Re: UEFI-PXE boot to grub2 with BIOS configured VLAN tagging?

[Andrei Borzenkov]

13.01.2017 21:35, Christian Rohmann пишет:
> Hey Andrei,
> 
> sorry for the late reply.
> 
> 
> On 11.01.2017 17:34, Andrei Borzenkov wrote:
>> You misunderstand. What is missing is the way to transport information
>> about VLAN from firmware (UEFI) to GRUB. How it is represented*inside*
>> GRUB is technical detail.
>>
>>> As this scenario is not uncommon, think hypervisor host with just one
>>> interface which is a VLAN trunk, how should I go about filing issues for
>>> this?
>>>
>> Sure you can, but please understand that someone who has access to
>> hardware in question needs to actually write a patch. You can help by at
>> least providing information about UEFI device tree here - start with
>> netbooting EFI Shell and providing output of "devtree" and "dh".
> 
> I configured a VLAN to be used for PXE but it doesn't appear anywhere in
> the devtree or dh output on the UEFI cli.
> There are variables like "VLAN" there, but all show "0".
> 
> Did I miss anything here or could it be that the VLAN used for the
> initial PXE is not populated / exposed to the NBE?
> 

Hard to tell. Unfortunately, my naïve attempt to configure VLAN boot in
QEMU was not successful, so I would appreciate any pointer to step by
step guide.