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-rw-r--r--net/8021q/vlan.h31
1 files changed, 31 insertions, 0 deletions
diff --git a/net/8021q/vlan.h b/net/8021q/vlan.h
index 9da07e30d1a..9fd45f3571f 100644
--- a/net/8021q/vlan.h
+++ b/net/8021q/vlan.h
@@ -74,6 +74,37 @@ static inline struct vlan_dev_info *vlan_dev_info(const struct net_device *dev)
return netdev_priv(dev);
}
+static inline struct net_device *vlan_group_get_device(struct vlan_group *vg,
+ u16 vlan_id)
+{
+ struct net_device **array;
+ array = vg->vlan_devices_arrays[vlan_id / VLAN_GROUP_ARRAY_PART_LEN];
+ return array ? array[vlan_id % VLAN_GROUP_ARRAY_PART_LEN] : NULL;
+}
+
+static inline void vlan_group_set_device(struct vlan_group *vg,
+ u16 vlan_id,
+ struct net_device *dev)
+{
+ struct net_device **array;
+ if (!vg)
+ return;
+ array = vg->vlan_devices_arrays[vlan_id / VLAN_GROUP_ARRAY_PART_LEN];
+ array[vlan_id % VLAN_GROUP_ARRAY_PART_LEN] = 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);