linux-kernel - Re: [PATCH net-next 2/6] net: dsa: vsc73xx: add port_stp_state

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Message-ID: <27e0f7c9-71a8-4882-ab65-6c42d969ea4f@lunn.ch>
Date:   Wed, 21 Jun 2023 21:33:43 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Pawel Dembicki <paweldembicki@...il.com>
Cc:     netdev@...r.kernel.org, linus.walleij@...aro.org,
        Florian Fainelli <f.fainelli@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next 2/6] net: dsa: vsc73xx: add port_stp_state_set
 function

> +	struct vsc73xx *vsc = ds->priv;
> +	/* FIXME: STP frames isn't forwarded at this moment. BPDU frames are
> +	 * forwarded only from to PI/SI interface. For more info see chapter
> +	 * 2.7.1 (CPU Forwarding) in datasheet.

Do you mean the CPU never gets to see the BPDU frames?

Does the hardware have any sort of packet matching to trap frames to
the CPU? Can you match on the destination MAC address
01:80:C2:00:00:00 ?

	Andrew