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

     /*-
      * Copyright (C) 2000-2003
      *      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.
     *
     * $KAME: altq_priq.h,v 1.7 2003/10/03 05:05:15 kjc Exp $
     * $FreeBSD$
     */
    
    #ifndef _ALTQ_ALTQ_PRIQ_H_
    #define _ALTQ_ALTQ_PRIQ_H_
    
    #include <net/altq/altq.h>
    #include <net/altq/altq_classq.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 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_CODEL              0x0008  /* use CoDel */
    #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 */
    
            /* codel, red and rio related info */
            int                     qtype;
            struct redstats         red[3]; /* rio has 3 red stats */
            struct codel_stats      codel;
    };
    
    /*
     * PRIQ_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
    
    struct priq_class {
            u_int32_t       cl_handle;      /* class handle */
            class_queue_t   *cl_q;          /* class queue structure */
            union {
                    struct red      *cl_red;        /* RED state */
                    struct codel    *cl_codel;      /* CoDel state */
            } cl_aqm;
    #define cl_red          cl_aqm.cl_red
    #define cl_codel        cl_aqm.cl_codel
            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 */
   #ifdef ALTQ3_CLFIER_COMPAT
           struct acc_classifier   pif_classifier; /* classifier */
   #endif
   };
   
   #endif /* _KERNEL */
   
   #ifdef __cplusplus
   }
   #endif
   
   #endif /* _ALTQ_ALTQ_PRIQ_H_ */

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