DEFINE_RING_TYPES   88 include/xen/interface/io/blkif.h DEFINE_RING_TYPES(blkif, struct blkif_request, struct blkif_response);
DEFINE_RING_TYPES  145 include/xen/interface/io/netif.h DEFINE_RING_TYPES(xen_netif_tx,
DEFINE_RING_TYPES  148 include/xen/interface/io/netif.h DEFINE_RING_TYPES(xen_netif_rx,