2 files changed, 20 insertions, 0 deletions

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 6997f62cb6a0..ffbddd03242b 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -3673,6 +3673,7 @@ int dev_get_port_parent_id(struct net_device *dev,
                            struct netdev_phys_item_id *ppid, bool recurse);
 bool netdev_port_same_parent_id(struct net_device *a, struct net_device *b);
 int dev_change_proto_down(struct net_device *dev, bool proto_down);
+int dev_change_proto_down_generic(struct net_device *dev, bool proto_down);
 struct sk_buff *validate_xmit_skb_list(struct sk_buff *skb, struct net_device *dev, bool *again);
 struct sk_buff *dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev,
                                     struct netdev_queue *txq, int *ret);
diff --git a/net/core/dev.c b/net/core/dev.c
index 8a0da95ff4cc..2b67f2aa59dd 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -7954,6 +7954,25 @@ int dev_change_proto_down(struct net_device *dev, bool proto_down)
 }
 EXPORT_SYMBOL(dev_change_proto_down);
 
+/**
+ *      dev_change_proto_down_generic - generic implementation for
+ *      ndo_change_proto_down that sets carrier according to
+ *      proto_down.
+ *
+ *      @dev: device
+ *      @proto_down: new value
+ */
+int dev_change_proto_down_generic(struct net_device *dev, bool proto_down)
+{
+        if (proto_down)
+                netif_carrier_off(dev);
+        else
+                netif_carrier_on(dev);
+        dev->proto_down = proto_down;
+        return 0;
+}
+EXPORT_SYMBOL(dev_change_proto_down_generic);
+
 u32 __dev_xdp_query(struct net_device *dev, bpf_op_t bpf_op,
                     enum bpf_netdev_command cmd)
 {