nat: fixing cfg file parsing cli issues

[vpp.git] / src / plugins / nat / dslite / dslite_cli.c

diff --git a/src/plugins/nat/dslite/dslite_cli.c b/src/plugins/nat/dslite/dslite_cli.c
index 0537957..193cb3f 100644 (file)
--- a/src/plugins/nat/dslite/dslite_cli.c
+++ b/src/plugins/nat/dslite/dslite_cli.c
@@ -14,6 +14,8 @@
  */
 #include <nat/dslite/dslite.h>
 
+#define DSLITE_EXPECTED_ARGUMENT "expected required argument(s)"
+
 static clib_error_t *
 dslite_add_del_pool_addr_command_fn (vlib_main_t * vm,
                                     unformat_input_t * input,
@@ -29,7 +31,7 @@ dslite_add_del_pool_addr_command_fn (vlib_main_t * vm,
 
   /* Get a line of input. */
   if (!unformat_user (input, unformat_line_input, line_input))
-    return 0;
+    return clib_error_return (0, DSLITE_EXPECTED_ARGUMENT);
 
   while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
     {
@@ -115,7 +117,7 @@ dslite_set_aftr_tunnel_addr_command_fn (vlib_main_t * vm,
 
   /* Get a line of input. */
   if (!unformat_user (input, unformat_line_input, line_input))
-    return 0;
+    return clib_error_return (0, DSLITE_EXPECTED_ARGUMENT);
 
   while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
     {
@@ -166,7 +168,7 @@ dslite_set_b4_tunnel_addr_command_fn (vlib_main_t * vm,
 
   /* Get a line of input. */
   if (!unformat_user (input, unformat_line_input, line_input))
-    return 0;
+    return clib_error_return (0, DSLITE_EXPECTED_ARGUMENT);
 
   while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
     {