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 /*-

  * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.

  * Copyright (c) 2008-2011, by Randall Stewart. All rights reserved.

  * Copyright (c) 2008-2011, 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:

  *

  * a) Redistributions of source code must retain the above copyright notice,

  *   this list of conditions and the following disclaimer.

  *

  * b) 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.

  *

  * c) Neither the name of Cisco Systems, Inc. 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 COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.

  */

 #ifndef __sctp_process_lock_h__

 #define __sctp_process_lock_h__

 /*

  * Need to yet define five atomic fuctions or

  * their equivalant.

  * - atomic_add_int(&foo, val) - add atomically the value

  * - atomic_fetchadd_int(&foo, val) - does same as atomic_add_int

  *				      but value it was is returned.

  * - atomic_subtract_int(&foo, val) - can be made from atomic_add_int()

  *

  * - atomic_cmpset_int(&foo, value, newvalue) - Does a set of newvalue

  *					        in foo if and only if

  *					        foo is value. Returns 0

  *					        on success.

  */

 #ifdef SCTP_PER_SOCKET_LOCKING

 /*

  * per socket level locking

  */

 #if defined(__Userspace_os_Windows)

 /* Lock for INFO stuff */

 #define SCTP_INP_INFO_LOCK_INIT()

 #define SCTP_INP_INFO_RLOCK()

 #define SCTP_INP_INFO_RUNLOCK()

 #define SCTP_INP_INFO_WLOCK()

 #define SCTP_INP_INFO_WUNLOCK()

 #define SCTP_INP_INFO_LOCK_DESTROY()

 #define SCTP_IPI_COUNT_INIT()

 #define SCTP_IPI_COUNT_DESTROY()

 #else

 #define SCTP_INP_INFO_LOCK_INIT()

 #define SCTP_INP_INFO_RLOCK()

 #define SCTP_INP_INFO_RUNLOCK()

 #define SCTP_INP_INFO_WLOCK()

 #define SCTP_INP_INFO_WUNLOCK()

 #define SCTP_INP_INFO_LOCK_DESTROY()

 #define SCTP_IPI_COUNT_INIT()

 #define SCTP_IPI_COUNT_DESTROY()

 #endif

 #define SCTP_TCB_SEND_LOCK_INIT(_tcb)

 #define SCTP_TCB_SEND_LOCK_DESTROY(_tcb)

 #define SCTP_TCB_SEND_LOCK(_tcb)

 #define SCTP_TCB_SEND_UNLOCK(_tcb)

 /* Lock for INP */

 #define SCTP_INP_LOCK_INIT(_inp)

 #define SCTP_INP_LOCK_DESTROY(_inp)

 #define SCTP_INP_RLOCK(_inp)

 #define SCTP_INP_RUNLOCK(_inp)

 #define SCTP_INP_WLOCK(_inp)

 #define SCTP_INP_WUNLOCK(_inep)

 #define SCTP_INP_INCR_REF(_inp)

 #define SCTP_INP_DECR_REF(_inp)

 #define SCTP_ASOC_CREATE_LOCK_INIT(_inp)

 #define SCTP_ASOC_CREATE_LOCK_DESTROY(_inp)

 #define SCTP_ASOC_CREATE_LOCK(_inp)

 #define SCTP_ASOC_CREATE_UNLOCK(_inp)

 #define SCTP_INP_READ_INIT(_inp)

 #define SCTP_INP_READ_DESTROY(_inp)

 #define SCTP_INP_READ_LOCK(_inp)

 #define SCTP_INP_READ_UNLOCK(_inp)

 /* Lock for TCB */

 #define SCTP_TCB_LOCK_INIT(_tcb)

 #define SCTP_TCB_LOCK_DESTROY(_tcb)

 #define SCTP_TCB_LOCK(_tcb)

 #define SCTP_TCB_TRYLOCK(_tcb) 1

 #define SCTP_TCB_UNLOCK(_tcb)

