0a70aaf8f5
CoDel is a parameterless queue discipline that handles variable bandwidth and RTT. It can be used as the single queue discipline on an interface or as a sub discipline of existing queue disciplines such as PRIQ, CBQ, HFSC, FAIRQ. Differential Revision: https://reviews.freebsd.org/D3272 Reviewd by: rpaulo, gnn (previous version) Obtained from: pfSense Sponsored by: Rubicon Communications (Netgate)
226 lines
6.0 KiB
C
226 lines
6.0 KiB
C
/*-
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* Copyright (c) Sun Microsystems, Inc. 1993-1998 All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the SMCC Technology
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* Development Group at Sun Microsystems, Inc.
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*
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* 4. The name of the Sun Microsystems, Inc nor may not be used to endorse or
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* promote products derived from this software without specific prior
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* written permission.
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*
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* SUN MICROSYSTEMS DOES NOT CLAIM MERCHANTABILITY OF THIS SOFTWARE OR THE
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* SUITABILITY OF THIS SOFTWARE FOR ANY PARTICULAR PURPOSE. The software is
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* provided "as is" without express or implied warranty of any kind.
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*
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* These notices must be retained in any copies of any part of this software.
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*
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* $KAME: altq_cbq.h,v 1.12 2003/10/03 05:05:15 kjc Exp $
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* $FreeBSD$
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*/
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#ifndef _ALTQ_ALTQ_CBQ_H_
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#define _ALTQ_ALTQ_CBQ_H_
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#include <net/altq/altq.h>
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#include <net/altq/altq_rmclass.h>
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#include <net/altq/altq_codel.h>
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#include <net/altq/altq_red.h>
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#include <net/altq/altq_rio.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define NULL_CLASS_HANDLE 0
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/* class flags should be same as class flags in rm_class.h */
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#define CBQCLF_RED 0x0001 /* use RED */
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#define CBQCLF_ECN 0x0002 /* use RED/ECN */
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#define CBQCLF_RIO 0x0004 /* use RIO */
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#define CBQCLF_FLOWVALVE 0x0008 /* use flowvalve (aka penalty-box) */
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#define CBQCLF_CLEARDSCP 0x0010 /* clear diffserv codepoint */
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#define CBQCLF_BORROW 0x0020 /* borrow from parent */
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#define CBQCLF_CODEL 0x0040 /* use CoDel */
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/* class flags only for root class */
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#define CBQCLF_WRR 0x0100 /* weighted-round robin */
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#define CBQCLF_EFFICIENT 0x0200 /* work-conserving */
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/* class flags for special classes */
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#define CBQCLF_ROOTCLASS 0x1000 /* root class */
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#define CBQCLF_DEFCLASS 0x2000 /* default class */
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#ifdef ALTQ3_COMPAT
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#define CBQCLF_CTLCLASS 0x4000 /* control class */
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#endif
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#define CBQCLF_CLASSMASK 0xf000 /* class mask */
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#define CBQ_MAXQSIZE 200
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#define CBQ_MAXPRI RM_MAXPRIO
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typedef struct _cbq_class_stats_ {
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u_int32_t handle;
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u_int depth;
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struct pktcntr xmit_cnt; /* packets sent in this class */
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struct pktcntr drop_cnt; /* dropped packets */
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u_int over; /* # times went over limit */
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u_int borrows; /* # times tried to borrow */
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u_int overactions; /* # times invoked overlimit action */
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u_int delays; /* # times invoked delay actions */
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/* other static class parameters useful for debugging */
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int priority;
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int maxidle;
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int minidle;
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int offtime;
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int qmax;
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int ns_per_byte;
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int wrr_allot;
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int qcnt; /* # packets in queue */
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int avgidle;
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/* codel, red and rio related info */
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int qtype;
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struct redstats red[3];
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struct codel_stats codel;
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} class_stats_t;
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#ifdef ALTQ3_COMPAT
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/*
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* Define structures associated with IOCTLS for cbq.
