--- zzzz-none-000/linux-5.4.213/include/net/xfrm.h	2022-09-15 10:04:56.000000000 +0000
+++ alder-5690pro-762/linux-5.4.213/include/net/xfrm.h	2024-08-14 09:02:08.000000000 +0000
@@ -259,6 +259,21 @@
 	void			*data;
 };
 
+enum xfrm_event_type {
+	XFRM_EVENT_NONE = 0,
+	XFRM_EVENT_STATE_ADD,
+	XFRM_EVENT_STATE_DEL,
+	XFRM_EVENT_MAX
+};
+
+struct xfrm_event_notifier {
+	struct list_head list;
+	void (*state_notify)(struct xfrm_state *x, enum xfrm_event_type event);
+};
+
+int xfrm_event_register_notifier(struct net *net, struct xfrm_event_notifier *event);
+void xfrm_event_unregister_notifier(struct net *net, struct xfrm_event_notifier *event);
+
 static inline struct net *xs_net(struct xfrm_state *x)
 {
 	return read_pnet(&x->xs_net);
@@ -267,6 +282,7 @@
 /* xflags - make enum if more show up */
 #define XFRM_TIME_DEFER	1
 #define XFRM_SOFT_EXPIRE 2
+#define XFRM_STATE_OFFLOAD_NSS 4
 
 enum {
 	XFRM_STATE_VOID,
@@ -374,6 +390,7 @@
 int xfrm_state_unregister_afinfo(struct xfrm_state_afinfo *afinfo);
 struct xfrm_state_afinfo *xfrm_state_get_afinfo(unsigned int family);
 struct xfrm_state_afinfo *xfrm_state_afinfo_get_rcu(unsigned int family);
+struct xfrm_state_afinfo *xfrm_state_update_afinfo(unsigned int family, struct xfrm_state_afinfo *new);
 
 struct xfrm_input_afinfo {
 	unsigned int		family;
@@ -404,6 +421,8 @@
 	int			(*reject)(struct xfrm_state *, struct sk_buff *,
 					  const struct flowi *);
 	int			(*hdr_offset)(struct xfrm_state *, struct sk_buff *, u8 **);
+	/* Estimate maximal size of result of transformation of a dgram */
+	u32			(*get_mtu)(struct xfrm_state *, int size);
 };
 
 int xfrm_register_type(const struct xfrm_type *type, unsigned short family);
@@ -1501,6 +1520,7 @@
 					    const xfrm_address_t *saddr,
 					    u8 proto,
 					    unsigned short family);
+void xfrm_state_change_notify(struct xfrm_state *x, enum xfrm_event_type);
 #ifdef CONFIG_XFRM_SUB_POLICY
 void xfrm_tmpl_sort(struct xfrm_tmpl **dst, struct xfrm_tmpl **src, int n,
 		    unsigned short family);
@@ -1680,6 +1700,7 @@
 	      xfrm_address_t *addr);
 
 void xfrm_input_init(void);
+void xfrm_output_init(void);
 int xfrm_parse_spi(struct sk_buff *skb, u8 nexthdr, __be32 *spi, __be32 *seq);
 
 void xfrm_probe_algs(void);