ofproto: Fix potential NULL dereference in ofproto_ct_*_zone_timeout_policy().
Spotted during code inspection.
Fixes: ("ofproto-dpif: Consume CT_Zone, and CT_Timeout_Policy tables")
Acked-by: Paolo Valerio
@@ -981,7 +981,7 @@ ofproto_ct_set_zone_timeout_policy(const char *datapath_type, uint16_t zone_id,
datapath_type = ofproto_normalize_type(datapath_type);
const struct ofproto_class *class = ofproto_class_find__(datapath_type);
- if (class->ct_set_zone_timeout_policy) {
+ if (class && class->ct_set_zone_timeout_policy) {
class->ct_set_zone_timeout_policy(datapath_type, zone_id,
timeout_policy);
}
@@ -993,7 +993,7 @@ ofproto_ct_del_zone_timeout_policy(const char *datapath_type, uint16_t zone_id)
datapath_type = ofproto_normalize_type(datapath_type);
const struct ofproto_class *class = ofproto_class_find__(datapath_type);
- if (class->ct_del_zone_timeout_policy) {
+ if (class && class->ct_del_zone_timeout_policy) {
class->ct_del_zone_timeout_policy(datapath_type, zone_id);
}
