# Re: \[PATCH net-next v2 00/27\] Allow passing of VLAN CFI bit through network stack

- From: David Miller \<davem@davemloft.net\>
- Date: 2017-01-03 21:33:35 
- List: netdev
- Page: https://ratatoskr.run/netdev/2017/01/11039376
- Thread: https://ratatoskr.run/netdev/2016/12/11037152/t.md

```text
From: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Date: Tue,  3 Jan 2017 21:52:33 +0100 (CET)

> Dear NetDevs
> 
> This series removes an abuse of VLAN CFI bit in Linux networking stack.
> Currently Linux always clears the bit on outgoing traffic and presents
> it cleared to userspace (even via AF_PACKET/tcpdump when hw-accelerated).
> 
> This uses a new vlan_present bit in struct skbuff, and removes an assumption
> that vlan_proto != 0 when VLAN tag is present.
> 
> As I can't test most of the driver changes, please look at them carefully.
> 
> The series is supposed to be bisect-friendly and that requires temporary
> insertion of #define VLAN_TAG_PRESENT in BPF code to be able to split
> JIT changes per architecture.
> 
> Best Regards,
> Michał Mirosław
> 
> v2: rebase onto net-next

This patch series is really way too large.

You're going to have to find a way to combine related changes, or submit
this as a series of logical sets, one at a time.

Thanks.
```