sys/netgraph7/ng_pptpgre.h

   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: src/sys/netgraph/ng_pptpgre.h,v 1.10 2008/03/24 22:55:22 mav Exp $
  41  * $DragonFly: src/sys/netgraph7/ng_pptpgre.h,v 1.2 2008/06/26 23:05:35 dillon Exp $
  42  * $Whistle: ng_pptpgre.h,v 1.3 1999/12/08 00:11:36 archie Exp $
  43  */
  44
  45 #ifndef _NETGRAPH_NG_PPTPGRE_H_
  46 #define _NETGRAPH_NG_PPTPGRE_H_
  47
  48 /* Node type name and magic cookie */
  49 #define NG_PPTPGRE_NODE_TYPE    "pptpgre"
  50 #define NGM_PPTPGRE_COOKIE      1082548365
  51
  52 /* Hook names */
  53 #define NG_PPTPGRE_HOOK_UPPER   "upper"         /* to upper layers */
  54 #define NG_PPTPGRE_HOOK_LOWER   "lower"         /* to lower layers */
  55
  56 /* Session hooks: prefix plus hex session ID, e.g., "session_3e14" */
  57 #define NG_PPTPGRE_HOOK_SESSION_P       "session_"
  58 #define NG_PPTPGRE_HOOK_SESSION_F       "session_%04x"
  59
  60 /* Configuration for a session */
  61 struct ng_pptpgre_conf {
  62         u_char          enabled;        /* enables traffic flow */
  63         u_char          enableDelayedAck;/* enables delayed acks */
  64         u_char          enableAlwaysAck;/* always include ack with data */
  65         u_char          enableWindowing;/* enable windowing algorithm */
  66         u_int16_t       cid;            /* my call id */
  67         u_int16_t       peerCid;        /* peer call id */
  68         u_int16_t       recvWin;        /* peer recv window size */
  69         u_int16_t       peerPpd;        /* peer packet processing delay
  70                                            (in units of 1/10 of a second) */
  71 };
  72
  73 /* Keep this in sync with the above structure definition */
  74 #define NG_PPTPGRE_CONF_TYPE_INFO       {                       \
  75           { "enabled",          &ng_parse_uint8_type    },      \
  76           { "enableDelayedAck", &ng_parse_uint8_type    },      \
  77           { "enableAlwaysAck",  &ng_parse_uint8_type    },      \
  78           { "enableWindowing",  &ng_parse_uint8_type    },      \
  79           { "cid",              &ng_parse_hint16_type   },      \
  80           { "peerCid",          &ng_parse_hint16_type   },      \
  81           { "recvWin",          &ng_parse_uint16_type   },      \
  82           { "peerPpd",          &ng_parse_uint16_type   },      \
  83           { NULL }                                              \
  84 }
  85
  86 /* Statistics struct */
  87 struct ng_pptpgre_stats {
  88         u_int32_t xmitPackets;          /* number of GRE packets xmit */
  89         u_int32_t xmitOctets;           /* number of GRE octets xmit */
  90         u_int32_t xmitLoneAcks;         /* ack-only packets transmitted */
  91         u_int32_t xmitDrops;            /* xmits dropped due to full window */
  92         u_int32_t xmitTooBig;           /* xmits dropped because too big */
  93         u_int32_t recvPackets;          /* number of GRE packets rec'd */
  94         u_int32_t recvOctets;           /* number of GRE octets rec'd */
  95         u_int32_t recvRunts;            /* too short packets rec'd */
  96         u_int32_t recvBadGRE;           /* bogus packets rec'd (bad GRE hdr) */
  97         u_int32_t recvBadAcks;          /* bogus ack's rec'd in GRE header */
  98         u_int32_t recvBadCID;           /* pkts with unknown call ID rec'd */
  99         u_int32_t recvOutOfOrder;       /* packets rec'd out of order */
 100         u_int32_t recvDuplicates;       /* packets rec'd with duplicate seq # */
 101         u_int32_t recvLoneAcks;         /* ack-only packets rec'd */
 102         u_int32_t recvAckTimeouts;      /* times peer failed to ack in time */
 103         u_int32_t memoryFailures;       /* times we couldn't allocate memory */
 104 };
 105
 106 /* Keep this in sync with the above structure definition */
 107 #define NG_PPTPGRE_STATS_TYPE_INFO      {                       \
 108           { "xmitPackets",      &ng_parse_uint32_type   },      \
 109           { "xmitOctets",       &ng_parse_uint32_type   },      \
 110           { "xmitLoneAcks",     &ng_parse_uint32_type   },      \
 111           { "xmitDrops",        &ng_parse_uint32_type   },      \
 112           { "xmitTooBig",       &ng_parse_uint32_type   },      \
 113           { "recvPackets",      &ng_parse_uint32_type   },      \
 114           { "recvOctets",       &ng_parse_uint32_type   },      \
 115           { "recvRunts",        &ng_parse_uint32_type   },      \
 116           { "recvBadGRE",       &ng_parse_uint32_type   },      \
 117           { "recvBadAcks",      &ng_parse_uint32_type   },      \
 118           { "recvBadCID",       &ng_parse_uint32_type   },      \
 119           { "recvOutOfOrder",   &ng_parse_uint32_type   },      \
 120           { "recvDuplicates",   &ng_parse_uint32_type   },      \
 121           { "recvLoneAcks",     &ng_parse_uint32_type   },      \
 122           { "recvAckTimeouts",  &ng_parse_uint32_type   },      \
 123           { "memoryFailures",   &ng_parse_uint32_type   },      \
 124           { NULL }                                              \
 125 }
 126
 127 /* Netgraph commands */
 128 enum {
 129         NGM_PPTPGRE_SET_CONFIG = 1,     /* supply a struct ng_pptpgre_conf */
 130         NGM_PPTPGRE_GET_CONFIG,         /* returns a struct ng_pptpgre_conf */
 131         NGM_PPTPGRE_GET_STATS,          /* returns struct ng_pptpgre_stats */
 132         NGM_PPTPGRE_CLR_STATS,          /* clears stats */
 133         NGM_PPTPGRE_GETCLR_STATS,       /* returns & clears stats */
 134 };
 135
 136 #endif /* _NETGRAPH_NG_PPTPGRE_H_ */