[PATCH RFC net-next 1/3] net: core: export call_netdevice_notifiers_info

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When a bridge binding flag is changed for a vlan interface, the
vlan_dev_change_flags function in the 8021q module is called. Currently, this
function only sets the flag for the vlan interface and returns, which results in
a buggy behavior; it also needs to let the bridge module module know that upper
device for the bridge has changed by propagating NETDEV_CHANGEUPPER event. This
event can be triggered using call_netdevice_notifiers_info function, so export
this function.

Signed-off-by: Sevinj Aghayeva <sevinj.aghayeva@xxxxxxxxx>
---
 include/linux/netdevice.h | 2 ++
 net/core/dev.c            | 7 +++----
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 2563d30736e9..d17ef56c8a06 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -2898,6 +2898,8 @@ netdev_notifier_info_to_extack(const struct netdev_notifier_info *info)
 }
 
 int call_netdevice_notifiers(unsigned long val, struct net_device *dev);
+int call_netdevice_notifiers_info(unsigned long val,
+				  struct netdev_notifier_info *info);
 
 
 extern rwlock_t				dev_base_lock;		/* Device list lock */
diff --git a/net/core/dev.c b/net/core/dev.c
index 30a1603a7225..50e7483946e0 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -160,8 +160,6 @@ struct list_head ptype_base[PTYPE_HASH_SIZE] __read_mostly;
 struct list_head ptype_all __read_mostly;	/* Taps */
 
 static int netif_rx_internal(struct sk_buff *skb);
-static int call_netdevice_notifiers_info(unsigned long val,
-					 struct netdev_notifier_info *info);
 static int call_netdevice_notifiers_extack(unsigned long val,
 					   struct net_device *dev,
 					   struct netlink_ext_ack *extack);
@@ -1927,8 +1925,8 @@ static void move_netdevice_notifiers_dev_net(struct net_device *dev,
  *	are as for raw_notifier_call_chain().
  */
 
-static int call_netdevice_notifiers_info(unsigned long val,
-					 struct netdev_notifier_info *info)
+int call_netdevice_notifiers_info(unsigned long val,
+				  struct netdev_notifier_info *info)
 {
 	struct net *net = dev_net(info->dev);
 	int ret;
@@ -1944,6 +1942,7 @@ static int call_netdevice_notifiers_info(unsigned long val,
 		return ret;
 	return raw_notifier_call_chain(&netdev_chain, val, info);
 }
+EXPORT_SYMBOL(call_netdevice_notifiers_info);
 
 /**
  *	call_netdevice_notifiers_info_robust - call per-netns notifier blocks
-- 
2.25.1




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