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gstreamer/ext/sctp/usrsctp/usrsctplib/netinet/sctp_process_lock.h
Tim-Philipp Müller f4538e24b6 sctp: import internal copy of usrsctp library 
There are problems with global shared state and no API stability
guarantees, and we can't rely on distros shipping the fixes we
need. Both firefox and Chrome bundle their own copies too.

Imported from https://github.com/sctplab/usrsctp,
commit 547d3b46c64876c0336b9eef297fda58dbe1adaf
Date: Thu Jul 23 21:49:32 2020 +0200

Fixes https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/issues/870

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1465>
2020-08-14 01:32:45 +01:00

677 lines
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/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* 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(_WIN32)
/* 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(_inp)
#define SCTP_INP_RLOCK_ASSERT(_inp)
#define SCTP_INP_WLOCK_ASSERT(_inp)
#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(_WIN32)
#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_WQ_ADDR_LOCK_ASSERT()
#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_INP_LOCK_DESTROY(_inp) \
DeleteCriticalSection(&(_inp)->inp_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, NULL, SCTP_LOG_LOCK_INP); \
EnterCriticalSection(&(_inp)->inp_mtx); \
} while (0)
#define SCTP_INP_WLOCK(_inp) do { \
if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LOCK_LOGGING_ENABLE) \
sctp_log_lock(_inp, NULL, SCTP_LOG_LOCK_INP); \
EnterCriticalSection(&(_inp)->inp_mtx); \
} while (0)
#else
#define SCTP_INP_RLOCK(_inp) \
EnterCriticalSection(&(_inp)->inp_mtx)
#define SCTP_INP_WLOCK(_inp) \
EnterCriticalSection(&(_inp)->inp_mtx)
#endif
#define SCTP_INP_RLOCK_ASSERT(_tcb)
#define SCTP_INP_WLOCK_ASSERT(_tcb)
#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) \
EnterCriticalSection(&(_tcb)->tcb_send_mtx)
#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)
#define SCTP_ASOC_CREATE_LOCK_INIT(_inp) \
InitializeCriticalSection(&(_inp)->inp_create_mtx)
#define SCTP_ASOC_CREATE_LOCK_DESTROY(_inp) \
DeleteCriticalSection(&(_inp)->inp_create_mtx)
#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, NULL, SCTP_LOG_LOCK_CREATE); \
EnterCriticalSection(&(_inp)->inp_create_mtx); \
} while (0)
#else
#define SCTP_ASOC_CREATE_LOCK(_inp) \
EnterCriticalSection(&(_inp)->inp_create_mtx)
#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) \
EnterCriticalSection(&(_tcb)->tcb_mtx)
#endif
#define SCTP_TCB_TRYLOCK(_tcb) ((TryEnterCriticalSection(&(_tcb)->tcb_mtx)))
#define SCTP_TCB_UNLOCK(_tcb) \
LeaveCriticalSection(&(_tcb)->tcb_mtx)
#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), &SCTP_BASE_VAR(mtx_attr))
#define SCTP_WQ_ADDR_DESTROY() \
(void)pthread_mutex_destroy(&SCTP_BASE_INFO(wq_addr_mtx))
#ifdef INVARIANTS
#define SCTP_WQ_ADDR_LOCK() \
KASSERT(pthread_mutex_lock(&SCTP_BASE_INFO(wq_addr_mtx)) == 0, ("%s: wq_addr_mtx already locked", __func__))
#define SCTP_WQ_ADDR_UNLOCK() \
KASSERT(pthread_mutex_unlock(&SCTP_BASE_INFO(wq_addr_mtx)) == 0, ("%s: wq_addr_mtx not locked", __func__))
#else
#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))
#endif
#define SCTP_WQ_ADDR_LOCK_ASSERT() \
KASSERT(pthread_mutex_trylock(&SCTP_BASE_INFO(wq_addr_mtx)) == EBUSY, ("%s: wq_addr_mtx not locked", __func__))
#define SCTP_INP_INFO_LOCK_INIT() \
(void)pthread_mutex_init(&SCTP_BASE_INFO(ipi_ep_mtx), &SCTP_BASE_VAR(mtx_attr))
#define SCTP_INP_INFO_LOCK_DESTROY() \
(void)pthread_mutex_destroy(&SCTP_BASE_INFO(ipi_ep_mtx))
#ifdef INVARIANTS
#define SCTP_INP_INFO_RLOCK() \
KASSERT(pthread_mutex_lock(&SCTP_BASE_INFO(ipi_ep_mtx)) == 0, ("%s: ipi_ep_mtx already locked", __func__))
#define SCTP_INP_INFO_WLOCK() \
KASSERT(pthread_mutex_lock(&SCTP_BASE_INFO(ipi_ep_mtx)) == 0, ("%s: ipi_ep_mtx already locked", __func__))
#define SCTP_INP_INFO_RUNLOCK() \
KASSERT(pthread_mutex_unlock(&SCTP_BASE_INFO(ipi_ep_mtx)) == 0, ("%s: ipi_ep_mtx not locked", __func__))
#define SCTP_INP_INFO_WUNLOCK() \
KASSERT(pthread_mutex_unlock(&SCTP_BASE_INFO(ipi_ep_mtx)) == 0, ("%s: ipi_ep_mtx not locked", __func__))
#else
#define SCTP_INP_INFO_RLOCK() \
(void)pthread_mutex_lock(&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))
#endif
#define SCTP_INP_INFO_TRYLOCK() \
(!(pthread_mutex_trylock(&SCTP_BASE_INFO(ipi_ep_mtx))))
#define SCTP_IP_PKTLOG_INIT() \
(void)pthread_mutex_init(&SCTP_BASE_INFO(ipi_pktlog_mtx), &SCTP_BASE_VAR(mtx_attr))
#define SCTP_IP_PKTLOG_DESTROY() \
(void)pthread_mutex_destroy(&SCTP_BASE_INFO(ipi_pktlog_mtx))
#ifdef INVARIANTS
#define SCTP_IP_PKTLOG_LOCK() \
KASSERT(pthread_mutex_lock(&SCTP_BASE_INFO(ipi_pktlog_mtx)) == 0, ("%s: ipi_pktlog_mtx already locked", __func__))
#define SCTP_IP_PKTLOG_UNLOCK() \
KASSERT(pthread_mutex_unlock(&SCTP_BASE_INFO(ipi_pktlog_mtx)) == 0, ("%s: ipi_pktlog_mtx not locked", __func__))
#else
#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))
#endif
/*
* 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, &SCTP_BASE_VAR(mtx_attr))
#define SCTP_INP_READ_DESTROY(_inp) \
(void)pthread_mutex_destroy(&(_inp)->inp_rdata_mtx)
#ifdef INVARIANTS
#define SCTP_INP_READ_LOCK(_inp) \
KASSERT(pthread_mutex_lock(&(_inp)->inp_rdata_mtx) == 0, ("%s: inp_rdata_mtx already locked", __func__))
#define SCTP_INP_READ_UNLOCK(_inp) \
KASSERT(pthread_mutex_unlock(&(_inp)->inp_rdata_mtx) == 0, ("%s: inp_rdata_mtx not locked", __func__))
#else
#define SCTP_INP_READ_LOCK(_inp) \
(void)pthread_mutex_lock(&(_inp)->inp_rdata_mtx)
#define SCTP_INP_READ_UNLOCK(_inp) \
(void)pthread_mutex_unlock(&(_inp)->inp_rdata_mtx)