 #define SCTP_TCB_UNLOCK_IFOWNED(_tcb)

 #define SCTP_TCB_LOCK_ASSERT(_tcb)

 #else

 /*

  * per tcb level locking

  */

 #define SCTP_IPI_COUNT_INIT()

 #if defined(__Userspace_os_Windows)

 #define SCTP_WQ_ADDR_INIT() \

         InitializeCriticalSection(&SCTP_BASE_INFO(wq_addr_mtx))

 #define SCTP_WQ_ADDR_DESTROY() \

 	DeleteCriticalSection(&SCTP_BASE_INFO(wq_addr_mtx))

 #define SCTP_WQ_ADDR_LOCK() \

         EnterCriticalSection(&SCTP_BASE_INFO(wq_addr_mtx))

 #define SCTP_WQ_ADDR_UNLOCK() \

         LeaveCriticalSection(&SCTP_BASE_INFO(wq_addr_mtx))

 #define SCTP_INP_INFO_LOCK_INIT() \

 	InitializeCriticalSection(&SCTP_BASE_INFO(ipi_ep_mtx))

 #define SCTP_INP_INFO_LOCK_DESTROY() \

 	DeleteCriticalSection(&SCTP_BASE_INFO(ipi_ep_mtx))

 #define SCTP_INP_INFO_RLOCK() \

 	EnterCriticalSection(&SCTP_BASE_INFO(ipi_ep_mtx))

 #define SCTP_INP_INFO_TRYLOCK()	\

         TryEnterCriticalSection(&SCTP_BASE_INFO(ipi_ep_mtx))

 #define SCTP_INP_INFO_WLOCK() \

 	EnterCriticalSection(&SCTP_BASE_INFO(ipi_ep_mtx))

 #define SCTP_INP_INFO_RUNLOCK() \

  	LeaveCriticalSection(&SCTP_BASE_INFO(ipi_ep_mtx))

 #define SCTP_INP_INFO_WUNLOCK()	\

 	LeaveCriticalSection(&SCTP_BASE_INFO(ipi_ep_mtx))

 #define SCTP_IP_PKTLOG_INIT() \

         InitializeCriticalSection(&SCTP_BASE_INFO(ipi_pktlog_mtx))

 #define SCTP_IP_PKTLOG_DESTROY () \

 	DeleteCriticalSection(&SCTP_BASE_INFO(ipi_pktlog_mtx))

 #define SCTP_IP_PKTLOG_LOCK() \

     	EnterCriticalSection(&SCTP_BASE_INFO(ipi_pktlog_mtx))

 #define SCTP_IP_PKTLOG_UNLOCK() \

 	LeaveCriticalSection(&SCTP_BASE_INFO(ipi_pktlog_mtx))

 /*

  * The INP locks we will use for locking an SCTP endpoint, so for example if

  * we want to change something at the endpoint level for example random_store

  * or cookie secrets we lock the INP level.

  */

 #define SCTP_INP_READ_INIT(_inp) \

 	InitializeCriticalSection(&(_inp)->inp_rdata_mtx)

 #define SCTP_INP_READ_DESTROY(_inp) \

 	DeleteCriticalSection(&(_inp)->inp_rdata_mtx)

 #define SCTP_INP_READ_LOCK(_inp) \

 	EnterCriticalSection(&(_inp)->inp_rdata_mtx)

 #define SCTP_INP_READ_UNLOCK(_inp) \

 	LeaveCriticalSection(&(_inp)->inp_rdata_mtx)

 #define SCTP_INP_LOCK_INIT(_inp) \

 	InitializeCriticalSection(&(_inp)->inp_mtx)

 #define SCTP_ASOC_CREATE_LOCK_INIT(_inp) \

 	InitializeCriticalSection(&(_inp)->inp_create_mtx)

 #define SCTP_INP_LOCK_DESTROY(_inp) \

 	DeleteCriticalSection(&(_inp)->inp_mtx)

