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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 <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.1
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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/bonding/bond_main.c
View File

@ -1204,7 +1204,7 @@ static int bond_master_upper_dev_link(struct net_device *bond_dev,
{
int err;
err = netdev_master_upper_dev_link(slave_dev, bond_dev, slave);
err = netdev_master_upper_dev_link(slave_dev, bond_dev, slave, NULL);
if (err)
return err;
slave_dev->flags |= IFF_SLAVE;

2
drivers/net/team/team.c
View File

@ -1083,7 +1083,7 @@ static int team_upper_dev_link(struct net_device *dev,
{
int err;
err = netdev_master_upper_dev_link(port_dev, dev, NULL);
err = netdev_master_upper_dev_link(port_dev, dev, NULL, NULL);
if (err)
return err;
port_dev->priv_flags |= IFF_TEAM_PORT;

2
drivers/net/vrf.c
View File

@ -624,7 +624,7 @@ static int do_vrf_add_slave(struct net_device *dev, struct net_device *port_dev)
goto out_fail;
}
ret = netdev_master_upper_dev_link(port_dev, dev, NULL);
ret = netdev_master_upper_dev_link(port_dev, dev, NULL, NULL);
if (ret < 0)
goto out_unregister;

3
include/linux/netdevice.h
View File

@ -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);

2
net/batman-adv/hard-interface.c
View File

@ -465,7 +465,7 @@ int batadv_hardif_enable_interface(struct batadv_hard_iface *hard_iface,
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;

2
net/bridge/br_if.c
View File

@ -493,7 +493,7 @@ int br_add_if(struct net_bridge *br, struct net_device *dev)
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;

11
net/core/dev.c
View File

@ -5421,7 +5421,7 @@ static void __netdev_adjacent_dev_unlink_neighbour(struct net_device *dev,
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 @@ static int __netdev_upper_dev_link(struct net_device *dev,
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 @@ rollback_mesh:
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 @@ EXPORT_SYMBOL(netdev_upper_dev_link);
* @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 @@ EXPORT_SYMBOL(netdev_upper_dev_link);
*/
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);

2
net/openvswitch/vport-netdev.c
View File

@ -105,7 +105,7 @@ struct vport *ovs_netdev_link(struct vport *vport, const char *name)
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;