ring_init
if (ring_init(&netoring, obuf, netobufsize) != 1) {
if (ring_init(&netiring, ibuf, netibufsize) != 1) {
ring_init (Ring *ring, unsigned char *buffer, int count);
if (ring_init(&ttyoring, ttyobuf, sizeof ttyobuf) != 1) {
if (ring_init(&ttyiring, ttyibuf, sizeof ttyibuf) != 1) {