q = session_manager_get_vpp_event_queue (s->thread_index);
unix_shared_memory_queue_add (q, (u8 *) & evt,
0 /* do wait for mutex */ );
q = session_manager_get_vpp_event_queue (s->thread_index);
unix_shared_memory_queue_add (q, (u8 *) & evt,
0 /* do wait for mutex */ );