf *next;
56	uint32_t size;
57	uint8_t data[];
58};
59
60#endif /* _CRYPTO_DEFLATE_H_ */
61