/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2002 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#ifndef _IPP_DSCPMK_DSCPMK_IMPL_H
#define _IPP_DSCPMK_DSCPMK_IMPL_H

#include <sys/types.h>
#include <sys/cmn_err.h>
#include <ipp/ipp.h>
#include <ipp/dscpmk/dscpmk.h>
#include <inet/ipp_common.h>

#ifdef  __cplusplus
extern "C" {
#endif

/* Header file for implementation of DS/ToS dscp marker ipp action module */

#define _DSCPMK_DEBUG

/* Mask out all but the Traffic class for IPv6 header */
#ifdef _BIG_ENDIAN
#define TCLASS_MASK             0xF00FFFFF
#else
#define TCLASS_MASK             0xFFFF0FF0
#endif

/* Array count for dscp_policed_array 0-63 */
#define DSCPMK_ARRAY_COUNT              64
/* During modification, entries that are unchanged are signified with -1 */
#define DSCPMK_UNCHANGED_DSCP           -1

#ifdef _DSCPMK_DEBUG
#include <sys/debug.h>
#define dscpmk0dbg(a)           printf a
#define dscpmk1dbg(a)           if (dscpmk_debug > 2) printf a
#define dscpmk2dbg(a)           if (dscpmk_debug > 3) printf a
#else
#define dscpmk0dbg(a)
#define dscpmk1dbg(a)
#define dscpmk2dbg(a)
#endif /* _DSCPMK_DEBUG */

/* dscpmk stats information available using kstats */
typedef struct dscpmk_stat_s {
        ipp_named_t     npackets;       /* no. of pkts seen by this instance */
        ipp_named_t     dscp_changed;   /* no. of pkts. with dscp changed */
        ipp_named_t     dscp_unchanged; /* no. of pkts. with dscp unchanged */
        ipp_named_t     ipackets;       /* no. of pkts. not processed */
        ipp_named_t     epackets;       /* no. of pkts. in error */
} dscpmk_stat_t;

typedef struct dscpmk_dscp_stats_s {
        ipp_named_t     dscp;           /* dscp value */
        ipp_named_t     npackets;       /* no. of packets for this dscp */
} dscpmk_dscp_stats_t;

/*
 * If the above structure is changed, the count will have to be updated
 * accordingly.
 */
#define DSCPMK_STATS_COUNT              5
#define DSCPMK_STATS_STRING             "dscpmk_stats"

#define DSCPMK_DSCP_STATS_COUNT         2

typedef struct dscp_stats_s {
        boolean_t       present;        /* Stats present for this DSCP */
        uint64_t        npackets;       /* no. of packets for this DSCP */
        ipp_stat_t      *stats;         /* stats for this DSCP */
} dscp_stats_t;

/* Per-instance structure */
typedef struct dscpmk_data_s {

        ipp_action_id_t next_action;    /* action id of next action */
        ipp_stat_t      *stats;         /* structure for storing stats */

        /* inbound DSCP -> outbound DSCP mapping table */
        uint8_t         dscp_map[DSCPMK_ARRAY_COUNT];

        /* Minimal stats */
        boolean_t       summary_stats;
        uint64_t        npackets;       /* no. of packets processed by action */
        uint64_t        changed;        /* packets with DSCP changed */
        uint64_t        unchanged;      /* packets with DSCP unchanged */
        uint64_t        ipackets;       /* packets not processed */
        uint64_t        epackets;       /* packets in error */

        /* per-DSCP stats */
        boolean_t       detailed_stats;
        /* Stats count per DSCP value 0-63 */
        dscp_stats_t    dscp_stats[DSCPMK_ARRAY_COUNT];
} dscpmk_data_t;

#define DSCPMK_DATA_SZ          sizeof (dscpmk_data_t)

#ifdef  _KERNEL
extern int dscpmk_process(mblk_t **, dscpmk_data_t *, ip_proc_t);
#endif /* _KERNEL */

#ifdef  __cplusplus
}
#endif

#endif /* _IPP_DSCPMK_DSCPMK_IMPL_H */