 #define SCTP_ASOC_CREATE_LOCK_DESTROY(_inp) \

 	DeleteCriticalSection(&(_inp)->inp_create_mtx)

 #ifdef SCTP_LOCK_LOGGING

 #define SCTP_INP_RLOCK(_inp)	do { 					\

 	if(SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LOCK_LOGGING_ENABLE) sctp_log_lock(_inp, (struct sctp_tcb *)NULL, SCTP_LOG_LOCK_INP);\

 	EnterCriticalSection(&(_inp)->inp_mtx);			\

 } while (0)

 #define SCTP_INP_WLOCK(_inp)	do { 					\

 	sctp_log_lock(_inp, (struct sctp_tcb *)NULL, SCTP_LOG_LOCK_INP);\

 	EnterCriticalSection(&(_inp)->inp_mtx);			\

 } while (0)

 #else

 #define SCTP_INP_RLOCK(_inp)	do { 					\

 	EnterCriticalSection(&(_inp)->inp_mtx);			\

 } while (0)

 #define SCTP_INP_WLOCK(_inp)	do { 					\

 	EnterCriticalSection(&(_inp)->inp_mtx);			\

 } while (0)

 #endif

 #define SCTP_TCB_SEND_LOCK_INIT(_tcb) \

 	InitializeCriticalSection(&(_tcb)->tcb_send_mtx)

 #define SCTP_TCB_SEND_LOCK_DESTROY(_tcb) \

 	DeleteCriticalSection(&(_tcb)->tcb_send_mtx)

 #define SCTP_TCB_SEND_LOCK(_tcb) do { \

 	EnterCriticalSection(&(_tcb)->tcb_send_mtx); \

 } while (0)

 #define SCTP_TCB_SEND_UNLOCK(_tcb) \

 	LeaveCriticalSection(&(_tcb)->tcb_send_mtx)

 #define SCTP_INP_INCR_REF(_inp) atomic_add_int(&((_inp)->refcount), 1)

 #define SCTP_INP_DECR_REF(_inp) atomic_add_int(&((_inp)->refcount), -1)

 #ifdef SCTP_LOCK_LOGGING

 #define SCTP_ASOC_CREATE_LOCK(_inp) do {				\

 	if(SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LOCK_LOGGING_ENABLE) sctp_log_lock(_inp, (struct sctp_tcb *)NULL, SCTP_LOG_LOCK_CREATE); \

 	EnterCriticalSection(&(_inp)->inp_create_mtx);		\

 } while (0)

 #else

 #define SCTP_ASOC_CREATE_LOCK(_inp) do {				\

 	EnterCriticalSection(&(_inp)->inp_create_mtx);		\

 } while (0)

 #endif

 #define SCTP_INP_RUNLOCK(_inp) \

 	LeaveCriticalSection(&(_inp)->inp_mtx)

 #define SCTP_INP_WUNLOCK(_inp) \

 	LeaveCriticalSection(&(_inp)->inp_mtx)

 #define SCTP_ASOC_CREATE_UNLOCK(_inp) \

 	LeaveCriticalSection(&(_inp)->inp_create_mtx)

 /*

  * For the majority of things (once we have found the association) we will

  * lock the actual association mutex. This will protect all the assoiciation

  * level queues and streams and such. We will need to lock the socket layer

  * when we stuff data up into the receiving sb_mb. I.e. we will need to do an

  * extra SOCKBUF_LOCK(&so->so_rcv) even though the association is locked.

