[BRIDGE]: forwarding remove unneeded preempt and bh diasables
Optimize the forwarding and transmit paths. Both places are
called with bottom half/no preempt so there is no need to use
spin_lock_bh or rcu_read_lock.
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/bridge/br_device.c b/net/bridge/br_device.c
index 0b33a7b..0c88a2a 100644
--- a/net/bridge/br_device.c
+++ b/net/bridge/br_device.c
@@ -27,6 +27,7 @@
return &br->statistics;
}
+/* net device transmit always called with no BH (preempt_disabled) */
int br_dev_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct net_bridge *br = netdev_priv(dev);
@@ -39,7 +40,6 @@
skb->mac.raw = skb->data;
skb_pull(skb, ETH_HLEN);
- rcu_read_lock();
if (dest[0] & 1)
br_flood_deliver(br, skb, 0);
else if ((dst = __br_fdb_get(br, dest)) != NULL)
@@ -47,7 +47,6 @@
else
br_flood_deliver(br, skb, 0);
- rcu_read_unlock();
return 0;
}