ipv6: ipv6_chk_prefix() rcu conversion (24ba333b) · Commits · 戴 / test

net/ipv6/addrconf.c

+3 −5

Original line number	Original line	Diff line number	Diff line
	@@ -1880,22 +1880,20 @@ EXPORT_SYMBOL(ipv6_chk_custom_prefix);

	int ipv6_chk_prefix(const struct in6_addr addr, struct net_device dev)		int ipv6_chk_prefix(const struct in6_addr addr, struct net_device dev)
	{		{
	struct inet6_dev *idev;		const struct inet6_ifaddr *ifa;
	struct inet6_ifaddr *ifa;		const struct inet6_dev *idev;
	int onlink;		int onlink;

	onlink = 0;		onlink = 0;
	rcu_read_lock();		rcu_read_lock();
	idev = __in6_dev_get(dev);		idev = __in6_dev_get(dev);
	if (idev) {		if (idev) {
	read_lock_bh(&idev->lock);		list_for_each_entry_rcu(ifa, &idev->addr_list, if_list) {
	list_for_each_entry(ifa, &idev->addr_list, if_list) {
	onlink = ipv6_prefix_equal(addr, &ifa->addr,		onlink = ipv6_prefix_equal(addr, &ifa->addr,
	ifa->prefix_len);		ifa->prefix_len);
	if (onlink)		if (onlink)
	break;		break;
	}		}
	read_unlock_bh(&idev->lock);
	}		}
	rcu_read_unlock();		rcu_read_unlock();
	return onlink;		return onlink;