ng_hci_read_clock_offset_compl_ep
ng_hci_read_clock_offset_compl_ep *ep = NULL;
ep = mtod(event, ng_hci_read_clock_offset_compl_ep *);
ng_hci_read_clock_offset_compl_ep *ep =
(ng_hci_read_clock_offset_compl_ep *)(e + 1);