pppoe_relay
&po->pppoe_relay);
memset(&po->pppoe_relay, 0, sizeof(po->pppoe_relay));
if (copy_from_user(&po->pppoe_relay,
if (po->pppoe_relay.sa_family != AF_PPPOX ||
po->pppoe_relay.sa_protocol != PX_PROTO_OE)
relay_po = __get_item_by_addr(sock_net(sk), &po->pppoe_relay);