86 		ring.desc[i].next = i + 1;  in alloc_ring()
105 	struct vring_desc *desc;  in add_inbuf()  local
117 	desc = ring.desc;  in add_inbuf()
118 	desc[head].flags = VRING_DESC_F_NEXT;  in add_inbuf()
119 	desc[head].addr = (unsigned long)(void *)buf;  in add_inbuf()
120 	desc[head].len = len;  in add_inbuf()
125 	desc[head].flags &= ~VRING_DESC_F_NEXT;  in add_inbuf()
127 	guest.free_head = desc[head].next;  in add_inbuf()
181 	*lenp = ring.desc[index].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()
273 	struct vring_desc *desc;  in use_buf()  local
284 	desc = &ring.desc[head & (ring_size - 1)];  in use_buf()
298 	desc = &ring.desc[head];  in use_buf()
301 	*lenp = desc->len;  in use_buf()
302 	*bufp = (void *)(unsigned long)desc->addr;  in use_buf()
305 	desc->len = desc->len - 1;  in use_buf()
309 	ring.used->ring[used_idx].len = desc->len - 1;  in use_buf()