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net: add possibility to pass information about upper device via notifier

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Sometimes the drivers and other code would find it handy to know some
internal information about upper device being changed. So allow upper-code
to pass information down to notifier listeners during linking.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Pirko
2015-12-03 12:12:11 +01:00
committed by David S. Miller
parent 6dffb0447c
commit 29bf24afb2
8 changed files with 15 additions and 11 deletions
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3
include/linux/netdevice.h
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@@ -2163,6 +2163,7 @@ struct netdev_notifier_changeupper_info {
struct net_device *upper_dev; /* new upper dev */
bool master; /* is upper dev master */
bool linking; /* is the nofication for link or unlink */
void *upper_info; /* upper dev info */
};
static inline void netdev_notifier_info_init(struct netdev_notifier_info *info,
@@ -3620,7 +3621,7 @@ struct net_device *netdev_master_upper_dev_get_rcu(struct net_device *dev);
int netdev_upper_dev_link(struct net_device *dev, struct net_device *upper_dev);
int netdev_master_upper_dev_link(struct net_device *dev,
struct net_device *upper_dev,
void *upper_priv);
void *upper_priv, void *upper_info);
void netdev_upper_dev_unlink(struct net_device *dev,
struct net_device *upper_dev);
void netdev_adjacent_rename_links(struct net_device *dev, char *oldname);