net: pass info struct via netdevice notifier

So far, only net_device * could be passed along with netdevice notifier
event. This patch provides a possibility to pass custom structure
able to provide info that event listener needs to know.

Signed-off-by: Jiri Pirko <jiri@resnulli.us>

v2->v3: fix typo on simeth
	shortened dev_getter
	shortened notifier_info struct name
v1->v2: fix notifier_call parameter in call_netdevice_notifier()
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 3 deletions

diff --git a/drivers/net/netconsole.c b/drivers/net/netconsole.c
index 59ac143dec25..1d1d0a12765c 100644
--- a/drivers/net/netconsole.c
+++ b/drivers/net/netconsole.c
@@ -653,12 +653,11 @@ static struct configfs_subsystem netconsole_subsys = {
 
 /* Handle network interface device notifications */
 static int netconsole_netdev_event(struct notifier_block *this,
-                                   unsigned long event,
-                                   void *ptr)
+                                   unsigned long event, void *ptr)
 {
         unsigned long flags;
         struct netconsole_target *nt;
-        struct net_device *dev = ptr;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
         bool stopped = false;
 
         if (!(event == NETDEV_CHANGENAME || event == NETDEV_UNREGISTER ||