#define CONTAINER_OF(POINTER, STRUCT, MEMBER) \
((STRUCT *) (void *) ((char *) (POINTER) - offsetof (STRUCT, MEMBER)))
+/* Given POINTER, the address of the given MEMBER within an object of the type
+ * that that OBJECT points to, returns OBJECT as a "void *" pointer. OBJECT
+ * must be an lvalue.
+ *
+ * This is the same as CONTAINER_OF except that it infers the structure type
+ * from the type of '*OBJECT'. */
+#define OBJECT_CONTAINING(POINTER, OBJECT, MEMBER) \
+ ((void *) ((char *) (POINTER) \
+ - ((char *) &(OBJECT)->MEMBER - (char *) (OBJECT))))
+
#ifdef __cplusplus
extern "C" {
#endif
void set_program_name(const char *);
-void ovs_print_version(char *date, char *time,
+void ovs_print_version(char *date, char *time,
uint8_t min_ofp, uint8_t max_ofp);
#define OVS_PRINT_VERSION(min_ofp, max_ofp) \
ovs_print_version(__DATE__, __TIME__, (min_ofp), (max_ofp))