netdev - Re: [Bugme-new] [Bug 41152] New: kernel 3.0 and above fails to handle vlan id 0 (802.1p) packets properly without hardware acceleration

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Message-ID: <4E4B615F.8060403@gmail.com>
Date:	Wed, 17 Aug 2011 07:36:15 +0100
From:	Mike Auty <mike.auty@...il.com>
To:	Jiri Pirko <jpirko@...hat.com>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	bugme-daemon@...zilla.kernel.org, netdev@...r.kernel.org
Subject: Re: [Bugme-new] [Bug 41152] New: kernel 3.0 and above fails to handle
 vlan id 0 (802.1p) packets properly without hardware acceleration

On 17/08/11 06:37, Jiri Pirko wrote:
> 
> Hi Mike. May I ask what NIC are you seeing the regression on?
> It may have something to do with dev->vlangrp and ndo_vlan_add/kill_vid.
> VID 0 was recently only added by the latter ones. So if driver only
> depended on dev->vlangrp, 0 was not there. This was changed recently by
> my "vlan cleanup" patches. It may work for you again on net-next today.
> 

Hi there,

I'm finding it on the following two NICs:

02:00.0 Ethernet controller: Attansic Technology Corp. L1 Gigabit
Ethernet Adapter (rev b0)

05:01.0 Network controller [0280]: Broadcom Corporation BCM4306
802.11b/g Wireless LAN Controller [14e4:4320] (rev 03)

and (on a different machine):

02:00.0 Network controller [0280]: Intel Corporation WiFi Link 6000
Series [8086:422c] (rev 35)

The only one I have had any success with is:

00:19.0 Ethernet controller [0200]: Intel Corporation 82577LM Gigabit
Network Connection [8086:10ea] (rev 05)

Which I assume is because it has actual hardware acceleration.  I may be
able to put net-next on the Intel Wifi box for testing at some point,
but I don't know how soon I'll be able to do that.  Please let me know
whether that would be a worthwhile test, and if so I'll try and get it
done.  Thanks...

Mike  5:)

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