NFTA_RULE_EXPRESSIONS
[NFTA_RULE_EXPRESSIONS] = NLA_POLICY_NESTED_ARRAY(nft_expr_policy),
list = nla_nest_start_noflag(skb, NFTA_RULE_EXPRESSIONS);
if (nla[NFTA_RULE_EXPRESSIONS]) {
nla_for_each_nested(tmp, nla[NFTA_RULE_EXPRESSIONS], rem) {