/*-
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Copyright (c) 2005 Nuno Antunes <nuno.antunes@gmail.com>
 * Copyright (c) 2007 Alexander Motin <mav@freebsd.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef _NETGRAPH_NG_CAR_H_
#define _NETGRAPH_NG_CAR_H_

#define NG_CAR_NODE_TYPE        "car"
#define NGM_CAR_COOKIE          1173648034

/* Hook names */
#define NG_CAR_HOOK_UPPER       "upper"
#define NG_CAR_HOOK_LOWER       "lower"

/* Per hook statistics counters */
struct ng_car_hookstats {
        u_int64_t passed_pkts;  /* Counter for passed packets */
        u_int64_t dropped_pkts; /* Counter for dropped packets */
        u_int64_t green_pkts;   /* Counter for green packets */
        u_int64_t yellow_pkts;  /* Counter for yellow packets */
        u_int64_t red_pkts;     /* Counter for red packets */
        u_int64_t errors;       /* Counter for operation errors */
};
#define NG_CAR_HOOKSTATS        {                               \
          { "passed",           &ng_parse_uint64_type   },      \
          { "dropped",          &ng_parse_uint64_type   },      \
          { "green",            &ng_parse_uint64_type   },      \
          { "yellow",           &ng_parse_uint64_type   },      \
          { "red",              &ng_parse_uint64_type   },      \
          { "errors",           &ng_parse_uint64_type   },      \
          { NULL }                                              \
}

/* Bulk statistics */
struct ng_car_bulkstats {
        struct ng_car_hookstats upstream;
        struct ng_car_hookstats downstream;
};
#define NG_CAR_BULKSTATS(hstatstype) {                          \
          { "upstream",         (hstatstype)            },      \
          { "downstream",       (hstatstype)            },      \
          { NULL }                                              \
}

/* Per hook configuration */
struct ng_car_hookconf {
        u_int64_t cbs;          /* Committed burst size (bytes) */
        u_int64_t ebs;          /* Exceeded/Peak burst size (bytes) */
        u_int64_t cir;          /* Committed information rate (bits/s) */
        u_int64_t pir;          /* Peak information rate (bits/s) */
        u_int8_t green_action;  /* Action for green packets */
        u_int8_t yellow_action; /* Action for yellow packets */
        u_int8_t red_action;    /* Action for red packets */
        u_int8_t mode;          /* single/double rate, ... */
        u_int8_t opt;           /* color-aware or color-blind */
};
/* Keep this definition in sync with the above structure */
#define NG_CAR_HOOKCONF {                                       \
          { "cbs",              &ng_parse_uint64_type   },      \
          { "ebs",              &ng_parse_uint64_type   },      \
          { "cir",              &ng_parse_uint64_type   },      \
          { "pir",              &ng_parse_uint64_type   },      \
          { "greenAction",      &ng_parse_uint8_type    },      \
          { "yellowAction",     &ng_parse_uint8_type    },      \
          { "redAction",        &ng_parse_uint8_type    },      \
          { "mode",             &ng_parse_uint8_type    },      \
          { "opt",              &ng_parse_uint8_type    },      \
          { NULL }                                              \
}

#define NG_CAR_CBS_MIN          8192
#define NG_CAR_EBS_MIN          8192
#define NG_CAR_CIR_DFLT         10240

/* possible actions (...Action) */
enum {
    NG_CAR_ACTION_FORWARD = 1,
    NG_CAR_ACTION_DROP,
    NG_CAR_ACTION_MARK
};

/* operation modes (mode) */
enum {
    NG_CAR_SINGLE_RATE = 0,
    NG_CAR_DOUBLE_RATE,
    NG_CAR_RED,
    NG_CAR_SHAPE
};

/* mode options (bits in opt) */
#define NG_CAR_COLOR_AWARE      1
#define NG_CAR_COUNT_PACKETS    2

/* Bulk config */
struct ng_car_bulkconf {
        struct ng_car_hookconf upstream;
        struct ng_car_hookconf downstream;
};
#define NG_CAR_BULKCONF(hconftype) {                            \
          { "upstream",         (hconftype)             },      \
          { "downstream",       (hconftype)             },      \
          { NULL }                                              \
}

/* Commands */
enum {
        NGM_CAR_GET_STATS = 1,          /* Get statistics */
        NGM_CAR_CLR_STATS,              /* Clear statistics */
        NGM_CAR_GETCLR_STATS,           /* Get and clear statistics */
        NGM_CAR_GET_CONF,               /* Get bulk configuration */
        NGM_CAR_SET_CONF,               /* Set bulk configuration */
};

#endif /* _NETGRAPH_NG_CAR_H_ */