+import "vnet/ip/ip_types.api";
+
+/** \brief A GRE tunnel type
+*/
+enum gre_tunnel_type
+{
+ GRE_API_TUNNEL_TYPE_L3,
+ GRE_API_TUNNEL_TYPE_TEB,
+ GRE_API_TUNNEL_TYPE_ERSPAN,
+};
+
+/** \brief A GRE tunnel
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param tunnel_type - 0: L3, 1: TEB, 2: ERSPAN
+ @param instance - optional unique custom device instance, else ~0.
+ @param src - Source IP address
+ @param dst - Destination IP address, can be multicast
+ @param outer_fib_id - Encap FIB table ID
+ @param session_id - session for ERSPAN tunnel, range 0-1023
+ @param sw_if_index - ignored on create/delete, present in details.
+*/
+typedef gre_tunnel