  */

 #define SCTP_TCB_LOCK_INIT(_tcb) \

 	InitializeCriticalSection(&(_tcb)->tcb_mtx)

 #define SCTP_TCB_LOCK_DESTROY(_tcb) \

 	DeleteCriticalSection(&(_tcb)->tcb_mtx)

 #ifdef SCTP_LOCK_LOGGING

 #define SCTP_TCB_LOCK(_tcb)  do {					\

 	if(SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LOCK_LOGGING_ENABLE) sctp_log_lock(_tcb->sctp_ep, _tcb, SCTP_LOG_LOCK_TCB);		\

 	EnterCriticalSection(&(_tcb)->tcb_mtx);			\

 } while (0)

 #else

 #define SCTP_TCB_LOCK(_tcb)  do {					\

 	EnterCriticalSection(&(_tcb)->tcb_mtx);			\

 } while (0)

 #endif

 #define SCTP_TCB_TRYLOCK(_tcb) 	((TryEnterCriticalSection(&(_tcb)->tcb_mtx)))

 #define SCTP_TCB_UNLOCK(_tcb)	do {  \

 	LeaveCriticalSection(&(_tcb)->tcb_mtx);  \

 } while (0)

 #define SCTP_TCB_LOCK_ASSERT(_tcb)

 #else /* all Userspaces except Windows */

 #define SCTP_WQ_ADDR_INIT() \

         (void)pthread_mutex_init(&SCTP_BASE_INFO(wq_addr_mtx), NULL)

 #define SCTP_WQ_ADDR_DESTROY() \

 	(void)pthread_mutex_destroy(&SCTP_BASE_INFO(wq_addr_mtx))

 #define SCTP_WQ_ADDR_LOCK() \

         (void)pthread_mutex_lock(&SCTP_BASE_INFO(wq_addr_mtx))

 #define SCTP_WQ_ADDR_UNLOCK() \

         (void)pthread_mutex_unlock(&SCTP_BASE_INFO(wq_addr_mtx))

 #define SCTP_INP_INFO_LOCK_INIT() \

 	(void)pthread_mutex_init(&SCTP_BASE_INFO(ipi_ep_mtx), NULL)

 #define SCTP_INP_INFO_LOCK_DESTROY() \

 	(void)pthread_mutex_destroy(&SCTP_BASE_INFO(ipi_ep_mtx))

 #define SCTP_INP_INFO_RLOCK() \

 	(void)pthread_mutex_lock(&SCTP_BASE_INFO(ipi_ep_mtx))

 #define SCTP_INP_INFO_TRYLOCK()	\

         (!(pthread_mutex_trylock(&SCTP_BASE_INFO(ipi_ep_mtx))))

 #define SCTP_INP_INFO_WLOCK() \

 	(void)pthread_mutex_lock(&SCTP_BASE_INFO(ipi_ep_mtx))

 #define SCTP_INP_INFO_RUNLOCK()	\

 	(void)pthread_mutex_unlock(&SCTP_BASE_INFO(ipi_ep_mtx))

 #define SCTP_INP_INFO_WUNLOCK()	\

 	(void)pthread_mutex_unlock(&SCTP_BASE_INFO(ipi_ep_mtx))

 #define SCTP_IP_PKTLOG_INIT() \

         (void)pthread_mutex_init(&SCTP_BASE_INFO(ipi_pktlog_mtx), NULL)

 #define SCTP_IP_PKTLOG_DESTROY() \

 	(void)pthread_mutex_destroy(&SCTP_BASE_INFO(ipi_pktlog_mtx))

 #define SCTP_IP_PKTLOG_LOCK() \

         (void)pthread_mutex_lock(&SCTP_BASE_INFO(ipi_pktlog_mtx))

 #define SCTP_IP_PKTLOG_UNLOCK()	\

         (void)pthread_mutex_unlock(&SCTP_BASE_INFO(ipi_pktlog_mtx))

 /*

  * The INP locks we will use for locking an SCTP endpoint, so for example if

  * we want to change something at the endpoint level for example random_store

  * or cookie secrets we lock the INP level.

