/* user needs to watch new fd or stop watching fd that is about to be closed.
control fd will be modified during connection establishment to minimize CPU usage */
int
-control_fd_update (int fd, uint8_t events)
+control_fd_update (int fd, uint8_t events, void *ctx)
{
/* convert memif event definitions to epoll events */
if (events & MEMIF_FD_EVENT_DEL)