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authorstephen hemminger <shemminger@vyatta.com>2012-09-24 18:12:25 (GMT)
committerDavid S. Miller <davem@davemloft.net>2012-09-27 22:12:37 (GMT)
commitb0558ef24a792906914fcad277f3befe2420e618 (patch)
tree65cacc7cfe54fd50aef515fdbfa52f2aaf532efb /net/ipv6/sit.c
parent0c5794a66c7c6443759e6098841767958a031187 (diff)
downloadlinux-b0558ef24a792906914fcad277f3befe2420e618.tar.xz
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>
Diffstat (limited to 'net/ipv6/sit.c')
-rw-r--r--net/ipv6/sit.c6
1 files changed, 0 insertions, 6 deletions
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index 3bd1bfc..3ed54ff 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -545,7 +545,6 @@ static int ipip6_err(struct sk_buff *skb, u32 info)
err = -ENOENT;
- rcu_read_lock();
t = ipip6_tunnel_lookup(dev_net(skb->dev),
skb->dev,
iph->daddr,
@@ -579,7 +578,6 @@ static int ipip6_err(struct sk_buff *skb, u32 info)
t->err_count = 1;
t->err_time = jiffies;
out:
- rcu_read_unlock();
return err;
}
@@ -599,7 +597,6 @@ static int ipip6_rcv(struct sk_buff *skb)
iph = ip_hdr(skb);
- rcu_read_lock();
tunnel = ipip6_tunnel_lookup(dev_net(skb->dev), skb->dev,
iph->saddr, iph->daddr);
if (tunnel != NULL) {
@@ -615,7 +612,6 @@ static int ipip6_rcv(struct sk_buff *skb)
if ((tunnel->dev->priv_flags & IFF_ISATAP) &&
!isatap_chksrc(skb, iph, tunnel)) {
tunnel->dev->stats.rx_errors++;
- rcu_read_unlock();
kfree_skb(skb);
return 0;
}
@@ -630,12 +626,10 @@ static int ipip6_rcv(struct sk_buff *skb)
netif_rx(skb);
- rcu_read_unlock();
return 0;
}
/* no tunnel matched, let upstream know, ipsec may handle it */
- rcu_read_unlock();
return 1;
out:
kfree_skb(skb);