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_pptpgre.h

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    1 /*
    2  * ng_pptpgre.h
    3  */
    4 
    5 /*-
    6  * Copyright (c) 1999 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  * $FreeBSD: releng/9.2/sys/netgraph/ng_pptpgre.h 177587 2008-03-24 22:55:22Z mav $
   41  * $Whistle: ng_pptpgre.h,v 1.3 1999/12/08 00:11:36 archie Exp $
   42  */
   43 
   44 #ifndef _NETGRAPH_NG_PPTPGRE_H_
   45 #define _NETGRAPH_NG_PPTPGRE_H_
   46 
   47 /* Node type name and magic cookie */
   48 #define NG_PPTPGRE_NODE_TYPE    "pptpgre"
   49 #define NGM_PPTPGRE_COOKIE      1082548365
   50 
   51 /* Hook names */
   52 #define NG_PPTPGRE_HOOK_UPPER   "upper"         /* to upper layers */
   53 #define NG_PPTPGRE_HOOK_LOWER   "lower"         /* to lower layers */
   54 
   55 /* Session hooks: prefix plus hex session ID, e.g., "session_3e14" */
   56 #define NG_PPTPGRE_HOOK_SESSION_P       "session_"
   57 #define NG_PPTPGRE_HOOK_SESSION_F       "session_%04x"
   58 
   59 /* Configuration for a session */
   60 struct ng_pptpgre_conf {
   61         u_char          enabled;        /* enables traffic flow */
   62         u_char          enableDelayedAck;/* enables delayed acks */
   63         u_char          enableAlwaysAck;/* always include ack with data */
   64         u_char          enableWindowing;/* enable windowing algorithm */
   65         u_int16_t       cid;            /* my call id */
   66         u_int16_t       peerCid;        /* peer call id */
   67         u_int16_t       recvWin;        /* peer recv window size */
   68         u_int16_t       peerPpd;        /* peer packet processing delay
   69                                            (in units of 1/10 of a second) */
   70 };
   71 
   72 /* Keep this in sync with the above structure definition */
   73 #define NG_PPTPGRE_CONF_TYPE_INFO       {                       \
   74           { "enabled",          &ng_parse_uint8_type    },      \
   75           { "enableDelayedAck", &ng_parse_uint8_type    },      \
   76           { "enableAlwaysAck",  &ng_parse_uint8_type    },      \
   77           { "enableWindowing",  &ng_parse_uint8_type    },      \
   78           { "cid",              &ng_parse_hint16_type   },      \
   79           { "peerCid",          &ng_parse_hint16_type   },      \
   80           { "recvWin",          &ng_parse_uint16_type   },      \
   81           { "peerPpd",          &ng_parse_uint16_type   },      \
   82           { NULL }                                              \
   83 }
   84 
   85 /* Statistics struct */
   86 struct ng_pptpgre_stats {
   87         u_int32_t xmitPackets;          /* number of GRE packets xmit */
   88         u_int32_t xmitOctets;           /* number of GRE octets xmit */
   89         u_int32_t xmitLoneAcks;         /* ack-only packets transmitted */
   90         u_int32_t xmitDrops;            /* xmits dropped due to full window */
   91         u_int32_t xmitTooBig;           /* xmits dropped because too big */
   92         u_int32_t recvPackets;          /* number of GRE packets rec'd */
   93         u_int32_t recvOctets;           /* number of GRE octets rec'd */
   94         u_int32_t recvRunts;            /* too short packets rec'd */
   95         u_int32_t recvBadGRE;           /* bogus packets rec'd (bad GRE hdr) */
   96         u_int32_t recvBadAcks;          /* bogus ack's rec'd in GRE header */
   97         u_int32_t recvBadCID;           /* pkts with unknown call ID rec'd */
   98         u_int32_t recvOutOfOrder;       /* packets rec'd out of order */
   99         u_int32_t recvDuplicates;       /* packets rec'd with duplicate seq # */
  100         u_int32_t recvLoneAcks;         /* ack-only packets rec'd */
  101         u_int32_t recvAckTimeouts;      /* times peer failed to ack in time */
  102         u_int32_t memoryFailures;       /* times we couldn't allocate memory */
  103 };
  104 
  105 /* Keep this in sync with the above structure definition */
  106 #define NG_PPTPGRE_STATS_TYPE_INFO      {                       \
  107           { "xmitPackets",      &ng_parse_uint32_type   },      \
  108           { "xmitOctets",       &ng_parse_uint32_type   },      \
  109           { "xmitLoneAcks",     &ng_parse_uint32_type   },      \
  110           { "xmitDrops",        &ng_parse_uint32_type   },      \
  111           { "xmitTooBig",       &ng_parse_uint32_type   },      \
  112           { "recvPackets",      &ng_parse_uint32_type   },      \
  113           { "recvOctets",       &ng_parse_uint32_type   },      \
  114           { "recvRunts",        &ng_parse_uint32_type   },      \
  115           { "recvBadGRE",       &ng_parse_uint32_type   },      \
  116           { "recvBadAcks",      &ng_parse_uint32_type   },      \
  117           { "recvBadCID",       &ng_parse_uint32_type   },      \
  118           { "recvOutOfOrder",   &ng_parse_uint32_type   },      \
  119           { "recvDuplicates",   &ng_parse_uint32_type   },      \
  120           { "recvLoneAcks",     &ng_parse_uint32_type   },      \
  121           { "recvAckTimeouts",  &ng_parse_uint32_type   },      \
  122           { "memoryFailures",   &ng_parse_uint32_type   },      \
  123           { NULL }                                              \
  124 }
  125 
  126 /* Netgraph commands */
  127 enum {
  128         NGM_PPTPGRE_SET_CONFIG = 1,     /* supply a struct ng_pptpgre_conf */
  129         NGM_PPTPGRE_GET_CONFIG,         /* returns a struct ng_pptpgre_conf */
  130         NGM_PPTPGRE_GET_STATS,          /* returns struct ng_pptpgre_stats */
  131         NGM_PPTPGRE_CLR_STATS,          /* clears stats */
  132         NGM_PPTPGRE_GETCLR_STATS,       /* returns & clears stats */
  133 };
  134 
  135 #endif /* _NETGRAPH_NG_PPTPGRE_H_ */

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