xfrm: remove extranous rcu_read_lock
The handlers for xfrm_tunnel are always invoked with rcu read lock
already.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c
index 99af1f0..618bde8 100644
--- a/net/ipv4/ipip.c
+++ b/net/ipv4/ipip.c
@@ -365,8 +365,6 @@
}
err = -ENOENT;
-
- rcu_read_lock();
t = ipip_tunnel_lookup(dev_net(skb->dev), iph->daddr, iph->saddr);
if (t == NULL)
goto out;
@@ -398,7 +396,7 @@
t->err_count = 1;
t->err_time = jiffies;
out:
- rcu_read_unlock();
+
return err;
}
@@ -416,13 +414,11 @@
struct ip_tunnel *tunnel;
const struct iphdr *iph = ip_hdr(skb);
- rcu_read_lock();
tunnel = ipip_tunnel_lookup(dev_net(skb->dev), iph->saddr, iph->daddr);
if (tunnel != NULL) {
struct pcpu_tstats *tstats;
if (!xfrm4_policy_check(NULL, XFRM_POLICY_IN, skb)) {
- rcu_read_unlock();
kfree_skb(skb);
return 0;
}
@@ -445,11 +441,8 @@
ipip_ecn_decapsulate(iph, skb);
netif_rx(skb);
-
- rcu_read_unlock();
return 0;
}
- rcu_read_unlock();
return -1;
}
