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_bridge.h

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    1 
    2 /*
    3  * ng_bridge.h
    4  *
    5  * Copyright (c) 2000 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: releng/5.2/sys/netgraph/ng_bridge.h 97685 2002-05-31 23:48:03Z archie $
   40  */
   41 
   42 #ifndef _NETGRAPH_NG_BRIDGE_H_
   43 #define _NETGRAPH_NG_BRIDGE_H_
   44 
   45 /* Node type name and magic cookie */
   46 #define NG_BRIDGE_NODE_TYPE             "bridge"
   47 #define NGM_BRIDGE_COOKIE               967239368
   48 
   49 /* Hook names */
   50 #define NG_BRIDGE_HOOK_LINK_PREFIX      "link"   /* append decimal integer */
   51 #define NG_BRIDGE_HOOK_LINK_FMT         "link%d" /* for use with printf(3) */
   52 
   53 /* Maximum number of supported links */
   54 #define NG_BRIDGE_MAX_LINKS             32
   55 
   56 /* Node configuration structure */
   57 struct ng_bridge_config {
   58         u_char          ipfw[NG_BRIDGE_MAX_LINKS];      /* enable ipfw */
   59         u_char          debugLevel;             /* debug level */
   60         u_int32_t       loopTimeout;            /* link loopback mute time */
   61         u_int32_t       maxStaleness;           /* max host age before nuking */
   62         u_int32_t       minStableAge;           /* min time for a stable host */
   63 };
   64 
   65 /* Keep this in sync with the above structure definition */
   66 #define NG_BRIDGE_CONFIG_TYPE_INFO(ainfo)       {               \
   67           { "ipfw",             (ainfo)                 },      \
   68           { "debugLevel",       &ng_parse_uint8_type    },      \
   69           { "loopTimeout",      &ng_parse_uint32_type   },      \
   70           { "maxStaleness",     &ng_parse_uint32_type   },      \
   71           { "minStableAge",     &ng_parse_uint32_type   },      \
   72           { NULL }                                              \
   73 }
   74 
   75 /* Statistics structure (one for each link) */
   76 struct ng_bridge_link_stats {
   77         u_int64_t       recvOctets;     /* total octets rec'd on link */
   78         u_int64_t       recvPackets;    /* total pkts rec'd on link */
   79         u_int64_t       recvMulticasts; /* multicast pkts rec'd on link */
   80         u_int64_t       recvBroadcasts; /* broadcast pkts rec'd on link */
   81         u_int64_t       recvUnknown;    /* pkts rec'd with unknown dest addr */
   82         u_int64_t       recvRunts;      /* pkts rec'd less than 14 bytes */
   83         u_int64_t       recvInvalid;    /* pkts rec'd with bogus source addr */
   84         u_int64_t       xmitOctets;     /* total octets xmit'd on link */
   85         u_int64_t       xmitPackets;    /* total pkts xmit'd on link */
   86         u_int64_t       xmitMulticasts; /* multicast pkts xmit'd on link */
   87         u_int64_t       xmitBroadcasts; /* broadcast pkts xmit'd on link */
   88         u_int64_t       loopDrops;      /* pkts dropped due to loopback */
   89         u_int64_t       loopDetects;    /* number of loop detections */
   90         u_int64_t       memoryFailures; /* times couldn't get mem or mbuf */
   91 };
   92 
   93 /* Keep this in sync with the above structure definition */
   94 #define NG_BRIDGE_STATS_TYPE_INFO       {                       \
   95           { "recvOctets",       &ng_parse_uint64_type   },      \
   96           { "recvPackets",      &ng_parse_uint64_type   },      \
   97           { "recvMulticast",    &ng_parse_uint64_type   },      \
   98           { "recvBroadcast",    &ng_parse_uint64_type   },      \
   99           { "recvUnknown",      &ng_parse_uint64_type   },      \
  100           { "recvRunts",        &ng_parse_uint64_type   },      \
  101           { "recvInvalid",      &ng_parse_uint64_type   },      \
  102           { "xmitOctets",       &ng_parse_uint64_type   },      \
  103           { "xmitPackets",      &ng_parse_uint64_type   },      \
  104           { "xmitMulticasts",   &ng_parse_uint64_type   },      \
  105           { "xmitBroadcasts",   &ng_parse_uint64_type   },      \
  106           { "loopDrops",        &ng_parse_uint64_type   },      \
  107           { "loopDetects",      &ng_parse_uint64_type   },      \
  108           { "memoryFailures",   &ng_parse_uint64_type   },      \
  109           { NULL }                                              \
  110 }
  111 
  112 /* Structure describing a single host */
  113 struct ng_bridge_host {
  114         u_char          addr[6];        /* ethernet address */
  115         u_int16_t       linkNum;        /* link where addr can be found */
  116         u_int16_t       age;            /* seconds ago entry was created */
  117         u_int16_t       staleness;      /* seconds ago host last heard from */
  118 };
  119 
  120 /* Keep this in sync with the above structure definition */
  121 #define NG_BRIDGE_HOST_TYPE_INFO(entype)        {               \
  122           { "addr",             (entype)                },      \
  123           { "linkNum",          &ng_parse_uint16_type   },      \
  124           { "age",              &ng_parse_uint16_type   },      \
  125           { "staleness",        &ng_parse_uint16_type   },      \
  126           { NULL }                                              \
  127 }
  128 
  129 /* Structure returned by NGM_BRIDGE_GET_TABLE */
  130 struct ng_bridge_host_ary {
  131         u_int32_t               numHosts;
  132         struct ng_bridge_host   hosts[0];
  133 };
  134 
  135 /* Keep this in sync with the above structure definition */
  136 #define NG_BRIDGE_HOST_ARY_TYPE_INFO(harytype)  {               \
  137           { "numHosts",         &ng_parse_uint32_type   },      \
  138           { "hosts",            (harytype)              },      \
  139           { NULL }                                              \
  140 }
  141 
  142 /* Netgraph control messages */
  143 enum {
  144         NGM_BRIDGE_SET_CONFIG = 1,      /* set node configuration */
  145         NGM_BRIDGE_GET_CONFIG,          /* get node configuration */
  146         NGM_BRIDGE_RESET,               /* reset (forget) all information */
  147         NGM_BRIDGE_GET_STATS,           /* get link stats */
  148         NGM_BRIDGE_CLR_STATS,           /* clear link stats */
  149         NGM_BRIDGE_GETCLR_STATS,        /* atomically get & clear link stats */
  150         NGM_BRIDGE_GET_TABLE,           /* get link table */
  151 };
  152 
  153 #endif /* _NETGRAPH_NG_BRIDGE_H_ */
  154 

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