SIOC_HCI_RAW_NODE_GET_FEATURES
if (ioctl(s, SIOC_HCI_RAW_NODE_GET_FEATURES, &rp.r2, sizeof(rp.r2)) < 0)
case SIOC_HCI_RAW_NODE_GET_FEATURES: {
if (ioctl(s, SIOC_HCI_RAW_NODE_GET_FEATURES, &r, sizeof(r)) < 0)