--- zzzz-none-000/linux-4.4.271/include/linux/if_vlan.h	2021-06-03 06:22:09.000000000 +0000
+++ hawkeye-5590-750/linux-4.4.271/include/linux/if_vlan.h	2023-04-19 10:22:30.000000000 +0000
@@ -69,6 +69,7 @@
 #define VLAN_PRIO_SHIFT		13
 #define VLAN_CFI_MASK		0x1000 /* Canonical Format Indicator */
 #define VLAN_TAG_PRESENT	VLAN_CFI_MASK
+#define VLAN_DEI_BIT		BIT(12)
 #define VLAN_VID_MASK		0x0fff /* VLAN Identifier */
 #define VLAN_N_VID		4096
 
@@ -110,7 +111,13 @@
 
 extern struct net_device *__vlan_find_dev_deep_rcu(struct net_device *real_dev,
 					       __be16 vlan_proto, u16 vlan_id);
+extern void __vlan_dev_update_accel_stats(struct net_device *dev,
+				    struct rtnl_link_stats64 *stats);
+
+extern struct net_device *__vlan_find_dev_deep(struct net_device *real_dev,
+					       __be16 vlan_proto, u16 vlan_id);
 extern struct net_device *vlan_dev_real_dev(const struct net_device *dev);
+extern struct net_device *vlan_dev_next_dev(const struct net_device *dev);
 extern u16 vlan_dev_vlan_id(const struct net_device *dev);
 extern __be16 vlan_dev_vlan_proto(const struct net_device *dev);
 
@@ -206,6 +213,12 @@
 	return vlan_dev_priv(dev)->nest_level;
 }
 #else
+static inline void __vlan_dev_update_accel_stats(struct net_device *dev,
+					   struct rtnl_link_stats64 *stats)
+{
+
+}
+
 static inline struct net_device *
 __vlan_find_dev_deep_rcu(struct net_device *real_dev,
 		     __be16 vlan_proto, u16 vlan_id)
@@ -412,6 +425,9 @@
 					  __be16 vlan_proto, u16 vlan_tci)
 {
 	skb->vlan_proto = vlan_proto;
+#ifdef CONFIG_AVM_WAR_SKB_HAS_VLAN_DEI
+	skb->vlan_dei = !!(vlan_tci & VLAN_DEI_BIT);
+#endif
 	skb->vlan_tci = VLAN_TAG_PRESENT | vlan_tci;
 }