API: Add support for "defaults"

Add support in the API language for specifying a field default.
Add default support in Python binding.

define foo {
  u16 mtu [default = 1500];
};

This is client side only. I.e. if the mtu argument is not passed to the foo function,
the client language binding will set it default to 1500.

Change-Id: I5df43f3cd87cb300b40ca38e15dcab25b40e424a
Signed-off-by: Ole Troan <ot@cisco.com>

1 files changed, 7 insertions, 3 deletions

diff --git a/src/vpp-api/python/vpp_papi/vpp_stats.py b/src/vpp-api/python/vpp_papi/vpp_stats.py
index 76ccf1042f6..de72249ac6b 100644
--- a/src/vpp-api/python/vpp_papi/vpp_stats.py
+++ b/src/vpp-api/python/vpp_papi/vpp_stats.py
@@ -73,7 +73,8 @@ void stat_segment_disconnect (void);
 
 uint32_t *stat_segment_ls_r (uint8_t ** patterns, stat_client_main_t * sm);
 uint32_t *stat_segment_ls (uint8_t ** pattern);
-stat_segment_data_t *stat_segment_dump_r (uint32_t * stats, stat_client_main_t * sm);
+stat_segment_data_t *stat_segment_dump_r (uint32_t * stats,
+                                          stat_client_main_t * sm);
 stat_segment_data_t *stat_segment_dump (uint32_t * counter_vec);
 void stat_segment_data_free (stat_segment_data_t * res);
 
@@ -133,7 +134,9 @@ def error_vec_list(api, e):
     return vec
 
 def name_vec_list(api, e):
-    return [ffi.string(e[i]).decode('utf-8') for i in range(api.stat_segment_vec_len(e)) if e[i] != ffi.NULL]
+    return [ffi.string(e[i]).decode('utf-8') for i in
+            range(api.stat_segment_vec_len(e)) if e[i] != ffi.NULL]
+
 
 def stat_entry_to_python(api, e):
     # Scalar index
@@ -222,7 +225,8 @@ class VPPStats(object):
 
         if rv == ffi.NULL:
             raise VPPStatsIOError()
-        return [ffi.string(self.api.stat_segment_index_to_name_r(rv[i], self.client)).decode('utf-8')
+        return [ffi.string(self.api.stat_segment_index_to_name_r(
+            rv[i], self.client)).decode('utf-8')
                 for i in range(self.api.stat_segment_vec_len(rv))]
 
     def dump(self, counters):