  */

 #define SCTP_INP_READ_INIT(_inp) \

 	(void)pthread_mutex_init(&(_inp)->inp_rdata_mtx, NULL)

 #define SCTP_INP_READ_DESTROY(_inp) \

 	(void)pthread_mutex_destroy(&(_inp)->inp_rdata_mtx)

 #define SCTP_INP_READ_LOCK(_inp)	do { \

 	(void)pthread_mutex_lock(&(_inp)->inp_rdata_mtx);    \

 } while (0)

 #define SCTP_INP_READ_UNLOCK(_inp) \

 	(void)pthread_mutex_unlock(&(_inp)->inp_rdata_mtx)

 #define SCTP_INP_LOCK_INIT(_inp) \

 	(void)pthread_mutex_init(&(_inp)->inp_mtx, NULL)

 #define SCTP_ASOC_CREATE_LOCK_INIT(_inp) \

 	(void)pthread_mutex_init(&(_inp)->inp_create_mtx, NULL)

 #define SCTP_INP_LOCK_DESTROY(_inp) \

 	(void)pthread_mutex_destroy(&(_inp)->inp_mtx)

 #define SCTP_ASOC_CREATE_LOCK_DESTROY(_inp) \

 	(void)pthread_mutex_destroy(&(_inp)->inp_create_mtx)

 #ifdef SCTP_LOCK_LOGGING

 #define SCTP_INP_RLOCK(_inp)	do { 					\

 	if(SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LOCK_LOGGING_ENABLE) sctp_log_lock(_inp, (struct sctp_tcb *)NULL, SCTP_LOG_LOCK_INP);\

 	(void)pthread_mutex_lock(&(_inp)->inp_mtx);			\

 } while (0)

 #define SCTP_INP_WLOCK(_inp)	do { 					\

 	sctp_log_lock(_inp, (struct sctp_tcb *)NULL, SCTP_LOG_LOCK_INP);\

 	(void)pthread_mutex_lock(&(_inp)->inp_mtx);			\

 } while (0)

 #else

 #define SCTP_INP_RLOCK(_inp)	do { 					\

 	(void)pthread_mutex_lock(&(_inp)->inp_mtx);			\

 } while (0)

 #define SCTP_INP_WLOCK(_inp)	do { 					\

 	(void)pthread_mutex_lock(&(_inp)->inp_mtx);			\

 } while (0)

 #endif

 #define SCTP_TCB_SEND_LOCK_INIT(_tcb) \

 	(void)pthread_mutex_init(&(_tcb)->tcb_send_mtx, NULL)

 #define SCTP_TCB_SEND_LOCK_DESTROY(_tcb) \

 	(void)pthread_mutex_destroy(&(_tcb)->tcb_send_mtx)

 #define SCTP_TCB_SEND_LOCK(_tcb) do { \

 	(void)pthread_mutex_lock(&(_tcb)->tcb_send_mtx); \

 } while (0)

 #define SCTP_TCB_SEND_UNLOCK(_tcb) \

 	(void)pthread_mutex_unlock(&(_tcb)->tcb_send_mtx)

 #define SCTP_INP_INCR_REF(_inp) atomic_add_int(&((_inp)->refcount), 1)

 #define SCTP_INP_DECR_REF(_inp) atomic_add_int(&((_inp)->refcount), -1)

 #ifdef SCTP_LOCK_LOGGING

 #define SCTP_ASOC_CREATE_LOCK(_inp) do {				\

 	if(SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LOCK_LOGGING_ENABLE) sctp_log_lock(_inp, (struct sctp_tcb *)NULL, SCTP_LOG_LOCK_CREATE); \

 	(void)pthread_mutex_lock(&(_inp)->inp_create_mtx);		\

 } while (0)

 #else

 #define SCTP_ASOC_CREATE_LOCK(_inp) do {				\

 	(void)pthread_mutex_lock(&(_inp)->inp_create_mtx);		\

 } while (0)

 #endif

 #define SCTP_INP_RUNLOCK(_inp) \

 	(void)pthread_mutex_unlock(&(_inp)->inp_mtx)

 #define SCTP_INP_WUNLOCK(_inp) \

 	(void)pthread_mutex_unlock(&(_inp)->inp_mtx)

 #define SCTP_ASOC_CREATE_UNLOCK(_inp) \

 	(void)pthread_mutex_unlock(&(_inp)->inp_create_mtx)

 /*

  * For the majority of things (once we have found the association) we will

  * lock the actual association mutex. This will protect all the assoiciation

  * level queues and streams and such. We will need to lock the socket layer

  * when we stuff data up into the receiving sb_mb. I.e. we will need to do an

  * extra SOCKBUF_LOCK(&so->so_rcv) even though the association is locked.

  */

 #define SCTP_TCB_LOCK_INIT(_tcb) \

 	(void)pthread_mutex_init(&(_tcb)->tcb_mtx, NULL)

 #define SCTP_TCB_LOCK_DESTROY(_tcb) \

 	(void)pthread_mutex_destroy(&(_tcb)->tcb_mtx)

 #ifdef SCTP_LOCK_LOGGING

 #define SCTP_TCB_LOCK(_tcb)  do {					\

 	if(SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LOCK_LOGGING_ENABLE) sctp_log_lock(_tcb->sctp_ep, _tcb, SCTP_LOG_LOCK_TCB);		\

 	(void)pthread_mutex_lock(&(_tcb)->tcb_mtx);			\

 } while (0)

 #else

 #define SCTP_TCB_LOCK(_tcb)  do {					\

 	(void)pthread_mutex_lock(&(_tcb)->tcb_mtx);			\

 } while (0)

 #endif

 #define SCTP_TCB_TRYLOCK(_tcb) 	(!(pthread_mutex_trylock(&(_tcb)->tcb_mtx)))

 #define SCTP_TCB_UNLOCK(_tcb)	(void)pthread_mutex_unlock(&(_tcb)->tcb_mtx)

 #define SCTP_TCB_LOCK_ASSERT(_tcb)

 #endif

 #endif /* SCTP_PER_SOCKET_LOCKING */

 /*

  * common locks

  */

 /* copied over to compile */

 #define SCTP_INP_LOCK_CONTENDED(_inp) (0) /* Don't know if this is possible */

 #define SCTP_INP_READ_CONTENDED(_inp) (0) /* Don't know if this is possible */

 #define SCTP_ASOC_CREATE_LOCK_CONTENDED(_inp) (0) /* Don't know if this is possible */

 /* socket locks */

 #if defined(__Userspace__)

 #if defined(__Userspace_os_Windows)

 #define SOCKBUF_LOCK_ASSERT(_so_buf)

 #define SOCKBUF_LOCK(_so_buf) EnterCriticalSection(&(_so_buf)->sb_mtx)

 #define SOCKBUF_UNLOCK(_so_buf) LeaveCriticalSection(&(_so_buf)->sb_mtx)

 #define SOCK_LOCK(_so)  SOCKBUF_LOCK(&(_so)->so_rcv)

 #define SOCK_UNLOCK(_so)  SOCKBUF_UNLOCK(&(_so)->so_rcv)

 #else

 #define SOCKBUF_LOCK_ASSERT(_so_buf) KASSERT(pthread_mutex_trylock(SOCKBUF_MTX(_so_buf)) == EBUSY, ("%s: socket buffer not locked", __func__))

 #define SOCKBUF_LOCK(_so_buf)   pthread_mutex_lock(SOCKBUF_MTX(_so_buf))

 #define SOCKBUF_UNLOCK(_so_buf) pthread_mutex_unlock(SOCKBUF_MTX(_so_buf))

 #define	SOCK_LOCK(_so)		SOCKBUF_LOCK(&(_so)->so_rcv)

 #define	SOCK_UNLOCK(_so)	SOCKBUF_UNLOCK(&(_so)->so_rcv)

 #endif

 #else

 #define SOCK_LOCK(_so)

 #define SOCK_UNLOCK(_so)

 #define SOCKBUF_LOCK(_so_buf)

 #define SOCKBUF_UNLOCK(_so_buf)

