27  * Guest adds descriptors with unique index values and DESC_HW in flags.
59 struct guest {  struct
65 } guest;  argument
92 	guest.avail_idx = 0;  in alloc_ring()
93 	guest.kicked_avail_idx = -1;  in alloc_ring()
94 	guest.last_used_idx = 0;  in alloc_ring()
103 	guest.num_free = ring_size;  in alloc_ring()
111 /* guest side */
116 	if (!guest.num_free)  in add_inbuf()
119 	guest.num_free--;  in add_inbuf()
120 	head = (ring_size - 1) & (guest.avail_idx++);  in add_inbuf()
145 	unsigned head = (ring_size - 1) & guest.last_used_idx;  in get_buf()
159 	guest.num_free++;  in get_buf()
160 	guest.last_used_idx++;  in get_buf()
166 	unsigned head = (ring_size - 1) & guest.last_used_idx;  in used_empty()
180 	event->call_index = guest.last_used_idx;  in enable_call()
195 			   guest.avail_idx,  in kick_available()
196 			   guest.kicked_avail_idx);  in kick_available()
198 	guest.kicked_avail_idx = guest.avail_idx;  in kick_available()