[NET]: merge dev_unicast_discard and dev_mc_discard into one

this two functions could share the dev->_xmit_lock acquired context.

Signed-off-by: Denis Cheng <crquan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/core/dev.c b/net/core/dev.c
index 3ba63aa..17c9cbd 100644 (file)
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2777,23 +2777,16 @@ int dev_unicast_add(struct net_device *dev, void *addr, int alen)
 }
 EXPORT_SYMBOL(dev_unicast_add);
 
-static void dev_unicast_discard(struct net_device *dev)
+static void dev_addr_discard(struct net_device *dev)
 {
        netif_tx_lock_bh(dev);
+
        __dev_addr_discard(&dev->uc_list);
        dev->uc_count = 0;
-       netif_tx_unlock_bh(dev);
-}
 
-/*
- *     Discard multicast list when a device is downed
- */
-
-static void dev_mc_discard(struct net_device *dev)
-{
-       netif_tx_lock_bh(dev);
        __dev_addr_discard(&dev->mc_list);
        dev->mc_count = 0;
+
        netif_tx_unlock_bh(dev);
 }
 
@@ -3751,8 +3744,7 @@ void unregister_netdevice(struct net_device *dev)
        /*
         *      Flush the unicast and multicast chains
         */
-       dev_unicast_discard(dev);
-       dev_mc_discard(dev);
+       dev_addr_discard(dev);
 
        if (dev->uninit)
                dev->uninit(dev);