sys/netinet/sctp_callout.h

   1 /*      $KAME: sctp_callout.h,v 1.8 2005/01/25 07:35:42 itojun Exp $    */
   2 /*      $DragonFly: src/sys/netinet/sctp_callout.h,v 1.3 2006/05/20 02:42:12 dillon Exp $       */
   3
   4 #ifndef _NETINET_SCTP_CALLOUT_H_
   5 #define _NETINET_SCTP_CALLOUT_H_
   6
   7 #ifndef _SYS_QUEUE_H_
   8 #include <sys/queue.h>
   9 #endif
  10
  11 /*
  12  * Copyright (C) 2002, 2003, 2004 Cisco Systems Inc,
  13  * All rights reserved.
  14  *
  15  * Redistribution and use in source and binary forms, with or without
  16  * modification, are permitted provided that the following conditions
  17  * are met:
  18  * 1. Redistributions of source code must retain the above copyright
  19  *    notice, this list of conditions and the following disclaimer.
  20  * 2. Redistributions in binary form must reproduce the above copyright
  21  *    notice, this list of conditions and the following disclaimer in the
  22  *    documentation and/or other materials provided with the distribution.
  23  * 3. Neither the name of the project nor the names of its contributors
  24  *    may be used to endorse or promote products derived from this software
  25  *    without specific prior written permission.
  26  *
  27  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  28  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  29  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  30  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  31  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  32  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  33  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  34  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  35  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  36  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  37  * SUCH DAMAGE.
  38  */
  39
  40 #define _SCTP_NEEDS_CALLOUT_ 1
  41
  42 #ifndef __NetBSD__
  43 struct callout {
  44         TAILQ_ENTRY(callout) tqe;
  45         int     c_time;                         /* ticks to the event */
  46         void    *c_arg;                         /* function argument */
  47         void    (*c_func)(void *);              /* function to call */
  48         int     c_flags;                        /* state of this entry */
  49 };
  50 #endif
  51 #define SCTP_TICKS_PER_FASTTIMO 20              /* we get called about */
  52                                                 /* every 20ms */
  53
  54 TAILQ_HEAD(calloutlist, callout);
  55
  56 #define CALLOUT_ACTIVE          0x0002 /* callout is currently active */
  57 #ifndef __NetBSD__
  58 #define CALLOUT_PENDING         0x0004 /* callout is waiting for timeout */
  59 #define CALLOUT_FIRED           0x0008 /* it expired */
  60 #endif
  61
  62 #define callout_active(c)       ((c)->c_flags & CALLOUT_ACTIVE)
  63 #define callout_deactivate(c)   ((c)->c_flags &= ~CALLOUT_ACTIVE)
  64 void    callout_init(struct callout *);
  65 #define callout_pending(c)      ((c)->c_flags & CALLOUT_PENDING)
  66
  67 void    callout_reset(struct callout *, int, void (*)(void *), void *);
  68 #ifndef __NetBSD__
  69 int     callout_stop(struct callout *);
  70 #endif
  71 #endif