IP_CMSG_RECVOPTS 496 net/ipv4/ip_sockglue.c inet->cmsg_flags |= IP_CMSG_RECVOPTS; IP_CMSG_RECVOPTS 498 net/ipv4/ip_sockglue.c inet->cmsg_flags &= ~IP_CMSG_RECVOPTS; IP_CMSG_RECVOPTS 1017 net/ipv4/ip_sockglue.c val = (inet->cmsg_flags & IP_CMSG_RECVOPTS) != 0;