X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fvnet%2Ffib%2Ffib_table.c;h=c37ac1dbd49145e0c798d1c59d1f2f483dae7a27;hb=de412ce51f6f9ca879a09e49594b907e9e99a7ed;hp=d0bc33639b982bdb11e6a314ab0069d10857a47a;hpb=25b049484fcf9161edb2c19250066b893c38c264;p=vpp.git

diff --git a/src/vnet/fib/fib_table.c b/src/vnet/fib/fib_table.c
index d0bc33639b9..c37ac1dbd49 100644
--- a/src/vnet/fib/fib_table.c
+++ b/src/vnet/fib/fib_table.c
@@ -197,10 +197,18 @@ fib_table_post_insert_actions (fib_table_t *fib_table,
 
         /*
          * inform the covering entry that a new more specific
-         * has been inserted beneath it
+         * has been inserted beneath it.
+         * If the prefix that has been inserted is a host route
+         * then it is not possible that it will be the cover for any
+         * other entry, so we can elide the walk. This is particularly
+         * beneficial since there are often many host entries sharing the
+         * same cover (i.e. ADJ or RR sourced entries).
          */
-	fib_entry_cover_change_notify(fib_entry_cover_index,
-				      fib_entry_index);
+        if (!fib_entry_is_host(fib_entry_index))
+        {
+            fib_entry_cover_change_notify(fib_entry_cover_index,
+                                          fib_entry_index);
+        }
     }
 }