sys/net/altq/altq_priq.h

   1 /*      $KAME: altq_priq.h,v 1.7 2003/10/03 05:05:15 kjc Exp $  */
   2 /*      $DragonFly: src/sys/net/altq/altq_priq.h,v 1.1 2005/02/11 22:25:57 joerg Exp $ */
   3
   4 /*
   5  * Copyright (C) 2000-2003
   6  *      Sony Computer Science Laboratories Inc.  All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY SONY CSL AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL SONY CSL OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29
  30 #ifndef _ALTQ_ALTQ_PRIQ_H_
  31 #define _ALTQ_ALTQ_PRIQ_H_
  32
  33 #include <net/altq/altq.h>
  34 #include <net/altq/altq_classq.h>
  35 #include <net/altq/altq_red.h>
  36 #include <net/altq/altq_rio.h>
  37
  38 #define PRIQ_MAXPRI     16      /* upper limit of the number of priorities */
  39
  40 /* priq class flags */
  41 #define PRCF_RED                0x0001  /* use RED */
  42 #define PRCF_ECN                0x0002  /* use RED/ECN */
  43 #define PRCF_RIO                0x0004  /* use RIO */
  44 #define PRCF_CLEARDSCP          0x0010  /* clear diffserv codepoint */
  45 #define PRCF_DEFAULTCLASS       0x1000  /* default class */
  46
  47 /* special class handles */
  48 #define PRIQ_NULLCLASS_HANDLE   0
  49
  50 struct priq_classstats {
  51         uint32_t                class_handle;
  52
  53         u_int                   qlength;
  54         u_int                   qlimit;
  55         u_int                   period;
  56         struct pktcntr          xmitcnt;  /* transmitted packet counter */
  57         struct pktcntr          dropcnt;  /* dropped packet counter */
  58
  59         /* red and rio related info */
  60         int                     qtype;
  61         struct redstats         red[3]; /* rio has 3 red stats */
  62 };
  63
  64 #ifdef _KERNEL
  65
  66 struct priq_class {
  67         uint32_t        cl_handle;      /* class handle */
  68         class_queue_t   *cl_q;          /* class queue structure */
  69         struct red      *cl_red;        /* RED state */
  70         int             cl_pri;         /* priority */
  71         int             cl_flags;       /* class flags */
  72         struct priq_if  *cl_pif;        /* back pointer to pif */
  73         struct altq_pktattr *cl_pktattr; /* saved header used by ECN */
  74
  75         /* statistics */
  76         u_int           cl_period;      /* backlog period */
  77         struct pktcntr  cl_xmitcnt;     /* transmitted packet counter */
  78         struct pktcntr  cl_dropcnt;     /* dropped packet counter */
  79 };
  80
  81 /*
  82  * priq interface state
  83  */
  84 struct priq_if {
  85         struct priq_if          *pif_next;      /* interface state list */
  86         struct ifaltq           *pif_ifq;       /* backpointer to ifaltq */
  87         u_int                   pif_bandwidth;  /* link bandwidth in bps */
  88         int                     pif_maxpri;     /* max priority in use */
  89         struct priq_class       *pif_default;   /* default class */
  90         struct priq_class       *pif_classes[PRIQ_MAXPRI]; /* classes */
  91 };
  92
  93 #endif /* _KERNEL */
  94
  95 #endif /* _ALTQ_ALTQ_PRIQ_H_ */