*/
extern void dpo_unlock(dpo_id_t *dpo);
+/**
+ * @brief
+ * Make an interpose DPO from an original
+ */
+extern void dpo_mk_interpose(const dpo_id_t *original,
+ const dpo_id_t *parent,
+ dpo_id_t *clone);
+
/**
* @brief Set/create a DPO ID
* The DPO will be locked.
*/
typedef u32 (*dpo_get_urpf_t)(const dpo_id_t *dpo);
+/**
+ * @brief Called during FIB interposition when the originally
+ * registered DPO is used to 'clone' an instance for interposition
+ * at a particular location in the FIB graph.
+ * The parent is the next DPO in the chain that the clone will
+ * be used instead of. The clone may then choose to stack itself
+ * on the parent.
+ */
+typedef void (*dpo_mk_interpose_t)(const dpo_id_t *original,
+ const dpo_id_t *parent,
+ dpo_id_t *clone);
+
/**
* @brief A virtual function table regisitered for a DPO type
*/
* Get uRPF interface
*/
dpo_get_urpf_t dv_get_urpf;
+ /**
+ * Signal on an interposed child that the parent has changed
+ */
+ dpo_mk_interpose_t dv_mk_interpose;
} dpo_vft_t;
extern dpo_type_t dpo_register_new_type(const dpo_vft_t *vft,
const char * const * const * nodes);
+/**
+ * @brief Return already stacked up next node index for a given
+ * child_type/child_proto and parent_type/patent_proto.
+ * The VLIB graph arc used is taken from the parent and child types
+ * passed.
+ *
+ * @param child_type
+ * Child DPO type.
+ *
+ * @param child_proto
+ * Child DPO proto
+ *
+ * @param parent_type
+ * Parent DPO type.
+ *
+ * @param parent_proto
+ * Parent DPO proto
+ *
+ * @return The VLIB Graph node index
+ */
+extern u32
+dpo_get_next_node_by_type_and_proto (dpo_type_t child_type,
+ dpo_proto_t child_proto,
+ dpo_type_t parent_type,
+ dpo_proto_t parent_proto);
#endif