Commit c8204cab authored by Taehee Yoo's avatar Taehee Yoo Committed by Pablo Neira Ayuso

netfilter: nat: remove unnecessary rcu_read_lock in nf_nat_redirect_ipv{4/6}

nf_nat_redirect_ipv4() and nf_nat_redirect_ipv6() are only called by
netfilter hook point. so that rcu_read_lock and rcu_read_unlock() are
unnecessary.
Signed-off-by: default avatarTaehee Yoo <ap420073@gmail.com>
Signed-off-by: default avatarPablo Neira Ayuso <pablo@netfilter.org>
parent 4430b897
......@@ -52,13 +52,11 @@ nf_nat_redirect_ipv4(struct sk_buff *skb,
newdst = 0;
rcu_read_lock();
indev = __in_dev_get_rcu(skb->dev);
if (indev && indev->ifa_list) {
ifa = indev->ifa_list;
newdst = ifa->ifa_local;
}
rcu_read_unlock();
if (!newdst)
return NF_DROP;
......@@ -97,7 +95,6 @@ nf_nat_redirect_ipv6(struct sk_buff *skb, const struct nf_nat_range2 *range,
struct inet6_ifaddr *ifa;
bool addr = false;
rcu_read_lock();
idev = __in6_dev_get(skb->dev);
if (idev != NULL) {
read_lock_bh(&idev->lock);
......@@ -108,7 +105,6 @@ nf_nat_redirect_ipv6(struct sk_buff *skb, const struct nf_nat_range2 *range,
}
read_unlock_bh(&idev->lock);
}
rcu_read_unlock();
if (!addr)
return NF_DROP;
......
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