FIB Interpose Source

[vpp.git] / src / vnet / dpo / dpo.c

diff --git a/src/vnet/dpo/dpo.c b/src/vnet/dpo/dpo.c
index 85f2c5d..19e3714 100644 (file)
--- a/src/vnet/dpo/dpo.c
+++ b/src/vnet/dpo/dpo.c
@@ -153,20 +153,22 @@ format_dpo_id (u8 * s, va_list * args)
 
     if (NULL != dpo_vfts[dpo->dpoi_type].dv_format)
     {
-        return (format(s, "%U",
-                       dpo_vfts[dpo->dpoi_type].dv_format,
-                       dpo->dpoi_index,
-                       indent));
+        s = format(s, "%U",
+                   dpo_vfts[dpo->dpoi_type].dv_format,
+                   dpo->dpoi_index,
+                   indent);
     }
-
-    switch (dpo->dpoi_type)
+    else
     {
-    case DPO_FIRST:
-       s = format(s, "unset");
-       break;
-    default:
-       s = format(s, "unknown");
-       break;
+        switch (dpo->dpoi_type)
+        {
+        case DPO_FIRST:
+            s = format(s, "unset");
+            break;
+        default:
+            s = format(s, "unknown");
+            break;
+        }
     }
     return (s);
 }
@@ -303,6 +305,18 @@ dpo_default_get_next_node (const dpo_id_t *dpo)
     return (node_indices);
 }
 
+/**
+ * A default variant of the make interpose function that just returns
+ * the original
+ */
+static void
+dpo_default_mk_interpose (const dpo_id_t *original,
+                          const dpo_id_t *parent,
+                          dpo_id_t *clone)
+{
+    dpo_copy(clone, original);
+}
+
 void
 dpo_register (dpo_type_t type,
              const dpo_vft_t *vft,
@@ -314,6 +328,10 @@ dpo_register (dpo_type_t type,
     {
         dpo_vfts[type].dv_get_next_node = dpo_default_get_next_node;
     }
+    if (NULL == dpo_vfts[type].dv_mk_interpose)
+    {
+        dpo_vfts[type].dv_mk_interpose = dpo_default_mk_interpose;
+    }
 
     vec_validate(dpo_nodes, type);
     dpo_nodes[type] = nodes;
@@ -330,6 +348,17 @@ dpo_register_new_type (const dpo_vft_t *vft,
     return (type);
 }
 
+void
+dpo_mk_interpose (const dpo_id_t *original,
+                  const dpo_id_t *parent,
+                  dpo_id_t *clone)
+{
+    if (!dpo_id_is_valid(original))
+       return;
+
+    dpo_vfts[original->dpoi_type].dv_mk_interpose(original, parent, clone);
+}
+
 void
 dpo_lock (dpo_id_t *dpo)
 {