diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/8021q/vlan.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/net/8021q/vlan.h b/net/8021q/vlan.h index 9da07e30d1a2..b132f542b44b 100644 --- a/net/8021q/vlan.h +++ b/net/8021q/vlan.h @@ -74,6 +74,18 @@ static inline struct vlan_dev_info *vlan_dev_info(const struct net_device *dev) return netdev_priv(dev); } +/* Must be invoked with rcu_read_lock or with RTNL. */ +static inline struct net_device *vlan_find_dev(struct net_device *real_dev, + u16 vlan_id) +{ + struct vlan_group *grp = rcu_dereference_rtnl(real_dev->vlgrp); + + if (grp) + return vlan_group_get_device(grp, vlan_id); + + return NULL; +} + /* found in vlan_dev.c */ void vlan_dev_set_ingress_priority(const struct net_device *dev, u32 skb_prio, u16 vlan_prio); |