[VLAN]: Fix link state propagation
When the queue of the underlying device is stopped at initialization time
or the device is marked "not present", the state will be propagated to the
vlan device and never change. Based on an analysis by Patrick McHardy.
Signed-off-by: Stefan Rompf <stefan@loplof.de>
ACKed-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index 0ade0c63..18fcb9f 100644
--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -67,10 +67,6 @@
.func = vlan_skb_recv, /* VLAN receive method */
};
-/* Bits of netdev state that are propagated from real device to virtual */
-#define VLAN_LINK_STATE_MASK \
- ((1<<__LINK_STATE_PRESENT)|(1<<__LINK_STATE_NOCARRIER)|(1<<__LINK_STATE_DORMANT))
-
/* End of global variables definitions. */
/*
@@ -479,7 +475,9 @@
new_dev->flags = real_dev->flags;
new_dev->flags &= ~IFF_UP;
- new_dev->state = real_dev->state & ~(1<<__LINK_STATE_START);
+ new_dev->state = (real_dev->state & ((1<<__LINK_STATE_NOCARRIER) |
+ (1<<__LINK_STATE_DORMANT))) |
+ (1<<__LINK_STATE_PRESENT);
/* need 4 bytes for extra VLAN header info,
* hope the underlying device can handle it.