Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Date:   Tue, 8 Nov 2022 12:52:37 +0200
From:   Vladimir Oltean <olteanv@gmail.com>
To:     Felix Fietkau <nbd@nbd.name>
Cc:     netdev@vger.kernel.org, "David S. Miller" <davem@davemloft.net>,
        Eric Dumazet <edumazet@google.com>,
        Jakub Kicinski <kuba@kernel.org>,
        Paolo Abeni <pabeni@redhat.com>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 08/14] net: vlan: remove invalid VLAN protocol warning
Message-ID: <20221108105237.v4coebbj7kzee7y6@skbuf>
References: <20221107215745.ascdvnxqrbw4meuv@skbuf>
 <3b275dda-39ac-282d-8a46-d3a95fdfc766@nbd.name>
 <20221108090039.imamht5iyh2bbbnl@skbuf>
 <0948d841-b0eb-8281-455a-92f44586e0c0@nbd.name>
 <20221108094018.6cspe3mkh3hakxpd@skbuf>
 <a9109da1-ba49-d8f4-1315-278e5c890b99@nbd.name>
 <20221108100851.tl5aqhmbc5altdwv@skbuf>
 <5dbfa404-ec02-ac41-8c9b-55f8dfb7800a@nbd.name>
 <20221108103330.xt6wi3x3ugp7bbih@skbuf>
 <1be4d21b-c0a4-e136-ed68-c96470135f14@nbd.name>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <1be4d21b-c0a4-e136-ed68-c96470135f14@nbd.name>
Precedence: bulk

On Tue, Nov 08, 2022 at 11:42:09AM +0100, Felix Fietkau wrote:
> Okay, I will stick with METADATA_HW_PORT_MUX for now. If we use it in the
> flow dissector to avoid the tagger specific fixup, we might as well use it
> in DSA to skip the tag proto receive call. What do you think?

I suppose that dsa_switch_rcv() could test for the presence of a metadata_dst
and treat that generically if present, without unnecessarily calling down into
the tagging protocol ->rcv() call. The assumption being that the metadata_dst
is always formatted (by the DSA master) in a vendor-agnostic way.