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 */
42
43#ifndef _NETGRAPH_NG_MPPC_H_
44#define _NETGRAPH_NG_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_56 0x00000080 /* use 56 bit key */
64#define MPPE_128 0x00000040 /* use 128 bit key */
65#define MPPE_BITS 0x000000e0 /* mppe encryption bits */
66#define MPPE_STATELESS 0x01000000 /* use stateless mode */
67#define MPPC_VALID_BITS 0x010000e1 /* possibly valid bits */
68
69/* Config struct (per-direction) */
70struct ng_mppc_config {
71 u_char enable; /* enable */
72 u_int32_t bits; /* config bits */
73 u_char startkey[MPPE_KEY_LEN]; /* start key */
74};
75
76/* Netgraph commands */
77enum {
78 NGM_MPPC_CONFIG_COMP = 1,
79 NGM_MPPC_CONFIG_DECOMP,
80 NGM_MPPC_RESETREQ, /* sent either way! */
81};
82
83#endif /* _NETGRAPH_NG_MPPC_H_ */