1 files changed, 14 insertions, 1 deletions

diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index 7a0b616557ab..6e4f34721080 100644
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -322,7 +322,20 @@ NETDEVICE_SHOW_RW(flags, fmt_hex);
 
 static int change_tx_queue_len(struct net_device *dev, unsigned long new_len)
 {
-        dev->tx_queue_len = new_len;
+        int res, orig_len = dev->tx_queue_len;
+
+        if (new_len != orig_len) {
+                dev->tx_queue_len = new_len;
+                res = call_netdevice_notifiers(NETDEV_CHANGE_TX_QUEUE_LEN, dev);
+                res = notifier_to_errno(res);
+                if (res) {
+                        netdev_err(dev,
+                                   "refused to change device tx_queue_len\n");
+                        dev->tx_queue_len = orig_len;
+                        return -EFAULT;
+                }
+        }
+
         return 0;
 }