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ipv4: inetdev_by_index() switch to RCU

PPATCH net-next-2.6 Applied Eric Dumazet 2 participants 2 messages Nov 2, 2009

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Networking Network drivers IPv4/IPv6
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Eric Dumazet

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#0 lore raw

Use dev_get_by_index_rcu() instead of __dev_get_by_index() and dev_base_lock rwlock

Signed-off-by Eric Dumazet <[email protected]>

---

net/ipv4/devinet.c +4 -3
index 5df2f6a..ccccaae 100644
@@ -405,11 +405,12 @@ struct in_device *inetdev_by_index(struct net *net, int ifindex)
 {
 	struct net_device *dev;
 	struct in_device *in_dev = NULL;
-	read_lock(&dev_base_lock);
-	dev = __dev_get_by_index(net, ifindex);
+
+	rcu_read_lock();
+	dev = dev_get_by_index_rcu(net, ifindex);
 	if (dev)
 		in_dev = in_dev_get(dev);
-	read_unlock(&dev_base_lock);
+	rcu_read_unlock();
 	return in_dev;
 }