[NET_SCHED]: Use nla_policy for attribute validation in actions
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/sched/act_mirred.c b/net/sched/act_mirred.c
index 6cb5e30..1aff005 100644
--- a/net/sched/act_mirred.c
+++ b/net/sched/act_mirred.c
@@ -54,6 +54,10 @@
return 0;
}
+static const struct nla_policy mirred_policy[TCA_MIRRED_MAX + 1] = {
+ [TCA_MIRRED_PARMS] = { .len = sizeof(struct tc_mirred) },
+};
+
static int tcf_mirred_init(struct nlattr *nla, struct nlattr *est,
struct tc_action *a, int ovr, int bind)
{
@@ -68,12 +72,11 @@
if (nla == NULL)
return -EINVAL;
- err = nla_parse_nested(tb, TCA_MIRRED_MAX, nla, NULL);
+ err = nla_parse_nested(tb, TCA_MIRRED_MAX, nla, mirred_policy);
if (err < 0)
return err;
- if (tb[TCA_MIRRED_PARMS] == NULL ||
- nla_len(tb[TCA_MIRRED_PARMS]) < sizeof(*parm))
+ if (tb[TCA_MIRRED_PARMS] == NULL)
return -EINVAL;
parm = nla_data(tb[TCA_MIRRED_PARMS]);