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Diffstat (limited to '')
| -rw-r--r-- | netwerk/sctp/src/netinet/sctp_callout.h | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/netwerk/sctp/src/netinet/sctp_callout.h b/netwerk/sctp/src/netinet/sctp_callout.h new file mode 100644 index 0000000000..81fd8530d1 --- /dev/null +++ b/netwerk/sctp/src/netinet/sctp_callout.h @@ -0,0 +1,119 @@ +/*- + * SPDX-License-Identifier: BSD-3-Clause + * + * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved. + * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved. + * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the project nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(__FreeBSD__) && !defined(__Userspace__) +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); +#endif + +#ifndef _NETINET_SCTP_CALLOUT_ +#define _NETINET_SCTP_CALLOUT_ + +/* + * NOTE: the following MACROS are required for locking the callout + * queue along with a lock/mutex in the OS specific headers and + * implementation files:: + * - SCTP_TIMERQ_LOCK() + * - SCTP_TIMERQ_UNLOCK() + * - SCTP_TIMERQ_LOCK_INIT() + * - SCTP_TIMERQ_LOCK_DESTROY() + */ + +#define _SCTP_NEEDS_CALLOUT_ 1 + +#define SCTP_TICKS_PER_FASTTIMO 20 /* called about every 20ms */ + +#if defined(__Userspace__) +#if defined(_WIN32) +#define SCTP_TIMERQ_LOCK() EnterCriticalSection(&SCTP_BASE_VAR(timer_mtx)) +#define SCTP_TIMERQ_UNLOCK() LeaveCriticalSection(&SCTP_BASE_VAR(timer_mtx)) +#define SCTP_TIMERQ_LOCK_INIT() InitializeCriticalSection(&SCTP_BASE_VAR(timer_mtx)) +#define SCTP_TIMERQ_LOCK_DESTROY() DeleteCriticalSection(&SCTP_BASE_VAR(timer_mtx)) +#else +#ifdef INVARIANTS +#define SCTP_TIMERQ_LOCK() KASSERT(pthread_mutex_lock(&SCTP_BASE_VAR(timer_mtx)) == 0, ("%s: timer_mtx already locked", __func__)) +#define SCTP_TIMERQ_UNLOCK() KASSERT(pthread_mutex_unlock(&SCTP_BASE_VAR(timer_mtx)) == 0, ("%s: timer_mtx not locked", __func__)) +#else +#define SCTP_TIMERQ_LOCK() (void)pthread_mutex_lock(&SCTP_BASE_VAR(timer_mtx)) +#define SCTP_TIMERQ_UNLOCK() (void)pthread_mutex_unlock(&SCTP_BASE_VAR(timer_mtx)) +#endif +#define SCTP_TIMERQ_LOCK_INIT() (void)pthread_mutex_init(&SCTP_BASE_VAR(timer_mtx), &SCTP_BASE_VAR(mtx_attr)) +#define SCTP_TIMERQ_LOCK_DESTROY() (void)pthread_mutex_destroy(&SCTP_BASE_VAR(timer_mtx)) +#endif +#endif + +uint32_t sctp_get_tick_count(void); + +TAILQ_HEAD(calloutlist, sctp_callout); + +struct sctp_callout { + TAILQ_ENTRY(sctp_callout) tqe; + uint32_t c_time; /* ticks to the event */ + void *c_arg; /* function argument */ + void (*c_func)(void *); /* function to call */ + int c_flags; /* state of this entry */ +}; +typedef struct sctp_callout sctp_os_timer_t; + +#define SCTP_CALLOUT_ACTIVE 0x0002 /* callout is currently active */ +#define SCTP_CALLOUT_PENDING 0x0004 /* callout is waiting for timeout */ + +void sctp_os_timer_init(sctp_os_timer_t *tmr); +/* Returns 1 if pending timer was rescheduled, 0 otherwise. */ +int sctp_os_timer_start(sctp_os_timer_t *, uint32_t, void (*)(void *), void *); +/* Returns 1 if pending timer was stopped, 0 otherwise. */ +int sctp_os_timer_stop(sctp_os_timer_t *); +void sctp_handle_tick(uint32_t); + +#define SCTP_OS_TIMER_INIT sctp_os_timer_init +/* + * NOTE: The next two shouldn't be called directly outside of sctp_timer_start() + * and sctp_timer_stop(), since they don't handle incrementing/decrementing + * relevant reference counts. + */ +#define SCTP_OS_TIMER_START sctp_os_timer_start +#define SCTP_OS_TIMER_STOP sctp_os_timer_stop +/* MT FIXME: Is the following correct? */ +#define SCTP_OS_TIMER_STOP_DRAIN SCTP_OS_TIMER_STOP +#define SCTP_OS_TIMER_PENDING(tmr) ((tmr)->c_flags & SCTP_CALLOUT_PENDING) +#define SCTP_OS_TIMER_ACTIVE(tmr) ((tmr)->c_flags & SCTP_CALLOUT_ACTIVE) +#define SCTP_OS_TIMER_DEACTIVATE(tmr) ((tmr)->c_flags &= ~SCTP_CALLOUT_ACTIVE) + +#if defined(__Userspace__) +void sctp_start_timer_thread(void); +void sctp_stop_timer_thread(void); +#endif +#if defined(__APPLE__) && !defined(__Userspace__) +void sctp_timeout(void *); +#endif + +#endif |