124 lines
3.9 KiB
C
124 lines
3.9 KiB
C
/* $OpenBSD: hfsc.h,v 1.13 2017/05/02 12:27:37 mikeb Exp $ */
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/*
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* Copyright (c) 2012-2013 Henning Brauer <henning@openbsd.org>
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* Copyright (c) 1997-1999 Carnegie Mellon University. All Rights Reserved.
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*
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* Permission to use, copy, modify, and distribute this software and
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* its documentation is hereby granted (including for commercial or
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* for-profit use), provided that both the copyright notice and this
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* permission notice appear in all copies of the software, derivative
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* works, or modified versions, and any portions thereof.
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*
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* THIS SOFTWARE IS EXPERIMENTAL AND IS KNOWN TO HAVE BUGS, SOME OF
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* WHICH MAY HAVE SERIOUS CONSEQUENCES. CARNEGIE MELLON PROVIDES THIS
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* SOFTWARE IN ITS ``AS IS'' CONDITION, AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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* Carnegie Mellon encourages (but does not require) users of this
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* software to return any improvements or extensions that they make,
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* and to grant Carnegie Mellon the rights to redistribute these
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* changes without encumbrance.
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*/
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#ifndef _HFSC_H_
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#define _HFSC_H_
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/* hfsc class flags */
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#define HFSC_DEFAULTCLASS 0x1000 /* default class */
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struct hfsc_pktcntr {
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u_int64_t packets;
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u_int64_t bytes;
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};
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#define PKTCNTR_INC(cntr, len) \
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do { (cntr)->packets++; (cntr)->bytes += len; } while (0)
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struct hfsc_sc {
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u_int m1; /* slope of the first segment in bits/sec */
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u_int d; /* the x-projection of the first segment in msec */
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u_int m2; /* slope of the second segment in bits/sec */
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};
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/* special class handles */
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#define HFSC_ROOT_CLASS 0x10000
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#define HFSC_DEFAULT_CLASSES 64
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#define HFSC_MAX_CLASSES 65535
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/* service curve types */
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#define HFSC_REALTIMESC 1
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#define HFSC_LINKSHARINGSC 2
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#define HFSC_UPPERLIMITSC 4
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#define HFSC_DEFAULTSC (HFSC_REALTIMESC|HFSC_LINKSHARINGSC)
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struct hfsc_class_stats {
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struct hfsc_pktcntr xmit_cnt;
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struct hfsc_pktcntr drop_cnt;
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u_int qlength;
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u_int qlimit;
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u_int period;
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u_int class_id;
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u_int32_t class_handle;
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struct hfsc_sc rsc;
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struct hfsc_sc fsc;
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struct hfsc_sc usc; /* upper limit service curve */
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u_int64_t total; /* total work in bytes */
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u_int64_t cumul; /* cumulative work in bytes
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done by real-time criteria */
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u_int64_t d; /* deadline */
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u_int64_t e; /* eligible time */
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u_int64_t vt; /* virtual time */
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u_int64_t f; /* fit time for upper-limit */
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/* info helpful for debugging */
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u_int64_t initvt; /* init virtual time */
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u_int64_t vtoff; /* cl_vt_ipoff */
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u_int64_t cvtmax; /* cl_maxvt */
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u_int64_t myf; /* cl_myf */
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u_int64_t cfmin; /* cl_mincf */
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u_int64_t cvtmin; /* cl_mincvt */
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u_int64_t myfadj; /* cl_myfadj */
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u_int64_t vtadj; /* cl_vtadj */
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u_int64_t cur_time;
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u_int32_t machclk_freq;
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u_int vtperiod; /* vt period sequence no */
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u_int parentperiod; /* parent's vt period seqno */
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int nactive; /* number of active children */
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/* red and rio related info */
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int qtype;
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/* struct redstats red[3]; */
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};
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#ifdef _KERNEL
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struct ifnet;
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struct ifqueue;
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struct pf_queuespec;
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struct hfsc_if;
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extern const struct ifq_ops * const ifq_hfsc_ops;
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extern const struct pfq_ops * const pfq_hfsc_ops;
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#define HFSC_ENABLED(ifq) ((ifq)->ifq_ops == ifq_hfsc_ops)
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#define HFSC_DEFAULT_QLIMIT 50
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void hfsc_initialize(void);
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u_int64_t hfsc_microuptime(void);
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#endif /* _KERNEL */
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#endif /* _HFSC_H_ */
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