/*
 * 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_DLCOSMK_DLCOSMK_IMPL_H
#define _IPP_DLCOSMK_DLCOSMK_IMPL_H

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

#ifdef  __cplusplus
extern "C" {
#endif

/* Header file for implementation of DL CoS marker ipp action module */

#define _DLCOSMK_DEBUG

/* The 3-MSB in the ToS/Dsfield are used to map to the 802.1D user priority */
#define TOS_CLASS_MASK          5
/* 802.1D user priority is 3 bits - 0-7 */
#define UPRI_MAP_COUNT          8
/* This will be used it the ToS/Dsfield needs to be mapped */
#define MAP_TOS_TO_UPRI         8

#ifdef _DLCOSMK_DEBUG
#include <sys/debug.h>
#define dlcosmk0dbg(a)          printf a
#define dlcosmk1dbg(a)          if (dlcosmk_debug > 2) printf a
#define dlcosmk2dbg(a)          if (dlcosmk_debug > 3) printf a
#else
#define dlcosmk0dbg(a)
#define dlcosmk1dbg(a)
#define dlcosmk2dbg(a)
#endif /* _DLCOSMK_DEBUG */

/* dlcosmk stats info. available using kstats */
typedef struct dlcosmk_stat_s {
        ipp_named_t     npackets;       /* no. of pkts seen by this instance */
        ipp_named_t     ipackets;       /* no. of pkts not processed */
        ipp_named_t     epackets;       /* no. of pkts in error */
        ipp_named_t     usr_pri;        /* configured 802.1D priority */
        ipp_named_t     b_band;         /* Mapped b_band for the priority */
        ipp_named_t     dl_max;         /* Mapped dl_max for the priority */
} dlcosmk_stat_t;

/*
 * If the above structure is changed, the count will have to be updated
 * accordingly.
 */
#define DLCOSMK_STATS_COUNT             6
#define DLCOSMK_STATS_STRING            "dlcosmk statistics"

/*
 * Table containing 802.1D user_priority -> b_band/dl_max mappings.
 * The mappings have been taken from the VLAN driver.
 */
typedef struct usrpri_tbl_s {
        uchar_t b_band;
        t_scalar_t dl_max;
} usrpri_tbl_t;

extern usrpri_tbl_t usrpri_tbl[UPRI_MAP_COUNT];

#define UPRI_TBL_SZ             sizeof (usrpri_tbl_t)

/* Per-instance data structure */
typedef struct dlcosmk_data_s {
        ipp_action_id_t next_action;    /* action id of next action */
        ipp_stat_t      *stats;         /* stats for this instance */
        uint8_t         usr_pri;        /* 802.1d user priority */
        uchar_t         b_band;         /* corresponding bband */
        t_scalar_t      dl_max;         /* corresponding dl_max */
        boolean_t       gather_stats;   /* stats collected or not */
        uint64_t        npackets;       /* no. of pkts. for this instance */
        uint64_t        epackets;       /* no. of pkts. in error */
        uint64_t        ipackets;       /* no. of pkts. not processed */
} dlcosmk_data_t;

#define DLCOSMK_DATA_SZ         sizeof (dlcosmk_data_t)

/*
 * ToS -> user_priority mapping. This mapping is local to this implementation
 * i.e., the ToS -> 802.1D mapping is not a standard.
 */
extern uint8_t tos_to_usrpri[UPRI_MAP_COUNT];

#ifdef _KERNEL
extern int dlcosmk_debug;
extern int dlcosmk_process(mblk_t **, dlcosmk_data_t *, uint32_t, ip_proc_t);
#endif /* _KERNEL */

#ifdef  __cplusplus
}
#endif

#endif /* _IPP_DLCOSMK_DLCOSMK_IMPL_H */