Fix panic for Retval fields with uint kinds

[govpp.git] / core / channel.go

diff --git a/core/channel.go b/core/channel.go
index 1b5e77e..28d0710 100644 (file)
--- a/core/channel.go
+++ b/core/channel.go
@@ -350,7 +350,15 @@ func (ch *Channel) processReply(reply *vppReply, expSeqNum uint16, msg api.Messa
        if strings.HasSuffix(msg.GetMessageName(), "_reply") {
                // TODO: use categories for messages to avoid checking message name
                if f := reflect.Indirect(reflect.ValueOf(msg)).FieldByName("Retval"); f.IsValid() {
-                       retval := int32(f.Int())
+                       var retval int32
+                       switch f.Kind() {
+                       case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+                               retval = int32(f.Int())
+                       case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+                               retval = int32(f.Uint())
+                       default:
+                               logrus.Warnf("invalid kind (%v) for Retval field of message %v", f.Kind(), msg.GetMessageName())
+                       }
                        err = api.RetvalToVPPApiError(retval)
                }
        }