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*/
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/*
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* Define the CBQ interface structure. This must be included in all
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* IOCTL's such that the CBQ driver may find the appropriate CBQ module
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* associated with the network interface to be affected.
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*/
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struct cbq_interface {
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char cbq_ifacename[IFNAMSIZ];
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};
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typedef struct cbq_class_spec {
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u_int priority;
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u_int nano_sec_per_byte;
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u_int maxq;
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u_int maxidle;
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int minidle;
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u_int offtime;
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u_int32_t parent_class_handle;
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u_int32_t borrow_class_handle;
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u_int pktsize;
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int flags;
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} cbq_class_spec_t;
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struct cbq_add_class {
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struct cbq_interface cbq_iface;
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cbq_class_spec_t cbq_class;
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u_int32_t cbq_class_handle;
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};
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struct cbq_delete_class {
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struct cbq_interface cbq_iface;
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u_int32_t cbq_class_handle;
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};
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struct cbq_modify_class {
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struct cbq_interface cbq_iface;
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cbq_class_spec_t cbq_class;
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u_int32_t cbq_class_handle;
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};
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struct cbq_add_filter {
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struct cbq_interface cbq_iface;
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u_int32_t cbq_class_handle;
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struct flow_filter cbq_filter;
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u_long cbq_filter_handle;
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};
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struct cbq_delete_filter {
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struct cbq_interface cbq_iface;
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u_long cbq_filter_handle;
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};
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/* number of classes are returned in nclasses field */
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struct cbq_getstats {
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struct cbq_interface iface;
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int nclasses;
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class_stats_t *stats;
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};
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/*
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* Define IOCTLs for CBQ.
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*/
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#define CBQ_IF_ATTACH _IOW('Q', 1, struct cbq_interface)
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#define CBQ_IF_DETACH _IOW('Q', 2, struct cbq_interface)
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#define CBQ_ENABLE _IOW('Q', 3, struct cbq_interface)
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#define CBQ_DISABLE _IOW('Q', 4, struct cbq_interface)
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#define CBQ_CLEAR_HIERARCHY _IOW('Q', 5, struct cbq_interface)
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#define CBQ_ADD_CLASS _IOWR('Q', 7, struct cbq_add_class)
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#define CBQ_DEL_CLASS _IOW('Q', 8, struct cbq_delete_class)
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#define CBQ_MODIFY_CLASS _IOWR('Q', 9, struct cbq_modify_class)
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#define CBQ_ADD_FILTER _IOWR('Q', 10, struct cbq_add_filter)
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#define CBQ_DEL_FILTER _IOW('Q', 11, struct cbq_delete_filter)
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#define CBQ_GETSTATS _IOWR('Q', 12, struct cbq_getstats)
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#endif /* ALTQ3_COMPAT */
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#ifdef _KERNEL
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/*
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* Define macros only good for kernel drivers and modules.
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*/
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#define CBQ_WATCHDOG (hz / 20)
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#define CBQ_TIMEOUT 10
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#define CBQ_LS_TIMEOUT (20 * hz / 1000)
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#define CBQ_MAX_CLASSES 256
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#ifdef ALTQ3_COMPAT
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#define CBQ_MAX_FILTERS 256
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#define DISABLE 0x00
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#define ENABLE 0x01
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#endif /* ALTQ3_COMPAT */
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/*
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* Define State structures.
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*/
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typedef struct cbqstate {
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#ifdef ALTQ3_COMPAT
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struct cbqstate *cbq_next;
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#endif
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int cbq_qlen; /* # of packets in cbq */
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struct rm_class *cbq_class_tbl[CBQ_MAX_CLASSES];
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struct rm_ifdat ifnp;
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struct callout cbq_callout; /* for timeouts */
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#ifdef ALTQ3_CLFIER_COMPAT
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struct acc_classifier cbq_classifier;
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#endif
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} cbq_state_t;
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#endif /* _KERNEL */
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#ifdef __cplusplus
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}
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#endif
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#endif /* !_ALTQ_ALTQ_CBQ_H_ */
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