net: add possibility to pass information about upper device via notifier
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 <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c
index a7f4f10..aa8867e1d 100644
--- a/net/batman-adv/hard-interface.c
+++ b/net/batman-adv/hard-interface.c
@@ -465,7 +465,7 @@
bat_priv = netdev_priv(hard_iface->soft_iface);
ret = netdev_master_upper_dev_link(hard_iface->net_dev,
- soft_iface, NULL);
+ soft_iface, NULL, NULL);
if (ret)
goto err_dev;
diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c
index 781abc34..8d1d4a2 100644
--- a/net/bridge/br_if.c
+++ b/net/bridge/br_if.c
@@ -493,7 +493,7 @@
dev->priv_flags |= IFF_BRIDGE_PORT;
- err = netdev_master_upper_dev_link(dev, br->dev, NULL);
+ err = netdev_master_upper_dev_link(dev, br->dev, NULL, NULL);
if (err)
goto err5;
diff --git a/net/core/dev.c b/net/core/dev.c
index 27d052b..8ed8866 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -5421,7 +5421,7 @@
static int __netdev_upper_dev_link(struct net_device *dev,
struct net_device *upper_dev, bool master,
- void *upper_priv)
+ void *upper_priv, void *upper_info)
{
struct netdev_notifier_changeupper_info changeupper_info;
struct netdev_adjacent *i, *j, *to_i, *to_j;
@@ -5445,6 +5445,7 @@
changeupper_info.upper_dev = upper_dev;
changeupper_info.master = master;
changeupper_info.linking = true;
+ changeupper_info.upper_info = upper_info;
ret = call_netdevice_notifiers_info(NETDEV_PRECHANGEUPPER, dev,
&changeupper_info.info);
@@ -5549,7 +5550,7 @@
int netdev_upper_dev_link(struct net_device *dev,
struct net_device *upper_dev)
{
- return __netdev_upper_dev_link(dev, upper_dev, false, NULL);
+ return __netdev_upper_dev_link(dev, upper_dev, false, NULL, NULL);
}
EXPORT_SYMBOL(netdev_upper_dev_link);
@@ -5558,6 +5559,7 @@
* @dev: device
* @upper_dev: new upper device
* @upper_priv: upper device private
+ * @upper_info: upper info to be passed down via notifier
*
* Adds a link to device which is upper to this one. In this case, only
* one master upper device can be linked, although other non-master devices
@@ -5567,9 +5569,10 @@
*/
int netdev_master_upper_dev_link(struct net_device *dev,
struct net_device *upper_dev,
- void *upper_priv)
+ void *upper_priv, void *upper_info)
{
- return __netdev_upper_dev_link(dev, upper_dev, true, upper_priv);
+ return __netdev_upper_dev_link(dev, upper_dev, true,
+ upper_priv, upper_info);
}
EXPORT_SYMBOL(netdev_master_upper_dev_link);
diff --git a/net/openvswitch/vport-netdev.c b/net/openvswitch/vport-netdev.c
index 3ee3df1..8f4dd4c 100644
--- a/net/openvswitch/vport-netdev.c
+++ b/net/openvswitch/vport-netdev.c
@@ -105,7 +105,7 @@
rtnl_lock();
err = netdev_master_upper_dev_link(vport->dev,
- get_dpdev(vport->dp), NULL);
+ get_dpdev(vport->dp), NULL, NULL);
if (err)
goto error_unlock;
