netdev - Re: [PATCH net-next] igb: enable VLAN stripping for VMs with i350

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Date:	Fri, 07 Feb 2014 21:29:39 -0800
From:	Aaron Brown <aaron.f.brown@...el.com>
To:	Stefan Assmann <sassmann@...nic.de>
Cc:	netdev@...r.kernel.org, davem@...emloft.net,
	e1000-devel@...ts.sourceforge.net, carolyn.wyborny@...el.com,
	jeffrey.t.kirsher@...el.com
Subject: Re: [PATCH net-next] igb: enable VLAN stripping for VMs with i350

On Wed, 2013-12-11 at 10:32 +0100, Stefan Assmann wrote:
> For i350 VLAN stripping for VMs is not enabled in the VMOLR register
> but in
> the DVMOLR register. Making the changes accordingly. It's not
> necessary to
> unset the E1000_VMOLR_STRVLAN bit on i350 as the hardware will simply
> ignore
> it.
> 
> Without this change if a VLAN is configured for a VF assigned to a
> guest
> via (i.e.)
> ip link set p1p1 vf 0 vlan 10
> the VLAN tag will not be stripped from packets going into the VM.
> Which they
> should be because the VM itself is not aware of the VLAN at all.
> 
> Signed-off-by: Stefan Assmann <sassmann@...nic.de>
Tested-by: Sibai Li <sibai.li@...el.com>
Signed-off-by: Aaron Brown <aaron.f.brown@...el.com>

> ---
>  drivers/net/ethernet/intel/igb/e1000_82575.h | 4 ++++
>  drivers/net/ethernet/intel/igb/e1000_regs.h  | 1 +
>  drivers/net/ethernet/intel/igb/igb_main.c    | 7 +++++++
>  3 files changed, 12 insertions(+)


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