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Annotation of sys/altq/altq_priq.h, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: altq_priq.h,v 1.6 2004/01/14 08:42:23 kjc Exp $       */
                      2: /*     $KAME: altq_priq.h,v 1.1 2000/10/18 09:15:23 kjc Exp $  */
                      3: /*
                      4:  * Copyright (C) 2000-2002
                      5:  *     Sony Computer Science Laboratories Inc.  All rights reserved.
                      6:  *
                      7:  * Redistribution and use in source and binary forms, with or without
                      8:  * modification, are permitted provided that the following conditions
                      9:  * are met:
                     10:  * 1. Redistributions of source code must retain the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer.
                     12:  * 2. Redistributions in binary form must reproduce the above copyright
                     13:  *    notice, this list of conditions and the following disclaimer in the
                     14:  *    documentation and/or other materials provided with the distribution.
                     15:  *
                     16:  * THIS SOFTWARE IS PROVIDED BY SONY CSL AND CONTRIBUTORS ``AS IS'' AND
                     17:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     18:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     19:  * ARE DISCLAIMED.  IN NO EVENT SHALL SONY CSL OR CONTRIBUTORS BE LIABLE
                     20:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     21:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     22:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     23:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     24:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     25:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     26:  * SUCH DAMAGE.
                     27:  */
                     28:
                     29: #ifndef _ALTQ_ALTQ_PRIQ_H_
                     30: #define        _ALTQ_ALTQ_PRIQ_H_
                     31:
                     32: #include <altq/altq.h>
                     33: #include <altq/altq_classq.h>
                     34: #include <altq/altq_red.h>
                     35: #include <altq/altq_rio.h>
                     36:
                     37: #ifdef __cplusplus
                     38: extern "C" {
                     39: #endif
                     40:
                     41: #define        PRIQ_MAXPRI     16      /* upper limit of the number of priorities */
                     42:
                     43: /* priq class flags */
                     44: #define        PRCF_RED                0x0001  /* use RED */
                     45: #define        PRCF_ECN                0x0002  /* use RED/ECN */
                     46: #define        PRCF_RIO                0x0004  /* use RIO */
                     47: #define        PRCF_CLEARDSCP          0x0010  /* clear diffserv codepoint */
                     48: #define        PRCF_DEFAULTCLASS       0x1000  /* default class */
                     49:
                     50: /* special class handles */
                     51: #define        PRIQ_NULLCLASS_HANDLE   0
                     52:
                     53: struct priq_classstats {
                     54:        u_int32_t               class_handle;
                     55:
                     56:        u_int                   qlength;
                     57:        u_int                   qlimit;
                     58:        u_int                   period;
                     59:        struct pktcntr          xmitcnt;  /* transmitted packet counter */
                     60:        struct pktcntr          dropcnt;  /* dropped packet counter */
                     61:
                     62:        /* red and rio related info */
                     63:        int                     qtype;
                     64:        struct redstats         red[3]; /* rio has 3 red stats */
                     65: };
                     66:
                     67: #ifdef _KERNEL
                     68:
                     69: struct priq_class {
                     70:        u_int32_t       cl_handle;      /* class handle */
                     71:        class_queue_t   *cl_q;          /* class queue structure */
                     72:        struct red      *cl_red;        /* RED state */
                     73:        int             cl_pri;         /* priority */
                     74:        int             cl_flags;       /* class flags */
                     75:        struct priq_if  *cl_pif;        /* back pointer to pif */
                     76:        struct altq_pktattr *cl_pktattr; /* saved header used by ECN */
                     77:
                     78:        /* statistics */
                     79:        u_int           cl_period;      /* backlog period */
                     80:        struct pktcntr  cl_xmitcnt;     /* transmitted packet counter */
                     81:        struct pktcntr  cl_dropcnt;     /* dropped packet counter */
                     82: };
                     83:
                     84: /*
                     85:  * priq interface state
                     86:  */
                     87: struct priq_if {
                     88:        struct priq_if          *pif_next;      /* interface state list */
                     89:        struct ifaltq           *pif_ifq;       /* backpointer to ifaltq */
                     90:        u_int                   pif_bandwidth;  /* link bandwidth in bps */
                     91:        int                     pif_maxpri;     /* max priority in use */
                     92:        struct priq_class       *pif_default;   /* default class */
                     93:        struct priq_class       *pif_classes[PRIQ_MAXPRI]; /* classes */
                     94: };
                     95:
                     96: #endif /* _KERNEL */
                     97:
                     98: #ifdef __cplusplus
                     99: }
                    100: #endif
                    101:
                    102: #endif /* _ALTQ_ALTQ_PRIQ_H_ */