BIER CLI show commands; no crash on non-existant objects (VPP-1303)

[vpp.git] / src / vnet / bier / bier_imp.c

diff --git a/src/vnet/bier/bier_imp.c b/src/vnet/bier/bier_imp.c
index bd934b7..0c87d17 100644 (file)
--- a/src/vnet/bier/bier_imp.c
+++ b/src/vnet/bier/bier_imp.c
@@ -275,8 +275,15 @@ show_bier_imp (vlib_main_t * vm,
     }
     else
     {
-        vlib_cli_output(vm, "%U", format_bier_imp, bii, 1,
-                        BIER_SHOW_DETAIL);
+        if (pool_is_free_index(bier_imp_pool, bii))
+        {
+            vlib_cli_output(vm, "No such BIER imposition: %d", bii);
+        }
+        else
+        {
+            vlib_cli_output(vm, "%U", format_bier_imp, bii, 1,
+                            BIER_SHOW_DETAIL);
+        }
     }
     return (NULL);
 }