ng_mppc.h revision 59109 
1
2/*
3 * ng_mppc.h
4 *
5 * Copyright (c) 1996-2000 Whistle Communications, Inc.
6 * All rights reserved.
7 *
8 * Subject to the following obligations and disclaimer of warranty, use and
9 * redistribution of this software, in source or object code forms, with or
10 * without modifications are expressly permitted by Whistle Communications;
11 * provided, however, that:
12 * 1. Any and all reproductions of the source or object code must include the
13 *    copyright notice above and the following disclaimer of warranties; and
14 * 2. No rights are granted, in any manner or form, to use Whistle
15 *    Communications, Inc. trademarks, including the mark "WHISTLE
16 *    COMMUNICATIONS" on advertising, endorsements, or otherwise except as
17 *    such appears in the above copyright notice or in the software.
18 *
19 * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
20 * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
21 * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
22 * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
23 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
24 * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
25 * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
26 * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
27 * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
28 * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
29 * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
30 * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
31 * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY
32 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
33 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
34 * THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
35 * OF SUCH DAMAGE.
36 *
37 * Author: Archie Cobbs <archie@whistle.com>
38 *
39 * $Whistle: ng_mppc.h,v 1.3 2000/02/12 01:17:22 archie Exp $
40 * $FreeBSD: head/sys/netgraph/ng_mppc.h 59109 2000-04-09 21:04:55Z archie $
41 */
42
43#ifndef _NETGRAPH_MPPC_H_
44#define _NETGRAPH_MPPC_H_
45
46/* Node type name and magic cookie */
47#define NG_MPPC_NODE_TYPE	"mppc"
48#define NGM_MPPC_COOKIE		942886745
49
50/* Hook names */
51#define NG_MPPC_HOOK_COMP	"comp"		/* compression hook */
52#define NG_MPPC_HOOK_DECOMP	"decomp"	/* decompression hook */
53
54/* Length of MPPE key */
55#define MPPE_KEY_LEN		16
56
57/* Max expansion due to MPPC header and compression algorithm */
58#define MPPC_MAX_BLOWUP(n)	((n) * 9 / 8 + 26)
59
60/* MPPC/MPPE PPP negotiation bits */
61#define MPPC_BIT		0x00000001	/* mppc compression bits */
62#define MPPE_40			0x00000020	/* use 40 bit key */
63#define MPPE_128		0x00000040	/* use 128 bit key */
64#define MPPE_BITS		0x00000060	/* mppe encryption bits */
65#define MPPE_STATELESS		0x01000000	/* use stateless mode */
66#define MPPC_VALID_BITS		0x01000061	/* possibly valid bits */
67
68/* Config struct (per-direction) */
69struct ng_mppc_config {
70	u_char		enable;			/* enable */
71	u_int32_t	bits;			/* config bits */
72	u_char		startkey[MPPE_KEY_LEN];	/* start key */
73};
74
75/* Netgraph commands */
76enum {
77	NGM_MPPC_CONFIG_COMP = 1,
78	NGM_MPPC_CONFIG_DECOMP,
79	NGM_MPPC_RESETREQ,			/* sent either way! */
80};
81
82#endif /* _NETGRAPH_MPPC_H_ */
83
84