HWSIM_ATTR_REG_STRICT_REG
ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
[HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },