1 files changed, 98 insertions, 0 deletions
diff --git a/src/flow-queue.h b/src/flow-queue.h
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--- /dev/null
+++ b/src/flow-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 __FLOW_QUEUE_H__
+#define __FLOW_QUEUE_H__
+
+#include "suricata-common.h"
+#include "flow.h"
+
+/** Spinlocks or Mutex for the flow queues. */
+//#define FQLOCK_SPIN
+#define FQLOCK_MUTEX
+
+#ifdef FQLOCK_SPIN
+    #ifdef FQLOCK_MUTEX
+        #error Cannot enable both FQLOCK_SPIN and FQLOCK_MUTEX
+    #endif
+#endif
+
+typedef struct FlowQueuePrivate_
+{
+    Flow *top;
+    Flow *bot;
+    uint32_t len;
+} FlowQueuePrivate;
+
+/* Define a queue for storing flows */
+typedef struct FlowQueue_
+{
+    FlowQueuePrivate priv;
+    SC_ATOMIC_DECLARE(bool,non_empty);
+#ifdef FQLOCK_MUTEX
+    SCMutex m;
+#elif defined FQLOCK_SPIN
+    SCSpinlock s;
+#else
+    #error Enable FQLOCK_SPIN or FQLOCK_MUTEX
+#endif
+} FlowQueue;
+#define qtop priv.top
+#define qbot priv.bot
+#define qlen priv.len
+
+#ifdef FQLOCK_SPIN
+    #define FQLOCK_INIT(q) SCSpinInit(&(q)->s, 0)
+    #define FQLOCK_DESTROY(q) SCSpinDestroy(&(q)->s)
+    #define FQLOCK_LOCK(q) SCSpinLock(&(q)->s)
+    #define FQLOCK_TRYLOCK(q) SCSpinTrylock(&(q)->s)
+    #define FQLOCK_UNLOCK(q) SCSpinUnlock(&(q)->s)
+#elif defined FQLOCK_MUTEX
+    #define FQLOCK_INIT(q) SCMutexInit(&(q)->m, NULL)
+    #define FQLOCK_DESTROY(q) SCMutexDestroy(&(q)->m)
+    #define FQLOCK_LOCK(q) SCMutexLock(&(q)->m)
+    #define FQLOCK_TRYLOCK(q) SCMutexTrylock(&(q)->m)
+    #define FQLOCK_UNLOCK(q) SCMutexUnlock(&(q)->m)
+#else
+    #error Enable FQLOCK_SPIN or FQLOCK_MUTEX
+#endif
+
+/* prototypes */
+FlowQueue *FlowQueueNew(void);
+FlowQueue *FlowQueueInit(FlowQueue *);
+void FlowQueueDestroy (FlowQueue *);
+
+void FlowEnqueue (FlowQueue *, Flow *);
+Flow *FlowDequeue (FlowQueue *);
+void FlowQueueRemove(FlowQueue *fq, Flow *f);
+
+void FlowQueuePrivateAppendFlow(FlowQueuePrivate *fqc, Flow *f);
+void FlowQueuePrivatePrependFlow(FlowQueuePrivate *fqc, Flow *f);
+
+void FlowQueueAppendPrivate(FlowQueue *fq, FlowQueuePrivate *fqp);
+void FlowQueuePrivateAppendPrivate(FlowQueuePrivate *dest, FlowQueuePrivate *src);
+FlowQueuePrivate FlowQueueExtractPrivate(FlowQueue *fq);
+Flow *FlowQueuePrivateGetFromTop(FlowQueuePrivate *fqp);
+
+#endif /* __FLOW_QUEUE_H__ */
+