diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/netconsole.c | 32 |
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); } |