in_dev_get
ind = in_dev_get(dev->rdev.lldi.ports[0]);
idev = in_dev_get(ip_dev);
in_dev = in_dev_get(dev);
indev = in_dev_get(dev);
indev = in_dev_get(dev);
struct in_device *in_dev = in_dev_get(br->dev);
struct in_device *in_dev = in_dev_get(br->dev);
in_dev = in_dev_get(dev);