int tipc_nl_node_get_link(struct sk_buff *skb, struct genl_info *info)
{
	struct net *net = genl_info_net(info);
	struct nlattr *attrs[TIPC_NLA_LINK_MAX + 1];
	struct tipc_nl_msg msg;
	char *name;
	int err;

	msg.portid = info->snd_portid;
	msg.seq = info->snd_seq;

	if (!info->attrs[TIPC_NLA_LINK])
		return -EINVAL;

	err = nla_parse_nested_deprecated(attrs, TIPC_NLA_LINK_MAX,
					  info->attrs[TIPC_NLA_LINK],
					  tipc_nl_link_policy, info->extack);
	if (err)
		return err;

	if (!attrs[TIPC_NLA_LINK_NAME])
		return -EINVAL;

	name = nla_data(attrs[TIPC_NLA_LINK_NAME]);

	msg.skb = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
	if (!msg.skb)
		return -ENOMEM;

	if (strcmp(name, tipc_bclink_name) == 0) {
		err = tipc_nl_add_bc_link(net, &msg, tipc_net(net)->bcl);
		if (err)
			goto err_free;
	} else {
		int bearer_id;
		struct tipc_node *node;
		struct tipc_link *link;

		node = tipc_node_find_by_name(net, name, &bearer_id);
		if (!node) {
			err = -EINVAL;
			goto err_free;
		}

		tipc_node_read_lock(node);
		link = node->links[bearer_id].link;
		if (!link) {
			tipc_node_read_unlock(node);
			err = -EINVAL;
			goto err_free;
		}

		err = __tipc_nl_add_link(net, &msg, link, 0);
		tipc_node_read_unlock(node);
		if (err)
			goto err_free;
	}

	return genlmsg_reply(msg.skb, info);

err_free:
	nlmsg_free(msg.skb);
	return err;
}
int tipc_nl_node_get_link(struct sk_buff *skb, struct genl_info *info)
{
	struct net *net = genl_info_net(info);
	struct nlattr *attrs[TIPC_NLA_LINK_MAX + 1];
	struct tipc_nl_msg msg;
	char *name;
	int err;

	msg.portid = info->snd_portid;
	msg.seq = info->snd_seq;

	if (!info->attrs[TIPC_NLA_LINK])
		return -EINVAL;

	err = nla_parse_nested_deprecated(attrs, TIPC_NLA_LINK_MAX,
					  info->attrs[TIPC_NLA_LINK],
					  tipc_nl_link_policy, info->extack);
	if (err)
		return err;

	if (!attrs[TIPC_NLA_LINK_NAME])
		return -EINVAL;

	name = nla_data(attrs[TIPC_NLA_LINK_NAME]);

	msg.skb = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
	if (!msg.skb)
		return -ENOMEM;

	if (strcmp(name, tipc_bclink_name) == 0) {
		err = tipc_nl_add_bc_link(net, &msg, tipc_net(net)->bcl);
		if (err)
			goto err_free;
	} else {
		int bearer_id;
		struct tipc_node *node;
		struct tipc_link *link;

		node = tipc_node_find_by_name(net, name, &bearer_id);
		if (!node) {
			err = -EINVAL;
			goto err_free;
		}

		tipc_node_read_lock(node);
		link = node->links[bearer_id].link;
		if (!link) {
			tipc_node_read_unlock(node);
			err = -EINVAL;
			goto err_free;
		}

		err = __tipc_nl_add_link(net, &msg, link, 0);
		tipc_node_read_unlock(node);
		if (err)
			goto err_free;
	}

	return genlmsg_reply(msg.skb, info);

err_free:
	nlmsg_free(msg.skb);
	return err;
}