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mac802154: add ifname change notifier

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This patch adds a netdev notifier for interface renaming. We have a name
attribute inside of subif data struct. This is needed to have always the
actual netdev name in sdata name attribute.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Alexander Aring 2014-11-12 03:36:53 +01:00 committed by Marcel Holtmann
parent 912f67aec7
commit be4fd8e5d9
3 changed files with 53 additions and 0 deletions
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3
net/mac802154/ieee802154_i.h
View file

@ -169,6 +169,9 @@ void mac802154_get_table(struct net_device *dev,
struct ieee802154_llsec_table **t);
void mac802154_unlock_table(struct net_device *dev);
/* interface handling */
int ieee802154_iface_init(void);
void ieee802154_iface_exit(void);
struct net_device *
mac802154_add_iface(struct wpan_phy *phy, const char *name, int type);
void ieee802154_if_remove(struct ieee802154_sub_if_data *sdata);

35
net/mac802154/iface.c
View file

@ -548,3 +548,38 @@ void ieee802154_remove_interfaces(struct ieee802154_local *local)
}
mutex_unlock(&local->iflist_mtx);
}
static int netdev_notify(struct notifier_block *nb,
unsigned long state, void *ptr)
{
struct net_device *dev = netdev_notifier_info_to_dev(ptr);
struct ieee802154_sub_if_data *sdata;
if (state != NETDEV_CHANGENAME)
return NOTIFY_DONE;
if (!dev->ieee802154_ptr || !dev->ieee802154_ptr->wpan_phy)
return NOTIFY_DONE;
if (dev->ieee802154_ptr->wpan_phy->privid != mac802154_wpan_phy_privid)
return NOTIFY_DONE;
sdata = IEEE802154_DEV_TO_SUB_IF(dev);
memcpy(sdata->name, dev->name, IFNAMSIZ);
return NOTIFY_OK;
}
static struct notifier_block mac802154_netdev_notifier = {
.notifier_call = netdev_notify,
};
int ieee802154_iface_init(void)
{
return register_netdevice_notifier(&mac802154_netdev_notifier);
}
void ieee802154_iface_exit(void)
{
unregister_netdevice_notifier(&mac802154_netdev_notifier);
}

15
net/mac802154/main.c
View file

@ -182,5 +182,20 @@ void ieee802154_unregister_hw(struct ieee802154_hw *hw)
}
EXPORT_SYMBOL(ieee802154_unregister_hw);
static int __init ieee802154_init(void)
{
return ieee802154_iface_init();
}
static void __exit ieee802154_exit(void)
{
ieee802154_iface_exit();
rcu_barrier();
}
subsys_initcall(ieee802154_init);
module_exit(ieee802154_exit);
MODULE_DESCRIPTION("IEEE 802.15.4 subsystem");
MODULE_LICENSE("GPL v2");