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[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>
This commit is contained in:
Stefan Rompf 2006-07-24 13:52:13 -07:00 committed by David S. Miller
parent a922ba5510
commit 6c753c3d3b
1 changed files with 3 additions and 5 deletions
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8
net/8021q/vlan.c
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@ -67,10 +67,6 @@ static struct packet_type vlan_packet_type = {
.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 @@ static struct net_device *register_vlan_device(const char *eth_IF_name,
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.