sys/altq/altq_fifoq.h

   1 /*      $NetBSD: altq_fifoq.h,v 1.6.12.1 2006/03/18 12:08:18 peter Exp $        */
   2 /*      $KAME: altq_fifoq.h,v 1.8 2002/11/29 04:36:23 kjc Exp $ */
   3
   4 /*
   5  * Copyright (C) 1997-2002
   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_FIFOQ_H_
  31 #define _ALTQ_ALTQ_FIFOQ_H_
  32
  33 #ifdef _KERNEL
  34 typedef struct fifoq_state {
  35         struct fifoq_state *q_next;     /* next fifoq_state in the list */
  36         struct ifaltq *q_ifq;           /* backpointer to ifaltq */
  37
  38         struct mbuf *q_head;            /* head of queue */
  39         struct mbuf *q_tail;            /* tail of queue */
  40         int     q_len;                  /* queue length */
  41         int     q_limit;                /* max queue length */
  42
  43         /* statistics */
  44         struct {
  45                 struct pktcntr  xmit_cnt;
  46                 struct pktcntr  drop_cnt;
  47                 u_int           period;
  48         } q_stats;
  49 } fifoq_state_t;
  50 #endif
  51
  52 struct fifoq_interface {
  53         char    fifoq_ifname[IFNAMSIZ];
  54 };
  55
  56 struct fifoq_getstats {
  57         struct fifoq_interface iface;
  58         int             q_len;
  59         int             q_limit;
  60         struct pktcntr  xmit_cnt;
  61         struct pktcntr  drop_cnt;
  62         u_int           period;
  63 };
  64
  65 struct fifoq_conf {
  66         struct fifoq_interface iface;
  67         int fifoq_limit;
  68 };
  69
  70 #define FIFOQ_LIMIT     50      /* default max queue length */
  71
  72 /*
  73  * IOCTLs for FIFOQ
  74  */
  75 #define FIFOQ_IF_ATTACH         _IOW('Q', 1, struct fifoq_interface)
  76 #define FIFOQ_IF_DETACH         _IOW('Q', 2, struct fifoq_interface)
  77 #define FIFOQ_ENABLE            _IOW('Q', 3, struct fifoq_interface)
  78 #define FIFOQ_DISABLE           _IOW('Q', 4, struct fifoq_interface)
  79 #define FIFOQ_CONFIG            _IOWR('Q', 6, struct fifoq_conf)
  80 #define FIFOQ_GETSTATS          _IOWR('Q', 12, struct fifoq_getstats)
  81
  82 #endif /* _ALTQ_ALTQ_FIFOQ_H_ */