+/**
+ * A description of the type of path extension
+ */
+typedef enum fib_path_ext_type_t_
+{
+ /**
+ * An MPLS extension that maintains the path's outgoing labels,
+ */
+ FIB_PATH_EXT_MPLS,
+ /**
+ * A adj-source extension indicating the path's refinement criteria
+ * result
+ */
+ FIB_PATH_EXT_ADJ,
+} fib_path_ext_type_t;
+
+/**
+ * Flags present on an ADJ sourced path-extension
+ */
+typedef enum fib_path_ext_adj_attr_t_
+{
+ FIB_PATH_EXT_ADJ_ATTR_REFINES_COVER,
+} fib_path_ext_adj_attr_t;
+
+typedef enum fib_path_ext_adj_flags_t_
+{
+ FIB_PATH_EXT_ADJ_FLAG_NONE = 0,
+ FIB_PATH_EXT_ADJ_FLAG_REFINES_COVER = (1 << FIB_PATH_EXT_ADJ_ATTR_REFINES_COVER),
+} fib_path_ext_adj_flags_t;
+
+#define FIB_PATH_EXT_ADJ_ATTR_NAMES { \
+ [FIB_PATH_EXT_ADJ_ATTR_REFINES_COVER] = "refines-cover", \
+}
+
+#define FOR_EACH_PATH_EXT_ADJ_ATTR(_item) \
+ for (_item = FIB_PATH_EXT_ADJ_ATTR_REFINES_COVER; \
+ _item <= FIB_PATH_EXT_ADJ_ATTR_REFINES_COVER; \
+ _item++)
+
+/**
+ * Flags present on an MPLS label sourced path-extension
+ */
+typedef enum fib_path_ext_mpls_attr_t_
+{
+ /**
+ * Do not decrement the TTL of IP packet during imposition
+ */
+ FIB_PATH_EXT_MPLS_ATTR_NO_IP_TTL_DECR,
+} fib_path_ext_mpls_attr_t;
+
+typedef enum fib_path_ext_mpls_flags_t_
+{
+ FIB_PATH_EXT_MPLS_FLAG_NONE = 0,
+ FIB_PATH_EXT_MPLS_FLAG_NO_IP_TTL_DECR = (1 << FIB_PATH_EXT_MPLS_ATTR_NO_IP_TTL_DECR),
+} fib_path_ext_mpls_flags_t;
+
+#define FIB_PATH_EXT_MPLS_ATTR_NAMES { \
+ [FIB_PATH_EXT_MPLS_ATTR_NO_IP_TTL_DECR] = "no-ip-tll-decr", \
+}
+
+#define FOR_EACH_PATH_EXT_MPLS_ATTR(_item) \
+ for (_item = FIB_PATH_EXT_MPLS_ATTR_NO_IP_TTL_DECR; \
+ _item <= FIB_PATH_EXT_MPLS_ATTR_NO_IP_TTL_DECR; \
+ _item++)
+