diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/netdevice.h | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index e15367373f7c..47417b2d48a4 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -2561,7 +2561,14 @@ struct net_device { * Also protects some fields in: * struct napi_struct, struct netdev_queue, struct netdev_rx_queue * - * Ordering: take after rtnl_lock. + * Ordering: + * + * - take after rtnl_lock + * + * - for the case of netdev queue leasing, the netdev-scope lock is + * taken for both the virtual and the physical device; to prevent + * deadlocks, the virtual device's lock must always be acquired + * before the physical device's (see netdev_nl_queue_create_doit) */ struct mutex lock; @@ -3413,6 +3420,8 @@ static inline int dev_direct_xmit(struct sk_buff *skb, u16 queue_id) int register_netdevice(struct net_device *dev); void unregister_netdevice_queue(struct net_device *dev, struct list_head *head); void unregister_netdevice_many(struct list_head *head); +bool unregister_netdevice_queued(const struct net_device *dev); + static inline void unregister_netdevice(struct net_device *dev) { unregister_netdevice_queue(dev, NULL); |