22 struct vring ring;  variable
76 	vring_init(&ring, ring_size, p, 0x1000);  in alloc_ring()
86 		ring.desc[i].next = i + 1;  in alloc_ring()
117 	desc = ring.desc;  in add_inbuf()
136 	ring.avail->ring[avail & (ring_size - 1)] =  in add_inbuf()
143 	ring.avail->ring[avail] = head;  in add_inbuf()
148 	ring.avail->idx = guest.avail_idx;  in add_inbuf()
160 	index = ring.used->ring[head].id;  in get_buf()
167 	if (ring.used->idx == guest.last_used_idx)  in get_buf()
176 	index = ring.used->ring[head].id;  in get_buf()
181 	*lenp = ring.desc[index].len;  in get_buf()
183 	*lenp = ring.used->ring[head].len;  in get_buf()
186 	*bufp = (void*)(unsigned long)ring.desc[index].addr;  in get_buf()
189 	ring.desc[index].next = guest.free_head;  in get_buf()
202 	unsigned index = ring.used->ring[head].id;  in used_empty()
206 	return ring.used->idx == last_used_idx;  in used_empty()
219 	vring_used_event(&ring) = guest.last_used_idx;  in enable_call()
233 	need = vring_need_event(vring_avail_event(&ring),  in kick_available()
252 	vring_avail_event(&ring) = host.used_idx;  in enable_kick()
262 	unsigned index = ring.avail->ring[head & (ring_size - 1)];  in avail_empty()
266 	return head == ring.avail->idx;  in avail_empty()
277 	head = ring.avail->ring[used_idx & (ring_size - 1)];  in use_buf()
284 	desc = &ring.desc[head & (ring_size - 1)];  in use_buf()
286 	if (used_idx == ring.avail->idx)  in use_buf()
296 	head = ring.avail->ring[used_idx];  in use_buf()
298 	desc = &ring.desc[head];  in use_buf()
308 	ring.used->ring[used_idx].id = head;  in use_buf()
309 	ring.used->ring[used_idx].len = desc->len - 1;  in use_buf()
314 	ring.used->idx = host.used_idx;  in use_buf()
326 	need = vring_need_event(vring_used_event(&ring),  in call_used()