1 files changed, 106 insertions, 0 deletions
diff --git a/src/plugins/auto_sdl/auto_sdl.h b/src/plugins/auto_sdl/auto_sdl.h
new file mode 100644
index 00000000000..c74a48b642b
--- /dev/null
+++ b/src/plugins/auto_sdl/auto_sdl.h
@@ -0,0 +1,106 @@
+/* SPDX-License-Identifier: Apache-2.0
+ * Copyright (c) 2024 Cisco Systems, Inc.
+ */
+
+#ifndef __AUTO_SDL_H__
+#define __AUTO_SDL_H__
+
+#include <vlib/unix/plugin.h>
+#include <vnet/fib/fib_types.h>
+#include <vnet/dpo/dpo.h>
+#include <vppinfra/tw_timer_4t_3w_256sl.h>
+
+typedef struct
+{
+  CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
+  fib_prefix_t prefix;
+  u32 action_index;
+  u32 fib_index;
+  u8 *tag;
+
+  u32 last_updated;
+  u32 tw_handle;
+  u32 counter;
+  u8 sdl_added;
+} auto_sdl_mapping_t;
+
+#define AUTO_SDL_REMOVE_TIMEOUT 300 /* 5 minutes */
+#define AUTO_SDL_THRESHOLD	5   /* 5 times */
+
+typedef struct auto_sdl_per_fib_
+{
+  uword *auto_sdl_fib_pool;
+} auto_sdl_per_fib_t;
+
+typedef struct auto_sdl_main
+{
+  u32 remove_timeout;
+  u32 threshold;
+  auto_sdl_mapping_t *auto_sdl_pool;
+  clib_spinlock_t spinlock;
+  TWT (tw_timer_wheel) tw_wheel;
+  u32 pid;
+  auto_sdl_per_fib_t *asdl_pool;
+  u8 inited;
+  u8 auto_sdl_enable;
+} auto_sdl_main_t;
+
+typedef struct _auto_sdl_config_args_t
+{
+  u32 threshold;
+  u32 remove_timeout;
+  i8 enable;
+} auto_sdl_config_args_t;
+
+clib_error_t *auto_sdl_config (auto_sdl_config_args_t *args);
+
+typedef uword (*auto_sdl_pool_size_fn_t) (void);
+typedef int (*auto_sdl_track_prefix_fn_t) (auto_sdl_track_prefix_args_t *args);
+typedef clib_error_t *(*auto_sdl_config_fn_t) (auto_sdl_config_args_t *args);
+
+#define foreach_auto_sdl_plugin_exported_method_name                          \
+  _ (track_prefix)                                                            \
+  _ (pool_size)                                                               \
+  _ (config)
+
+#define _(name) auto_sdl_##name##_fn_t name;
+typedef struct
+{
+  void *p_asdl_main;
+  foreach_auto_sdl_plugin_exported_method_name
+} auto_sdl_plugin_methods_t;
+#undef _
+
+#define AUTO_SDL_LOAD_SYMBOL_FROM_PLUGIN_TO(p, s, st)                         \
+  ({                                                                          \
+    st = vlib_get_plugin_symbol (p, #s);                                      \
+    if (!st)                                                                  \
+      return clib_error_return (0, "Plugin %s and/or symbol %s not found.",   \
+				p, #s);                                       \
+  })
+
+typedef clib_error_t *(*auto_sdl_plugin_methods_vtable_init_fn_t) (
+  auto_sdl_plugin_methods_t *m);
+
+__clib_export clib_error_t *
+auto_sdl_plugin_methods_vtable_init (auto_sdl_plugin_methods_t *m);
+
+static inline clib_error_t *
+auto_sdl_plugin_exports_init (auto_sdl_plugin_methods_t *m)
+{
+  auto_sdl_plugin_methods_vtable_init_fn_t mvi;
+
+  AUTO_SDL_LOAD_SYMBOL_FROM_PLUGIN_TO (
+    "auto_sdl_plugin.so", auto_sdl_plugin_methods_vtable_init, mvi);
+
+  return (mvi (m));
+}
+
+#endif /* __AUTO_SDL_H__ */
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */