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_async.h

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    1 
    2 /*
    3  * ng_async.h
    4  *
    5  * Copyright (c) 1996-1999 Whistle Communications, Inc.
    6  * All rights reserved.
    7  * 
    8  * Subject to the following obligations and disclaimer of warranty, use and
    9  * redistribution of this software, in source or object code forms, with or
   10  * without modifications are expressly permitted by Whistle Communications;
   11  * provided, however, that:
   12  * 1. Any and all reproductions of the source or object code must include the
   13  *    copyright notice above and the following disclaimer of warranties; and
   14  * 2. No rights are granted, in any manner or form, to use Whistle
   15  *    Communications, Inc. trademarks, including the mark "WHISTLE
   16  *    COMMUNICATIONS" on advertising, endorsements, or otherwise except as
   17  *    such appears in the above copyright notice or in the software.
   18  * 
   19  * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
   20  * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
   21  * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
   22  * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
   23  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
   24  * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
   25  * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
   26  * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
   27  * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
   28  * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
   29  * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
   30  * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
   31  * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY
   32  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   33  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   34  * THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
   35  * OF SUCH DAMAGE.
   36  *
   37  * Author: Archie Cobbs <archie@freebsd.org>
   38  *
   39  * $FreeBSD: stable/3/sys/netgraph/ng_async.h 67532 2000-10-24 22:45:12Z julian $
   40  * $Whistle: ng_async.h,v 1.5 1999/01/25 01:17:14 archie Exp $
   41  */
   42 
   43 #ifndef _NETGRAPH_ASYNC_H_
   44 #define _NETGRAPH_ASYNC_H_
   45 
   46 /* Type name and cookie */
   47 #define NG_ASYNC_NODE_TYPE      "async"
   48 #define NGM_ASYNC_COOKIE        886473717
   49 
   50 /* Hook names */
   51 #define NG_ASYNC_HOOK_SYNC      "sync"  /* Sync frames */
   52 #define NG_ASYNC_HOOK_ASYNC     "async" /* Async-encoded frames */
   53 
   54 /* Maximum receive size bounds (for both sync and async sides) */
   55 #define NG_ASYNC_MIN_MRU        1
   56 #define NG_ASYNC_MAX_MRU        8192
   57 #define NG_ASYNC_DEFAULT_MRU    1600
   58 
   59 /* Frame statistics */
   60 struct ng_async_stat {
   61         u_int32_t       syncOctets;
   62         u_int32_t       syncFrames;
   63         u_int32_t       syncOverflows;
   64         u_int32_t       asyncOctets;
   65         u_int32_t       asyncFrames;
   66         u_int32_t       asyncRunts;
   67         u_int32_t       asyncOverflows;
   68         u_int32_t       asyncBadCheckSums;
   69 };
   70 
   71 /* Keep this in sync with the above structure definition */
   72 #define NG_ASYNC_STATS_TYPE_INFO        {                       \
   73         {                                                       \
   74           { "syncOctets",       &ng_parse_int32_type    },      \
   75           { "syncFrames",       &ng_parse_int32_type    },      \
   76           { "syncOverflows",    &ng_parse_int32_type    },      \
   77           { "asyncOctets",      &ng_parse_int32_type    },      \
   78           { "asyncFrames",      &ng_parse_int32_type    },      \
   79           { "asyncRunts",       &ng_parse_int32_type    },      \
   80           { "asyncOverflows",   &ng_parse_int32_type    },      \
   81           { "asyncBadCheckSums",&ng_parse_int32_type    },      \
   82           { NULL },                                             \
   83         }                                                       \
   84 }
   85 
   86 /* Configuration for this node */
   87 struct ng_async_cfg {
   88         u_char          enabled;        /* Turn encoding on/off */
   89         u_int16_t       amru;           /* Max receive async frame length */
   90         u_int16_t       smru;           /* Max receive sync frame length */
   91         u_int32_t       accm;           /* ACCM encoding */
   92 };
   93 
   94 /* Keep this in sync with the above structure definition */
   95 #define NG_ASYNC_CONFIG_TYPE_INFO       {                       \
   96         {                                                       \
   97           { "enabled",          &ng_parse_int8_type     },      \
   98           { "amru",             &ng_parse_int16_type    },      \
   99           { "smru",             &ng_parse_int16_type    },      \
  100           { "accm",             &ng_parse_int32_type    },      \
  101           { NULL },                                             \
  102         }                                                       \
  103 }
  104 
  105 /* Commands */
  106 enum {
  107         NGM_ASYNC_CMD_GET_STATS = 1,    /* returns struct ng_async_stat */
  108         NGM_ASYNC_CMD_CLR_STATS,
  109         NGM_ASYNC_CMD_SET_CONFIG,       /* takes struct ng_async_cfg */
  110         NGM_ASYNC_CMD_GET_CONFIG,       /* returns struct ng_async_cfg */
  111 };
  112 
  113 #endif /* _NETGRAPH_ASYNC_H_ */

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