HWSIM_ATTR_SUPPORT_BACKGROUND_RADAR
ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_BACKGROUND_RADAR);
if (info->attrs[HWSIM_ATTR_SUPPORT_BACKGROUND_RADAR])
[HWSIM_ATTR_SUPPORT_BACKGROUND_RADAR] = { .type = NLA_FLAG },