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. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  *      @(#)tcp_timer.h 8.1 (Berkeley) 6/10/93
  34  * $FreeBSD: src/sys/netinet/tcp_timer.h,v 1.18.2.1 2002/08/16 22:16:39 dillon Exp $
  35  * $DragonFly: src/sys/netinet/tcp_timer.h,v 1.3 2003/08/23 11:18:00 rob Exp $
  36  */
  37
  38 #ifndef _NETINET_TCP_TIMER2_H_
  39 #define _NETINET_TCP_TIMER2_H_
  40
  41 #ifdef _KERNEL
  42
  43 #ifndef _SYS_PARAM_H_
  44 #include <sys/param.h>
  45 #endif
  46
  47 #ifndef _SYS_SYSTM_H_
  48 #include <sys/systm.h>
  49 #endif
  50
  51 #ifndef _SYS_THREAD2_H_
  52 #include <sys/thread2.h>
  53 #endif
  54
  55 #ifndef _SYS_CALLOUT_H_
  56 #include <sys/callout.h>
  57 #endif
  58
  59 #ifndef _NETINET_TCP_VAR_H_
  60 #include <netinet/tcp_var.h>
  61 #endif
  62
  63 #ifndef _NETINET_TCP_TIMER_H_
  64 #include <netinet/tcp_timer.h>
  65 #endif
  66
  67 static __inline void
  68 tcp_callout_stop(struct tcpcb *_tp, struct tcp_callout *_tc)
  69 {
  70         KKASSERT(_tp->tt_msg->tt_cpuid == mycpuid);
  71
  72         crit_enter();
  73         callout_stop(&_tc->tc_callout);
  74         _tp->tt_msg->tt_tasks &= ~_tc->tc_task;
  75         _tp->tt_msg->tt_running_tasks &= ~_tc->tc_task;
  76         crit_exit();
  77 }
  78
  79 static __inline void
  80 tcp_callout_reset(struct tcpcb *_tp, struct tcp_callout *_tc, int _to_ticks,
  81                   void (*_func)(void *))
  82 {
  83         KKASSERT(_tp->tt_msg->tt_cpuid == mycpuid);
  84
  85         crit_enter();
  86         callout_reset(&_tc->tc_callout, _to_ticks, _func, _tp);
  87         _tp->tt_msg->tt_tasks &= ~_tc->tc_task;
  88         _tp->tt_msg->tt_running_tasks &= ~_tc->tc_task;
  89         crit_exit();
  90 }
  91
  92 static __inline int
  93 tcp_callout_active(struct tcpcb *_tp, struct tcp_callout *_tc)
  94 {
  95         int _act;
  96
  97         KKASSERT(_tp->tt_msg->tt_cpuid == mycpuid);
  98
  99         crit_enter();
 100         _act = callout_active(&_tc->tc_callout);
 101         if (!_act) {
 102                 _act = (_tp->tt_msg->tt_tasks |
 103                         _tp->tt_msg->tt_running_tasks) & _tc->tc_task;
 104         }
 105         crit_exit();
 106         return _act;
 107 }
 108
 109 static __inline int
 110 tcp_callout_pending(struct tcpcb *_tp, struct tcp_callout *_tc)
 111 {
 112         KKASSERT(_tp->tt_msg->tt_cpuid == mycpuid);
 113
 114         return callout_pending(&_tc->tc_callout);
 115 }
 116
 117 #endif  /* !_KERNEL */
 118
 119 #endif  /* _NETINET_TCP_TIMER2_H_ */