321 	int actlen, off;  in cdceem_handle_cmd()  local
324 	off = *offp;  in cdceem_handle_cmd()
340 		if (pktlen > (actlen - off)) {  in cdceem_handle_cmd()
343 			    pktlen, actlen - off);  in cdceem_handle_cmd()
356 		usbd_copy_out(pc, off, sc->sc_echo_buffer, pktlen);  in cdceem_handle_cmd()
357 		off += pktlen;  in cdceem_handle_cmd()
364 		if (pktlen > (actlen - off)) {  in cdceem_handle_cmd()
368 			    pktlen, actlen - off);  in cdceem_handle_cmd()
379 		usbd_copy_out(pc, off, sc->sc_echo_buffer, pktlen);  in cdceem_handle_cmd()
380 		off += pktlen;  in cdceem_handle_cmd()
414 	*offp = off;  in cdceem_handle_cmd()
428 	int off;  in cdceem_handle_data()  local
430 	off = *offp;  in cdceem_handle_data()
450 	if (pktlen > (actlen - off)) {  in cdceem_handle_data()
453 		    pktlen, actlen - off);  in cdceem_handle_data()
474 	usbd_copy_out(pc, off, mtod(m, uint8_t *), pktlen);  in cdceem_handle_data()
475 	off += pktlen;  in cdceem_handle_data()
477 	usbd_copy_out(pc, off, &received_crc, sizeof(received_crc));  in cdceem_handle_data()
478 	off += sizeof(received_crc);  in cdceem_handle_data()
498 	*offp = off;  in cdceem_handle_data()
506 	int actlen, aframes, off;  in cdceem_bulk_read_callback()  local
518 		off = 0;  in cdceem_bulk_read_callback()
520 		while ((off + sizeof(hdr)) <= actlen) {  in cdceem_bulk_read_callback()
521 			usbd_copy_out(pc, off, &hdr, sizeof(hdr));  in cdceem_bulk_read_callback()
523 			off += sizeof(hdr);  in cdceem_bulk_read_callback()
533 				cdceem_handle_cmd(xfer, hdr, &off);  in cdceem_bulk_read_callback()
535 				cdceem_handle_data(xfer, hdr, &off);  in cdceem_bulk_read_callback()
538 			KASSERT(off <= actlen,  in cdceem_bulk_read_callback()
539 			    ("%s: went past the buffer, off %d, actlen %d",  in cdceem_bulk_read_callback()
540 			     __func__, off, actlen));  in cdceem_bulk_read_callback()
569 	int maxlen __diagused, off;  in cdceem_send_echo()  local
572 	off = *offp;  in cdceem_send_echo()
580 	KASSERT(off + sizeof(hdr) + sizeof(CDCEEM_ECHO_PAYLOAD) < maxlen,  in cdceem_send_echo()
582 	    off + sizeof(hdr) + sizeof(CDCEEM_ECHO_PAYLOAD)));  in cdceem_send_echo()
591 	usbd_copy_in(pc, off, &hdr, sizeof(hdr));  in cdceem_send_echo()
592 	off += sizeof(hdr);  in cdceem_send_echo()
594 	usbd_copy_in(pc, off, CDCEEM_ECHO_PAYLOAD,  in cdceem_send_echo()
596 	off += sizeof(CDCEEM_ECHO_PAYLOAD);  in cdceem_send_echo()
600 	*offp = off;  in cdceem_send_echo()
608 	int maxlen __diagused, off;  in cdceem_send_echo_response()  local
611 	off = *offp;  in cdceem_send_echo_response()
616 	KASSERT(off + sizeof(hdr) + sc->sc_echo_len < maxlen,  in cdceem_send_echo_response()
618 	    off + sizeof(hdr) + sc->sc_echo_len));  in cdceem_send_echo_response()
629 	usbd_copy_in(pc, off, &hdr, sizeof(hdr));  in cdceem_send_echo_response()
630 	off += sizeof(hdr);  in cdceem_send_echo_response()
632 	usbd_copy_in(pc, off, sc->sc_echo_buffer, sc->sc_echo_len);  in cdceem_send_echo_response()
633 	off += sc->sc_echo_len;  in cdceem_send_echo_response()
638 	*offp = off;  in cdceem_send_echo_response()
648 	int maxlen __diagused, off;  in cdceem_send_data()  local
652 	off = *offp;  in cdceem_send_data()
667 	KASSERT(off + sizeof(hdr) + m->m_pkthdr.len + 4 < maxlen,  in cdceem_send_data()
669 	    off + sizeof(hdr) + m->m_pkthdr.len + 4));  in cdceem_send_data()
680 	usbd_copy_in(pc, off, &hdr, sizeof(hdr));  in cdceem_send_data()
681 	off += sizeof(hdr);  in cdceem_send_data()
683 	usbd_m_copy_in(pc, off, m, 0, m->m_pkthdr.len);  in cdceem_send_data()
684 	off += m->m_pkthdr.len;  in cdceem_send_data()
693 	usbd_copy_in(pc, off, &crc, sizeof(crc));  in cdceem_send_data()
694 	off += sizeof(crc);  in cdceem_send_data()
704 	*offp = off;  in cdceem_send_data()
712 	int actlen, aframes, maxlen __diagused, off;  in cdceem_bulk_write_callback()  local
728 		off = 0;  in cdceem_bulk_write_callback()
732 			cdceem_send_echo(xfer, &off);  in cdceem_bulk_write_callback()
734 			cdceem_send_echo_response(xfer, &off);  in cdceem_bulk_write_callback()
736 			cdceem_send_data(xfer, &off);  in cdceem_bulk_write_callback()
739 		KASSERT(off <= maxlen,  in cdceem_bulk_write_callback()
740 		    ("%s: went past the buffer, off %d, maxlen %d",  in cdceem_bulk_write_callback()
741 		     __func__, off, maxlen));  in cdceem_bulk_write_callback()
743 		if (off > 0) {  in cdceem_bulk_write_callback()
744 			CDCEEM_DEBUG(sc, "starting transfer, length %d", off);  in cdceem_bulk_write_callback()
745 			usbd_xfer_set_frame_len(xfer, 0, off);  in cdceem_bulk_write_callback()