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Diffstat (limited to 'net/sched/sch_gred.c')
-rw-r--r--net/sched/sch_gred.c16
1 files changed, 13 insertions, 3 deletions
diff --git a/net/sched/sch_gred.c b/net/sched/sch_gred.c
index 6b784838a53..365c7d8b17a 100644
--- a/net/sched/sch_gred.c
+++ b/net/sched/sch_gred.c
@@ -430,12 +430,16 @@ static int gred_change(struct Qdisc *sch, struct nlattr *opt)
struct gred_sched *table = qdisc_priv(sch);
struct tc_gred_qopt *ctl;
struct nlattr *tb[TCA_GRED_MAX + 1];
- int err = -EINVAL, prio = GRED_DEF_PRIO;
+ int err, prio = GRED_DEF_PRIO;
u8 *stab;
- if (opt == NULL || nla_parse_nested(tb, TCA_GRED_MAX, opt, NULL))
+ if (opt == NULL)
return -EINVAL;
+ err = nla_parse_nested(tb, TCA_GRED_MAX, opt, NULL);
+ if (err < 0)
+ return err;
+
if (tb[TCA_GRED_PARMS] == NULL && tb[TCA_GRED_STAB] == NULL)
return gred_change_table_def(sch, opt);
@@ -445,6 +449,7 @@ static int gred_change(struct Qdisc *sch, struct nlattr *opt)
nla_len(tb[TCA_GRED_STAB]) < 256)
return -EINVAL;
+ err = -EINVAL;
ctl = nla_data(tb[TCA_GRED_PARMS]);
stab = nla_data(tb[TCA_GRED_STAB]);
@@ -489,10 +494,15 @@ errout:
static int gred_init(struct Qdisc *sch, struct nlattr *opt)
{
struct nlattr *tb[TCA_GRED_MAX + 1];
+ int err;
- if (opt == NULL || nla_parse_nested(tb, TCA_GRED_MAX, opt, NULL))
+ if (opt == NULL)
return -EINVAL;
+ err = nla_parse_nested(tb, TCA_GRED_MAX, opt, NULL);
+ if (err < 0)
+ return err;
+
if (tb[TCA_GRED_PARMS] || tb[TCA_GRED_STAB])
return -EINVAL;