extern int nla_parse(struct nlattr *tb[], int maxtype,
struct nlattr *head, int len,
const struct nla_policy *policy);
+extern int nla_policy_len(const struct nla_policy *, int);
extern struct nlattr * nla_find(struct nlattr *head, int len, int attrtype);
extern size_t nla_strlcpy(char *dst, const struct nlattr *nla,
size_t dstsize);