taglinefilesource code
imr_multiaddr49include/linux/in.hstruct in_addr imr_multiaddr;  /* IP multicast address of group */
imr_multiaddr286net/ipv4/ip_sockglue.cif((rt=ip_rt_route(mreq.imr_multiaddr.s_addr,0))!=NULL)
imr_multiaddr314net/ipv4/ip_sockglue.creturn ip_mc_join_group(sk,dev,mreq.imr_multiaddr.s_addr);
imr_multiaddr340net/ipv4/ip_sockglue.cif((rt=ip_rt_route(mreq.imr_multiaddr.s_addr,0))!=NULL)
imr_multiaddr365net/ipv4/ip_sockglue.creturn ip_mc_leave_group(sk,dev,mreq.imr_multiaddr.s_addr);