41 struct guest {  struct
52 } guest;  argument
78 	guest.avail_idx = 0;  in alloc_ring()
79 	guest.kicked_avail_idx = -1;  in alloc_ring()
80 	guest.last_used_idx = 0;  in alloc_ring()
83 	guest.free_head = 0;  in alloc_ring()
89 	guest.num_free = ring_size;  in alloc_ring()
98 /* guest side */
107 	if (!guest.num_free)  in add_inbuf()
111 	head = (ring_size - 1) & (guest.avail_idx++);  in add_inbuf()
113 	head = guest.free_head;  in add_inbuf()
115 	guest.num_free--;  in add_inbuf()
127 	guest.free_head = desc[head].next;  in add_inbuf()
135 	avail = guest.avail_idx++;  in add_inbuf()
142 	avail = (ring_size - 1) & (guest.avail_idx++);  in add_inbuf()
148 	ring.avail->idx = guest.avail_idx;  in add_inbuf()
159 	head = (ring_size - 1) & guest.last_used_idx;  in get_buf()
161 	if ((index ^ guest.last_used_idx ^ 0x8000) & ~(ring_size - 1))  in get_buf()
167 	if (ring.used->idx == guest.last_used_idx)  in get_buf()
172 	head = (ring_size - 1) & guest.last_used_idx;  in get_buf()
175 	head = (ring_size - 1) & guest.last_used_idx;  in get_buf()
189 	ring.desc[index].next = guest.free_head;  in get_buf()
190 	guest.free_head = index;  in get_buf()
192 	guest.num_free++;  in get_buf()
193 	guest.last_used_idx++;  in get_buf()
199 	unsigned short last_used_idx = guest.last_used_idx;  in used_empty()
219 	vring_used_event(&ring) = guest.last_used_idx;  in enable_call()
234 				guest.avail_idx,  in kick_available()
235 				guest.kicked_avail_idx);  in kick_available()
237 	guest.kicked_avail_idx = guest.avail_idx;  in kick_available()