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, 4 deletions

diff --git a/net/atm/mpc.c b/net/atm/mpc.c
index d4cc1be5c364..3af12755cd04 100644
--- a/net/atm/mpc.c
+++ b/net/atm/mpc.c
@@ -998,14 +998,12 @@ int msg_to_mpoad(struct k_message *mesg, struct mpoa_client *mpc)
 }
 
 static int mpoa_event_listener(struct notifier_block *mpoa_notifier,
-                               unsigned long event, void *dev_ptr)
+                               unsigned long event, void *ptr)
 {
-        struct net_device *dev;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
         struct mpoa_client *mpc;
         struct lec_priv *priv;
 
-        dev = dev_ptr;
-
         if (!net_eq(dev_net(dev), &init_net))
                 return NOTIFY_DONE;