PF_IUCV
if (sk && sk->sk_family == PF_IUCV)
.family = PF_IUCV,
if (protocol && protocol != PF_IUCV)
sock_unregister(PF_IUCV);
sock_unregister(PF_IUCV);
MODULE_ALIAS_NETPROTO(PF_IUCV);
sk = sk_alloc(&init_net, PF_IUCV, prio, &iucv_proto, kern);
[PF_IUCV] = "PF_IUCV",
case PF_IUCV: