SO_HCI_EVT_FILTER
SO_HCI_EVT_FILTER, &old->event_mask, &len) == -1
SO_HCI_EVT_FILTER, &new->event_mask, len) == -1)
if (rump_sys_setsockopt(s, BTPROTO_HCI, SO_HCI_EVT_FILTER,
case SO_HCI_EVT_FILTER:
case SO_HCI_EVT_FILTER: /* set event filter */
|| setsockopt(fd, BTPROTO_HCI, SO_HCI_EVT_FILTER, &f, sizeof(f)) < 0