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diff --git a/framework/src/suricata/src/ippair-queue.h b/framework/src/suricata/src/ippair-queue.h
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+++ b/framework/src/suricata/src/ippair-queue.h
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+/* Copyright (C) 2007-2012 Open Information Security Foundation
+ *
+ * You can copy, redistribute or modify this Program under the terms of
+ * the GNU General Public License version 2 as published by the Free
+ * Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+/**
+ * \file
+ *
+ * \author Victor Julien <victor@inliniac.net>
+ */
+
+#ifndef __IPPAIR_QUEUE_H__
+#define __IPPAIR_QUEUE_H__
+
+#include "suricata-common.h"
+#include "ippair.h"
+
+/** Spinlocks or Mutex for the ippair queues. */
+//#define HQLOCK_SPIN
+#define HQLOCK_MUTEX
+
+#ifdef HQLOCK_SPIN
+    #ifdef HQLOCK_MUTEX
+        #error Cannot enable both HQLOCK_SPIN and HQLOCK_MUTEX
+    #endif
+#endif
+
+/* Define a queue for storing ippairs */
+typedef struct IPPairQueue_
+{
+    IPPair *top;
+    IPPair *bot;
+    uint32_t len;
+#ifdef DBG_PERF
+    uint32_t dbg_maxlen;
+#endif /* DBG_PERF */
+#ifdef HQLOCK_MUTEX
+    SCMutex m;
+#elif defined HQLOCK_SPIN
+    SCSpinlock s;
+#else
+    #error Enable HQLOCK_SPIN or HQLOCK_MUTEX
+#endif
+} IPPairQueue;
+
+#ifdef HQLOCK_SPIN
+    #define HQLOCK_INIT(q) SCSpinInit(&(q)->s, 0)
+    #define HQLOCK_DESTROY(q) SCSpinDestroy(&(q)->s)
+    #define HQLOCK_LOCK(q) SCSpinLock(&(q)->s)
+    #define HQLOCK_TRYLOCK(q) SCSpinTrylock(&(q)->s)
+    #define HQLOCK_UNLOCK(q) SCSpinUnlock(&(q)->s)
+#elif defined HQLOCK_MUTEX
+    #define HQLOCK_INIT(q) SCMutexInit(&(q)->m, NULL)
+    #define HQLOCK_DESTROY(q) SCMutexDestroy(&(q)->m)
+    #define HQLOCK_LOCK(q) SCMutexLock(&(q)->m)
+    #define HQLOCK_TRYLOCK(q) SCMutexTrylock(&(q)->m)
+    #define HQLOCK_UNLOCK(q) SCMutexUnlock(&(q)->m)
+#else
+    #error Enable HQLOCK_SPIN or HQLOCK_MUTEX
+#endif
+
+/* prototypes */
+IPPairQueue *IPPairQueueNew();
+IPPairQueue *IPPairQueueInit(IPPairQueue *);
+void IPPairQueueDestroy (IPPairQueue *);
+
+void IPPairEnqueue (IPPairQueue *, IPPair *);
+IPPair *IPPairDequeue (IPPairQueue *);
+uint32_t IPPairQueueLen(IPPairQueue *);
+
+#endif /* __IPPAIR_QUEUE_H__ */