suricata
defrag-queue.h
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/* Copyright (C) 2007-2012 Open Information Security Foundation
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*
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* You can copy, redistribute or modify this Program under the terms of
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* the GNU General Public License version 2 as published by the Free
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* Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* version 2 along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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/**
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* \file
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*
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* \author Victor Julien <victor@inliniac.net>
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*/
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#ifndef __DEFRAG_QUEUE_H__
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#define __DEFRAG_QUEUE_H__
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#include "
suricata-common.h
"
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#include "
defrag.h
"
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/** Spinlocks or Mutex for the defrag tracker queues. */
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//#define DQLOCK_SPIN
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#define DQLOCK_MUTEX
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#ifdef DQLOCK_SPIN
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#ifdef DQLOCK_MUTEX
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#error Cannot enable both DQLOCK_SPIN and DQLOCK_MUTEX
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#endif
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#endif
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/* Define a queue for storing defrag trackers */
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typedef
struct
DefragTrackerQueue_
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{
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DefragTracker
*
top
;
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DefragTracker
*
bot
;
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uint32_t
len
;
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#ifdef DBG_PERF
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uint32_t dbg_maxlen;
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#endif
/* DBG_PERF */
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#ifdef DQLOCK_MUTEX
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SCMutex
m
;
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#elif defined DQLOCK_SPIN
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SCSpinlock
s;
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#else
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#error Enable DQLOCK_SPIN or DQLOCK_MUTEX
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#endif
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}
DefragTrackerQueue
;
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#ifdef DQLOCK_SPIN
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#define DQLOCK_INIT(q) SCSpinInit(&(q)->s, 0)
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#define DQLOCK_DESTROY(q) SCSpinDestroy(&(q)->s)
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#define DQLOCK_LOCK(q) SCSpinLock(&(q)->s)
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#define DQLOCK_TRYLOCK(q) SCSpinTrylock(&(q)->s)
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#define DQLOCK_UNLOCK(q) SCSpinUnlock(&(q)->s)
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#elif defined DQLOCK_MUTEX
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#define DQLOCK_INIT(q) SCMutexInit(&(q)->m, NULL)
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#define DQLOCK_DESTROY(q) SCMutexDestroy(&(q)->m)
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#define DQLOCK_LOCK(q) SCMutexLock(&(q)->m)
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#define DQLOCK_TRYLOCK(q) SCMutexTrylock(&(q)->m)
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#define DQLOCK_UNLOCK(q) SCMutexUnlock(&(q)->m)
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#else
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#error Enable DQLOCK_SPIN or DQLOCK_MUTEX
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#endif
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/* prototypes */
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DefragTrackerQueue
*
DefragTrackerQueueNew
(
void
);
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DefragTrackerQueue
*
DefragTrackerQueueInit
(
DefragTrackerQueue
*);
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void
DefragTrackerQueueDestroy
(
DefragTrackerQueue
*);
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void
DefragTrackerEnqueue
(
DefragTrackerQueue
*,
DefragTracker
*);
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DefragTracker
*
DefragTrackerDequeue
(
DefragTrackerQueue
*);
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uint32_t
DefragTrackerQueueLen
(
DefragTrackerQueue
*);
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#endif
/* __DEFRAG_QUEUE_H__ */
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DefragTrackerEnqueue
void DefragTrackerEnqueue(DefragTrackerQueue *, DefragTracker *)
add a tracker to a queue
Definition:
defrag-queue.c:68
DefragTrackerQueueNew
DefragTrackerQueue * DefragTrackerQueueNew(void)
Definition:
defrag-queue.c:41
DefragTrackerQueueLen
uint32_t DefragTrackerQueueLen(DefragTrackerQueue *)
Definition:
defrag-queue.c:134
DefragTrackerQueue_::bot
DefragTracker * bot
Definition:
defrag-queue.h:44
DefragTracker_
Definition:
defrag.h:86
DefragTrackerQueue
struct DefragTrackerQueue_ DefragTrackerQueue
DefragTrackerQueue_
Definition:
defrag-queue.h:42
defrag.h
DefragTrackerQueue_::len
uint32_t len
Definition:
defrag-queue.h:45
suricata-common.h
DefragTrackerDequeue
DefragTracker * DefragTrackerDequeue(DefragTrackerQueue *)
remove a tracker from the queue
Definition:
defrag-queue.c:101
SCSpinlock
#define SCSpinlock
Definition:
threads-debug.h:234
DefragTrackerQueue_::top
DefragTracker * top
Definition:
defrag-queue.h:43
SCMutex
#define SCMutex
Definition:
threads-debug.h:114
DefragTrackerQueueInit
DefragTrackerQueue * DefragTrackerQueueInit(DefragTrackerQueue *)
Definition:
defrag-queue.c:32
DefragTrackerQueue_::m
SCMutex m
Definition:
defrag-queue.h:50
DefragTrackerQueueDestroy
void DefragTrackerQueueDestroy(DefragTrackerQueue *)
Destroy a tracker queue.
Definition:
defrag-queue.c:57
src
defrag-queue.h
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