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Annotation of sys/altq/altq_priq.h, Revision 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_ */