85 	struct vio_dring_state *dr;  in flush_rx_dring()  local
90 	dr = &vio->drings[VIO_DRIVER_RX_RING];  in flush_rx_dring()
91 	ident = dr->ident;  in flush_rx_dring()
97 	memset(dr, 0, sizeof(*dr));  in flush_rx_dring()
98 	dr->ident = ident;  in flush_rx_dring()
137 	struct vio_dring_state *dr;  in handshake_failure()  local
149 	dr = &vio->drings[VIO_DRIVER_RX_RING];  in handshake_failure()
150 	memset(dr, 0, sizeof(*dr));  in handshake_failure()
178 	struct vio_dring_state *dr = &vio->drings[VIO_DRIVER_TX_RING];  in send_dreg()  local
187 			dr->ncookies);  in send_dreg()
196 	u.pkt.num_descr = dr->num_entries;  in send_dreg()
197 	u.pkt.descr_size = dr->entry_size;  in send_dreg()
199 	u.pkt.num_cookies = dr->ncookies;  in send_dreg()
206 	for (i = 0; i < dr->ncookies; i++) {  in send_dreg()
207 		u.pkt.cookies[i] = dr->cookies[i];  in send_dreg()
430 	struct vio_dring_state *dr;  in process_dreg_info()  local
460 	dr = &vio->drings[VIO_DRIVER_RX_RING];  in process_dreg_info()
462 	dr->num_entries = pkt->num_descr;  in process_dreg_info()
463 	dr->entry_size = pkt->descr_size;  in process_dreg_info()
464 	dr->ncookies = pkt->num_cookies;  in process_dreg_info()
465 	for (i = 0; i < dr->ncookies; i++) {  in process_dreg_info()
466 		dr->cookies[i] = pkt->cookies[i];  in process_dreg_info()
477 	pkt->dring_ident = ++dr->ident;  in process_dreg_info()
485 	if (send_ctrl(vio, &pkt->tag, struct_size(pkt, cookies, dr->ncookies)) < 0)  in process_dreg_info()
503 	struct vio_dring_state *dr;  in process_dreg_ack()  local
511 	dr = &vio->drings[VIO_DRIVER_TX_RING];  in process_dreg_ack()
516 	dr->ident = pkt->dring_ident;  in process_dreg_ack()
563 	struct vio_dring_state *dr = &vio->drings[VIO_DRIVER_RX_RING];  in process_dunreg()  local
567 	if (pkt->dring_ident != dr->ident)  in process_dunreg()
572 	memset(dr, 0, sizeof(*dr));  in process_dunreg()