#endif
#define SCTP_INP_LOCK_INIT(_inp) \
(void)pthread_mutex_init(&(_inp)->inp_mtx, &SCTP_BASE_VAR(mtx_attr))
#define SCTP_INP_LOCK_DESTROY(_inp) \
(void)pthread_mutex_destroy(&(_inp)->inp_mtx)
#ifdef INVARIANTS
#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, NULL, SCTP_LOG_LOCK_INP); \
KASSERT(pthread_mutex_lock(&(_inp)->inp_mtx) == 0, ("%s: inp_mtx already locked", __func__)) \
} while (0)
#define SCTP_INP_WLOCK(_inp) do { \
if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LOCK_LOGGING_ENABLE) \
sctp_log_lock(_inp, NULL, SCTP_LOG_LOCK_INP); \
KASSERT(pthread_mutex_lock(&(_inp)->inp_mtx) == 0, ("%s: inp_mtx already locked", __func__))
} while (0)
#else
#define SCTP_INP_RLOCK(_inp) \
KASSERT(pthread_mutex_lock(&(_inp)->inp_mtx) == 0, ("%s: inp_mtx already locked", __func__))
#define SCTP_INP_WLOCK(_inp) \
KASSERT(pthread_mutex_lock(&(_inp)->inp_mtx) == 0, ("%s: inp_mtx already locked", __func__))
#endif
#define SCTP_INP_RUNLOCK(_inp) \
KASSERT(pthread_mutex_unlock(&(_inp)->inp_mtx) == 0, ("%s: inp_mtx not locked", __func__))
#define SCTP_INP_WUNLOCK(_inp) \
KASSERT(pthread_mutex_unlock(&(_inp)->inp_mtx) == 0, ("%s: inp_mtx not locked", __func__))
#else
#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, NULL, SCTP_LOG_LOCK_INP); \
(void)pthread_mutex_lock(&(_inp)->inp_mtx); \
} while (0)
#define SCTP_INP_WLOCK(_inp) do { \
if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LOCK_LOGGING_ENABLE) \
sctp_log_lock(_inp, NULL, SCTP_LOG_LOCK_INP); \
(void)pthread_mutex_lock(&(_inp)->inp_mtx); \
} while (0)
#else
#define SCTP_INP_RLOCK(_inp) \
(void)pthread_mutex_lock(&(_inp)->inp_mtx)
#define SCTP_INP_WLOCK(_inp) \
(void)pthread_mutex_lock(&(_inp)->inp_mtx)
#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)
#endif
#define SCTP_INP_RLOCK_ASSERT(_inp) \
KASSERT(pthread_mutex_trylock(&(_inp)->inp_mtx) == EBUSY, ("%s: inp_mtx not locked", __func__))
#define SCTP_INP_WLOCK_ASSERT(_inp) \
KASSERT(pthread_mutex_trylock(&(_inp)->inp_mtx) == EBUSY, ("%s: inp_mtx not locked", __func__))
#define SCTP_INP_INCR_REF(_inp) atomic_add_int(&((_inp)->refcount), 1)
#define SCTP_INP_DECR_REF(_inp) atomic_add_int(&((_inp)->refcount), -1)
#define SCTP_TCB_SEND_LOCK_INIT(_tcb) \
(void)pthread_mutex_init(&(_tcb)->tcb_send_mtx, &SCTP_BASE_VAR(mtx_attr))
#define SCTP_TCB_SEND_LOCK_DESTROY(_tcb) \
(void)pthread_mutex_destroy(&(_tcb)->tcb_send_mtx)
#ifdef INVARIANTS
#define SCTP_TCB_SEND_LOCK(_tcb) \
KASSERT(pthread_mutex_lock(&(_tcb)->tcb_send_mtx) == 0, ("%s: tcb_send_mtx already locked", __func__))
#define SCTP_TCB_SEND_UNLOCK(_tcb) \
KASSERT(pthread_mutex_unlock(&(_tcb)->tcb_send_mtx) == 0, ("%s: tcb_send_mtx not locked", __func__))
#else
#define SCTP_TCB_SEND_LOCK(_tcb) \
(void)pthread_mutex_lock(&(_tcb)->tcb_send_mtx)
