1/*
2 * ng_mppc.h
3 */
4
5/*-
6 * Copyright (c) 1996-2000 Whistle Communications, Inc.
7 * All rights reserved.
8 *
9 * Subject to the following obligations and disclaimer of warranty, use and
10 * redistribution of this software, in source or object code forms, with or
11 * without modifications are expressly permitted by Whistle Communications;
12 * provided, however, that:
13 * 1. Any and all reproductions of the source or object code must include the
14 *    copyright notice above and the following disclaimer of warranties; and
15 * 2. No rights are granted, in any manner or form, to use Whistle
16 *    Communications, Inc. trademarks, including the mark "WHISTLE
17 *    COMMUNICATIONS" on advertising, endorsements, or otherwise except as
18 *    such appears in the above copyright notice or in the software.
19 *
20 * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
21 * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
22 * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
23 * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
24 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
25 * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
26 * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
27 * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
28 * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
29 * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
30 * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
31 * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
32 * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY
33 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
34 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
35 * THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
36 * OF SUCH DAMAGE.
37 *
38 * Author: Archie Cobbs <archie@freebsd.org>
39 *
40 * $Whistle: ng_mppc.h,v 1.3 2000/02/12 01:17:22 archie Exp $
41 * $FreeBSD$
42 */
43
44#ifndef _NETGRAPH_NG_MPPC_H_
45#define _NETGRAPH_NG_MPPC_H_
46
47/* Node type name and magic cookie */
48#define NG_MPPC_NODE_TYPE	"mppc"
49#define NGM_MPPC_COOKIE		942886745
50
51/* Hook names */
52#define NG_MPPC_HOOK_COMP	"comp"		/* compression hook */
53#define NG_MPPC_HOOK_DECOMP	"decomp"	/* decompression hook */
54
55/* Length of MPPE key */
56#define MPPE_KEY_LEN		16
57
58/* Max expansion due to MPPC header and compression algorithm */
59#define MPPC_MAX_BLOWUP(n)	((n) * 9 / 8 + 26)
60
61/* MPPC/MPPE PPP negotiation bits */
62#define MPPC_BIT		0x00000001	/* mppc compression bits */
63#define MPPE_40			0x00000020	/* use 40 bit key */
64#define MPPE_56			0x00000080	/* use 56 bit key */
65#define MPPE_128		0x00000040	/* use 128 bit key */
66#define MPPE_BITS		0x000000e0	/* mppe encryption bits */
67#define MPPE_STATELESS		0x01000000	/* use stateless mode */
68#define MPPC_VALID_BITS		0x010000e1	/* possibly valid bits */
69
70/* Config struct (per-direction) */
71struct ng_mppc_config {
72	u_char		enable;			/* enable */
73	u_int32_t	bits;			/* config bits */
74	u_char		startkey[MPPE_KEY_LEN];	/* start key */
75};
76
77/* Netgraph commands */
78enum {
79	NGM_MPPC_CONFIG_COMP = 1,
80	NGM_MPPC_CONFIG_DECOMP,
81	NGM_MPPC_RESETREQ,			/* sent either way! */
82};
83
84#endif /* _NETGRAPH_NG_MPPC_H_ */
85
86