lib: add NOTIF message ops (notification, replace, delete, patch)

- needed for supporting backend datastore notifications

Signed-off-by: Christian Hopps <chopps@labn.net>

2 files changed, 26 insertions, 3 deletions

diff --git a/lib/mgmt_be_client.h b/lib/mgmt_be_client.h
index 6ed8c2a39f..a3e3896d52 100644
--- a/lib/mgmt_be_client.h
+++ b/lib/mgmt_be_client.h
@@ -112,6 +112,22 @@ extern struct mgmt_be_client *
 mgmt_be_client_create(const char *name, struct mgmt_be_client_cbs *cbs,
 		      uintptr_t user_data, struct event_loop *event_loop);
 
+
+/**
+ * mgmt_be_send_ds_delete_notification() - Send a datastore delete notification.
+ */
+extern int mgmt_be_send_ds_delete_notification(const char *path);
+
+/**
+ * mgmt_be_send_ds_patch_notification() - Send a datastore YANG patch notification.
+ */
+extern int mgmt_be_send_ds_patch_notification(const char *path, const struct lyd_node *tree);
+
+/**
+ * mgmt_be_send_ds_replace_notification() - Send a datastore replace notification.
+ */
+extern int mgmt_be_send_ds_replace_notification(const char *path, const struct lyd_node *tree);
+
 /*
  * Initialize library vty (adds debug support).
  *
diff --git a/lib/mgmt_msg_native.h b/lib/mgmt_msg_native.h
index 587a002801..4076977a22 100644
--- a/lib/mgmt_msg_native.h
+++ b/lib/mgmt_msg_native.h
@@ -323,22 +323,29 @@ _Static_assert(sizeof(struct mgmt_msg_get_data) ==
 		       offsetof(struct mgmt_msg_get_data, xpath),
 	       "Size mismatch");
 
+
+#define NOTIFY_OP_NOTIFICATION 0
+#define NOTIFY_OP_DS_REPLACE   1
+#define NOTIFY_OP_DS_DELETE    2
+#define NOTIFY_OP_DS_PATCH     3
+
 /**
  * struct mgmt_msg_notify_data - Message carrying notification data.
  *
  * @result_type: ``LYD_FORMAT`` for format of the @result value.
  * @data: The xpath string of the notification followed by the tree data in
  *        @result_type format.
+ * @op: notify operation type.
  */
 struct mgmt_msg_notify_data {
 	struct mgmt_msg_header;
 	uint8_t result_type;
-	uint8_t resv2[7];
+	uint8_t op;
+	uint8_t resv2[6];
 
 	alignas(8) char data[];
 };
-_Static_assert(sizeof(struct mgmt_msg_notify_data) ==
-		       offsetof(struct mgmt_msg_notify_data, data),
+_Static_assert(sizeof(struct mgmt_msg_notify_data) == offsetof(struct mgmt_msg_notify_data, data),
 	       "Size mismatch");
 
 #define EDIT_FLAG_IMPLICIT_LOCK	  0x01