--- zzzz-none-000/linux-4.4.271/net/8021q/vlan_core.c	2021-06-03 06:22:09.000000000 +0000
+++ hawkeye-5590-750/linux-4.4.271/net/8021q/vlan_core.c	2023-04-19 10:22:30.000000000 +0000
@@ -5,6 +5,14 @@
 #include <linux/export.h>
 #include "vlan.h"
 
+#if defined(CONFIG_LTQ_ETH_OAM) || defined(CONFIG_LTQ_ETH_OAM_MODULE)
+/* Support for ethernet OAM with VLAN */
+#include <avm/net/ltq_eth_oam_handler.h>
+
+struct net_device * (*fp_ltq_eth_oam_dev)(void)=NULL;
+EXPORT_SYMBOL(fp_ltq_eth_oam_dev);
+#endif
+
 bool vlan_do_receive(struct sk_buff **skbp)
 {
 	struct sk_buff *skb = *skbp;
@@ -61,9 +69,34 @@
 		rx_stats->rx_multicast++;
 	u64_stats_update_end(&rx_stats->syncp);
 
+#if IS_ENABLED(CONFIG_LTQ_ETH_OAM)
+	if (skb->protocol == ETH_P_CFM && fp_ltq_eth_oam_dev != NULL)
+		skb->dev = fp_ltq_eth_oam_dev();
+#endif
+
 	return true;
 }
 
+/* Update the VLAN device with statistics from network offload engines */
+void __vlan_dev_update_accel_stats(struct net_device *dev,
+				   struct rtnl_link_stats64 *nlstats)
+{
+	struct vlan_pcpu_stats *stats;
+
+	if (!is_vlan_dev(dev))
+		return;
+
+	stats = this_cpu_ptr(vlan_dev_priv(dev)->vlan_pcpu_stats);
+
+	u64_stats_update_begin(&stats->syncp);
+	stats->rx_packets += nlstats->rx_packets;
+	stats->rx_bytes += nlstats->rx_bytes;
+	stats->tx_packets += nlstats->tx_packets;
+	stats->tx_bytes += nlstats->tx_bytes;
+	u64_stats_update_end(&stats->syncp);
+}
+EXPORT_SYMBOL(__vlan_dev_update_accel_stats);
+
 /* Must be invoked with rcu_read_lock. */
 struct net_device *__vlan_find_dev_deep_rcu(struct net_device *dev,
 					__be16 vlan_proto, u16 vlan_id)
@@ -102,6 +135,12 @@
 }
 EXPORT_SYMBOL(vlan_dev_real_dev);
 
+struct net_device *vlan_dev_next_dev(const struct net_device *dev)
+{
+	return vlan_dev_priv(dev)->real_dev;
+}
+EXPORT_SYMBOL(vlan_dev_next_dev);
+
 u16 vlan_dev_vlan_id(const struct net_device *dev)
 {
 	return vlan_dev_priv(dev)->vlan_id;