/*- * 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. */ #ifdef __FreeBSD__ #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(__Userspace_os_Windows) #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 #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)) #define SCTP_TIMERQ_LOCK_INIT() (void)pthread_mutex_init(&SCTP_BASE_VAR(timer_mtx), NULL) #define SCTP_TIMERQ_LOCK_DESTROY() (void)pthread_mutex_destroy(&SCTP_BASE_VAR(timer_mtx)) #endif extern int ticks; #endif TAILQ_HEAD(calloutlist, sctp_callout); struct sctp_callout { TAILQ_ENTRY(sctp_callout) tqe; int 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); void sctp_os_timer_start(sctp_os_timer_t *, int, void (*)(void *), void *); int sctp_os_timer_stop(sctp_os_timer_t *); #define SCTP_OS_TIMER_INIT sctp_os_timer_init #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(void); #endif #if defined(__APPLE__) void sctp_timeout(void *); #endif #endif