108     struct usbif_urb_back_ring urb_ring;  member
317         res = RING_GET_RESPONSE(&usbif->urb_ring, usbif->urb_ring.rsp_prod_pvt);  in usbback_do_response()
323         usbif->urb_ring.rsp_prod_pvt++;  in usbback_do_response()
324         RING_PUSH_RESPONSES_AND_CHECK_NOTIFY(&usbif->urb_ring, notify);  in usbback_do_response()
636     struct usbif_urb_back_ring *urb_ring;  in usbback_bh()  local
650     urb_ring = &usbif->urb_ring;  in usbback_bh()
651     rc = urb_ring->req_cons;  in usbback_bh()
652     rp = urb_ring->sring->req_prod;  in usbback_bh()
655     if (RING_REQUEST_PROD_OVERFLOW(urb_ring, rp)) {  in usbback_bh()
656         rc = urb_ring->rsp_prod_pvt;  in usbback_bh()
665         if (RING_REQUEST_CONS_OVERFLOW(urb_ring, rc)) {  in usbback_bh()
670         RING_COPY_REQUEST(urb_ring, rc, &usbback_req->req);  in usbback_bh()
675         urb_ring->req_cons = ++rc;  in usbback_bh()
678     RING_FINAL_CHECK_FOR_REQUESTS(urb_ring, more_to_do);  in usbback_bh()
905     BACK_RING_INIT(&usbif->urb_ring, urb_sring, XEN_PAGE_SIZE);  in usbback_connect()