int vlib_plugin_early_init (vlib_main_t * vm);
int vlib_load_new_plugins (plugin_main_t * pm, int from_early_init);
void *vlib_get_plugin_symbol (char *plugin_name, char *symbol_name);
int vlib_plugin_early_init (vlib_main_t * vm);
int vlib_load_new_plugins (plugin_main_t * pm, int from_early_init);
void *vlib_get_plugin_symbol (char *plugin_name, char *symbol_name);