ip6mr_compat_ioctl   32 include/linux/mroute6.h extern int ip6mr_compat_ioctl(struct sock *sk, unsigned int cmd, void __user *arg);
ip6mr_compat_ioctl 1234 net/ipv6/raw.c 		return ip6mr_compat_ioctl(sk, cmd, compat_ptr(arg));