set_need_watch
if (!intf->handlers->set_need_watch)
intf->handlers->set_need_watch(intf->send_info,
if (!intf->handlers->set_need_watch)
intf->handlers->set_need_watch(intf->send_info,
.set_need_watch = set_need_watch,
ssif_info->handlers.set_need_watch = ssif_set_need_watch;
void (*set_need_watch)(void *send_info, unsigned int watch_mask);