TCA_ROUTE4_FROM
[TCA_ROUTE4_FROM] = NLA_POLICY_MAX(NLA_U32, 0xFF),
if (tb[TCA_ROUTE4_FROM] && tb[TCA_ROUTE4_IIF]) {
NL_SET_ERR_MSG_ATTR(extack, tb[TCA_ROUTE4_FROM],
if (tb[TCA_ROUTE4_FROM]) {
id = nla_get_u32(tb[TCA_ROUTE4_FROM]);
if (tb[TCA_ROUTE4_FROM])
if (nla_put_u32(skb, TCA_ROUTE4_FROM, id))