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net: pass info struct via netdevice notifier

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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>
This commit is contained in:
Jiri Pirko
2013-05-28 01:30:21 +00:00
committed by David S. Miller
parent b1098bbe1b
commit 351638e7de
80 changed files with 172 additions and 127 deletions
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13
include/linux/netdevice.h
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@@ -1599,6 +1599,19 @@ struct packet_offload {
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);