The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/netgraph/ng_mppc.h

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    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: releng/9.2/sys/netgraph/ng_mppc.h 139823 2005-01-07 01:45:51Z imp $
   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 

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