--- zzzz-none-000/linux-5.4.213/include/net/netfilter/nf_flow_table.h	2022-09-15 10:04:56.000000000 +0000
+++ alder-5690pro-762/linux-5.4.213/include/net/netfilter/nf_flow_table.h	2024-08-14 09:02:08.000000000 +0000
@@ -21,11 +21,17 @@
 	struct module			*owner;
 };
 
+enum nf_flowtable_flags {
+	NF_FLOWTABLE_F_HW		= 0x1,
+};
+
 struct nf_flowtable {
 	struct list_head		list;
 	struct rhashtable		rhashtable;
 	const struct nf_flowtable_type	*type;
+	u32				flags;
 	struct delayed_work		gc_work;
+	possible_net_t			ft_net;
 };
 
 enum flow_offload_tuple_dir {
@@ -68,16 +74,36 @@
 #define FLOW_OFFLOAD_DNAT	0x2
 #define FLOW_OFFLOAD_DYING	0x4
 #define FLOW_OFFLOAD_TEARDOWN	0x8
+#define FLOW_OFFLOAD_HW		0x10
+#define FLOW_OFFLOAD_KEEP	0x20
 
 struct flow_offload {
 	struct flow_offload_tuple_rhash		tuplehash[FLOW_OFFLOAD_DIR_MAX];
 	u32					flags;
+	u32					timeout;
 	union {
 		/* Your private driver data here. */
-		u32		timeout;
+		void *priv;
 	};
 };
 
+#define FLOW_OFFLOAD_PATH_ETHERNET	BIT(0)
+#define FLOW_OFFLOAD_PATH_VLAN		BIT(1)
+#define FLOW_OFFLOAD_PATH_PPPOE		BIT(2)
+#define FLOW_OFFLOAD_PATH_DSA		BIT(3)
+
+struct flow_offload_hw_path {
+	struct net_device *dev;
+	u32 flags;
+
+	u8 eth_src[ETH_ALEN];
+	u8 eth_dest[ETH_ALEN];
+	u16 vlan_proto;
+	u16 vlan_id;
+	u16 pppoe_sid;
+	u16 dsa_port;
+};
+
 #define NF_FLOW_TIMEOUT (30 * HZ)
 
 struct nf_flow_route {
@@ -104,6 +130,10 @@
 	flow->flags |= FLOW_OFFLOAD_DYING;
 }
 
+int nf_flow_table_iterate(struct nf_flowtable *flow_table,
+                      void (*iter)(struct flow_offload *flow, void *data),
+                      void *data);
+
 int nf_flow_snat_port(const struct flow_offload *flow,
 		      struct sk_buff *skb, unsigned int thoff,
 		      u8 protocol, enum flow_offload_tuple_dir dir);
@@ -120,6 +150,24 @@
 unsigned int nf_flow_offload_ipv6_hook(void *priv, struct sk_buff *skb,
 				       const struct nf_hook_state *state);
 
+void nf_flow_offload_hw_add(struct net *net, struct flow_offload *flow,
+			    struct nf_conn *ct);
+void nf_flow_offload_hw_del(struct net *net, struct flow_offload *flow);
+
+struct nf_flow_table_hw {
+	struct module	*owner;
+	void		(*add)(struct net *net, struct flow_offload *flow,
+			       struct nf_conn *ct);
+	void		(*del)(struct net *net, struct flow_offload *flow);
+};
+
+int nf_flow_table_hw_register(const struct nf_flow_table_hw *offload);
+void nf_flow_table_hw_unregister(const struct nf_flow_table_hw *offload);
+
+void nf_flow_table_acct(struct flow_offload *flow, struct sk_buff *skb, int dir);
+
+extern struct work_struct nf_flow_offload_hw_work;
+
 #define MODULE_ALIAS_NF_FLOWTABLE(family)	\
 	MODULE_ALIAS("nf-flowtable-" __stringify(family))