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/*	$NetBSD: altq_cbq.h,v 1.8 2006/10/12 19:59:08 peter Exp $	*/
/*	$KAME: altq_cbq.h,v 1.12 2003/10/03 05:05:15 kjc Exp $	*/

/*
 * Copyright (c) Sun Microsystems, Inc. 1993-1998 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.
 *
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the SMCC Technology
 *      Development Group at Sun Microsystems, Inc.
 *
 * 4. The name of the Sun Microsystems, Inc nor may not be used to endorse or
 *      promote products derived from this software without specific prior
 *      written permission.
 *
 * SUN MICROSYSTEMS DOES NOT CLAIM MERCHANTABILITY OF THIS SOFTWARE OR THE
 * SUITABILITY OF THIS SOFTWARE FOR ANY PARTICULAR PURPOSE.  The software is
 * provided "as is" without express or implied warranty of any kind.
 *
 * These notices must be retained in any copies of any part of this software.
 */

#ifndef _NET_PKTSCHED_PKTSCHED_CBQ_H_
#define	_NET_PKTSCHED_PKTSCHED_CBQ_H_

#ifdef PRIVATE
#include <net/pktsched/pktsched_rmclass.h>
#include <net/classq/classq.h>
#include <net/classq/classq_red.h>
#include <net/classq/classq_rio.h>
#include <net/classq/classq_blue.h>
#include <net/classq/classq_sfb.h>

#ifdef __cplusplus
extern "C" {
#endif

/* class flags should be same as class flags in rm_class.h */
#define	CBQCLF_RED		RMCF_RED	/* use RED */
#define	CBQCLF_ECN		RMCF_ECN	/* use ECN with RED/BLUE/SFB */
#define	CBQCLF_RIO		RMCF_RIO	/* use RIO */
#define	CBQCLF_FLOWVALVE	RMCF_FLOWVALVE	/* use flowvalve/penalty-box */
#define	CBQCLF_CLEARDSCP	RMCF_CLEARDSCP	/* clear diffserv codepoint */
#define	CBQCLF_BORROW		0x0020		/* borrow from parent */

/* class flags only for root class */
#define	CBQCLF_WRR		RMCF_WRR	/* weighted-round robin */
#define	CBQCLF_EFFICIENT	RMCF_EFFICIENT	/* work-conserving */

/* class flags for special classes */
#define	CBQCLF_ROOTCLASS	0x1000		/* root class */
#define	CBQCLF_DEFCLASS		0x2000		/* default class */
#define	CBQCLF_CLASSMASK	0xf000		/* class mask */

#define	CBQCLF_BLUE		RMCF_BLUE	/* use BLUE */
#define	CBQCLF_SFB		RMCF_SFB	/* use SFB */
#define	CBQCLF_FLOWCTL		RMCF_FLOWCTL	/* enable flow ctl advisories */

#ifdef BSD_KERNEL_PRIVATE
#define	CBQCLF_LAZY		0x10000000 /* on-demand resource allocation */
#endif /* BSD_KERNEL_PRIVATE */

#define	CBQCLF_USERFLAGS						   \
	(CBQCLF_RED | CBQCLF_ECN | CBQCLF_RIO | CBQCLF_FLOWVALVE |	   \
	CBQCLF_CLEARDSCP | CBQCLF_BORROW | CBQCLF_WRR | CBQCLF_EFFICIENT | \
	CBQCLF_ROOTCLASS | CBQCLF_DEFCLASS | CBQCLF_BLUE | CBQCLF_SFB |	   \
	CBQCLF_FLOWCTL)

#ifdef BSD_KERNEL_PRIVATE
#define	CBQCLF_BITS \
	"\020\1RED\2ECN\3RIO\4FLOWVALVE\5CLEARDSCP\6BORROW" \
	"\11WRR\12EFFICIENT\15ROOT\16DEFAULT\21BLUE\22SFB\23FLOWCTL\35LAZY"
#else
#define	CBQCLF_BITS \
	"\020\1RED\2ECN\3RIO\4FLOWVALVE\5CLEARDSCP\6BORROW" \
	"\11WRR\12EFFICIENT\15ROOT\16DEFAULT\21BLUE\22SFB\23FLOWCTL"
#endif /* !BSD_KERNEL_PRIVATE */

#define	CBQ_MAXQSIZE		200
#define	CBQ_MAXPRI		RM_MAXPRIO

typedef struct cbq_classstats {
	u_int32_t	handle;
	u_int32_t	depth;

	struct pktcntr	xmit_cnt;	/* packets sent in this class */
	struct pktcntr	drop_cnt;	/* dropped packets */
	u_int32_t	over;		/* # times went over limit */
	u_int32_t	borrows;	/* # times tried to borrow */
	u_int32_t	overactions;	/* # times invoked overlimit action */
	u_int32_t	delays;		/* # times invoked delay actions */

	/* other static class parameters useful for debugging */
	int		priority;
	int		maxidle;
	int		minidle;
	int		offtime;
	int		qmax;
	int		ns_per_byte;
	int		wrr_allot;

	int		qcnt;		/* # packets in queue */
	int		avgidle;

	/* RED, RIO, BLUE, SFB related info */
	classq_type_t	qtype;
	union {
		/* RIO has 3 red stats */
		struct red_stats	red[RIO_NDROPPREC];
		struct blue_stats	blue;
		struct sfb_stats	sfb;
	};
	classq_state_t	qstate;
} class_stats_t;

#ifdef __cplusplus
}
#endif
#endif /* PRIVATE */
#endif /* !_NET_PKTSCHED_PKTSCHED_CBQ_H_ */
