fib: API to extract any resolving interface rather than the one from the

best source

Type: improvement

Signed-off-by: Neale Ranns <neale.ranns@cisco.com>
Change-Id: Iaa91cbc7eba94f4ffbdc249ecdb49770bd2ae916

2 files changed, 22 insertions, 0 deletions

diff --git a/src/vnet/fib/fib_entry.c b/src/vnet/fib/fib_entry.c
index a8dec1a8c20..33c29a6e33c 100644
--- a/src/vnet/fib/fib_entry.c
+++ b/src/vnet/fib/fib_entry.c
@@ -1464,6 +1464,27 @@ fib_entry_get_resolving_interface (fib_node_index_t entry_index)
     return (fib_path_list_get_resolving_interface(fib_entry->fe_parent));
 }
 
+u32
+fib_entry_get_any_resolving_interface (fib_node_index_t entry_index)
+{
+    const fib_entry_src_t *src;
+    fib_entry_t *fib_entry;
+    fib_source_t source;
+    u32 sw_if_index;
+
+    fib_entry = fib_entry_get(entry_index);
+
+    FOR_EACH_SRC_ADDED(fib_entry, src, source,
+    ({
+        sw_if_index = fib_entry_get_resolving_interface_for_source (entry_index,
+                                                                    source);
+
+        if (~0 != sw_if_index)
+            break;
+    }));
+    return (sw_if_index);
+}
+
 fib_source_t
 fib_entry_get_best_source (fib_node_index_t entry_index)
 {
diff --git a/src/vnet/fib/fib_entry.h b/src/vnet/fib/fib_entry.h
index b97c80fd8bf..4053ff65181 100644
--- a/src/vnet/fib/fib_entry.h
+++ b/src/vnet/fib/fib_entry.h
@@ -440,6 +440,7 @@ extern u32 fib_entry_child_add(fib_node_index_t fib_entry_index,
 extern void fib_entry_child_remove(fib_node_index_t fib_entry_index,
 				   u32 sibling_index);
 extern u32 fib_entry_get_resolving_interface(fib_node_index_t fib_entry_index);
+extern u32 fib_entry_get_any_resolving_interface(fib_node_index_t fib_entry_index);
 extern u32 fib_entry_get_resolving_interface_for_source(
     fib_node_index_t fib_entry_index,
     fib_source_t source);