static int mld_force_mld_version(const struct inet6_dev *idev)
{
	/* Normally, both are 0 here. If enforcement to a particular is
	 * being used, individual device enforcement will have a lower
	 * precedence over 'all' device (.../conf/all/force_mld_version).
	 */

	if (dev_net(idev->dev)->ipv6.devconf_all->force_mld_version != 0)
		return dev_net(idev->dev)->ipv6.devconf_all->force_mld_version;
	else
		return idev->cnf.force_mld_version;
}
static int mld_force_mld_version(const struct inet6_dev *idev)
{
	 

	if (dev_net(idev->dev)->ipv6.devconf_all->force_mld_version != 0)
		return dev_net(idev->dev)->ipv6.devconf_all->force_mld_version;
	else
		return idev->cnf.force_mld_version;
}