+static void
+device_merge_settings(struct device *dev, struct device_settings *n)
+{
+ struct device_settings *os = &dev->orig_settings;
+ struct device_settings *s = &dev->settings;
+
+ memset(n, 0, sizeof(*n));
+ n->mtu = s->flags & DEV_OPT_MTU ? s->mtu : os->mtu;
+ n->txqueuelen = s->flags & DEV_OPT_TXQUEUELEN ?
+ s->txqueuelen : os->txqueuelen;
+ memcpy(n->macaddr,
+ (s->flags & DEV_OPT_MACADDR ? s->macaddr : os->macaddr),
+ sizeof(n->macaddr));
+ n->flags = s->flags | os->flags;
+}
+