kern_ioctl
kern_ioctl(k, RTM_DELETE, 0);
kern_ioctl(k, RTM_DELETE, 0);
kern_ioctl(k, RTM_ADD,
kern_ioctl(k, RTM_CHANGE,
error = kern_ioctl(td, fd, cmd, (caddr_t)&bifr);
error = kern_ioctl(td, uap->fd, com, data);
(void)kern_ioctl(td, fd, MDIOCDETACH, (void *)mdio);
error = kern_ioctl(td, fd, MDIOCATTACH, (void *)mdio);
error = kern_ioctl(td, fd, MDIOCDETACH, (void *)mdio);
int kern_ioctl(struct thread *td, int fd, u_long com, caddr_t data);