+/**
+ * Bus type key in global devargs syntax.
+ *
+ * Legacy devargs parser doesn't use this key as bus type
+ * is resolved as first optional value separated by ":".
+ */
+#define RTE_DEVARGS_KEY_BUS "bus"
+
+/**
+ * Class type key in global devargs syntax.
+ *
+ * Legacy devargs parser doesn't parse class type. PMD driver is
+ * encouraged to use this key to resolve class type.
+ */
+#define RTE_DEVARGS_KEY_CLASS "class"
+
+/**
+ * Driver type key in global devargs syntax.
+ *
+ * Legacy devargs parser doesn't parse driver type. PMD driver is
+ * encouraged to use this key to resolve driver type.
+ */
+#define RTE_DEVARGS_KEY_DRIVER "driver"
+