NHA_OP_FLAGS
*op_flags = nla_get_u32_default(tb[NHA_OP_FLAGS], 0);
filter->op_flags = nla_get_u32_default(tb[NHA_OP_FLAGS], 0);
[NHA_OP_FLAGS] = NLA_POLICY_MASK(NLA_U32,
[NHA_OP_FLAGS] = NLA_POLICY_MASK(NLA_U32,
nla_put_u32(skb, NHA_OP_FLAGS, resp_op_flags))