Remove tcpcb.tt_msg == NULL tests in tcp_callout_*().
[dragonfly.git] / sys / netinet / tcp_timer2.h
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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_THREAD2_H_
44#include <sys/thread2.h>
45#endif
46
47#ifndef _SYS_CALLOUT_H_
48#include <sys/callout.h>
49#endif
50
51#ifndef _NETINET_TCP_VAR_H_
52#include <netinet/tcp_var.h>
53#endif
54
55#ifndef _NETINET_TCP_TIMER_H_
56#include <netinet/tcp_timer.h>
57#endif
58
59static __inline void
60tcp_callout_stop(struct tcpcb *_tp, struct tcp_callout *_tc)
61{
62 crit_enter();
63 callout_stop(&_tc->tc_callout);
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64 _tp->tt_msg->tt_tasks &= ~_tc->tc_task;
65 _tp->tt_msg->tt_running_tasks &= ~_tc->tc_task;
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66 crit_exit();
67}
68
69static __inline void
70tcp_callout_reset(struct tcpcb *_tp, struct tcp_callout *_tc, int _to_ticks,
71 void (*_func)(void *))
72{
73 crit_enter();
74 callout_reset(&_tc->tc_callout, _to_ticks, _func, _tp);
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75 _tp->tt_msg->tt_tasks &= ~_tc->tc_task;
76 _tp->tt_msg->tt_running_tasks &= ~_tc->tc_task;
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77 crit_exit();
78}
79
80static __inline int
81tcp_callout_active(struct tcpcb *_tp, struct tcp_callout *_tc)
82{
83 int _act;
84
85 crit_enter();
86 _act = callout_active(&_tc->tc_callout);
2d42d2b0 87 if (!_act) {
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88 _act = (_tp->tt_msg->tt_tasks |
89 _tp->tt_msg->tt_running_tasks) & _tc->tc_task;
90 }
91 crit_exit();
92 return _act;
93}
94
95static __inline int
96tcp_callout_pending(struct tcpcb *_tp __unused, struct tcp_callout *_tc)
97{
98 return callout_pending(&_tc->tc_callout);
99}
100
101#endif /* !_KERNEL */
102
103#endif /* _NETINET_TCP_TIMER2_H_ */