Subject: Re: [RFC bpf-next v2 09/24] xdp: Add VLAN tag hint

From: Jakub Kicinski <[email-masked]>
Date: Tue, 3 Oct 2023 05:35:19 -0700

On Wed, 27 Sep 2023 09:51:09 +0200 Larysa Zaremba wrote:
> Implement functionality that enables drivers to expose VLAN tag
> to XDP code.
> 
> VLAN tag is represented by 2 variables:
> - protocol ID, which is passed to bpf code in BE
> - VLAN TCI, in host byte order

Sorry for a random chime-in but was there any discussion about 
the validity of VLAN stripping as an offload?

I always thought this is a legacy "Windows" thing which allowed
Windows drivers to operate on VLAN-tagged networks even before
the OS itself understood VLANs...  Do people actually care about
having it enabled?