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-rw-r--r--src/vnet/dpo/dpo.h25
1 files changed, 25 insertions, 0 deletions
diff --git a/src/vnet/dpo/dpo.h b/src/vnet/dpo/dpo.h
index 4d484786fba..21a2ae2a33d 100644
--- a/src/vnet/dpo/dpo.h
+++ b/src/vnet/dpo/dpo.h
@@ -446,4 +446,29 @@ extern void dpo_register(dpo_type_t type,
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