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
tcp_callout_stop(struct tcpcb * _tp,struct tcp_callout * _tc)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
tcp_callout_terminate(struct tcpcb * _tp,struct tcp_callout * _tc)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
tcp_callout_reset(struct tcpcb * _tp,struct tcp_callout * _tc,int _to_ticks,void (* _func)(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
tcp_callout_active(struct tcpcb * _tp,struct tcp_callout * _tc)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
tcp_callout_pending(struct tcpcb * _tp,struct tcp_callout * _tc)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_ */
128