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-rw-r--r--net/sched/act_nat.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/net/sched/act_nat.c b/net/sched/act_nat.c
index 5a512d4dc37c..0a3c8339767a 100644
--- a/net/sched/act_nat.c
+++ b/net/sched/act_nat.c
@@ -40,6 +40,10 @@ static struct tcf_hashinfo nat_hash_info = {
.lock = &nat_lock,
};
+static const struct nla_policy nat_policy[TCA_NAT_MAX + 1] = {
+ [TCA_NAT_PARMS] = { .len = sizeof(struct tc_nat) },
+};
+
static int tcf_nat_init(struct nlattr *nla, struct nlattr *est,
struct tc_action *a, int ovr, int bind)
{
@@ -52,12 +56,11 @@ static int tcf_nat_init(struct nlattr *nla, struct nlattr *est,
if (nla == NULL)
return -EINVAL;
- err = nla_parse_nested(tb, TCA_NAT_MAX, nla, NULL);
+ err = nla_parse_nested(tb, TCA_NAT_MAX, nla, nat_policy);
if (err < 0)
return err;
- if (tb[TCA_NAT_PARMS] == NULL ||
- nla_len(tb[TCA_NAT_PARMS]) < sizeof(*parm))
+ if (tb[TCA_NAT_PARMS] == NULL)
return -EINVAL;
parm = nla_data(tb[TCA_NAT_PARMS]);