1 files changed, 52 insertions, 0 deletions
diff --git a/src/vlib/stats/shared.h b/src/vlib/stats/shared.h
new file mode 100644
index 00000000000..d2d5d49cc54
--- /dev/null
+++ b/src/vlib/stats/shared.h
@@ -0,0 +1,52 @@
+/* SPDX-License-Identifier: Apache-2.0
+ * Copyright(c) 2022 Cisco Systems, Inc.
+ */
+
+#ifndef included_stat_segment_shared_h
+#define included_stat_segment_shared_h
+
+typedef enum
+{
+  STAT_DIR_TYPE_ILLEGAL = 0,
+  STAT_DIR_TYPE_SCALAR_INDEX,
+  STAT_DIR_TYPE_COUNTER_VECTOR_SIMPLE,
+  STAT_DIR_TYPE_COUNTER_VECTOR_COMBINED,
+  STAT_DIR_TYPE_ERROR_INDEX,
+  STAT_DIR_TYPE_NAME_VECTOR,
+  STAT_DIR_TYPE_EMPTY,
+  STAT_DIR_TYPE_SYMLINK,
+} stat_directory_type_t;
+
+typedef struct
+{
+  stat_directory_type_t type;
+  union
+  {
+    struct
+    {
+      uint32_t index1;
+      uint32_t index2;
+    };
+    uint64_t index;
+    uint64_t value;
+    void *data;
+    uint8_t **string_vector;
+  };
+#define VLIB_STATS_MAX_NAME_SZ 128
+  char name[VLIB_STATS_MAX_NAME_SZ];
+} vlib_stats_entry_t;
+
+/*
+ * Shared header first in the shared memory segment.
+ */
+typedef struct
+{
+  uint64_t version;
+  void *base;
+  volatile uint64_t epoch;
+  volatile uint64_t in_progress;
+  volatile vlib_stats_entry_t *directory_vector;
+  volatile uint64_t **error_vector;
+} vlib_stats_shared_header_t;
+
+#endif /* included_stat_segment_shared_h */