FreeBSD/Linux Kernel Cross Reference
sys/net/altq/altq_cbq.h

     /*-
      * 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.
     *
     * $KAME: altq_cbq.h,v 1.12 2003/10/03 05:05:15 kjc Exp $
     * $FreeBSD$
     */
    
    #ifndef _ALTQ_ALTQ_CBQ_H_
    #define _ALTQ_ALTQ_CBQ_H_
    
    #include <net/altq/altq.h>
    #include <net/altq/altq_rmclass.h>
    #include <net/altq/altq_codel.h>
    #include <net/altq/altq_red.h>
    #include <net/altq/altq_rio.h>
    
    #ifdef __cplusplus
    extern "C" {
    #endif
    
    #define NULL_CLASS_HANDLE       0
    
    /* class flags must be same as class flags in altq_rmclass.h */
    #define CBQCLF_RED              0x0001  /* use RED */
    #define CBQCLF_ECN              0x0002  /* use RED/ECN */
    #define CBQCLF_RIO              0x0004  /* use RIO */
    #define CBQCLF_FLOWVALVE        0x0008  /* use flowvalve (aka penalty-box) */
    #define CBQCLF_CLEARDSCP        0x0010  /* clear diffserv codepoint */
    #define CBQCLF_BORROW           0x0020  /* borrow from parent */
    #define CBQCLF_CODEL            0x0040  /* use CoDel */
    
    #ifdef _KERNEL
    CTASSERT(CBQCLF_RED == RMCF_RED);
    CTASSERT(CBQCLF_ECN == RMCF_ECN);
    CTASSERT(CBQCLF_RIO == RMCF_RIO);
    CTASSERT(CBQCLF_FLOWVALVE == RMCF_FLOWVALVE);
    CTASSERT(CBQCLF_CLEARDSCP == RMCF_CLEARDSCP);
    CTASSERT(CBQCLF_CODEL == RMCF_CODEL);
    #endif
    
    /* class flags only for root class */
    #define CBQCLF_WRR              0x0100  /* weighted-round robin */
    #define CBQCLF_EFFICIENT        0x0200  /* 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 CBQ_MAXQSIZE            200
    #define CBQ_MAXPRI              RM_MAXPRIO
    
    typedef struct _cbq_class_stats_ {
            u_int32_t       handle;
            u_int           depth;
    
            struct pktcntr  xmit_cnt;       /* packets sent in this class */
            struct pktcntr  drop_cnt;       /* dropped packets */
            u_int           over;           /* # times went over limit */
            u_int           borrows;        /* # times tried to borrow */
            u_int           overactions;    /* # times invoked overlimit action */
            u_int           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;
   
           /* codel, red and rio related info */
           int             qtype;
           struct redstats red[3];
           struct codel_stats codel;
   } class_stats_t;
   
   /*
    * CBQ_STATS_VERSION is defined in altq.h to work around issues stemming
    * from mixing of public-API and internal bits in each scheduler-specific
    * header.
    */
   
   #ifdef _KERNEL
   /*
    * Define macros only good for kernel drivers and modules.
    */
   #define CBQ_WATCHDOG            (hz / 20)
   #define CBQ_TIMEOUT             10
   #define CBQ_LS_TIMEOUT          (20 * hz / 1000)
   
   #define CBQ_MAX_CLASSES 2048
   
   /*
    * Define State structures.
    */
   typedef struct cbqstate {
           int                      cbq_qlen;      /* # of packets in cbq */
           struct rm_class         *cbq_class_tbl[CBQ_MAX_CLASSES];
   
           struct rm_ifdat          ifnp;
           struct callout           cbq_callout;   /* for timeouts */
   #ifdef ALTQ3_CLFIER_COMPAT
           struct acc_classifier   cbq_classifier;
   #endif
   } cbq_state_t;
   
   #endif /* _KERNEL */
   
   #ifdef __cplusplus
   }
   #endif
   
   #endif /* !_ALTQ_ALTQ_CBQ_H_ */

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