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/netgraph7/ng_car.h

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    1 /*-
    2  * Copyright (c) 2005 Nuno Antunes <nuno.antunes@gmail.com>
    3  * Copyright (c) 2007 Alexander Motin <mav@freebsd.org>
    4  * All rights reserved.
    5  *
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions
    8  * are met:
    9  * 1. Redistributions of source code must retain the above copyright
   10  *    notice, this list of conditions and the following disclaimer.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  *
   15  * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   18  * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
   19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   25  * SUCH DAMAGE.
   26  *
   27  * $FreeBSD: src/sys/netgraph/ng_car.h,v 1.2 2007/12/19 22:50:14 mav Exp $
   28  * $DragonFly: src/sys/netgraph7/ng_car.h,v 1.2 2008/06/26 23:05:35 dillon Exp $
   29  */
   30 
   31 #ifndef _NETGRAPH_NG_CAR_H_
   32 #define _NETGRAPH_NG_CAR_H_
   33 
   34 #define NG_CAR_NODE_TYPE        "car"
   35 #define NGM_CAR_COOKIE          1173648034
   36 
   37 /* Hook names */
   38 #define NG_CAR_HOOK_UPPER       "upper"
   39 #define NG_CAR_HOOK_LOWER       "lower"
   40 
   41 /* Per hook statistics counters */
   42 struct ng_car_hookstats {
   43         u_int64_t passed_pkts;  /* Counter for passed packets */
   44         u_int64_t droped_pkts;  /* Counter for droped packets */
   45         u_int64_t green_pkts;   /* Counter for green packets */
   46         u_int64_t yellow_pkts;  /* Counter for yellow packets */
   47         u_int64_t red_pkts;     /* Counter for red packets */
   48         u_int64_t errors;       /* Counter for operation errors */
   49 };
   50 #define NG_CAR_HOOKSTATS        {                               \
   51           { "passed",           &ng_parse_uint64_type   },      \
   52           { "droped",           &ng_parse_uint64_type   },      \
   53           { "green",            &ng_parse_uint64_type   },      \
   54           { "yellow",           &ng_parse_uint64_type   },      \
   55           { "red",              &ng_parse_uint64_type   },      \
   56           { "errors",           &ng_parse_uint64_type   },      \
   57           { NULL }                                              \
   58 }
   59 
   60 /* Bulk statistics */
   61 struct ng_car_bulkstats {
   62         struct ng_car_hookstats upstream;
   63         struct ng_car_hookstats downstream;
   64 };
   65 #define NG_CAR_BULKSTATS(hstatstype) {                          \
   66           { "upstream",         (hstatstype)            },      \
   67           { "downstream",       (hstatstype)            },      \
   68           { NULL }                                              \
   69 }
   70 
   71 /* Per hook configuration */
   72 struct ng_car_hookconf {
   73         u_int64_t cbs;          /* Commited burst size (bytes) */
   74         u_int64_t ebs;          /* Exceeded/Peak burst size (bytes) */
   75         u_int64_t cir;          /* Commited information rate (bits/s) */
   76         u_int64_t pir;          /* Peak information rate (bits/s) */
   77         u_int8_t green_action;  /* Action for green packets */
   78         u_int8_t yellow_action; /* Action for yellow packets */
   79         u_int8_t red_action;    /* Action for red packets */
   80         u_int8_t mode;          /* single/double rate, ... */
   81         u_int8_t opt;           /* color-aware or color-blind */
   82 };
   83 /* Keep this definition in sync with the above structure */
   84 #define NG_CAR_HOOKCONF {                                       \
   85           { "cbs",              &ng_parse_uint64_type   },      \
   86           { "ebs",              &ng_parse_uint64_type   },      \
   87           { "cir",              &ng_parse_uint64_type   },      \
   88           { "pir",              &ng_parse_uint64_type   },      \
   89           { "greenAction",      &ng_parse_uint8_type    },      \
   90           { "yellowAction",     &ng_parse_uint8_type    },      \
   91           { "redAction",        &ng_parse_uint8_type    },      \
   92           { "mode",             &ng_parse_uint8_type    },      \
   93           { "opt",              &ng_parse_uint8_type    },      \
   94           { NULL }                                              \
   95 }
   96 
   97 #define NG_CAR_CBS_MIN          8192
   98 #define NG_CAR_EBS_MIN          8192
   99 #define NG_CAR_CIR_DFLT         10240
  100 
  101 /* possible actions (...Action) */
  102 enum {
  103     NG_CAR_ACTION_FORWARD = 1,
  104     NG_CAR_ACTION_DROP,
  105     NG_CAR_ACTION_MARK,
  106     NG_CAR_ACTION_SET_TOS
  107 };
  108 
  109 /* operation modes (mode) */
  110 enum {
  111     NG_CAR_SINGLE_RATE = 0,
  112     NG_CAR_DOUBLE_RATE,
  113     NG_CAR_RED,
  114     NG_CAR_SHAPE
  115 };
  116 
  117 /* mode options (opt) */
  118 #define NG_CAR_COLOR_AWARE      1
  119 #define NG_CAR_COUNT_PACKETS    2
  120 
  121 /* Bulk config */
  122 struct ng_car_bulkconf {
  123         struct ng_car_hookconf upstream;
  124         struct ng_car_hookconf downstream;
  125 };
  126 #define NG_CAR_BULKCONF(hconftype) {                            \
  127           { "upstream",         (hconftype)             },      \
  128           { "downstream",       (hconftype)             },      \
  129           { NULL }                                              \
  130 }
  131 
  132 /* Commands */
  133 enum {
  134         NGM_CAR_GET_STATS = 1,          /* Get statistics */
  135         NGM_CAR_CLR_STATS,              /* Clear statistics */
  136         NGM_CAR_GETCLR_STATS,           /* Get and clear statistics */
  137         NGM_CAR_GET_CONF,               /* Get bulk configuration */
  138         NGM_CAR_SET_CONF,               /* Set bulk configuration */
  139 };
  140 
  141 #endif /* _NETGRAPH_NG_CAR_H_ */

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