.event_write = ltt_event_write,
.packet_avail_size = ltt_packet_avail_size,
.get_reader_wait_queue = ltt_get_reader_wait_queue,
.event_write = ltt_event_write,
.packet_avail_size = ltt_packet_avail_size,
.get_reader_wait_queue = ltt_get_reader_wait_queue,