suricata checkin based on commit id a4bce14770beee46a537eda3c3f6e8e8565d5d0a

Change-Id: I9a214fa0ee95e58fc640e50bd604dac7f42db48f

1 files changed, 168 insertions, 0 deletions

diff --git a/framework/src/suricata/src/flow-queue.c b/framework/src/suricata/src/flow-queue.c
new file mode 100644
index 00000000..b6a1138d
--- /dev/null
+++ b/framework/src/suricata/src/flow-queue.c
@@ -0,0 +1,168 @@
+/* Copyright (C) 2007-2013 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>
+ *
+ * Flow queue handler functions
+ */
+
+#include "suricata-common.h"
+#include "threads.h"
+#include "debug.h"
+#include "flow-private.h"
+#include "flow-queue.h"
+#include "flow-util.h"
+#include "util-error.h"
+#include "util-debug.h"
+#include "util-print.h"
+
+FlowQueue *FlowQueueNew()
+{
+    FlowQueue *q = (FlowQueue *)SCMalloc(sizeof(FlowQueue));
+    if (q == NULL) {
+        SCLogError(SC_ERR_FATAL, "Fatal error encountered in FlowQueueNew. Exiting...");
+        exit(EXIT_SUCCESS);
+    }
+    q = FlowQueueInit(q);
+    return q;
+}
+
+FlowQueue *FlowQueueInit (FlowQueue *q)
+{
+    if (q != NULL) {
+        memset(q, 0, sizeof(FlowQueue));
+        FQLOCK_INIT(q);
+    }
+    return q;
+}
+
+/**
+ *  \brief Destroy a flow queue
+ *
+ *  \param q the flow queue to destroy
+ */
+void FlowQueueDestroy (FlowQueue *q)
+{
+    FQLOCK_DESTROY(q);
+}
+
+/**
+ *  \brief add a flow to a queue
+ *
+ *  \param q queue
+ *  \param f flow
+ */
+void FlowEnqueue (FlowQueue *q, Flow *f)
+{
+#ifdef DEBUG
+    BUG_ON(q == NULL || f == NULL);
+#endif
+
+    FQLOCK_LOCK(q);
+
+    /* more flows in queue */
+    if (q->top != NULL) {
+        f->lnext = q->top;
+        q->top->lprev = f;
+        q->top = f;
+    /* only flow */
+    } else {
+        q->top = f;
+        q->bot = f;
+    }
+    q->len++;
+#ifdef DBG_PERF
+    if (q->len > q->dbg_maxlen)
+        q->dbg_maxlen = q->len;
+#endif /* DBG_PERF */
+    FQLOCK_UNLOCK(q);
+}
+
+/**
+ *  \brief remove a flow from the queue
+ *
+ *  \param q queue
+ *
+ *  \retval f flow or NULL if empty list.
+ */
+Flow *FlowDequeue (FlowQueue *q)
+{
+    FQLOCK_LOCK(q);
+
+    Flow *f = q->bot;
+    if (f == NULL) {
+        FQLOCK_UNLOCK(q);
+        return NULL;
+    }
+
+    /* more packets in queue */
+    if (q->bot->lprev != NULL) {
+        q->bot = q->bot->lprev;
+        q->bot->lnext = NULL;
+    /* just the one we remove, so now empty */
+    } else {
+        q->top = NULL;
+        q->bot = NULL;
+    }
+
+#ifdef DEBUG
+    BUG_ON(q->len == 0);
+#endif
+    if (q->len > 0)
+        q->len--;
+
+    f->lnext = NULL;
+    f->lprev = NULL;
+
+    FQLOCK_UNLOCK(q);
+    return f;
+}
+
+/**
+ *  \brief Transfer a flow from a queue to the spare queue
+ *
+ *  \param f the flow to be transfered
+ *  \param q the source queue, where the flow will be removed. This queue is locked.
+ *
+ *  \note spare queue needs locking
+ */
+void FlowMoveToSpare(Flow *f)
+{
+    /* now put it in spare */
+    FQLOCK_LOCK(&flow_spare_q);
+
+    /* add to new queue (append) */
+    f->lprev = flow_spare_q.bot;
+    if (f->lprev != NULL)
+        f->lprev->lnext = f;
+    f->lnext = NULL;
+    flow_spare_q.bot = f;
+    if (flow_spare_q.top == NULL)
+        flow_spare_q.top = f;
+
+    flow_spare_q.len++;
+#ifdef DBG_PERF
+    if (flow_spare_q.len > flow_spare_q.dbg_maxlen)
+        flow_spare_q.dbg_maxlen = flow_spare_q.len;
+#endif /* DBG_PERF */
+
+    FQLOCK_UNLOCK(&flow_spare_q);
+}
+