 #define SOCKBUF_LOCK_ASSERT(_so_buf)

 #endif

 #define SCTP_STATLOG_INIT_LOCK()

 #define SCTP_STATLOG_LOCK()

 #define SCTP_STATLOG_UNLOCK()

 #define SCTP_STATLOG_DESTROY()

 #if defined(__Userspace_os_Windows)

 /* address list locks */

 #define SCTP_IPI_ADDR_INIT() \

 	InitializeCriticalSection(&SCTP_BASE_INFO(ipi_addr_mtx))

 #define SCTP_IPI_ADDR_DESTROY() \

 	DeleteCriticalSection(&SCTP_BASE_INFO(ipi_addr_mtx))

 #define SCTP_IPI_ADDR_RLOCK() 						\

 	do { 								\

 		EnterCriticalSection(&SCTP_BASE_INFO(ipi_addr_mtx));	\

 	} while (0)

 #define SCTP_IPI_ADDR_RUNLOCK() \

 	LeaveCriticalSection(&SCTP_BASE_INFO(ipi_addr_mtx))

 #define SCTP_IPI_ADDR_WLOCK() 						\

 	do { 								\

 		EnterCriticalSection(&SCTP_BASE_INFO(ipi_addr_mtx));	\

 	} while (0)

 #define SCTP_IPI_ADDR_WUNLOCK() \

 	LeaveCriticalSection(&SCTP_BASE_INFO(ipi_addr_mtx))

 /* iterator locks */

 #define SCTP_ITERATOR_LOCK_INIT() \

 	InitializeCriticalSection(&sctp_it_ctl.it_mtx)

 #define SCTP_ITERATOR_LOCK() 						\

 	do {								\

 		EnterCriticalSection(&sctp_it_ctl.it_mtx);		\

 	} while (0)

 #define SCTP_ITERATOR_UNLOCK() \

 	LeaveCriticalSection(&sctp_it_ctl.it_mtx)

 #define SCTP_ITERATOR_LOCK_DESTROY() \

 	DeleteCriticalSection(&sctp_it_ctl.it_mtx)

 #define SCTP_IPI_ITERATOR_WQ_INIT() \

 	InitializeCriticalSection(&sctp_it_ctl.ipi_iterator_wq_mtx)

 #define SCTP_IPI_ITERATOR_WQ_DESTROY() \

 	DeleteCriticalSection(&sctp_it_ctl.ipi_iterator_wq_mtx)

 #define SCTP_IPI_ITERATOR_WQ_LOCK() \

 	do { \

 		EnterCriticalSection(&sctp_it_ctl.ipi_iterator_wq_mtx); \

 	} while (0)

 #define SCTP_IPI_ITERATOR_WQ_UNLOCK() \

 	LeaveCriticalSection(&sctp_it_ctl.ipi_iterator_wq_mtx)

 #else /* end of __Userspace_os_Windows */

 /* address list locks */

 #define SCTP_IPI_ADDR_INIT() \

 	(void)pthread_mutex_init(&SCTP_BASE_INFO(ipi_addr_mtx), NULL)

 #define SCTP_IPI_ADDR_DESTROY() \

 	(void)pthread_mutex_destroy(&SCTP_BASE_INFO(ipi_addr_mtx))

 #define SCTP_IPI_ADDR_RLOCK() 						\

 	do { 								\

 		(void)pthread_mutex_lock(&SCTP_BASE_INFO(ipi_addr_mtx));	\

 	} while (0)

 #define SCTP_IPI_ADDR_RUNLOCK() \

 	(void)pthread_mutex_unlock(&SCTP_BASE_INFO(ipi_addr_mtx))

 #define SCTP_IPI_ADDR_WLOCK() 						\

 	do { 								\

 		(void)pthread_mutex_lock(&SCTP_BASE_INFO(ipi_addr_mtx));	\

 	} while (0)

