Return to altq_priq.h CVS log

Up to [local] / src / sys / altq

eliminate the predefined special qids so that qids become simple
identifiers without embedded meanings.

this also allows us to make the semantics of the qid assignment in line
with the tag assignment in the next step.

ok, henning@

/*	$OpenBSD: altq_priq.h,v 1.6 2004/01/14 08:42:23 kjc Exp $	*/
/*	$KAME: altq_priq.h,v 1.1 2000/10/18 09:15:23 kjc Exp $	*/
/*
 * Copyright (C) 2000-2002
 *	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_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 */

/* 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

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 _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 */
};

#endif /* _KERNEL */

#ifdef __cplusplus
}
#endif

#endif /* _ALTQ_ALTQ_PRIQ_H_ */