break;
case OVS_ACTION_ATTR_USERSPACE: {
- const struct nlattr *userdata;
-
- userdata = nl_attr_find_nested(a, OVS_USERSPACE_ATTR_USERDATA);
- userspace(dp, packet, key, userdata);
+ if (userspace) {
+ const struct nlattr *userdata;
+ userdata = nl_attr_find_nested(a, OVS_USERSPACE_ATTR_USERDATA);
+ userspace(dp, packet, key, userdata);
+ }
break;
}