/usr/src/kernels/3.10.0-1062.el7.x86_64/include/linux/igmp.h:114:extern int ip_mc_join_group_ssm(struct sock *sk, struct ip_mreqn *imr, /usr/src/kernels/3.10.0-1062.el7.x86_64/include/linux/igmp.h:116:extern int ip_mc_leave_group(struct sock *sk, struct ip_mreqn *imr); /...