netdev - Re: [PATCH v4 net-next 5/5] net: dsa: tag_dsa: Support reception of packets from LAG devices

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Date:   Wed, 16 Dec 2020 21:14:54 +0200
From:   Vladimir Oltean <olteanv@...il.com>
To:     Tobias Waldekranz <tobias@...dekranz.com>
Cc:     davem@...emloft.net, kuba@...nel.org, andrew@...n.ch,
        vivien.didelot@...il.com, f.fainelli@...il.com,
        j.vosburgh@...il.com, vfalico@...il.com, andy@...yhouse.net,
        netdev@...r.kernel.org
Subject: Re: [PATCH v4 net-next 5/5] net: dsa: tag_dsa: Support reception of
 packets from LAG devices

On Wed, Dec 16, 2020 at 05:00:56PM +0100, Tobias Waldekranz wrote:
> Packets ingressing on a LAG that egress on the CPU port, which are not
> classified as management, will have a FORWARD tag that does not
> contain the normal source device/port tuple. Instead the trunk bit
> will be set, and the port field holds the LAG id.
> 
> Since the exact source port information is not available in the tag,
> frames are injected directly on the LAG interface and thus do never
> pass through any DSA port interface on ingress.
> 
> Management frames (TO_CPU) are not affected and will pass through the
> DSA port interface as usual.
> 
> Signed-off-by: Tobias Waldekranz <tobias@...dekranz.com>
> Reviewed-by: Florian Fainelli <f.fainelli@...il.com>

Reviewed-by: Vladimir Oltean <olteanv@...il.com>