Re: 2.6.37 regression: adding main interface to a bridge breaks vlan interface RX

On 17/01/11 16:00, Ben Hutchings wrote:

On Sun, 2011-01-16 at 14:09 +0000, Simon Arlott wrote:

quoted

[    1.666706] forcedeth 0000:00:08.0: ifname eth0, PHY OUI 0x5043 @ 16, addr 00:e0:81:4d:2b:ec
[    1.666767] forcedeth 0000:00:08.0: highdma csum vlan pwrctl mgmt gbit lnktim msi desc-v3

I have eth0 and eth0.3840 which works until I add eth0 to a bridge.
While eth0 is in a bridge (the bridge device is up), eth0.3840 is unable
to receive packets. Using tcpdump on eth0 shows the packets being
received with a VLAN tag but they don't appear on eth0.3840. They appear
with the VLAN tag on the bridge interface.

[...]

This means the behaviour is now consistent, whether or not hardware VLAN
tag stripping is enabled.  (I previously pointed out the inconsistent
behaviour in <http://thread.gmane.org/gmane.linux.network/149864>.)  I
would consider this an improvement.

Shouldn't the kernel also prevent a device from being both part of a
bridge and having VLANs? Instead everything appears to work except
incoming traffic.

-- 
Simon Arlott