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path: root/drivers/net/netconsole.c
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Diffstat (limited to 'drivers/net/netconsole.c')
-rw-r--r--drivers/net/netconsole.c32
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/net/netconsole.c b/drivers/net/netconsole.c
index be15ca6205a8..55570988250b 100644
--- a/drivers/net/netconsole.c
+++ b/drivers/net/netconsole.c
@@ -80,6 +80,33 @@ static struct netconsole_target default_target = {
},
};
+/* Handle network interface device notifications */
+static int netconsole_netdev_event(struct notifier_block *this,
+ unsigned long event,
+ void *ptr)
+{
+ struct net_device *dev = ptr;
+ struct netconsole_target *nt = &default_target;
+
+ if (nt->np.dev == dev) {
+ switch (event) {
+ case NETDEV_CHANGEADDR:
+ memcpy(nt->np.local_mac, dev->dev_addr, ETH_ALEN);
+ break;
+
+ case NETDEV_CHANGENAME:
+ strlcpy(nt->np.dev_name, dev->name, IFNAMSIZ);
+ break;
+ }
+ }
+
+ return NOTIFY_DONE;
+}
+
+static struct notifier_block netconsole_netdev_notifier = {
+ .notifier_call = netconsole_netdev_event,
+};
+
static void write_msg(struct console *con, const char *msg, unsigned int len)
{
int frag, left;
@@ -122,6 +149,10 @@ static int __init init_netconsole(void)
if (err)
goto out;
+ err = register_netdevice_notifier(&netconsole_netdev_notifier);
+ if (err)
+ goto out;
+
register_console(&netconsole);
printk(KERN_INFO "netconsole: network logging started\n");
@@ -134,6 +165,7 @@ static void __exit cleanup_netconsole(void)
struct netconsole_target *nt = &default_target;
unregister_console(&netconsole);
+ unregister_netdevice_notifier(&netconsole_netdev_notifier);
netpoll_cleanup(&nt->np);
}