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@xxxxxxxxx>
---
net/mac802154/ieee802154_i.h | 3 +++
net/mac802154/iface.c | 35 +++++++++++++++++++++++++++++++++++
net/mac802154/main.c | 15 +++++++++++++++
3 files changed, 53 insertions(+)
diff --git a/net/mac802154/ieee802154_i.h b/net/mac802154/ieee802154_i.h
index 4be5e23..69cb585 100644
--- a/net/mac802154/ieee802154_i.h
+++ b/net/mac802154/ieee802154_i.h
@@ -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);
diff --git a/net/mac802154/iface.c b/net/mac802154/iface.c
index 85d2155..ec92b48 100644
--- a/net/mac802154/iface.c
+++ b/net/mac802154/iface.c
@@ -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);
+}
diff --git a/net/mac802154/main.c b/net/mac802154/main.c
index 40a3264..46c76e0 100644
--- a/net/mac802154/main.c
+++ b/net/mac802154/main.c
@@ -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");
--
2.1.3
--
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