/*      $NetBSD: altq_fifoq.h,v 1.7 2006/10/12 19:59:08 peter Exp $     */
/*      $KAME: altq_fifoq.h,v 1.8 2002/11/29 04:36:23 kjc Exp $ */

/*
* Copyright (C) 1997-2002
*      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_FIFOQ_H_
#define _ALTQ_ALTQ_FIFOQ_H_

#ifdef _KERNEL
typedef struct fifoq_state {
       struct fifoq_state *q_next;     /* next fifoq_state in the list */
       struct ifaltq *q_ifq;           /* backpointer to ifaltq */

       struct mbuf *q_head;            /* head of queue */
       struct mbuf *q_tail;            /* tail of queue */
       int     q_len;                  /* queue length */
       int     q_limit;                /* max queue length */

       /* statistics */
       struct {
               struct pktcntr  xmit_cnt;
               struct pktcntr  drop_cnt;
               u_int           period;
       } q_stats;
} fifoq_state_t;
#endif

struct fifoq_interface {
       char    fifoq_ifname[IFNAMSIZ];
};

struct fifoq_getstats {
       struct fifoq_interface iface;
       int             q_len;
       int             q_limit;
       struct pktcntr  xmit_cnt;
       struct pktcntr  drop_cnt;
       u_int           period;
};

struct fifoq_conf {
       struct fifoq_interface iface;
       int fifoq_limit;
};

#define FIFOQ_LIMIT     50      /* default max queue length */

/*
* IOCTLs for FIFOQ
*/
#define FIFOQ_IF_ATTACH         _IOW('Q', 1, struct fifoq_interface)
#define FIFOQ_IF_DETACH         _IOW('Q', 2, struct fifoq_interface)
#define FIFOQ_ENABLE            _IOW('Q', 3, struct fifoq_interface)
#define FIFOQ_DISABLE           _IOW('Q', 4, struct fifoq_interface)
#define FIFOQ_CONFIG            _IOWR('Q', 6, struct fifoq_conf)
#define FIFOQ_GETSTATS          _IOWR('Q', 12, struct fifoq_getstats)

#endif /* _ALTQ_ALTQ_FIFOQ_H_ */