 #define SCTP_IPI_ADDR_WUNLOCK() \

 	(void)pthread_mutex_unlock(&SCTP_BASE_INFO(ipi_addr_mtx))

 /* iterator locks */

 #define SCTP_ITERATOR_LOCK_INIT() \

 	(void)pthread_mutex_init(&sctp_it_ctl.it_mtx, NULL)

 #define SCTP_ITERATOR_LOCK() 						\

 	do {								\

 		(void)pthread_mutex_lock(&sctp_it_ctl.it_mtx);		\

 	} while (0)

 #define SCTP_ITERATOR_UNLOCK() \

 	(void)pthread_mutex_unlock(&sctp_it_ctl.it_mtx)

 #define SCTP_ITERATOR_LOCK_DESTROY() \

 	(void)pthread_mutex_destroy(&sctp_it_ctl.it_mtx)

 #define SCTP_IPI_ITERATOR_WQ_INIT() \

 	(void)pthread_mutex_init(&sctp_it_ctl.ipi_iterator_wq_mtx, NULL)

 #define SCTP_IPI_ITERATOR_WQ_DESTROY() \

 	(void)pthread_mutex_destroy(&sctp_it_ctl.ipi_iterator_wq_mtx)

 #define SCTP_IPI_ITERATOR_WQ_LOCK() \

 	do { \

 		(void)pthread_mutex_lock(&sctp_it_ctl.ipi_iterator_wq_mtx); \

 	} while (0)

 #define SCTP_IPI_ITERATOR_WQ_UNLOCK() \

 	(void)pthread_mutex_unlock(&sctp_it_ctl.ipi_iterator_wq_mtx)

 #endif

 #define SCTP_INCR_EP_COUNT() \

 	do { \

 		atomic_add_int(&SCTP_BASE_INFO(ipi_count_ep), 1); \

 	} while (0)

 #define SCTP_DECR_EP_COUNT() \

 	do { \

 	       atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_ep), 1); \

 	} while (0)

 #define SCTP_INCR_ASOC_COUNT() \

 	do { \

 	       atomic_add_int(&SCTP_BASE_INFO(ipi_count_asoc), 1); \

 	} while (0)

 #define SCTP_DECR_ASOC_COUNT() \

 	do { \

 	       atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_asoc), 1); \

 	} while (0)

 #define SCTP_INCR_LADDR_COUNT() \

 	do { \

 	       atomic_add_int(&SCTP_BASE_INFO(ipi_count_laddr), 1); \

 	} while (0)

 #define SCTP_DECR_LADDR_COUNT() \

 	do { \

 	       atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_laddr), 1); \

 	} while (0)

 #define SCTP_INCR_RADDR_COUNT() \

 	do { \

  	       atomic_add_int(&SCTP_BASE_INFO(ipi_count_raddr), 1); \

 	} while (0)

 #define SCTP_DECR_RADDR_COUNT() \

 	do { \

  	       atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_raddr), 1); \

 	} while (0)

 #define SCTP_INCR_CHK_COUNT() \

 	do { \

   	       atomic_add_int(&SCTP_BASE_INFO(ipi_count_chunk), 1); \

 	} while (0)

 #define SCTP_DECR_CHK_COUNT() \

 	do { \

   	       atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_chunk), 1); \

 	} while (0)

 #define SCTP_INCR_READQ_COUNT() \

 	do { \

 	       atomic_add_int(&SCTP_BASE_INFO(ipi_count_readq), 1); \

 	} while (0)

 #define SCTP_DECR_READQ_COUNT() \

 	do { \

 	       atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_readq), 1); \

 	} while (0)

 #define SCTP_INCR_STRMOQ_COUNT() \

 	do { \

 	       atomic_add_int(&SCTP_BASE_INFO(ipi_count_strmoq), 1); \

 	} while (0)

 #define SCTP_DECR_STRMOQ_COUNT() \

 	do { \

 	       atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_strmoq), 1); \

 	} while (0)

 #endif