658 	struct netmap_pipe_adapter *mna, *sna, *reqna;  in netmap_get_pipe_na()  local
731 	mna = netmap_pipe_find(pna, pipe_id);  in netmap_get_pipe_na()
732 	if (mna) {  in netmap_get_pipe_na()
733 		if (mna->role == role) {  in netmap_get_pipe_na()
734 			nm_prdis("found %s directly at %d", pipe_id, mna->parent_slot);  in netmap_get_pipe_na()
735 			reqna = mna;  in netmap_get_pipe_na()
737 			nm_prdis("found %s indirectly at %d", pipe_id, mna->parent_slot);  in netmap_get_pipe_na()
738 			reqna = mna->peer;  in netmap_get_pipe_na()
755 	mna = nm_os_malloc(sizeof(*mna));  in netmap_get_pipe_na()
756 	if (mna == NULL) {  in netmap_get_pipe_na()
760 	snprintf(mna->up.name, sizeof(mna->up.name), "%s{%s", pna->name, pipe_id);  in netmap_get_pipe_na()
762 	mna->role = NM_PIPE_ROLE_MASTER;  in netmap_get_pipe_na()
763 	mna->parent = pna;  in netmap_get_pipe_na()
764 	mna->parent_ifp = ifp;  in netmap_get_pipe_na()
766 	mna->up.nm_txsync = netmap_pipe_txsync;  in netmap_get_pipe_na()
767 	mna->up.nm_rxsync = netmap_pipe_rxsync;  in netmap_get_pipe_na()
768 	mna->up.nm_register = netmap_pipe_reg;  in netmap_get_pipe_na()
769 	mna->up.nm_dtor = netmap_pipe_dtor;  in netmap_get_pipe_na()
770 	mna->up.nm_krings_create = netmap_pipe_krings_create;  in netmap_get_pipe_na()
771 	mna->up.nm_krings_delete = netmap_pipe_krings_delete;  in netmap_get_pipe_na()
772 	mna->up.nm_mem = netmap_mem_get(pna->nm_mem);  in netmap_get_pipe_na()
773 	mna->up.na_flags |= NAF_MEM_OWNER | NAF_OFFSETS;  in netmap_get_pipe_na()
774 	mna->up.na_lut = pna->na_lut;  in netmap_get_pipe_na()
776 	mna->up.num_tx_rings = req->nr_tx_rings;  in netmap_get_pipe_na()
777 	nm_bound_var(&mna->up.num_tx_rings, 1,  in netmap_get_pipe_na()
779 	mna->up.num_rx_rings = req->nr_rx_rings;  in netmap_get_pipe_na()
780 	nm_bound_var(&mna->up.num_rx_rings, 1,  in netmap_get_pipe_na()
782 	mna->up.num_tx_desc = req->nr_tx_slots;  in netmap_get_pipe_na()
783 	nm_bound_var(&mna->up.num_tx_desc, pna->num_tx_desc,  in netmap_get_pipe_na()
785 	mna->up.num_rx_desc = req->nr_rx_slots;  in netmap_get_pipe_na()
786 	nm_bound_var(&mna->up.num_rx_desc, pna->num_rx_desc,  in netmap_get_pipe_na()
788 	error = netmap_attach_common(&mna->up);  in netmap_get_pipe_na()
792 	error = netmap_pipe_add(pna, mna);  in netmap_get_pipe_na()
797 	sna = nm_os_malloc(sizeof(*mna));  in netmap_get_pipe_na()
803 	*sna = *mna;  in netmap_get_pipe_na()
804 	sna->up.nm_mem = netmap_mem_get(mna->up.nm_mem);  in netmap_get_pipe_na()
806 	sna->up.num_tx_rings = mna->up.num_rx_rings;  in netmap_get_pipe_na()
807 	sna->up.num_tx_desc  = mna->up.num_rx_desc;  in netmap_get_pipe_na()
808 	sna->up.num_rx_rings = mna->up.num_tx_rings;  in netmap_get_pipe_na()
809 	sna->up.num_rx_desc  = mna->up.num_tx_desc;  in netmap_get_pipe_na()
817 	mna->peer = sna;  in netmap_get_pipe_na()
818 	sna->peer = mna;  in netmap_get_pipe_na()
829 		reqna = mna;  in netmap_get_pipe_na()
830 		mna->peer_ref = 1;  in netmap_get_pipe_na()
835 		netmap_adapter_get(&mna->up);  in netmap_get_pipe_na()
837 	nm_prdis("created master %p and slave %p", mna, sna);  in netmap_get_pipe_na()
854 	netmap_pipe_remove(pna, mna);  in netmap_get_pipe_na()
856 	nm_os_free(mna);  in netmap_get_pipe_na()