Commit 1c51dc9a authored by Li RongQing's avatar Li RongQing Committed by David S. Miller
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net/ipv6: compute anycast address hash only if dev is null 



avoid to compute the hash value if dev is not null, since
hash value is not used

Signed-off-by: default avatarLi RongQing <lirongqing@baidu.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 0db55093

net/ipv6/anycast.c

+4 −2
Original line number Diff line number Diff line
@@ -433,7 +433,6 @@ static bool ipv6_chk_acast_dev(struct net_device *dev, const struct in6_addr *ad 
bool ipv6_chk_acast_addr(struct net *net, struct net_device *dev,

			 const struct in6_addr *addr)

{

	unsigned int hash = inet6_acaddr_hash(net, addr);

	struct net_device *nh_dev;

	struct ifacaddr6 *aca;

	bool found = false;
@@ -441,7 +440,9 @@ bool ipv6_chk_acast_addr(struct net *net, struct net_device *dev, 
	rcu_read_lock();

	if (dev)

		found = ipv6_chk_acast_dev(dev, addr);

	else

	else {

		unsigned int hash = inet6_acaddr_hash(net, addr);



		hlist_for_each_entry_rcu(aca, &inet6_acaddr_lst[hash],

					 aca_addr_lst) {

			nh_dev = fib6_info_nh_dev(aca->aca_rt);
@@ -452,6 +453,7 @@ bool ipv6_chk_acast_addr(struct net *net, struct net_device *dev, 
				break;

			}

		}

	}

	rcu_read_unlock();

	return found;

}