2 * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.
3 * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
4 * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. Neither the name of the project nor the names of its contributors
15 * may be used to endorse or promote products derived from this software
16 * without specific prior written permission.
18 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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21 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
36 #ifndef _NETINET_SCTP_CALLOUT_
37 #define _NETINET_SCTP_CALLOUT_
40 * NOTE: the following MACROS are required for locking the callout
41 * queue along with a lock/mutex in the OS specific headers and
42 * implementation files::
43 * - SCTP_TIMERQ_LOCK()
44 * - SCTP_TIMERQ_UNLOCK()
45 * - SCTP_TIMERQ_LOCK_INIT()
46 * - SCTP_TIMERQ_LOCK_DESTROY()
49 #define _SCTP_NEEDS_CALLOUT_ 1
51 #define SCTP_TICKS_PER_FASTTIMO 20 /* called about every 20ms */
53 #if defined(__Userspace__)
54 #if defined(__Userspace_os_Windows)
55 #define SCTP_TIMERQ_LOCK() EnterCriticalSection(&SCTP_BASE_VAR(timer_mtx))
56 #define SCTP_TIMERQ_UNLOCK() LeaveCriticalSection(&SCTP_BASE_VAR(timer_mtx))
57 #define SCTP_TIMERQ_LOCK_INIT() InitializeCriticalSection(&SCTP_BASE_VAR(timer_mtx))
58 #define SCTP_TIMERQ_LOCK_DESTROY() DeleteCriticalSection(&SCTP_BASE_VAR(timer_mtx))
60 #define SCTP_TIMERQ_LOCK() (void)pthread_mutex_lock(&SCTP_BASE_VAR(timer_mtx))
61 #define SCTP_TIMERQ_UNLOCK() (void)pthread_mutex_unlock(&SCTP_BASE_VAR(timer_mtx))
62 #define SCTP_TIMERQ_LOCK_INIT() (void)pthread_mutex_init(&SCTP_BASE_VAR(timer_mtx), NULL)
63 #define SCTP_TIMERQ_LOCK_DESTROY() (void)pthread_mutex_destroy(&SCTP_BASE_VAR(timer_mtx))
69 TAILQ_HEAD(calloutlist, sctp_callout);
72 TAILQ_ENTRY(sctp_callout) tqe;
73 int c_time; /* ticks to the event */
74 void *c_arg; /* function argument */
75 void (*c_func)(void *); /* function to call */
76 int c_flags; /* state of this entry */
78 typedef struct sctp_callout sctp_os_timer_t;
80 #define SCTP_CALLOUT_ACTIVE 0x0002 /* callout is currently active */
81 #define SCTP_CALLOUT_PENDING 0x0004 /* callout is waiting for timeout */
83 void sctp_os_timer_init(sctp_os_timer_t *tmr);
84 void sctp_os_timer_start(sctp_os_timer_t *, int, void (*)(void *), void *);
85 int sctp_os_timer_stop(sctp_os_timer_t *);
87 #define SCTP_OS_TIMER_INIT sctp_os_timer_init
88 #define SCTP_OS_TIMER_START sctp_os_timer_start
89 #define SCTP_OS_TIMER_STOP sctp_os_timer_stop
90 /* MT FIXME: Is the following correct? */
91 #define SCTP_OS_TIMER_STOP_DRAIN SCTP_OS_TIMER_STOP
92 #define SCTP_OS_TIMER_PENDING(tmr) ((tmr)->c_flags & SCTP_CALLOUT_PENDING)
93 #define SCTP_OS_TIMER_ACTIVE(tmr) ((tmr)->c_flags & SCTP_CALLOUT_ACTIVE)
94 #define SCTP_OS_TIMER_DEACTIVATE(tmr) ((tmr)->c_flags &= ~SCTP_CALLOUT_ACTIVE)
96 #if defined(__Userspace__)
97 void sctp_start_timer(void);
99 #if defined(__APPLE__)
100 void sctp_timeout(void *);