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authorJiri Pirko <jiri@mellanox.com>2015-12-03 14:12:11 +0300
committerDavid S. Miller <davem@davemloft.net>2015-12-03 19:49:25 +0300
commit29bf24afb29042f568fa67b1b0eee46796725ed2 (patch)
tree865e593be107511f4032b41c09fd252e317cd540 /net/core
parent6dffb0447c25476f499d205dfceb1972e8dae919 (diff)
downloadlinux-29bf24afb29042f568fa67b1b0eee46796725ed2.tar.xz
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>
Diffstat (limited to 'net/core')
-rw-r--r--net/core/dev.c11
1 files changed, 7 insertions, 4 deletions
diff --git a/net/core/dev.c b/net/core/dev.c
index 27d052bb78bc..8ed886663c6d 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -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);