diff options
Diffstat (limited to 'net/switchdev/switchdev.c')
| -rw-r--r-- | net/switchdev/switchdev.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/net/switchdev/switchdev.c b/net/switchdev/switchdev.c index 055453d48668..a8dbe8001e46 100644 --- a/net/switchdev/switchdev.c +++ b/net/switchdev/switchdev.c @@ -15,6 +15,7 @@ #include <linux/mutex.h> #include <linux/notifier.h> #include <linux/netdevice.h> +#include <linux/rtnetlink.h> #include <net/ip_fib.h> #include <net/switchdev.h> @@ -64,7 +65,6 @@ int netdev_switch_port_stp_update(struct net_device *dev, u8 state) } EXPORT_SYMBOL_GPL(netdev_switch_port_stp_update); -static DEFINE_MUTEX(netdev_switch_mutex); static RAW_NOTIFIER_HEAD(netdev_switch_notif_chain); /** @@ -79,9 +79,9 @@ int register_netdev_switch_notifier(struct notifier_block *nb) { int err; - mutex_lock(&netdev_switch_mutex); + rtnl_lock(); err = raw_notifier_chain_register(&netdev_switch_notif_chain, nb); - mutex_unlock(&netdev_switch_mutex); + rtnl_unlock(); return err; } EXPORT_SYMBOL_GPL(register_netdev_switch_notifier); @@ -97,9 +97,9 @@ int unregister_netdev_switch_notifier(struct notifier_block *nb) { int err; - mutex_lock(&netdev_switch_mutex); + rtnl_lock(); err = raw_notifier_chain_unregister(&netdev_switch_notif_chain, nb); - mutex_unlock(&netdev_switch_mutex); + rtnl_unlock(); return err; } EXPORT_SYMBOL_GPL(unregister_netdev_switch_notifier); @@ -113,16 +113,17 @@ EXPORT_SYMBOL_GPL(unregister_netdev_switch_notifier); * Call all network notifier blocks. This should be called by driver * when it needs to propagate hardware event. * Return values are same as for atomic_notifier_call_chain(). + * rtnl_lock must be held. */ int call_netdev_switch_notifiers(unsigned long val, struct net_device *dev, struct netdev_switch_notifier_info *info) { int err; + ASSERT_RTNL(); + info->dev = dev; - mutex_lock(&netdev_switch_mutex); err = raw_notifier_call_chain(&netdev_switch_notif_chain, val, info); - mutex_unlock(&netdev_switch_mutex); return err; } EXPORT_SYMBOL_GPL(call_netdev_switch_notifiers); |