net: pass info struct via netdevice notifier
So far, only net_device * could be passed along with netdevice notifier
event. This patch provides a possibility to pass custom structure
able to provide info that event listener needs to know.
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
v2->v3: fix typo on simeth
shortened dev_getter
shortened notifier_info struct name
v1->v2: fix notifier_call parameter in call_netdevice_notifier()
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 6b2bb46..13a3484 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1599,6 +1599,19 @@
extern int register_netdevice_notifier(struct notifier_block *nb);
extern int unregister_netdevice_notifier(struct notifier_block *nb);
+
+struct netdev_notifier_info {
+ struct net_device *dev;
+};
+
+static inline struct net_device *
+netdev_notifier_info_to_dev(const struct netdev_notifier_info *info)
+{
+ return info->dev;
+}
+
+extern int call_netdevice_notifiers_info(unsigned long val, struct net_device *dev,
+ struct netdev_notifier_info *info);
extern int call_netdevice_notifiers(unsigned long val, struct net_device *dev);