sys/netinet/tcp_timer2.h

   1 /*
   2  * Copyright (c) 1982, 1986, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 THE REGENTS 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  *      @(#)tcp_timer.h 8.1 (Berkeley) 6/10/93
  30  * $FreeBSD: src/sys/netinet/tcp_timer.h,v 1.18.2.1 2002/08/16 22:16:39 dillon Exp $
  31  * $DragonFly: src/sys/netinet/tcp_timer.h,v 1.3 2003/08/23 11:18:00 rob Exp $
  32  */
  33
  34 #ifndef _NETINET_TCP_TIMER2_H_
  35 #define _NETINET_TCP_TIMER2_H_
  36
  37 #ifdef _KERNEL
  38
  39 #ifndef _SYS_PARAM_H_
  40 #include <sys/param.h>
  41 #endif
  42
  43 #ifndef _SYS_SYSTM_H_
  44 #include <sys/systm.h>
  45 #endif
  46
  47 #ifndef _SYS_THREAD2_H_
  48 #include <sys/thread2.h>
  49 #endif
  50
  51 #ifndef _SYS_CALLOUT_H_
  52 #include <sys/callout.h>
  53 #endif
  54
  55 #ifndef _NETINET_TCP_VAR_H_
  56 #include <netinet/tcp_var.h>
  57 #endif
  58
  59 #ifndef _NETINET_TCP_TIMER_H_
  60 #include <netinet/tcp_timer.h>
  61 #endif
  62
  63 static __inline void
  64 tcp_callout_stop(struct tcpcb *_tp, struct tcp_callout *_tc)
  65 {
  66         KKASSERT(_tp->tt_msg->tt_cpuid == mycpuid);
  67
  68         crit_enter();
  69         callout_stop(&_tc->tc_callout);
  70         _tp->tt_msg->tt_tasks &= ~_tc->tc_task;
  71         _tp->tt_msg->tt_running_tasks &= ~_tc->tc_task;
  72         crit_exit();
  73 }
  74
  75 static __inline void
  76 tcp_callout_terminate(struct tcpcb *_tp, struct tcp_callout *_tc)
  77 {
  78         KKASSERT(_tp->tt_msg->tt_cpuid == mycpuid);
  79
  80         crit_enter();
  81         callout_terminate(&_tc->tc_callout);
  82         _tp->tt_msg->tt_tasks &= ~_tc->tc_task;
  83         _tp->tt_msg->tt_running_tasks &= ~_tc->tc_task;
  84         crit_exit();
  85 }
  86
  87 static __inline void
  88 tcp_callout_reset(struct tcpcb *_tp, struct tcp_callout *_tc, int _to_ticks,
  89                   void (*_func)(void *))
  90 {
  91         KKASSERT(_tp->tt_msg->tt_cpuid == mycpuid);
  92
  93         crit_enter();
  94         callout_reset(&_tc->tc_callout, _to_ticks, _func, _tp);
  95         _tp->tt_msg->tt_tasks &= ~_tc->tc_task;
  96         _tp->tt_msg->tt_running_tasks &= ~_tc->tc_task;
  97         crit_exit();
  98 }
  99
 100 static __inline int
 101 tcp_callout_active(struct tcpcb *_tp, struct tcp_callout *_tc)
 102 {
 103         int _act;
 104
 105         KKASSERT(_tp->tt_msg->tt_cpuid == mycpuid);
 106
 107         crit_enter();
 108         _act = callout_active(&_tc->tc_callout);
 109         if (!_act) {
 110                 _act = (_tp->tt_msg->tt_tasks |
 111                         _tp->tt_msg->tt_running_tasks) & _tc->tc_task;
 112         }
 113         crit_exit();
 114         return _act;
 115 }
 116
 117 static __inline int
 118 tcp_callout_pending(struct tcpcb *_tp, struct tcp_callout *_tc)
 119 {
 120         KKASSERT(_tp->tt_msg->tt_cpuid == mycpuid);
 121
 122         return callout_pending(&_tc->tc_callout);
 123 }
 124
 125 #endif  /* !_KERNEL */
 126
 127 #endif  /* _NETINET_TCP_TIMER2_H_ */