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_source.h

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    1 /*
    2  * ng_source.h
    3  */
    4 
    5 /*-
    6  * Copyright 2002 Sandvine 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 Sandvine Inc.; provided,
   12  * 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 Sandvine Inc.
   16  *    trademarks, including the mark "SANDVINE" on advertising, endorsements,
   17  *    or otherwise except as such appears in the above copyright notice or in
   18  *    the software.
   19  *
   20  * THIS SOFTWARE IS BEING PROVIDED BY SANDVINE "AS IS", AND TO THE MAXIMUM
   21  * EXTENT PERMITTED BY LAW, SANDVINE MAKES NO REPRESENTATIONS OR WARRANTIES,
   22  * EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE, INCLUDING WITHOUT LIMITATION,
   23  * ANY AND ALL IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
   24  * PURPOSE, OR NON-INFRINGEMENT.  SANDVINE DOES NOT WARRANT, GUARANTEE, OR
   25  * MAKE ANY REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE
   26  * USE OF THIS SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY
   27  * OR OTHERWISE.  IN NO EVENT SHALL SANDVINE 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 SANDVINE IS ADVISED OF THE POSSIBILITY OF SUCH
   35  * DAMAGE.
   36  *
   37  * Author: Dave Chapeskie
   38  *
   39  * $FreeBSD: releng/11.1/sys/netgraph/ng_source.h 209730 2010-07-06 16:55:39Z emaste $
   40  */
   41 
   42 #ifndef _NETGRAPH_NG_SOURCE_H_
   43 #define _NETGRAPH_NG_SOURCE_H_
   44 
   45 /* Node type name and magic cookie */
   46 #define NG_SOURCE_NODE_TYPE     "source"
   47 #define NGM_SOURCE_COOKIE       1110646684
   48 
   49 /* Hook names */
   50 #define NG_SOURCE_HOOK_INPUT    "input"
   51 #define NG_SOURCE_HOOK_OUTPUT   "output"
   52 
   53 /* Statistics structure returned by NGM_SOURCE_GET_STATS */
   54 struct ng_source_stats {
   55         uint64_t        outOctets;
   56         uint64_t        outFrames;
   57         uint32_t        queueOctets;
   58         uint32_t        queueFrames;
   59         uint32_t        maxPps;
   60         struct timeval  startTime;
   61         struct timeval  endTime;
   62         struct timeval  elapsedTime;
   63         struct timeval  lastTime;
   64 };
   65 
   66 extern const struct ng_parse_type ng_source_timeval_type;
   67 /* Keep this in sync with the above structure definition */
   68 #define NG_SOURCE_STATS_TYPE_INFO       {                       \
   69           { "outOctets",        &ng_parse_uint64_type   },      \
   70           { "outFrames",        &ng_parse_uint64_type   },      \
   71           { "queueOctets",      &ng_parse_uint32_type   },      \
   72           { "queueFrames",      &ng_parse_uint32_type   },      \
   73           { "maxPps",           &ng_parse_uint32_type   },      \
   74           { "startTime",        &ng_source_timeval_type },      \
   75           { "endTime",          &ng_source_timeval_type },      \
   76           { "elapsedTime",      &ng_source_timeval_type },      \
   77           { "lastTime",         &ng_source_timeval_type },      \
   78           { NULL }                                              \
   79 }
   80 
   81 /* Packet embedding info for NGM_SOURCE_GET/SET_TIMESTAMP */
   82 struct ng_source_embed_info {
   83         uint16_t        offset;         /* offset from ethernet header */
   84         uint8_t         flags;
   85         uint8_t         spare;
   86 };
   87 #define NGM_SOURCE_EMBED_ENABLE         0x01    /* enable embedding */
   88 #define NGM_SOURCE_INC_CNT_PER_LIST     0x02    /* increment once per list */
   89 
   90 /* Keep this in sync with the above structure definition. */
   91 #define NG_SOURCE_EMBED_TYPE_INFO {                             \
   92         { "offset",             &ng_parse_hint16_type   },      \
   93         { "flags",              &ng_parse_hint8_type    },      \
   94         { NULL }                                                \
   95 }
   96 
   97 /* Packet embedding info for NGM_SOURCE_GET/SET_COUNTER */
   98 #define NG_SOURCE_COUNTERS      4
   99 struct ng_source_embed_cnt_info {
  100         uint16_t        offset;         /* offset from ethernet header */
  101         uint8_t         flags;          /* as above */
  102         uint8_t         width;          /* in bytes (1, 2, 4) */
  103         uint32_t        next_val;
  104         uint32_t        min_val;
  105         uint32_t        max_val;
  106         int32_t         increment;
  107         uint8_t         index;          /* which counter (0..3) */
  108 };
  109 
  110 /* Keep this in sync with the above structure definition. */
  111 #define NG_SOURCE_EMBED_CNT_TYPE_INFO {                         \
  112         { "offset",             &ng_parse_hint16_type   },      \
  113         { "flags",              &ng_parse_hint8_type    },      \
  114         { "width",              &ng_parse_uint8_type    },      \
  115         { "next_val",           &ng_parse_uint32_type   },      \
  116         { "min_val",            &ng_parse_uint32_type   },      \
  117         { "max_val",            &ng_parse_uint32_type   },      \
  118         { "increment",          &ng_parse_int32_type    },      \
  119         { "index",              &ng_parse_uint8_type    },      \
  120         { NULL }                                                \
  121 }
  122 
  123 /* Netgraph commands */
  124 enum {
  125         NGM_SOURCE_GET_STATS = 1,       /* get stats */
  126         NGM_SOURCE_CLR_STATS,           /* clear stats */
  127         NGM_SOURCE_GETCLR_STATS,        /* atomically get and clear stats */
  128         NGM_SOURCE_START,               /* start sending queued data */
  129         NGM_SOURCE_STOP,                /* stop sending queued data */
  130         NGM_SOURCE_CLR_DATA,            /* clear the queued data */
  131         NGM_SOURCE_SETIFACE,            /* configure downstream iface */
  132         NGM_SOURCE_SETPPS,              /* rate-limiting packets per second */
  133         NGM_SOURCE_SET_TIMESTAMP,       /* embed xmit timestamp */
  134         NGM_SOURCE_GET_TIMESTAMP,
  135         NGM_SOURCE_SET_COUNTER,         /* embed counter */
  136         NGM_SOURCE_GET_COUNTER,
  137 };
  138 
  139 #endif /* _NETGRAPH_NG_SOURCE_H_ */

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