--- zzzz-none-000/linux-4.4.271/include/net/neighbour.h	2021-06-03 06:22:09.000000000 +0000
+++ hawkeye-5590-750/linux-4.4.271/include/net/neighbour.h	2023-04-19 10:22:30.000000000 +0000
@@ -232,6 +232,11 @@
 	return p->tbl->family;
 }
 
+struct neigh_mac_update {
+	unsigned char old_mac[ALIGN(MAX_ADDR_LEN, sizeof(unsigned long))];
+	unsigned char update_mac[ALIGN(MAX_ADDR_LEN, sizeof(unsigned long))];
+};
+
 #define NEIGH_PRIV_ALIGN	sizeof(long long)
 #define NEIGH_ENTRY_SIZE(size)	ALIGN((size), NEIGH_PRIV_ALIGN)
 
@@ -263,8 +268,10 @@
 	const u32 *n32 = (const u32 *)n->primary_key;
 	const u32 *p32 = pkey;
 
-	return ((n32[0] ^ p32[0]) | (n32[1] ^ p32[1]) |
-		(n32[2] ^ p32[2]) | (n32[3] ^ p32[3])) == 0;
+	return ((n32[0] ^ net_hdr_word(&p32[0])) |
+		(n32[1] ^ net_hdr_word(&p32[1])) |
+		(n32[2] ^ net_hdr_word(&p32[2])) |
+		(n32[3] ^ net_hdr_word(&p32[3]))) == 0;
 }
 
 static inline struct neighbour *___neigh_lookup_noref(
@@ -361,6 +368,9 @@
 void pneigh_for_each(struct neigh_table *tbl,
 		     void (*cb)(struct pneigh_entry *));
 
+extern void neigh_mac_update_register_notify(struct notifier_block *nb);
+extern void neigh_mac_update_unregister_notify(struct notifier_block *nb);
+
 struct neigh_seq_state {
 	struct seq_net_private p;
 	struct neigh_table *tbl;