2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.
5 * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
6 * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the project nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 #if defined(__FreeBSD__) && !defined(__Userspace__)
34 #include <sys/cdefs.h>
35 __FBSDID("$FreeBSD$");
38 #ifndef _NETINET_SCTP_CALLOUT_
39 #define _NETINET_SCTP_CALLOUT_
42 * NOTE: the following MACROS are required for locking the callout
43 * queue along with a lock/mutex in the OS specific headers and
44 * implementation files::
45 * - SCTP_TIMERQ_LOCK()
46 * - SCTP_TIMERQ_UNLOCK()
47 * - SCTP_TIMERQ_LOCK_INIT()
48 * - SCTP_TIMERQ_LOCK_DESTROY()
51 #define _SCTP_NEEDS_CALLOUT_ 1
53 #define SCTP_TICKS_PER_FASTTIMO 20 /* called about every 20ms */
55 #if defined(__Userspace__)
57 #define SCTP_TIMERQ_LOCK() EnterCriticalSection(&SCTP_BASE_VAR(timer_mtx))
58 #define SCTP_TIMERQ_UNLOCK() LeaveCriticalSection(&SCTP_BASE_VAR(timer_mtx))
59 #define SCTP_TIMERQ_LOCK_INIT() InitializeCriticalSection(&SCTP_BASE_VAR(timer_mtx))
60 #define SCTP_TIMERQ_LOCK_DESTROY() DeleteCriticalSection(&SCTP_BASE_VAR(timer_mtx))
63 #define SCTP_TIMERQ_LOCK() KASSERT(pthread_mutex_lock(&SCTP_BASE_VAR(timer_mtx)) == 0, ("%s: timer_mtx already locked", __func__))
64 #define SCTP_TIMERQ_UNLOCK() KASSERT(pthread_mutex_unlock(&SCTP_BASE_VAR(timer_mtx)) == 0, ("%s: timer_mtx not locked", __func__))
66 #define SCTP_TIMERQ_LOCK() (void)pthread_mutex_lock(&SCTP_BASE_VAR(timer_mtx))
67 #define SCTP_TIMERQ_UNLOCK() (void)pthread_mutex_unlock(&SCTP_BASE_VAR(timer_mtx))
69 #define SCTP_TIMERQ_LOCK_INIT() (void)pthread_mutex_init(&SCTP_BASE_VAR(timer_mtx), &SCTP_BASE_VAR(mtx_attr))
70 #define SCTP_TIMERQ_LOCK_DESTROY() (void)pthread_mutex_destroy(&SCTP_BASE_VAR(timer_mtx))
74 uint32_t sctp_get_tick_count(void);
76 TAILQ_HEAD(calloutlist, sctp_callout);
79 TAILQ_ENTRY(sctp_callout) tqe;
80 uint32_t c_time; /* ticks to the event */
81 void *c_arg; /* function argument */
82 void (*c_func)(void *); /* function to call */
83 int c_flags; /* state of this entry */
85 typedef struct sctp_callout sctp_os_timer_t;
87 #define SCTP_CALLOUT_ACTIVE 0x0002 /* callout is currently active */
88 #define SCTP_CALLOUT_PENDING 0x0004 /* callout is waiting for timeout */
90 void sctp_os_timer_init(sctp_os_timer_t *tmr);
91 /* Returns 1 if pending timer was rescheduled, 0 otherwise. */
92 int sctp_os_timer_start(sctp_os_timer_t *, uint32_t, void (*)(void *), void *);
93 /* Returns 1 if pending timer was stopped, 0 otherwise. */
94 int sctp_os_timer_stop(sctp_os_timer_t *);
95 void sctp_handle_tick(uint32_t);
97 #define SCTP_OS_TIMER_INIT sctp_os_timer_init
99 * NOTE: The next two shouldn't be called directly outside of sctp_timer_start()
100 * and sctp_timer_stop(), since they don't handle incrementing/decrementing
101 * relevant reference counts.
103 #define SCTP_OS_TIMER_START sctp_os_timer_start
104 #define SCTP_OS_TIMER_STOP sctp_os_timer_stop
105 /* MT FIXME: Is the following correct? */
106 #define SCTP_OS_TIMER_STOP_DRAIN SCTP_OS_TIMER_STOP
107 #define SCTP_OS_TIMER_PENDING(tmr) ((tmr)->c_flags & SCTP_CALLOUT_PENDING)
108 #define SCTP_OS_TIMER_ACTIVE(tmr) ((tmr)->c_flags & SCTP_CALLOUT_ACTIVE)
109 #define SCTP_OS_TIMER_DEACTIVATE(tmr) ((tmr)->c_flags &= ~SCTP_CALLOUT_ACTIVE)
111 #if defined(__Userspace__)
112 void sctp_start_timer_thread(void);
113 void sctp_stop_timer_thread(void);
115 #if defined(__APPLE__) && !defined(__Userspace__)
116 void sctp_timeout(void *);