+#define MLX5_DBR_SIZE RTE_CACHE_LINE_SIZE
+#define MLX5_DBR_PER_PAGE 64
+/* Must be >= CHAR_BIT * sizeof(uint64_t) */
+#define MLX5_DBR_PAGE_SIZE (MLX5_DBR_PER_PAGE * MLX5_DBR_SIZE)
+/* Page size must be >= 512. */
+#define MLX5_DBR_BITMAP_SIZE (MLX5_DBR_PER_PAGE / (CHAR_BIT * sizeof(uint64_t)))
+
+struct mlx5_devx_dbr_page {
+ /* Door-bell records, must be first member in structure. */
+ uint8_t dbrs[MLX5_DBR_PAGE_SIZE];
+ LIST_ENTRY(mlx5_devx_dbr_page) next; /* Pointer to the next element. */
+ void *umem;
+ uint32_t dbr_count; /* Number of door-bell records in use. */
+ /* 1 bit marks matching door-bell is in use. */
+ uint64_t dbr_bitmap[MLX5_DBR_BITMAP_SIZE];
+};
+
+/* devX creation object */
+struct mlx5_devx_obj {
+ void *obj; /* The DV object. */
+ int id; /* The object ID. */
+};
+
+/* UMR memory buffer used to define 1 entry in indirect mkey. */
+struct mlx5_klm {
+ uint32_t byte_count;
+ uint32_t mkey;
+ uint64_t address;
+};
+
+LIST_HEAD(mlx5_dbr_page_list, mlx5_devx_dbr_page);
+