#define SCTP_TCB_SEND_UNLOCK(_tcb) \
(void)pthread_mutex_unlock(&(_tcb)->tcb_send_mtx)
#endif
#define SCTP_ASOC_CREATE_LOCK_INIT(_inp) \
(void)pthread_mutex_init(&(_inp)->inp_create_mtx, &SCTP_BASE_VAR(mtx_attr))
#define SCTP_ASOC_CREATE_LOCK_DESTROY(_inp) \
(void)pthread_mutex_destroy(&(_inp)->inp_create_mtx)
#ifdef INVARIANTS
#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, NULL, SCTP_LOG_LOCK_CREATE); \
KASSERT(pthread_mutex_lock(&(_inp)->inp_create_mtx) == 0, ("%s: inp_create_mtx already locked", __func__)) \
} while (0)
#else
#define SCTP_ASOC_CREATE_LOCK(_inp) \
KASSERT(pthread_mutex_lock(&(_inp)->inp_create_mtx) == 0, ("%s: inp_create_mtx already locked", __func__))
#endif
#define SCTP_ASOC_CREATE_UNLOCK(_inp) \
KASSERT(pthread_mutex_unlock(&(_inp)->inp_create_mtx) == 0, ("%s: inp_create_mtx not locked", __func__))
#else
#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, NULL, SCTP_LOG_LOCK_CREATE); \
(void)pthread_mutex_lock(&(_inp)->inp_create_mtx); \
} while (0)
#else
#define SCTP_ASOC_CREATE_LOCK(_inp) \
(void)pthread_mutex_lock(&(_inp)->inp_create_mtx)
#endif
#define SCTP_ASOC_CREATE_UNLOCK(_inp) \
(void)pthread_mutex_unlock(&(_inp)->inp_create_mtx)
#endif
/*
* 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, &SCTP_BASE_VAR(mtx_attr))
#define SCTP_TCB_LOCK_DESTROY(_tcb) \
(void)pthread_mutex_destroy(&(_tcb)->tcb_mtx)
#ifdef INVARIANTS
#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); \
KASSERT(pthread_mutex_lock(&(_tcb)->tcb_mtx) == 0, ("%s: tcb_mtx already locked", __func__)) \
} while (0)
#else
#define SCTP_TCB_LOCK(_tcb) \
KASSERT(pthread_mutex_lock(&(_tcb)->tcb_mtx) == 0, ("%s: tcb_mtx already locked", __func__))
#endif
#define SCTP_TCB_UNLOCK(_tcb) \
KASSERT(pthread_mutex_unlock(&(_tcb)->tcb_mtx) == 0, ("%s: tcb_mtx not locked", __func__))
#else
#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) \
(void)pthread_mutex_lock(&(_tcb)->tcb_mtx)
#endif
#define SCTP_TCB_UNLOCK(_tcb) (void)pthread_mutex_unlock(&(_tcb)->tcb_mtx)
#endif
#define SCTP_TCB_LOCK_ASSERT(_tcb) \
KASSERT(pthread_mutex_trylock(&(_tcb)->tcb_mtx) == EBUSY, ("%s: tcb_mtx not locked", __func__))
#define SCTP_TCB_TRYLOCK(_tcb) (!(pthread_mutex_trylock(&(_tcb)->tcb_mtx)))
#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(_WIN32)
#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__))
#ifdef INVARIANTS
#define SOCKBUF_LOCK(_so_buf) \
KASSERT(pthread_mutex_lock(SOCKBUF_MTX(_so_buf)) == 0, ("%s: sockbuf_mtx already locked", __func__))
#define SOCKBUF_UNLOCK(_so_buf) \
KASSERT(pthread_mutex_unlock(SOCKBUF_MTX(_so_buf)) == 0, ("%s: sockbuf_mtx not locked", __func__))
#else
#define SOCKBUF_LOCK(_so_buf) \
pthread_mutex_lock(SOCKBUF_MTX(_so_buf))
#define SOCKBUF_UNLOCK(_so_buf) \
pthread_mutex_unlock(SOCKBUF_MTX(_so_buf))
#endif
