612 	const struct nm_desc *parent = arg;  in nm_open()  local
754 	if (IS_NETMAP_DESC(parent) && new_flags) {  in nm_open()
756 			D("overriding ARG1 %d", parent->req.nr_arg1);  in nm_open()
758 			parent->req.nr_arg1 : 4;  in nm_open()
760 			D("overriding ARG2 %d", parent->req.nr_arg2);  in nm_open()
762 			parent->req.nr_arg2 : 0;  in nm_open()
764 			D("overriding ARG3 %d", parent->req.nr_arg3);  in nm_open()
766 			parent->req.nr_arg3 : 0;  in nm_open()
769 			d->req.nr_tx_slots = parent->req.nr_tx_slots;  in nm_open()
770 			d->req.nr_rx_slots = parent->req.nr_rx_slots;  in nm_open()
771 			d->req.nr_tx_rings = parent->req.nr_tx_rings;  in nm_open()
772 			d->req.nr_rx_rings = parent->req.nr_rx_rings;  in nm_open()
776 				parent->req.nr_name, parent->req.nr_ringid,  in nm_open()
777 				parent->req.nr_flags);  in nm_open()
778 			memcpy(d->req.nr_name, parent->req.nr_name,  in nm_open()
780 			d->req.nr_ringid = parent->req.nr_ringid;  in nm_open()
781 			d->req.nr_flags = parent->req.nr_flags;  in nm_open()
793 	if ((!(new_flags & NM_OPEN_NO_MMAP) || parent) && nm_mmap(d, parent)) {  in nm_open()
879 nm_mmap(struct nm_desc *d, const struct nm_desc *parent)  in nm_mmap()  argument
883 	if (IS_NETMAP_DESC(parent) && parent->mem &&  in nm_mmap()
884 	    parent->req.nr_arg2 == d->req.nr_arg2) {  in nm_mmap()
887 		d->memsize = parent->memsize;  in nm_mmap()
888 		d->mem = parent->mem;  in nm_mmap()