1 files changed, 20 insertions, 0 deletions
diff --git a/src/shared/vlan-util.h b/src/shared/vlan-util.h
new file mode 100644
index 0000000..ebe4331
--- /dev/null
+++ b/src/shared/vlan-util.h
@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
+#pragma once
+
+#include <stdbool.h>
+#include <inttypes.h>
+
+#include "conf-parser.h"
+
+#define VLANID_MAX 4094
+#define VLANID_INVALID UINT16_MAX
+
+/* Note that we permit VLAN Id 0 here, as that is apparently OK by the Linux kernel */
+static inline bool vlanid_is_valid(uint16_t id) {
+        return id <= VLANID_MAX;
+}
+
+int parse_vlanid(const char *p, uint16_t *ret);
+
+CONFIG_PARSER_PROTOTYPE(config_parse_default_port_vlanid);
+CONFIG_PARSER_PROTOTYPE(config_parse_vlanid);