ip_mroute_getsockopt  161 include/linux/mroute.h int ip_mroute_getsockopt(struct sock *sock,
ip_mroute_getsockopt 1031 net/ipv4/ipmr.c int ip_mroute_getsockopt(struct sock *sk,int optname,char __user *optval,int __user *optlen)