netdev - Re: [PATCH net-next 0/6] Remove VLAN.CFI overload

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Message-Id: <20181116.211135.178846692709588415.davem@davemloft.net>
Date:   Fri, 16 Nov 2018 21:11:35 -0800 (PST)
From:   David Miller <davem@...emloft.net>
To:     alexei.starovoitov@...il.com
Cc:     mirq-linux@...e.qmqm.pl, netdev@...r.kernel.org, ast@...nel.org,
        benh@...nel.crashing.org, daniel@...earbox.net, jhogan@...nel.org,
        linux-mips@...ux-mips.org, linuxppc-dev@...ts.ozlabs.org,
        mpe@...erman.id.au, paul.burton@...s.com, paulus@...ba.org,
        ralf@...ux-mips.org, sparclinux@...r.kernel.org
Subject: Re: [PATCH net-next 0/6] Remove VLAN.CFI overload

From: Alexei Starovoitov <alexei.starovoitov@...il.com>
Date: Fri, 16 Nov 2018 19:51:55 -0800

> Michal, could you please explain the reasoning?

By treating VLAN.CFI specially as "VLAN TAG PRESENT" we prevent
the usage of certain VLAN ID encodings.

So he's trying to get rid of VLAN_TAG_PRESENT completely and this
was the final patch series necessary to accomplish that.