/*      $NetBSD: altq_priq.h,v 1.7 2006/10/12 19:59:08 peter Exp $      */
/*      $KAME: altq_priq.h,v 1.7 2003/10/03 05:05:15 kjc Exp $  */
/*
* Copyright (C) 2000-2003
*      Sony Computer Science Laboratories Inc.  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 SONY CSL 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 SONY CSL 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 _ALTQ_ALTQ_PRIQ_H_
#define _ALTQ_ALTQ_PRIQ_H_

#include <altq/altq.h>
#include <altq/altq_classq.h>
#include <altq/altq_red.h>
#include <altq/altq_rio.h>

#ifdef __cplusplus
extern "C" {
#endif

#define PRIQ_MAXPRI     16      /* upper limit of the number of priorities */

#ifdef ALTQ3_COMPAT
struct priq_interface {
       char    ifname[IFNAMSIZ];       /* interface name (e.g., fxp0) */
       u_long  arg;                    /* request-specific argument */
};

struct priq_add_class {
       struct priq_interface   iface;
       int                     pri;    /* priority (0 is the lowest) */
       int                     qlimit; /* queue size limit */
       int                     flags;  /* misc flags (see below) */

       u_int32_t               class_handle;  /* return value */
};
#endif /* ALTQ3_COMPAT */

/* priq class flags */
#define PRCF_RED                0x0001  /* use RED */
#define PRCF_ECN                0x0002  /* use RED/ECN */
#define PRCF_RIO                0x0004  /* use RIO */
#define PRCF_CLEARDSCP          0x0010  /* clear diffserv codepoint */
#define PRCF_DEFAULTCLASS       0x1000  /* default class */

/* special class handles */
#define PRIQ_NULLCLASS_HANDLE   0

#ifdef ALTQ3_COMPAT
struct priq_delete_class {
       struct priq_interface   iface;
       u_int32_t               class_handle;
};

struct priq_modify_class {
       struct priq_interface   iface;
       u_int32_t               class_handle;
       int                     pri;
       int                     qlimit;
       int                     flags;
};

struct priq_add_filter {
       struct priq_interface   iface;
       u_int32_t               class_handle;
       struct flow_filter      filter;

       u_long                  filter_handle;  /* return value */
};

struct priq_delete_filter {
       struct priq_interface   iface;
       u_long                  filter_handle;
};
#endif /* ALTQ3_COMPAT */

struct priq_classstats {
       u_int32_t               class_handle;

       u_int                   qlength;
       u_int                   qlimit;
       u_int                   period;
       struct pktcntr          xmitcnt;  /* transmitted packet counter */
       struct pktcntr          dropcnt;  /* dropped packet counter */

       /* red and rio related info */
       int                     qtype;
       struct redstats         red[3]; /* rio has 3 red stats */
};

#ifdef ALTQ3_COMPAT
struct priq_class_stats {
       struct priq_interface   iface;
       int                     maxpri;   /* in/out */

       struct priq_classstats  *stats;   /* pointer to stats array */
};

#define PRIQ_IF_ATTACH          _IOW('Q', 1, struct priq_interface)
#define PRIQ_IF_DETACH          _IOW('Q', 2, struct priq_interface)
#define PRIQ_ENABLE             _IOW('Q', 3, struct priq_interface)
#define PRIQ_DISABLE            _IOW('Q', 4, struct priq_interface)
#define PRIQ_CLEAR              _IOW('Q', 5, struct priq_interface)
#define PRIQ_ADD_CLASS          _IOWR('Q', 7, struct priq_add_class)
#define PRIQ_DEL_CLASS          _IOW('Q', 8, struct priq_delete_class)
#define PRIQ_MOD_CLASS          _IOW('Q', 9, struct priq_modify_class)
#define PRIQ_ADD_FILTER         _IOWR('Q', 10, struct priq_add_filter)
#define PRIQ_DEL_FILTER         _IOW('Q', 11, struct priq_delete_filter)
#define PRIQ_GETSTATS           _IOWR('Q', 12, struct priq_class_stats)

#endif /* ALTQ3_COMPAT */

#ifdef _KERNEL

struct priq_class {
       u_int32_t       cl_handle;      /* class handle */
       class_queue_t   *cl_q;          /* class queue structure */
       struct red      *cl_red;        /* RED state */
       int             cl_pri;         /* priority */
       int             cl_flags;       /* class flags */
       struct priq_if  *cl_pif;        /* back pointer to pif */
       struct altq_pktattr *cl_pktattr; /* saved header used by ECN */

       /* statistics */
       u_int           cl_period;      /* backlog period */
       struct pktcntr  cl_xmitcnt;     /* transmitted packet counter */
       struct pktcntr  cl_dropcnt;     /* dropped packet counter */
};

/*
* priq interface state
*/
struct priq_if {
       struct priq_if          *pif_next;      /* interface state list */
       struct ifaltq           *pif_ifq;       /* backpointer to ifaltq */
       u_int                   pif_bandwidth;  /* link bandwidth in bps */
       int                     pif_maxpri;     /* max priority in use */
       struct priq_class       *pif_default;   /* default class */
       struct priq_class       *pif_classes[PRIQ_MAXPRI]; /* classes */
#ifdef ALTQ3_CLFIER_COMPAT
       struct acc_classifier   pif_classifier; /* classifier */
#endif
};

#endif /* _KERNEL */

#ifdef __cplusplus
}
#endif

#endif /* _ALTQ_ALTQ_PRIQ_H_ */

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