Function setup_buffer_rings

examples/proxy.c:453–481

* Setup an input and output buffer ring. */

 * Setup an input and output buffer ring.
 */
static int setup_buffer_rings(struct io_uring *ring, struct conn *c)
{
	int ret;

	/* no locking needed on cur_bgid, parent serializes setup */
	c->in_br.bgid = cur_bgid++;
	c->out_br.bgid = cur_bgid++;
	c->out_br.br = NULL;

	ret = setup_recv_ring(ring, c);
	if (ret)
		return ret;
	if (is_sink)
		return 0;
	if (snd_zc) {
		ret = setup_send_zc(ring, c);
		if (ret)
			return ret;
	}
	if (send_ring) {
		ret = setup_send_ring(ring, c);
		if (ret) {
			free_buffer_ring(ring, &c->in_br);
			return ret;
		}
	}

	return 0;
}

struct bucket_stat {
	int nr_packets;