sys/netgraph7/ng_mppc.h

   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: src/sys/netgraph/ng_mppc.h,v 1.5 2005/01/07 01:45:39 imp Exp $
  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) */
  71 struct 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 */
  78 enum {
  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