net: add netdev_lockdep_set_classes() helper

It is time to add netdev_lockdep_set_classes() helper
so that lockdep annotations per device type are easier to manage.

This removes a lot of copies and missing annotations.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 17 insertions, 0 deletions

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 541562333ba5..4f234b102892 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1946,6 +1946,23 @@ static inline void netdev_for_each_tx_queue(struct net_device *dev,
                 f(dev, &dev->_tx[i], arg);
 }
 
+#define netdev_lockdep_set_classes(dev)                         \
+{                                                               \
+        static struct lock_class_key qdisc_tx_busylock_key;     \
+        static struct lock_class_key qdisc_running_key;         \
+        static struct lock_class_key qdisc_xmit_lock_key;       \
+        static struct lock_class_key dev_addr_list_lock_key;    \
+        unsigned int i;                                         \
+                                                                \
+        (dev)->qdisc_tx_busylock = &qdisc_tx_busylock_key;      \
+        (dev)->qdisc_running_key = &qdisc_running_key;          \
+        lockdep_set_class(&(dev)->addr_list_lock,               \
+                          &dev_addr_list_lock_key);             \
+        for (i = 0; i < (dev)->num_tx_queues; i++)              \
+                lockdep_set_class(&(dev)->_tx[i]._xmit_lock,    \
+                                  &qdisc_xmit_lock_key);        \
+}
+
 struct netdev_queue *netdev_pick_tx(struct net_device *dev,
                                     struct sk_buff *skb,
                                     void *accel_priv);