#define SOCK_LOCK(_so) \
SOCKBUF_LOCK(&(_so)->so_rcv)
#define SOCK_UNLOCK(_so) \
SOCKBUF_UNLOCK(&(_so)->so_rcv)
#endif
#define SCTP_STATLOG_INIT_LOCK()
#define SCTP_STATLOG_LOCK()
#define SCTP_STATLOG_UNLOCK()
#define SCTP_STATLOG_DESTROY()
#if defined(_WIN32)
/* 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() \
EnterCriticalSection(&SCTP_BASE_INFO(ipi_addr_mtx))
#define SCTP_IPI_ADDR_RUNLOCK() \
LeaveCriticalSection(&SCTP_BASE_INFO(ipi_addr_mtx))
#define SCTP_IPI_ADDR_WLOCK() \
EnterCriticalSection(&SCTP_BASE_INFO(ipi_addr_mtx))
#define SCTP_IPI_ADDR_WUNLOCK() \
LeaveCriticalSection(&SCTP_BASE_INFO(ipi_addr_mtx))
#define SCTP_IPI_ADDR_LOCK_ASSERT()
#define SCTP_IPI_ADDR_WLOCK_ASSERT()
/* iterator locks */
#define SCTP_ITERATOR_LOCK_INIT() \
InitializeCriticalSection(&sctp_it_ctl.it_mtx)
#define SCTP_ITERATOR_LOCK_DESTROY() \
DeleteCriticalSection(&sctp_it_ctl.it_mtx)
#define SCTP_ITERATOR_LOCK() \
EnterCriticalSection(&sctp_it_ctl.it_mtx)
#define SCTP_ITERATOR_UNLOCK() \
LeaveCriticalSection(&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() \
EnterCriticalSection(&sctp_it_ctl.ipi_iterator_wq_mtx)
#define SCTP_IPI_ITERATOR_WQ_UNLOCK() \
LeaveCriticalSection(&sctp_it_ctl.ipi_iterator_wq_mtx)
#else
/* address list locks */
#define SCTP_IPI_ADDR_INIT() \
(void)pthread_mutex_init(&SCTP_BASE_INFO(ipi_addr_mtx), &SCTP_BASE_VAR(mtx_attr))
#define SCTP_IPI_ADDR_DESTROY() \
(void)pthread_mutex_destroy(&SCTP_BASE_INFO(ipi_addr_mtx))
#ifdef INVARIANTS
#define SCTP_IPI_ADDR_RLOCK() \
KASSERT(pthread_mutex_lock(&SCTP_BASE_INFO(ipi_addr_mtx)) == 0, ("%s: ipi_addr_mtx already locked", __func__))
#define SCTP_IPI_ADDR_RUNLOCK() \
KASSERT(pthread_mutex_unlock(&SCTP_BASE_INFO(ipi_addr_mtx)) == 0, ("%s: ipi_addr_mtx not locked", __func__))
#define SCTP_IPI_ADDR_WLOCK() \
KASSERT(pthread_mutex_lock(&SCTP_BASE_INFO(ipi_addr_mtx)) == 0, ("%s: ipi_addr_mtx already locked", __func__))
#define SCTP_IPI_ADDR_WUNLOCK() \
KASSERT(pthread_mutex_unlock(&SCTP_BASE_INFO(ipi_addr_mtx)) == 0, ("%s: ipi_addr_mtx not locked", __func__))
#define SCTP_IPI_ADDR_LOCK_ASSERT() \
KASSERT(pthread_mutex_trylock(&SCTP_BASE_INFO(ipi_addr_mtx)) == EBUSY, ("%s: ipi_addr_mtx not locked", __func__))
#define SCTP_IPI_ADDR_WLOCK_ASSERT() \
KASSERT(pthread_mutex_trylock(&SCTP_BASE_INFO(ipi_addr_mtx)) == EBUSY, ("%s: ipi_addr_mtx not locked", __func__))
#else
#define SCTP_IPI_ADDR_RLOCK() \
(void)pthread_mutex_lock(&SCTP_BASE_INFO(ipi_addr_mtx))
#define SCTP_IPI_ADDR_RUNLOCK() \
(void)pthread_mutex_unlock(&SCTP_BASE_INFO(ipi_addr_mtx))
#define SCTP_IPI_ADDR_WLOCK() \
(void)pthread_mutex_lock(&SCTP_BASE_INFO(ipi_addr_mtx))
#define SCTP_IPI_ADDR_WUNLOCK() \
(void)pthread_mutex_unlock(&SCTP_BASE_INFO(ipi_addr_mtx))
#define SCTP_IPI_ADDR_LOCK_ASSERT()
#define SCTP_IPI_ADDR_WLOCK_ASSERT()
#endif
/* iterator locks */
#define SCTP_ITERATOR_LOCK_INIT() \
(void)pthread_mutex_init(&sctp_it_ctl.it_mtx, &SCTP_BASE_VAR(mtx_attr))
#define SCTP_ITERATOR_LOCK_DESTROY() \
(void)pthread_mutex_destroy(&sctp_it_ctl.it_mtx)
#ifdef INVARIANTS
#define SCTP_ITERATOR_LOCK() \
KASSERT(pthread_mutex_lock(&sctp_it_ctl.it_mtx) == 0, ("%s: it_mtx already locked", __func__))
#define SCTP_ITERATOR_UNLOCK() \
KASSERT(pthread_mutex_unlock(&sctp_it_ctl.it_mtx) == 0, ("%s: it_mtx not locked", __func__))
#else
#define SCTP_ITERATOR_LOCK() \
(void)pthread_mutex_lock(&sctp_it_ctl.it_mtx)
#define SCTP_ITERATOR_UNLOCK() \
(void)pthread_mutex_unlock(&sctp_it_ctl.it_mtx)
#endif
#define SCTP_IPI_ITERATOR_WQ_INIT() \
(void)pthread_mutex_init(&sctp_it_ctl.ipi_iterator_wq_mtx, &SCTP_BASE_VAR(mtx_attr))
#define SCTP_IPI_ITERATOR_WQ_DESTROY() \
(void)pthread_mutex_destroy(&sctp_it_ctl.ipi_iterator_wq_mtx)
#ifdef INVARIANTS
#define SCTP_IPI_ITERATOR_WQ_LOCK() \
KASSERT(pthread_mutex_lock(&sctp_it_ctl.ipi_iterator_wq_mtx) == 0, ("%s: ipi_iterator_wq_mtx already locked", __func__))
#define SCTP_IPI_ITERATOR_WQ_UNLOCK() \
KASSERT(pthread_mutex_unlock(&sctp_it_ctl.ipi_iterator_wq_mtx) == 0, ("%s: ipi_iterator_wq_mtx not locked", __func__))
#else
#define SCTP_IPI_ITERATOR_WQ_LOCK() \
(void)pthread_mutex_lock(&sctp_it_ctl.ipi_iterator_wq_mtx)
#define SCTP_IPI_ITERATOR_WQ_UNLOCK() \
(void)pthread_mutex_unlock(&sctp_it_ctl.ipi_iterator_wq_mtx)
#endif
#endif
#define SCTP_INCR_EP_COUNT() \
atomic_add_int(&SCTP_BASE_INFO(ipi_count_ep), 1)
#define SCTP_DECR_EP_COUNT() \
atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_ep), 1)
#define SCTP_INCR_ASOC_COUNT() \
atomic_add_int(&SCTP_BASE_INFO(ipi_count_asoc), 1)
#define SCTP_DECR_ASOC_COUNT() \
atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_asoc), 1)
#define SCTP_INCR_LADDR_COUNT() \
atomic_add_int(&SCTP_BASE_INFO(ipi_count_laddr), 1)
#define SCTP_DECR_LADDR_COUNT() \
atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_laddr), 1)
#define SCTP_INCR_RADDR_COUNT() \
atomic_add_int(&SCTP_BASE_INFO(ipi_count_raddr), 1)
#define SCTP_DECR_RADDR_COUNT() \
atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_raddr), 1)
#define SCTP_INCR_CHK_COUNT() \
atomic_add_int(&SCTP_BASE_INFO(ipi_count_chunk), 1)
#define SCTP_DECR_CHK_COUNT() \
atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_chunk), 1)
#define SCTP_INCR_READQ_COUNT() \
atomic_add_int(&SCTP_BASE_INFO(ipi_count_readq), 1)
#define SCTP_DECR_READQ_COUNT() \
atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_readq), 1)
#define SCTP_INCR_STRMOQ_COUNT() \
atomic_add_int(&SCTP_BASE_INFO(ipi_count_strmoq), 1)
#define SCTP_DECR_STRMOQ_COUNT() \
atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_strmoq), 1)
#endif
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