Function replenish_buffer

examples/proxy.c:905–913

* We're done with this buffer, add it back to our pool so the kernel is * free to use it again. */

 * free to use it again.
 */
static int replenish_buffer(struct conn_buf_ring *cbr, int bid, int offset)
{
	void *this_buf = cbr->buf + bid * buf_size;

	assert(bid < nr_bufs);

	io_uring_buf_ring_add(cbr->br, this_buf, buf_size, bid, br_mask, offset);
	return buf_size;
}

/*
 * Iterate buffers from '*bid' and with a total size of 'bytes' and add them