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  * ng_async.h
    3  */
    4 
    5 /*-
    6  * Copyright (c) 1996-1999 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/11.1/sys/netgraph/ng_async.h 139823 2005-01-07 01:45:51Z imp $
   41  * $Whistle: ng_async.h,v 1.5 1999/01/25 01:17:14 archie Exp $
   42  */
   43 
   44 #ifndef _NETGRAPH_NG_ASYNC_H_
   45 #define _NETGRAPH_NG_ASYNC_H_
   46 
   47 /* Type name and cookie */
   48 #define NG_ASYNC_NODE_TYPE      "async"
   49 #define NGM_ASYNC_COOKIE        886473717
   50 
   51 /* Hook names */
   52 #define NG_ASYNC_HOOK_SYNC      "sync"  /* Sync frames */
   53 #define NG_ASYNC_HOOK_ASYNC     "async" /* Async-encoded frames */
   54 
   55 /* Maximum receive size bounds (for both sync and async sides) */
   56 #define NG_ASYNC_MIN_MRU        1
   57 #define NG_ASYNC_MAX_MRU        8192
   58 #define NG_ASYNC_DEFAULT_MRU    1600
   59 
   60 /* Frame statistics */
   61 struct ng_async_stat {
   62         u_int32_t       syncOctets;
   63         u_int32_t       syncFrames;
   64         u_int32_t       syncOverflows;
   65         u_int32_t       asyncOctets;
   66         u_int32_t       asyncFrames;
   67         u_int32_t       asyncRunts;
   68         u_int32_t       asyncOverflows;
   69         u_int32_t       asyncBadCheckSums;
   70 };
   71 
   72 /* Keep this in sync with the above structure definition */
   73 #define NG_ASYNC_STATS_TYPE_INFO        {                       \
   74           { "syncOctets",       &ng_parse_uint32_type   },      \
   75           { "syncFrames",       &ng_parse_uint32_type   },      \
   76           { "syncOverflows",    &ng_parse_uint32_type   },      \
   77           { "asyncOctets",      &ng_parse_uint32_type   },      \
   78           { "asyncFrames",      &ng_parse_uint32_type   },      \
   79           { "asyncRunts",       &ng_parse_uint32_type   },      \
   80           { "asyncOverflows",   &ng_parse_uint32_type   },      \
   81           { "asyncBadCheckSums",&ng_parse_uint32_type   },      \
   82           { NULL }                                              \
   83 }
   84 
   85 /* Configuration for this node */
   86 struct ng_async_cfg {
   87         u_char          enabled;        /* Turn encoding on/off */
   88         u_int16_t       amru;           /* Max receive async frame length */
   89         u_int16_t       smru;           /* Max receive sync frame length */
   90         u_int32_t       accm;           /* ACCM encoding */
   91 };
   92 
   93 /* Keep this in sync with the above structure definition */
   94 #define NG_ASYNC_CONFIG_TYPE_INFO       {                       \
   95           { "enabled",          &ng_parse_int8_type     },      \
   96           { "amru",             &ng_parse_uint16_type   },      \
   97           { "smru",             &ng_parse_uint16_type   },      \
   98           { "accm",             &ng_parse_hint32_type   },      \
   99           { NULL }                                              \
  100 }
  101 
  102 /* Commands */
  103 enum {
  104         NGM_ASYNC_CMD_GET_STATS = 1,    /* returns struct ng_async_stat */
  105         NGM_ASYNC_CMD_CLR_STATS,
  106         NGM_ASYNC_CMD_SET_CONFIG,       /* takes struct ng_async_cfg */
  107         NGM_ASYNC_CMD_GET_CONFIG,       /* returns struct ng_async_cfg */
  108 };
  109 
  110 #endif /* _NETGRAPH_NG_ASYNC_H_ */

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