netdev: Do not use TX lock to protect address lists.

Now that we have a specific lock to protect the network
device unicast and multicast lists, remove extraneous
grabs of the TX lock in cases where the code only needs
address list protection.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 12 insertions, 26 deletions

diff --git a/net/core/dev.c b/net/core/dev.c
index ef1502d71f25..9b49f74a9820 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2981,11 +2981,9 @@ void __dev_set_rx_mode(struct net_device *dev)
 
 void dev_set_rx_mode(struct net_device *dev)
 {
-        netif_tx_lock_bh(dev);
-        netif_addr_lock(dev);
+        netif_addr_lock_bh(dev);
         __dev_set_rx_mode(dev);
-        netif_addr_unlock(dev);
-        netif_tx_unlock_bh(dev);
+        netif_addr_unlock_bh(dev);
 }
 
 int __dev_addr_delete(struct dev_addr_list **list, int *count,
@@ -3063,13 +3061,11 @@ int dev_unicast_delete(struct net_device *dev, void *addr, int alen)
 
         ASSERT_RTNL();
 
-        netif_tx_lock_bh(dev);
-        netif_addr_lock(dev);
+        netif_addr_lock_bh(dev);
         err = __dev_addr_delete(&dev->uc_list, &dev->uc_count, addr, alen, 0);
         if (!err)
                 __dev_set_rx_mode(dev);
-        netif_addr_unlock(dev);
-        netif_tx_unlock_bh(dev);
+        netif_addr_unlock_bh(dev);
         return err;
 }
 EXPORT_SYMBOL(dev_unicast_delete);
@@ -3091,13 +3087,11 @@ int dev_unicast_add(struct net_device *dev, void *addr, int alen)
 
         ASSERT_RTNL();
 
-        netif_tx_lock_bh(dev);
-        netif_addr_lock(dev);
+        netif_addr_lock_bh(dev);
         err = __dev_addr_add(&dev->uc_list, &dev->uc_count, addr, alen, 0);
         if (!err)
                 __dev_set_rx_mode(dev);
-        netif_addr_unlock(dev);
-        netif_tx_unlock_bh(dev);
+        netif_addr_unlock_bh(dev);
         return err;
 }
 EXPORT_SYMBOL(dev_unicast_add);
@@ -3164,14 +3158,12 @@ int dev_unicast_sync(struct net_device *to, struct net_device *from)
 {
         int err = 0;
 
-        netif_tx_lock_bh(to);
-        netif_addr_lock(to);
+        netif_addr_lock_bh(to);
         err = __dev_addr_sync(&to->uc_list, &to->uc_count,
                               &from->uc_list, &from->uc_count);
         if (!err)
                 __dev_set_rx_mode(to);
-        netif_addr_unlock(to);
-        netif_tx_unlock_bh(to);
+        netif_addr_unlock_bh(to);
         return err;
 }
 EXPORT_SYMBOL(dev_unicast_sync);
@@ -3187,9 +3179,7 @@ EXPORT_SYMBOL(dev_unicast_sync);
  */
 void dev_unicast_unsync(struct net_device *to, struct net_device *from)
 {
-        netif_tx_lock_bh(from);
-        netif_addr_lock(from);
-        netif_tx_lock_bh(to);
+        netif_addr_lock_bh(from);
         netif_addr_lock(to);
 
         __dev_addr_unsync(&to->uc_list, &to->uc_count,
@@ -3197,9 +3187,7 @@ void dev_unicast_unsync(struct net_device *to, struct net_device *from)
         __dev_set_rx_mode(to);
 
         netif_addr_unlock(to);
-        netif_tx_unlock_bh(to);
-        netif_addr_unlock(from);
-        netif_tx_unlock_bh(from);
+        netif_addr_unlock_bh(from);
 }
 EXPORT_SYMBOL(dev_unicast_unsync);
 
@@ -3219,8 +3207,7 @@ static void __dev_addr_discard(struct dev_addr_list **list)
 
 static void dev_addr_discard(struct net_device *dev)
 {
-        netif_tx_lock_bh(dev);
-        netif_addr_lock(dev);
+        netif_addr_lock_bh(dev);
 
         __dev_addr_discard(&dev->uc_list);
         dev->uc_count = 0;
@@ -3228,8 +3215,7 @@ static void dev_addr_discard(struct net_device *dev)
         __dev_addr_discard(&dev->mc_list);
         dev->mc_count = 0;
 
-        netif_addr_unlock(dev);
-        netif_tx_unlock_bh(dev);
+        netif_addr_unlock_bh(dev);
 }
 
 unsigned dev_get_flags(const struct net_device *dev)