-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,36) || \
- defined HAVE_RHEL_OVS_HOOK
-static int netdev_init(void) { return 0; }
-static void netdev_exit(void) { }
-#else
-static int port_count;
-
-static void netdev_init(void)
-{
- port_count++;
- if (port_count > 1)
- return;
-
- /* Hook into callback used by the bridge to intercept packets.
- * Parasites we are. */
- br_handle_frame_hook = netdev_frame_hook;
-
- return;
-}
-
-static void netdev_exit(void)
-{
- port_count--;
- if (port_count > 0)
- return;
-
- br_handle_frame_hook = NULL;
-}
-#endif
-