1 files changed, 44 insertions, 0 deletions
diff --git a/src/util-datalink.c b/src/util-datalink.c
new file mode 100644
index 0000000..ad34a2b
--- /dev/null
+++ b/src/util-datalink.c
@@ -0,0 +1,44 @@
+/* Copyright (C) 2021 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.
+ */
+
+#include "suricata-common.h"
+#include "util-datalink.h"
+#include "decode.h"
+
+int g_datalink_value = LINKTYPE_NULL;
+int g_datalink_is_multiple = 0;
+
+void DatalinkSetGlobalType(int datalink)
+{
+    if (g_datalink_value != LINKTYPE_NULL) {
+        if (datalink != g_datalink_value) {
+            g_datalink_is_multiple = 1;
+        }
+    } else {
+        g_datalink_value = datalink;
+    }
+}
+
+inline int DatalinkGetGlobalType(void)
+{
+    return g_datalink_value;
+}
+
+bool DatalinkHasMultipleValues(void)
+{
+    return g_datalink_is_multiple == 1;
+}